Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153302
J. Kania, T. Panchal, V. Patel, Kaushal R. Patel
For the high-performance sensor-less vector control of an induction motor, the accuracy of the motor parameters has an important impact on the performance of the whole system. In this paper the method for self commissioning of inverter fed induction motor drive is presented. The method is based on three frequency-domain tests, performed at standstill, avoiding then the locked-rotor and no-load tests. The proposed algorithm can be implemented in standard motor drives in order to automatically perform self-commissioning.
{"title":"Self commissioning: A unique feature of inverter-fed induction motor drives","authors":"J. Kania, T. Panchal, V. Patel, Kaushal R. Patel","doi":"10.1109/NUICONE.2011.6153302","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153302","url":null,"abstract":"For the high-performance sensor-less vector control of an induction motor, the accuracy of the motor parameters has an important impact on the performance of the whole system. In this paper the method for self commissioning of inverter fed induction motor drive is presented. The method is based on three frequency-domain tests, performed at standstill, avoiding then the locked-rotor and no-load tests. The proposed algorithm can be implemented in standard motor drives in order to automatically perform self-commissioning.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134115505","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153278
Umang Thaker, Siddharth Iyer, Y. Trivedi
In this paper, we consider MISO systems with N transmit antennas and assume slowly time-varying channel. We select two out of N antennas and use Alamouti transmit diversity. At the receiver, we use zero-forcing detector and obtain expression of BER as a function of correlation (ρ) between two consecutive channel coefficients. We have also discussed some special cases, for example N = 2 transmit antennas and ρ = 1, and compared them with available results in literature.
{"title":"Performance analysis of zero forcing detector for Alamouti transmit diversity with antenna selection in time varying channel","authors":"Umang Thaker, Siddharth Iyer, Y. Trivedi","doi":"10.1109/NUICONE.2011.6153278","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153278","url":null,"abstract":"In this paper, we consider MISO systems with N transmit antennas and assume slowly time-varying channel. We select two out of N antennas and use Alamouti transmit diversity. At the receiver, we use zero-forcing detector and obtain expression of BER as a function of correlation (ρ) between two consecutive channel coefficients. We have also discussed some special cases, for example N = 2 transmit antennas and ρ = 1, and compared them with available results in literature.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127816473","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153309
R. Gandhi, D. Adhyaru
This paper introduces a new method for deriving the virtual linearized model of a given non-linear system on the basis of convergence. Once the virtual model for a given system is obtained, it is very simple to analyze the behavior of given non-linear system. To represent an idea regarding the concept of contraction analysis an example of simple pendulum system has been taken and the virtual linearized model has been derived with the help of the Contraction analysis.
{"title":"Stability analysis of a pendulum based system using contraction analysis","authors":"R. Gandhi, D. Adhyaru","doi":"10.1109/NUICONE.2011.6153309","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153309","url":null,"abstract":"This paper introduces a new method for deriving the virtual linearized model of a given non-linear system on the basis of convergence. Once the virtual model for a given system is obtained, it is very simple to analyze the behavior of given non-linear system. To represent an idea regarding the concept of contraction analysis an example of simple pendulum system has been taken and the virtual linearized model has been derived with the help of the Contraction analysis.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125755953","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153229
Ashutosh Gupta, S. Naidu, T. Srinivasan, B. Krishna
Derivation of height information from stereo images is a trivial problem in the field of photogrammetry, remote sensing and computer vision. The algorithms for generation of height information from the stereo imagery in the form of Digital Elevation Model (DEM) primarily involve computationally complex image matching procedures. In this paper, we propose a Graphic Processing Units (GPU) based method that significantly improves the computational performance of the hierarchical image matching technique used for DEM generation. We have compared our results against single and multithreaded CPU based implementations. Experiments performed on Chandrayaan-1 Terrain Mapping Camera stereo image datasets using the Nvidia Tesla M2070 GPU show that the new method can perform as fast as 138 times compared to single threaded implementation and 5 times compared to a multithreaded implementation running on a multi CPU system.
从立体图像中提取高度信息是摄影测量、遥感和计算机视觉领域中的一个小问题。以数字高程模型(DEM)的形式从立体图像中生成高度信息的算法主要涉及计算复杂的图像匹配过程。在本文中，我们提出了一种基于图形处理单元(GPU)的方法，该方法显着提高了用于DEM生成的分层图像匹配技术的计算性能。我们将结果与基于单线程和多线程CPU的实现进行了比较。使用Nvidia Tesla M2070 GPU在Chandrayaan-1地形测绘相机立体图像数据集上进行的实验表明，新方法的执行速度是单线程实现的138倍，是在多CPU系统上运行的多线程实现的5倍。
{"title":"A GPU based image matching approach for DEM generation using stereo imagery","authors":"Ashutosh Gupta, S. Naidu, T. Srinivasan, B. Krishna","doi":"10.1109/NUICONE.2011.6153229","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153229","url":null,"abstract":"Derivation of height information from stereo images is a trivial problem in the field of photogrammetry, remote sensing and computer vision. The algorithms for generation of height information from the stereo imagery in the form of Digital Elevation Model (DEM) primarily involve computationally complex image matching procedures. In this paper, we propose a Graphic Processing Units (GPU) based method that significantly improves the computational performance of the hierarchical image matching technique used for DEM generation. We have compared our results against single and multithreaded CPU based implementations. Experiments performed on Chandrayaan-1 Terrain Mapping Camera stereo image datasets using the Nvidia Tesla M2070 GPU show that the new method can perform as fast as 138 times compared to single threaded implementation and 5 times compared to a multithreaded implementation running on a multi CPU system.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128350409","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153294
Hirak K. Shah, P. Kapil, M. Shah
Flexible AC Transmission Systems (FACTS) technology opens up new opportunities for controlling power and enhancing the usable capacity of present as well as new and upgraded lines. STATCOM is a FACTS device which can independently control flow of reactive power. This paper presents the simulation and analysis of a STATCOM (Static Synchronous Compensator) for voltage dip mitigation and other problems like correcting voltage sag and swell, which is based on a 2-level Voltage Source Converter. Simulations are carried out in MATLAB/Simulink to validate the performance of the STATCOM.
{"title":"Simulation & analysis of distribution static compensator (D-STATCOM)","authors":"Hirak K. Shah, P. Kapil, M. Shah","doi":"10.1109/NUICONE.2011.6153294","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153294","url":null,"abstract":"Flexible AC Transmission Systems (FACTS) technology opens up new opportunities for controlling power and enhancing the usable capacity of present as well as new and upgraded lines. STATCOM is a FACTS device which can independently control flow of reactive power. This paper presents the simulation and analysis of a STATCOM (Static Synchronous Compensator) for voltage dip mitigation and other problems like correcting voltage sag and swell, which is based on a 2-level Voltage Source Converter. Simulations are carried out in MATLAB/Simulink to validate the performance of the STATCOM.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126721990","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153315
R. K. Pandey, S. Panda
Bone fracture treatment commonly involves drilling of bone to produce hole for the screw insertion to fixate the fracture devices and implants. The use of high speed cutting tool during orthopaedic surgical process causes increase in the bone temperature which can cause thermal ostenecrosis. Some research have been carried out in this field but there is no consensus on the most suitable drill geometry and optimum drilling parameters to be used. This paper reviews the process of bone drilling, discusses about their problem and suggests optimum drill design and drilling parameters to avoid bone necrosis.
{"title":"Bone drilling: An area seeking for improvement","authors":"R. K. Pandey, S. Panda","doi":"10.1109/NUICONE.2011.6153315","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153315","url":null,"abstract":"Bone fracture treatment commonly involves drilling of bone to produce hole for the screw insertion to fixate the fracture devices and implants. The use of high speed cutting tool during orthopaedic surgical process causes increase in the bone temperature which can cause thermal ostenecrosis. Some research have been carried out in this field but there is no consensus on the most suitable drill geometry and optimum drilling parameters to be used. This paper reviews the process of bone drilling, discusses about their problem and suggests optimum drill design and drilling parameters to avoid bone necrosis.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122580920","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153270
U. Mehta, K. Dasgupta, N. Devashrayee, H. Parmar
Test Power is the major issues for the external testing of IP core based SoC. From a large pool of diverse available techniques for switching activity reduction during the external testing, only those schemes like ‘don't care bit filling’ and ‘reordering’ which do not require any modification in internal structure and do not demand use of any test development tool is used for SoC containing IP cores with hidden structure. The sequence of test vectors plays a significant role in capture power. The change in state of flipflop during capture depends upon the states of that flipflop in current scan-out vector and next scan-in vector. In this paper, the Artificial Intelligence Based Scan Vector Reordering (ASVR) is proposed to optimize the capture power reduction. This method uses very popular A∗ algorithm to reorder the test vectors to minimize the switching activity during capture operation.
{"title":"Artificial intelligence based scan vector reordering for capture power minimization","authors":"U. Mehta, K. Dasgupta, N. Devashrayee, H. Parmar","doi":"10.1109/NUICONE.2011.6153270","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153270","url":null,"abstract":"Test Power is the major issues for the external testing of IP core based SoC. From a large pool of diverse available techniques for switching activity reduction during the external testing, only those schemes like ‘don't care bit filling’ and ‘reordering’ which do not require any modification in internal structure and do not demand use of any test development tool is used for SoC containing IP cores with hidden structure. The sequence of test vectors plays a significant role in capture power. The change in state of flipflop during capture depends upon the states of that flipflop in current scan-out vector and next scan-in vector. In this paper, the Artificial Intelligence Based Scan Vector Reordering (ASVR) is proposed to optimize the capture power reduction. This method uses very popular A∗ algorithm to reorder the test vectors to minimize the switching activity during capture operation.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"7 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116739980","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153314
A. B. Yadav, P. Shukla
Water being scares and the cost of making it available is so high that it is essential to run the plant efficiently and safely so that wastage is minimized. Financial resources are always constrained in a growing economy like India and hence the capital investment should be safe guarded so as to provide a minimum life of 20 years with vary nominal maintenance cost. Availability of trained and skilled men power for operational maintenance in these inaccessible locations is a major problem. For all the above three problems the common solution is to provide a reliable instrumentation, control and automation package with a SCADA which can be connected to a remote monitoring station in future.
{"title":"Augmentation to water supply scheme using PLC & SCADA","authors":"A. B. Yadav, P. Shukla","doi":"10.1109/NUICONE.2011.6153314","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153314","url":null,"abstract":"Water being scares and the cost of making it available is so high that it is essential to run the plant efficiently and safely so that wastage is minimized. Financial resources are always constrained in a growing economy like India and hence the capital investment should be safe guarded so as to provide a minimum life of 20 years with vary nominal maintenance cost. Availability of trained and skilled men power for operational maintenance in these inaccessible locations is a major problem. For all the above three problems the common solution is to provide a reliable instrumentation, control and automation package with a SCADA which can be connected to a remote monitoring station in future.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121480803","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153224
Lathigara Amit Maheshbhai
The advent of Grid environments made feasible the solution of computational intensive problems in a reliable and cost-effective way. As scheduling carry out more complex and mission-critical applications, Quality of Service (QoS) analysis serves to ensure that each application meets user requirements. In that frame, author presents a novel Ant colony algorithm with a quick convergence of ant to move from source to destination which allows the mapping of job processes to Grid provided services assuring at the same time end-to-end provision of QoS (cost, makespan and reliability) based on user-defined parameters and preferences. Paper also demonstrate the operation of the implemented algorithm using three different heuristics and evaluate its effectiveness using a Grid scenario.
网格环境的出现使得以可靠和经济的方式解决计算密集型问题成为可能。当调度执行的应用程序越来越复杂和任务关键时，QoS (Quality of Service)分析可以确保每个应用程序满足用户需求。在此框架下，作者提出了一种新颖的蚁群算法，该算法具有从源到目标的快速收敛性，允许将作业过程映射到网格提供的服务，同时保证基于用户自定义参数和偏好的端到端QoS(成本，最大跨度和可靠性)的提供。本文还使用三种不同的启发式方法演示了实现算法的操作，并使用网格场景评估了其有效性。
{"title":"Job scheduling based on reliability, time and cost constraints under Grid environment","authors":"Lathigara Amit Maheshbhai","doi":"10.1109/NUICONE.2011.6153224","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153224","url":null,"abstract":"The advent of Grid environments made feasible the solution of computational intensive problems in a reliable and cost-effective way. As scheduling carry out more complex and mission-critical applications, Quality of Service (QoS) analysis serves to ensure that each application meets user requirements. In that frame, author presents a novel Ant colony algorithm with a quick convergence of ant to move from source to destination which allows the mapping of job processes to Grid provided services assuring at the same time end-to-end provision of QoS (cost, makespan and reliability) based on user-defined parameters and preferences. Paper also demonstrate the operation of the implemented algorithm using three different heuristics and evaluate its effectiveness using a Grid scenario.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132565805","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}
Pub Date : 2011-12-01DOI: 10.1109/NUICONE.2011.6153286
S. Sangeetha, S. Jeevananthan
This paper suggests a programming tool to calculate the switching angle required for eliminating the selected harmonics in a multilevel inverter (MLI). A systematic analysis and algorithm based off-line precalculation of switching angle for a range of modulation index using resultant theory is presented. The polynomial reduction is supported by Mathematica 6 and the accurate computation of switching instants is done by developing a tool in Visual C++ with an user friendly interface. The software tool objective is of twofold. The first one is to reduce the lower order dominant harmonics and second one is to minimize the total harmonic distortion (THD). The program developed is first of its kind, and can be successfully applied to n-level MLI. The efficient algorithm calculates all the possible triplent roots in a single step for a given input. Representative discussion and results are presented for a seven level cascaded inverter to eliminate the third, fifth and seventh harmonics. The triumph of the algorithm is validated by using Matlab/Simulink toolbox.
{"title":"A software tool for selective harmonic elimination in multilevel inverters using Mathematica and Visual C++","authors":"S. Sangeetha, S. Jeevananthan","doi":"10.1109/NUICONE.2011.6153286","DOIUrl":"https://doi.org/10.1109/NUICONE.2011.6153286","url":null,"abstract":"This paper suggests a programming tool to calculate the switching angle required for eliminating the selected harmonics in a multilevel inverter (MLI). A systematic analysis and algorithm based off-line precalculation of switching angle for a range of modulation index using resultant theory is presented. The polynomial reduction is supported by Mathematica 6 and the accurate computation of switching instants is done by developing a tool in Visual C++ with an user friendly interface. The software tool objective is of twofold. The first one is to reduce the lower order dominant harmonics and second one is to minimize the total harmonic distortion (THD). The program developed is first of its kind, and can be successfully applied to n-level MLI. The efficient algorithm calculates all the possible triplent roots in a single step for a given input. Representative discussion and results are presented for a seven level cascaded inverter to eliminate the third, fifth and seventh harmonics. The triumph of the algorithm is validated by using Matlab/Simulink toolbox.","PeriodicalId":206392,"journal":{"name":"2011 Nirma University International Conference on Engineering","volume":"2019 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134130962","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}
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