Diagnosis of Rotor Broken Bar Fault in Inverter Driven Induction Motor Drive by Signal Processing Techniques

Vol. 4  Issue 3
Year:2016
Issue:May-Jul 
Title:Diagnosis of Rotor Broken Bar Fault in Inverter Driven Induction Motor Drive by Signal Processing Techniques
Author Name:Khadim Siddiqui, Kuldeep Sahay and V.K. Giri
Synopsis:
In the present time, the inverter-driven induction motor drives are being widely employed in the industries for variable speed applications. These drives are replacing DC motors and thyrister bridges day-by-day in the industries. Therefore, health monitoring of these variable speed drives are receiving large attention from the researchers. In this research paper, the rotor broken bar fault has been diagnosed in the steady state as well as transient conditions by advanced signal processing techniques. For fault detection in the steady state condition, the Fast Fourier Transform (FFT) algorithm is used and for transient fault detection, time domain as well as wavelet transform techniques have been used. The time domain and frequency domain techniques show some kind of lacks for diagnosis of this fault. Therefore, a wavelet transform based new technique for early broken rotor bar, fault diagnosis purpose has been proposed and the rotor fault is efficiently diagnosed in the transient condition. These approximation signals based new technique has diagnosed the fault in the transient condition and consequently, fault may be averted before they become more catastrophic. As a result, industries may save large revenues and unexpected failure conditions.

Model Reduction of Continuous and Discrete Time Systems using Differentiation Method with Many Clustering Techniques

Vol. 4  Issue 3
Year:2016
Issue:May-Jul 
Title:Model Reduction of Continuous and Discrete Time Systems using Differentiation Method with Many Clustering Techniques
Author Name:Maneesh Kumar Gupta and Awadhesh Kumar
Synopsis:
This paper presents, many mixed methods for Model Order Reduction (MOR) of a continuous approach for Single Input Single Output (SISO) system. The reduced order numerator polynomial is obtained with the simple differentiation method. The numerator of higher order transfer function reduces by differentiation method and denominator reduces by many clustering techniques such as pole clustering, modified pole clustering, residue based pole clustering, fuzzy Cmeans clustering and stability equation method. The proposed method has been verified using with two numerical examples, first is used in the continuous time system and the second is used in the discrete time system.

Design and Programming of an Integrated Automation of Lift Irrigation Pumping Station

Vol. 4  Issue 3
Year:2016
Issue:May-Jul 
Title:Design and Programming of an Integrated Automation of Lift Irrigation Pumping Station
Author Name:Suveg V Iyer, Sree Rajendra and M.S.Srinath
Synopsis:
Lift irrigation method is a method followed in water scarce areas, where the underground water source is tapped for irrigation of agricultural fields. This process is automated to achieve a greater control over the parameters of importance and by that way increasing the efficiency of the entire process. In the integrated approach of automation, the whole system is considered and the individual modules used have a dependency over the other. Thus integrated method requires maintenance of all the modules in high efficiency to effectively gain the advantages of the method. The expected result of this approach is a central and local control system for the process and to develop a controller program which is more user-oriented. The comparative results of the existing process with the developed approach show a great variation in the ease of troubleshooting the process and also the monetary difference in maintaining the system. Analysing the results, about 20% difference in maintenance time is found out considering for a month.

Sliding Mode Control (SMC) and Dynamic Sliding Mode Control (DSMC) Of Split Range Plant and pH Neutralization Plant using LabVIEW

Vol. 4  Issue 3
Year:2016
Issue:May-Jul 
Title:Sliding Mode Control (SMC) and Dynamic Sliding Mode Control (DSMC) Of Split Range Plant and pH Neutralization Plant using LabVIEW
Author Name:S. Harivardhagini and A. RaghuRam
Synopsis:
This paper deals with the control of liquid level of a split range plant and the pH of a pH Neutralization plant respectively, when subjected to Sliding Mode Control (SMC) and Dynamic Sliding Mode Control (DMSC). Both these controllers are the types of Variable Structure Control (VSC). This is a type of Non Linear Control. The pH plant is subjected to both the controllers and the effect of chattering is observed. The similar action is performed on a split range prototype plant and the effect of chattering is observed in this model also. These two controllers help to identify the effect of it over the final control element. The results are presented and the best controller is suggested. The whole programming is done using LabVIEW software, which is a graphical programming software. LabVIEW software is being widely used in industries and helps to visualise the output in a user friendly method. The interfacing of the hardware and software is done using Data Acquisition System.

Real Time Home Automation System using WSN with Power Optimization

Vol. 4  Issue 3
Year:2016
Issue:May-Jul 
Title:Real Time Home Automation System using WSN with Power Optimization
Author Name:Ushaa Eswaran and R. Rajith
Synopsis:
The uniqueness of this system is the execution of controlling mechanism of the equipment in an altered way. The hardware based system is used to monitor and control the system for household appliances has been designed in this paper. The appropriate control mechanism is implemented by the reliable action of TRAIC with OPTO-isolated drivers. Here, the loads are connected in parallel to share the power. The system also has the ability to monitor the tamper action by having essential voltage and current sensor. The load trips if any of the above action is sensed. The recycling time will monitor the load and terminate the unwanted load from sharing. This design is a human-friendly technical solution for tracking and controlling the household appliances.

The Comparative Analyzes of Solar Energy Production Potential between Van and Antalya Using PVSOL Simulation Tool

Vol. 4  Issue 3
Year:2016
Issue:May-Jul 
Title:The Comparative Analyzes of Solar Energy Production Potential between Van and Antalya Using PVSOL Simulation Tool
Author Name:Abdülsamed Tabak and Mustafa Sacid EndIz 
Synopsis:
In this study, the comparative analyzes of solar Photovoltaic (PV) energy production potential between Van which is situated in the far east of Turkey, and Antalya which is situated in the south of Turkey, using dynamic PVSOL Expert 6.0 simulation tool regarding annual temperatures and solar radiation capacity was performed. The objective of this paper is to explain and help in better understanding of which part of the country should be invested regarding solar energy generation. Ignoring the average annual temperatures, Antalya seems to be advantageous since, the solar radiation capacity is high, but considering the temperature’s negative effects on the solar panels, the advantages of Antalya decreases. Since, the average annual temperatures in Antalya are higher than Van, the payback period of the investment increases by 3.44%, although the solar radiation capacity is much more than in Van. Under the same conditions, the solar energy production potential difference between the two cities is only 6.25%. As can be clearly seen from the simulation results performed in this study, there are not too much differences regarding solar energy production potential between Antalya and Van. Related to the cost of an investment for a solar power plant investment, both the cities can be selected.

Model Order Reduction Using Krylov-Subspace Based Two-sided Arnoldi Algorithm

Vol. 4  Issue 2
Year:2016
Issue:Feb-Apr 
Title:Model Order Reduction Using Krylov-Subspace Based Two-sided Arnoldi Algorithm
Author Name:Nikku Shahi and Awadhesh Kumar 
Synopsis:
Model Order Reduction (MOR) plays an important role in determining a Reduced Order Model (ROM) from a large scale system, while preserving their input-output behaviour. A Reduced Order Model is a lower dimensional computational model which can faithfully reproduce the essential feature of a higher dimensional model. This paper presents, the overview of Model Order Reduction with emphasis on Krylov-Subspace based technique and its algorithm. Krylovsubspace methods are well known and used in different applications of MOR. Krylov-subspaces replaces the large and expensive model by a smaller model, with excellent approximating properties and at the same time by means of efficient computational approach. The paper overviewed on the algorithms of Krylov-subspace technique that is Arnoldi algorithm and Two-sided Arnoldi algorithm which is used for obtaining the reduced-order models of high-order linear time invariant systems with an appropriate implicitly matching of Time Moments and Markov Parameters. Further, three numerical examples have been carried out to obtain their reduced order models with the preservation of stability.

Fuzzy Control of Inverted Pendulum System

Vol. 4  Issue 2
Year:2016
Issue:Feb-Apr 
Title:Fuzzy Control of Inverted Pendulum System
Author Name:Rajesh Tanna, K. Alice Mary and Vivek Viswanadh 
Synopsis:
This paper gives the position and tracking control of a nonlinear system. Inverted pendulum is an under actuated, unstable and non-linear system. Therefore, control design of such a system is a challenging task. There are many methods to design a controller, but Takagi-Sugeno (T-S) fuzzy controller is one of the traditional control technique which is applied to a non-linear system to check the performance and stability. In this paper, the non-linear system is represented as a linear system by using sector nonlinearity method. Here, the control objective is to control the system such that, the inverted pendulum is stabilized in the upright position. Simulation is performed on the inverted pendulum system, and the effectiveness of the proposed site is demonstrated and the robustness is also verified. In this paper, the algorithm has been applied to the Inverted pendulum system with eight nonlinearities. The simulations are performed on inverted pendulum system and the effectiveness of the proposed method is demonstrated and also the robustness of the system is verified.

Approximation of Large Scale Systems by Balanced Truncation and Singular Perturbation Method

Vol. 4  Issue 2
Year:2016
Issue:Feb-Apr 
Title:Approximation of Large Scale Systems by Balanced Truncation and Singular Perturbation Method
Author Name:Deepak Gupta, and Awadhesh Kumar
Synopsis:
Model Order Reduction (MOR) is one of the important methods to reduce the order of large scale dynamical system which come in account from previous few decades. Here, the authors inspect one of the simple and efficient methods of MOR which is Balanced Realization, and it is further divided in to two methods of MOR, among them first one is the Balanced Truncation method and second one is the Balanced Singular Perturbation Approximation method. In this paper, the authors consider three examples of real time dynamical system namely, Building Model, Partial Differential Equation Model and CD Player. Both the methods have been applied on these models and an exhaustive comparison has been made. The authors consider both the Single Input Single Output (SISO) and Multiple Input Multiple Output (MIMO) system and have applied in the above examples.

Model Order Reduction using Chebyshev Polynomial, Stability Equation Method and Fuzzy C-means Clustering

Vol. 4  Issue 2
Year:2016
Issue:Feb-Apr 
Title:Model Order Reduction using Chebyshev Polynomial, Stability Equation Method and Fuzzy C-means Clustering
Author Name:Maneesh Kumar Gupta, and Awadhesh Kumar
Synopsis:
In this paper, the authors have presented a mixed method for Model Order Reduction (MOR) of a continuous approach for Single Input Single Output (SISO) system. The numerator of higher order transfer function of the model reduces by Chebyshev polynomial technique and the denominator reduces by two different methods. The Fuzzy C-Means Clustering method is used for reducing the denominator and the Stability equation technique is also used for reducing the denominator. The results are then compared for both the techniques.

Automation in Speed Control and Overcurrent Protection of Three Phase Induction Motor

Vol. 4  Issue 2
Year:2016
Issue:Feb-Apr 
Title:Automation in Speed Control and Overcurrent Protection of Three Phase Induction Motor
Author Name:M.M. Kharade, and N.R Kulkarni 
Synopsis:
The intent of the paper is to control the speed and give protection to Induction Motor (IM). Thereby it limits the starting current and protects the induction motor under load/ overload conditions. The control panel is designed to control the speed and protection of 3 phase IM and required control is done by PLC (Programmable Logic Controller). The motor is run at no load condition and load condition, for manual mode and PLC mode. At manual mode, if frequency is changed, the motor speed changes by keeping v/f ratio constant but, regulation in speed is high. At PLC mode, if frequency is changed, the motor speed remains constant, by keeping v/f ratio constant and speed regulation zero. The speed control of the induction motor in manual and PLC mode is accessed by using the selector switch [1]. SCADA (Supervisory Control and Data Aquisition) is used for monitoring and controlling of induction motor performance and it also collects performance data of the induction motor. This is how the starting, control the speed and protection of IM is achieved by using PLC and SCADA, and the operation is sufficiently high efficient and reliable [1], [2].

A Review on Model Predictive Control Technology and Future Advancements

Vol. 4  Issue 1
Year:2016
Issue:Nov-Jan
Title:A Review on Model Predictive Control Technology and Future Advancements
Author Name:Prateek Kumar Pathak, and Lal Bahadur Prasad
Synopsis:
The Model Predictive Control (MPC) technique determines the receding horizon control solution by minimizing the cost function, while satisfying the constraints. This paper presents a review on the MPC technology and its future advancements. The control strategy, used to find the solution of an optimal control problem within the constraint limits is described in this paper. The various factors and the models influencing the MPC solution for the optimal control problems are also explained. A vision of the next generation of MPC technology with more emphasis on potential business and research opportunities are presented in this paper.

Different MPPT Techniques in Solar Photovoltaic System: A Comprehensive Review

Vol. 4  Issue 1
Year:2016
Issue:Nov-Jan
Title:Different MPPT Techniques in Solar Photovoltaic System: A Comprehensive Review
Author Name:Shweta Singh and Awadhesh Kumar 
Synopsis:
Among all the renewable energy sources, PV (Photovoltaic) solar energy is considered as the most auspicious inexhaustible resources. In recent years, due to acute energy crisis, the demand for renewable energy sources is high. Maximum Power Point Tracking (MPPT) for the solar energy is required as the power output of the solar system varies with variation in solar irradiance and temperature. So to extract peak power point from PV system, various MPPT algorithmic rule are utilized. In this paper, the authors have discussed various aspects of these algorithms. This paper presents, a literature survey of various MPPT algorithms in solar photovoltaic system.

Reduced Order Modelling of Continuous Time SISO Systems

Vol. 4  Issue 1
Year:2016
Issue:Nov-Jan
Title:Reduced Order Modelling of Continuous Time SISO Systems
Author Name:Rajesh Tanna and K. Alice Mary
Synopsis:
Many systems that arise in practice are complex in nature and of a higher-order. The mathematical procedures of modeling such systems lead to a comprehensive description of the process in the form of complex, higher-order transfer functions or state-space models. This complexity often makes it difficult to obtain a good understanding of the behavior of the system. Therefore, higher-order models are difficult to use for simulation, analysis or controller synthesis, and it is not only desirable, but often necessary to obtain satisfactory reduced-order representations of such higher-order models. The main objective of model order reduction is to obtain a reduced-order approximate of a complex higher-order system that retains and reflects the important characteristics of the original system as closely as possible.

Design and Implementation of Algorithm for Real- Time Patient Monitoring in Ambulance While Transit

Vol. 4  Issue 1
Year:2016
Issue:Nov-Jan
Title:Design and Implementation of Algorithm for Real- Time Patient Monitoring in Ambulance While Transit
Author Name:Naregalkar Akshay and G. Vamsi Krishna 
Synopsis:
Time taken by the hospital authority to understand the condition of the patient is crucial in saving a patient's life. So need for tracking the patient's health conditions such as Heart rate, body temperature, Blood Pressure (BP), ECG signal, fatigue, air lung volume and vital-signs like patient physical appearance are sent to the hospital. All these parameters are monitored in the hospital, and also can be accessed by Doctors from anywhere. The system will allow emergency room doctors to get a real-time overview of patient's condition prior to their arrival at the hospital. This will help them to be prepared in advance to treat the patients once they arrive. This also helps them in proper intervention and intensive patient monitoring accordingly. In this paper, a real-time patient monitoring system in the ambulance while in transit is designed to transmit all the above patient vital parameters to the Hospital and the Doctor. The algorithms were also implemented to detect the abnormalities in these parameters. The system is implemented using LabVIEW real-time environment and Bio-sensors are interfaced through signal conditioning circuit to NI USB – 6281. This paper is a part of real time project funded by UGC India.

Feasibility of A Small Scale HAWT for Domestic Application Based on Balsa Wood

Vol. 4  Issue 1
Year:2016
Issue:Nov-Jan
Title:Feasibility of A Small Scale HAWT for Domestic Application Based on Balsa Wood
Author Name:Nikhil V Nayak, P P Revankar and M B Gorawar
Synopsis:
This study develops a methodology for the review of aero-structural design, including consideration of the starting of a small wind turbine blade. To design a fast-starting blade, the major concern is to make sure that the blade allowable stress is within the safe limits. The literature is studied and the blade element momentum theory and the simple beam theory were employed to compute the stress and deflection along the blade. The feasibility of the solution is also looked while considering the ease in manufacturing as well as other concerns that arise while installing such sources of power generation. The authors have aimed to find solution for the remote villages which are not connected to any power grid can receive power, so as to ensure lighting in their homes. The power output of 75 W at an average wind speed of 4.5 m/s has been targeted. The authors have also aimed to provide electricity to the rural area in India, which amounts to 25000 in number where there is no provision for electricity. This solution may provide the electricity needs of such villages.

Comparative Study of Single Phase Power Inverters Based on Efficiency and Harmonic Analysis

Vol. 4  Issue 1
Year:2016
Issue:Nov-Jan
Title:Comparative Study of Single Phase Power Inverters Based on Efficiency and Harmonic Analysis
Author Name:Mustafa Sacid ENDIZ, Serafettin EREL andMustafa YAGCI
Synopsis:
Today the expanding use of power inverters in the power electronics industry has increased the importance of applied inverter choosing with respect to the harmonic content and efficiency. Especially, harmonics are playing the most important role because sensitive electronic devices can be operated only with the clean power generated inverters. In this paper, comparative analysis of single phase power inverters regarding their output waveforms was performed. Square wave, modified square wave and true sine wave inverter circuits with 500W rated power were designed and analyzed using Proteus Professional spice program. This comparison was fulfilled in accordance with the circuit configuration, THD (Total Harmonic Distortion) and output efficiency. After simulation results, these inverter circuits were realized on PCB (Printed Circuit Board). The efficiency of the inverters was calculated using Extech true RMS (Root Mean Square) digital multimeter and THD values were measured using Fluke 435 Power Analyzer device. According to the experimental results, the finished true sine wave inverter circuit with about 7% THD and an efficiency of 80% has the most ideal output signal compared to the modified and square wave inverter circuits. To get a resembled sine wave, a low pass filter was designed and applied at the output of the true sine wave inverter circuit. With the help of this filter circuit, the harmonic content was reduced. Tests on resistive and inductive loads were carried out under laboratory conditions and output signals were observed using Tektronix digital storage oscilloscope. Test results and simulation outcomes were confirmed to each other.

A Study of Gauge Repeatability and Reproducibility Characteristics on Critical Parameters of A Cylinder Liner

Vol. 3  Issue 4
Year:2015
Issue:Aug-Oct 
Title:A Study of Gauge Repeatability and Reproducibility Characteristics on Critical Parameters of A Cylinder Liner
Author Name:K. Prakash Babu, A. Chandini Priyanka, K. Sahithi and K. Kavyasri 
Synopsis:
Measurement data are used more often and in more ways than ever before. The decision to adjust a manufacturing process is nowadays mostly based on the measurement data. Hence, the decision to change a process is purely dependent on the quality of data we acquire. Higher the quality of data, greater is its reliability. A change in process which relies on the low quality data would obviously produce defective components which are a result of wastage of capital, labour, and time. Hence, the need for data with reasonable quality levels is felt. In the present work, the authors have assessed the validity of some measuring instruments which are used to measure some of the critical parameters of cylinder liners making use of certain gage characteristics like Repeatability and Reproducibility which capture the precision of a measuring instrument. The work was carried out at Kusalava International Limited which is currently one of the largest, leading International manufacturers of Centrifugal Cast Cylinder Liners. This study helped to make necessary modifications in the measuring equipment, so that the measurement data obtained from measuring instrument will be reliable.

Design and Analysis of Fuzzy Logic, Sliding Mode, Dynamic Sliding Mode and PID Controllers for Level Control in A Prototyped Split Range Plant

Vol. 3  Issue 4
Year:2015
Issue:Aug-Oct 
Title:Design and Analysis of Fuzzy Logic, Sliding Mode, Dynamic Sliding Mode and PID Controllers for Level Control in A Prototyped Split Range Plant
Author Name:S. Harivardhagini, A. Raghu Ram
Synopsis:
In most of the Industrial and pharmaceutical applications, we need precise level control in tanks. The more precise the level is controlled, much better quality of product we yield. Practically PID controllers are used, but to increase precision few more controllers are implemented. In this paper, a split-range setup is designed and the level in the tank has to be controlled. To this split-range setup various controllers such as PID Controller, FUZZY Controller, Sliding Mode Controller (SMC) and Dynamic Sliding Mode Controller (DSMC) have been designed and implemented using LabVIEW. Advanced Controllers are implemented to yield best results of characteristics such as time taken to attend the set point, overshoot, oscillations persistence, etc. At last the best controller is suggested for this type of application.

Design of Fuzzy Controller Using Single Linear Nominal Plant for Mass-Spring-Damper System

Vol. 3  Issue 4
Year:2015
Issue:Aug-Oct 
Title:Design of Fuzzy Controller Using Single Linear Nominal Plant for Mass-Spring-Damper System
Author Name:Rajesh Tanna, Alok Kanti Deb
Synopsis:
This paper gives position and tracking control of Mass-Spring-Damper System. Many methods are available to design controllers for non-linear systems. But, in this framework, a nonlinear system is represented as the fuzzy average of local linear models which are popularly known as Takagi-Sugeno (T-S) Fuzzy Model. Given a nonlinear system, in terms of a T-S Fuzzy Model, the T-S fuzzy model is rewritten in terms of a single nominal plant and rest of the plants are expressed as a disturbance to the nominal plant. The controller is designed such that, the overall system becomes stable in the presence of the disturbance terms. However, the implementation of the controller is constrained by the norm bound of the disturbance term. The control scheme can be designed using the concept of robust control technique. Moreover, the overall fuzzy scheme guarantees that all signals involved are bounded and the output of the closed-loop system will asymptotically track the desired output trajectory. In this paper, the algorithm has been applied to Mass-Spring-Damper System. The simulation is performed on the Mass-Spring-Damper System and the effectiveness of the proposed method is demonstrated.

Position Control of PMLSM with Space Vector Pulse Width Modulation Using Matlab

Vol. 3  Issue 4
Year:2015
Issue:Aug-Oct 
Title:Position Control of PMLSM with Space Vector Pulse Width Modulation Using Matlab
Author Name:K. Shankar, B. Arundhati, K. Alicemary
Synopsis:
In this paper, the authors have proposed modeling of Proportional Integral Velocity (PIV) controller for Permanent Magnet Linear Synchronous Motor (PMLSM) drive system in Simulink, the simulation includes all realistic components of the system. The PIV controller is used for position control of this type of motor. The response of PMLSM with the proposed controller is studied under different load disturbances. The effectiveness of the proposed PIV controller is compared with that of the conventional PID controller. The proposed controller is used in order to overcome the non-linearity problem of PMLSM and also to achieve a faster settling response.

Fuzzy Back-Propagation Network Based Controller for Power Quality Improvement Using UPQC

Vol. 3  Issue 4
Year:2015
Issue:Aug-Oct 
Title:Fuzzy Back-Propagation Network Based Controller for Power Quality Improvement Using UPQC
Author Name:V. Veera Nagi Reddy, D.V. Ashok Kumar, K. Venkata Reddy
Synopsis:
Maintaining of power quality is a major issue in distribution systems inorder to enhance the lifetime of utility devices. Unified Power Quality Conditioner (UPQC) is a custom power device, that consists of series and shunt converters connected back to back and deals with supply voltage and load current imperfections i.e., mitigates voltage sags, reduces harmonics and balance the loads. The UPQC is isolated to energy storage using multi-level topology. The Back Propagation Algorithm (BPA) based fuzzy control is described to generate gating pulses for cascaded H- bridge inverter. The reference source currents for Power Factor Correction (PFC) and Zero Voltage Regulation (ZVR) is estimated by extracting the fundamental value of weighted active and reactive power components of load currents under nonlinear loads. The proposed controller adopts itself to mitigate voltage sags, eliminate harmonics and balance loads at the utility end. Simulations are carried out using Matlab/Simulink.

Total Safety Management (TSM) Implementation in an Electronic Components Manufacturing Industry

Vol. 3  Issue 3
Year:2015
Issue:May-Jul
Title:Total Safety Management (TSM) Implementation in an Electronic Components Manufacturing Industry
Author Name:Dennis Xavier, V. Muthukumaran and M. Balaji
Synopsis:
This paper brings a whole new spectrum of light on Total Safety Management (TMS) philosophy and the evolution of TSM concept from a system perspective in an electronic components manufacturing industry. The traditional method of safety management employed in the industry was not productive in the context of organizational performance. In order to boost up the organizational performance, the establishment of TSM culture is viewed and focused. The functional content of the TSM model with its theoretical framework was discussed and the basic elemental features of TSM are highlighted in this paper. The components of TSM and the implementation steps are practically carried out, executed and fulfilled in the industry. Since the probability of occurrence of a fatal accidents are relatively less in this type of industries, TSM leadership communication and TSM training itself can influence the system to ensure the safety standards and keep down the incident rates thereby achieving the required safety performance. Finally, an impact study and evolution of TSM in the industry are discussed and recommendations/suggestions were given to the management safety professionals. The accident numbers are declining under the action of TSM in the industry.

LabVIEW Based Design and Analysis of Fuzzy Logic, Sliding Mode and PID Controllers for Level Control in Split Range Plant

Vol. 3  Issue 3
Year:2015
Issue:May-Jul
Title:LabVIEW Based Design and Analysis of Fuzzy Logic, Sliding Mode and PID Controllers for Level Control in Split Range Plant
Author Name:S. Harivardhagini and A. Raghuram
Synopsis:
For most of the Industrial and pharmaceutical applications precise level control of tanks are necessary. When precise control of level is achieved much good quality of product can be yielded. To achieve better results it is needed, to implement a robust controller than conventional PID controller. In this paper a Split-Range Setup is prototyped and is used to control level in a tank. With this split-range setup the following controllers such as PID Controller, Fuzzy Logic Controller and Sliding Mode Controller (SMC) were designed and implemented. The whole control is programmed and implemented in LabVIEW (Laboratory Virtual Instrument Workbench) software. This software is based on graphical programming technique. By application of these controllers the best suited one is suggested considering the characteristics such as time taken to reach the setpoint, Settling time, peak overshoot etc.

Design of PID Controllers for Unstable Second Order Plus Time Delay Systems by Equating Coefficient Method

Vol. 3  Issue 3
Year:2015
Issue:May-Jul
Title:Design of PID Controllers for Unstable Second Order Plus Time Delay Systems by Equating Coefficient Method
Author Name:C. Ravi Kishore and R. Padma Sree
Synopsis:
Design of Proportional Integral Derivative (PID) controllers for Unstable Second Order systems Plus Time Delay (USOPTD) with/without a zero using equating coefficient method is proposed in this paper. The method is based on equating the corresponding coefficients of s , s2 , s3 of the numerator of the closed loop transfer function for servo problem to α1 ,α2 , α3times that of the denominator. The time delay term in the denominator of the closed loop transfer function is written as, and it is expanded using Taylor series expansion upto four terms both in the numerator and denominator.This makes the numerator and denominator as polynomial of s. The time delay term in the numerator shifts the response on time axis and is not considered in the design problem. By equating the corresponding coefficients of s, s2 and s3in the numerator with α1 , α2 , and α3 times that of the denominator; three linear equations are formulated and solved for the PID controller parameters. In the proposed work, the coefficients α1 , α2 , and α3 are obtained by minimizing Integral Time weighted Absolute Error (ITAE) for servo problem using fminunc of Matlab. Simulation results on various transfer function models and on the nonlinear model equations of jacketed CSTR (Continuous Stirred Tank Reactor) carrying out first order exothermic reaction are given to demonstrate the effectiveness of the proposed method. The smooth functioning of the controller is expressed interms of total variation. The controller performance is expressed in terms of ITAE. Nominal control performance of the proposed method is better than the existing methods.

Trichotomous Exploratory Data Analysis [Tri–EDA]: A Post Hoc Visual Statistical Cumulative Data Analysis Instrument Designed to Present the Outcomes of Trichotomous Investigative Models

Vol. 3  Issue 3
Year:2015
Issue:May-Jul
Title:Trichotomous Exploratory Data Analysis [Tri–EDA]: A Post Hoc Visual Statistical Cumulative Data Analysis Instrument Designed to Present the Outcomes of Trichotomous Investigative Models
Author Name:James Edward Osler II
Synopsis:
This paper presents an innovative digital instrument, that uses the novel “Trichotomous Exploratory Data Analysis” [or “Tri–EDA”] as an alternative or supportive research model for traditional confirmatory and probability-based Bayesian statistical analyses. This research adds to the publication entitled, “Introducing Tri–Factor Analysis: A Model and Statistical Test of Performance, Efficacy, and Content for Electronics and Digital Learning Ecosystems” published in i-manager’s Journal on Electronics Engineering. This narrative provides an epistemological rational for the use of “Exploratory Data Analysis” statistical analytical models for the in–depth analysis of the transformative process of qualitative data into quantitative outcomes through the Tri–Squared Test first introduced in i-manager’s Journal on Mathematics, and further detailed in i-manager’s Journal on Educational Technology, Journal on School Educational Technology, and in Journal on Educational Psychology. Tri–Exploratory Data Analysis (Tri–EDA) is a series of graphical and visual statistical models that are a part of the Tri–Squared Calculator © created, designed, and developed by the author to report Tri–Squared Test outcomes and check the validity and reliability of Tri–Squared Test results. This is a novel approach to advanced statistical Tri–Squared reporting, adds considerable merit and value to the mixed methods approach of the trichotomous research design (that intrinsically involves the holistic combination and comparison of qualitative and quantitative data outcomes).

Review and Analysis of Helicopter Control Methods

Vol. 3  Issue 3
Year:2015
Issue:May-Jul
Title:Review and Analysis of Helicopter Control Methods
Author Name:Kary Thanapalan
Synopsis:
This paper presents a review and analysis of the popular controller design techniques applied to develop control law for helicopters. The control problem has been tackled using different approaches ranging from Proportional Integral Derivative (PID) control, to H∞ robust control. The review of the popular controller design methods evidenced that the helicopter control is still a very active research area and is mainly motivated by the factor that the current control methods cannot provide full satisfaction to the desired design requirements on flight handling quality, stability, and robustness, etc.