{"title":"Robust controller design for load frequency control of non-minimum phase Hydro power plant using PSO enabled automated Quantitative Feedback Theory","authors":"B. Satpati, I. Bandyopadhyay, G. Das, C. Koley","doi":"10.1109/INDCON.2008.4768748","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768748","url":null,"abstract":"This paper presents the design of a robust PID controller for load frequency control of non-minimum phase hydro power plant using particle swarm optimization (PSO) enabled automated quantitative feedback theory (QFT). The plant model considered here is a dynamic model of power system that includes the turbine, governor, load and machine dynamics subjected to control the load frequency in accordance with power input to the governor. In the present contribution, a proposal is being presented to automate the loop shaping phase in QFT design method to synthesize a robust load frequency controller that can undertake the exact amount of plant uncertainty and can ensure a proper trade off between robust stability specifications and plant input disturbances over the entire range of frequencies. In this article the PSO technique has been employed to tune the controller automatically that can greatly reduce the computational effort compared to manual graphical techniques. It has also been demonstrated that this methodology not only automates loop-shaping but also improves design quality and, most usefully, improves the quality with a reduced order controller.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126397370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ramachandra, K. Pavithra, K. Yashasvini, K. Raja, K. Venugopal, L. Patnaik
{"title":"Cross-validation for graph matching based Offline Signature Verification","authors":"A. Ramachandra, K. Pavithra, K. Yashasvini, K. Raja, K. Venugopal, L. Patnaik","doi":"10.1109/INDCON.2008.4768794","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768794","url":null,"abstract":"Biometric is an authentication system that identifies a person depending on his physiological or behavioral traits. Signature verification is a socially accepted biometric method and is widely used for banking transactions. In this paper, we propose Cross-validation for Graph Matching based Offline Signature Verification (CGMOSV) algorithm. Database signatures are preprocessed in which signature extraction method is used to obtain high resolution for smaller normalization box. The dissimilarity measure between two signatures in the database is determined by (i) constructing a bipartite graph G, (ii) obtaining complete matching in G and (iii) finding minimum Euclidean distance by Hungarian method. We use Cross-validation principle to select reference signatures from which an optimum decision threshold value is determined. The given test signature is pre-processed and a test feature is extracted from it, which is then compared with the threshold value to authenticate the test signature. It is observed that our algorithm gives better Equal Error Rate (EER) for skilled forgeries and random forgeries compared to the existing algorithm.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134386984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Eigenvalue assignment in multi-variable control systems using a block Hessenberg matrix","authors":"K. Datta","doi":"10.1109/INDCON.2008.4768815","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768815","url":null,"abstract":"An algorithm to assign eigenvalues in a multi-input system using a block-Hessenberg matrix is presented in this paper. The present algorithm can assign multiple eigenvalues and also complex conjugate eigenvalues without involving complex arithmetic. The proposed algorithm is robust and has a parallel structure which can be exploited to implement it in a multiprocessor computer.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133250167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P., Kartik, R. V. S. s., Vara Prasad, S. R. M. Prasanna
{"title":"Noise robust multimodal biometric person authentication system using face, speech and signature features","authors":"P., Kartik, R. V. S. s., Vara Prasad, S. R. M. Prasanna","doi":"10.1109/INDCON.2008.4768795","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768795","url":null,"abstract":"In this work, we present a multimodal biometric system using face, speech and signature features which is robust to noise. Face recognition is done using subspace, principal component analysis (PCA) and linear discriminant analysis (LDA) techniques. Speaker recognition system is built using mel frequency cepstral coefficients (MFCC) for feature extraction and vector quantization (VQ) for pattern matching. An off-line signature recognition system is built using vertical and horizontal projection profiles (VPP, HPP) and discrete cosine transform (DCT) for feature extraction. A multimodal biometric database with face, speech and signature biometric features has been collected for 30 users. A multimodal biometric system is built using score level fusion. Sum rule was used for the fusion of the biometric scores. Experimental results show the efficacy of the multimodal biometric system when the biometric data is affected by noise.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132480944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modeling and simulation of an electro-hydraulic actuation system through subsystem characterization","authors":"J. Das, K. Das, R. Saha, S. Mookherjee, D. Sanyal","doi":"10.1109/INDCON.2008.4768777","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768777","url":null,"abstract":"An electro-hydraulic actuation system with flow and pressure transmitters and LVDT integrated to a data-acquisition system has been investigated here for identifying an appropriate model necessary for dynamic performance prediction through MATLAB/SIMULINK simulation. The actuation test system consists of an electrically driven hydraulic power pack feeding a linear actuator with a proportional valve controlling the flow to and from the actuator, while the power pack includes a reservoir, fixed-discharge axial piston pump, a pressure relief valve and a non-return valve. A non-linear state-space model for the system has been obtained with the command electrical signal to the proportional valve as the input and the actuator displacement as the output. Experimental characterization of actuator friction, the relief valve, the non-return valve and the transmission line along with a neural-network model for the proportional valve has been carried out and integrated to the model of the actuation dynamics. The model has then been used for performance prediction to assess the importance of each subsystem model through a comparison against experimental results. It has been found that the contributions of the valve modeling and actuator friction are significant. A need to characterize the end-cushioning effect has been identified.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132053085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of VF-DPC PWM converter based STATCOM","authors":"S. Venkateshwarlu, B. Muni, A. Rajkumar","doi":"10.1109/INDCON.2008.4768762","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768762","url":null,"abstract":"The use of STATCOM is a practical method for improving quality of power in distribution systems. In this paper direct power control of three-phase pulse width modulated converter based STATCOM without line voltage sensors is presented. This system is based on virtual flux estimation. Theoretical principles of this method are presented along with simulation results. Advantages of VFDPC-SVM over other DPC techniques presented. The main advantages of DPC-SVM are its simple algorithm, good dynamic response and constant switching frequency operation. This paper compares VFDPC with lookup table and VFDPC with SVM approaches applied to PWM voltage source converters. DPC strategies use lookup table SVM, predictive vector selection or combination of more than one approach for generation of PWM pattern. Power calculations can be done using phase variables or instantaneous power theory. Analysis of VFDPC SVM pulse width modulated converter based STATCOM have been done in MATLAB/Simulink environment. Simulation results are presented. PWM pulses are generated and fed to Converter so as to maintain the power factor of the source at unity. Total harmonic distortion is calculated both in inverter output voltage and source current.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130852508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimal reactive power allocation using PSO-DV hybrid algorithm","authors":"K. Vaisakh, P. Rao","doi":"10.1109/INDCON.2008.4768834","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768834","url":null,"abstract":"The reactive power allocation aspect has received considerable attention in present day power system operation and control. At heavy/light load periods, voltage control is provided by the controllable reactive sources, which are scattered throughout the transmission network, function in co-ordination. Reactive power dispatch problem can be formulated as a nonlinear constrained optimization problem. This paper presents a Particle Swarm with Differentially perturbed Velocity (PSO-DV) hybrid algorithm for optimal reactive power dispatch and voltage control of power systems. The PSO-DV is applied for optimal power system reactive power dispatch on an IEEE 30-bus system in which the control of bus voltages, tap position of transformers and reactive power sources are involved to minimize the transmission loss of the power system. The simulation results show the effectiveness and robustness of the proposed approach.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121555521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biased model reduction of discrete interval system by differentiation technique","authors":"Dr. N. Pappa, T. Babu","doi":"10.1109/INDCON.2008.4768836","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768836","url":null,"abstract":"A number of techniques for the reduction of interval system have been presented by various researchers. But the validity of the method is based on the resulting error by the model reduction. The system with parameter variations within bounds creates intervals in the coefficients of the system polynomial; hence the system is called interval system.In this paper, a differentiation technique is applied to interval system to obtain, lower order stable models retaining the initial Markov parameters and time moments of the original system. These models give better approximation, for both, steady state and transient characteristics of the time response. Application of Routh type arrays, reciprocal transformations and the time moments of the nth order original system are all avoided in this model reduction of interval system, otherwise it will further complicate the analysis of interval system. So the new technique applied to the interval system, is a direct method, simple and computationally better than the other methods, involving differentiation technique.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116075004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cost minimization and its realization on induction motor design via SPEED/PC-IMD","authors":"C. T. Raj, S. P. Srivastava, P. Agarwal","doi":"10.1109/INDCON.2008.4768799","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768799","url":null,"abstract":"This paper presents an optimal design of poly-phase induction motor using Particle Swarm Optimization (PSO). The optimization algorithm considers the cost of active material as objective function and nine performance related items as constraints. The PSO algorithm was implemented on two test motors (7.5 kW and 110 kW) and their results are compared with the Constrained Rosen Brock Method (Hill algorithm) and normal design. Optimized variables are realized by SPEED (Scottish Power Electronics and Electric Drives) software. Optimal design results are theoretically justified. Some standard benchmarking problems are used to validate the PSO algorithm. C++ code is used for implementing entire algorithms.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114296869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Repetitive controller for periodic disturbance rejection in motor-gear transmission system","authors":"G. Sangeetha, J. Jacob","doi":"10.1109/INDCON.2008.4768785","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768785","url":null,"abstract":"In control systems, disturbance or reference inputs invariably include a significant periodic component with a known period. Repetitive controllers are those control elements that strategically reduce or nullify the effect of these repeating signals. In motor gear transmission system, the tooth-to-tooth error manifests as periodic disturbance. Repetitive control has by now proved as an effective control scheme for improving periodic disturbance attenuation performance. This paper aims to formulate the repetitive controller design for the Motor-Gear system as an optimization problem with an LMI (Linear Matrix Inequality) constraint on the free parameter of the bandwidth of the filter and demonstrate the effect of such a controller through MATLAB simulation. The filter is used to cater to the stability requirements of the system with the repetitive controller incorporated with it. The form of the repetitive controller is based on a single parameter determined by the fundamental period of the disturbance. It is demonstrated through the results that the repetitive controller indeed reduces the periodic disturbances. Also as the bandwidth is increased, stability is found to be at stake whereas the disturbance rejection is affected if the bandwidth is reduced.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127771338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}