Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)最新文献

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Fault-tolerant kinematically redundant robots 容错运动冗余机器人
C. Caldwell, R. Roberts
{"title":"Fault-tolerant kinematically redundant robots","authors":"C. Caldwell, R. Roberts","doi":"10.1109/SSST.2002.1027072","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027072","url":null,"abstract":"Fault tolerance is a critical issue for teleoperated or autonomous robotic systems that are operating in hazardous and/or remote environments where joint failures are likely. A single joint failure can render an otherwise dexterous manipulator useless. In this article, we examine two measures of fault tolerance. In addition to determining optimally fault tolerant configurations, these measures can be used to control the robot in anticipation of a joint failure and to design fault tolerant robot geometries.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116773717","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}
引用次数: 8
Steering controller design using scale-model vehicles 采用比例模型车辆进行转向控制器设计
S. R. Burns, R. O'Brien, J. Piepmeier
{"title":"Steering controller design using scale-model vehicles","authors":"S. R. Burns, R. O'Brien, J. Piepmeier","doi":"10.1109/SSST.2002.1027092","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027092","url":null,"abstract":"A scale-model, experimental apparatus is developed to design and evaluate steering controller designs. The controller is designed using linear quadratic optimal control methods on a standard four-state vehicle model. The apparatus simulates the human driver using a scale-model vehicle, a treadmill, and a vision system.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125003941","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}
引用次数: 10
A proposal for measuring software productivity in a working environment 在工作环境中度量软件生产力的建议
C. Peck, D. Callahan
{"title":"A proposal for measuring software productivity in a working environment","authors":"C. Peck, D. Callahan","doi":"10.1109/SSST.2002.1027063","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027063","url":null,"abstract":"In the software industry one of the most central business factors is programmer productivity. While there is a major advantage in being able to measure and thus manage this most important factor, there is no widely accepted framework to measure software productivity. This document outlines a proposal for a study to attempt to measure software programmer productivity. The document proposes an outline for a basic measure of software productivity.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116079316","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}
引用次数: 5
Evaluation of the measurement update interval for an adaptive radar scheduler 自适应雷达调度器测量更新间隔的评估
A. Fatemi, N. Namazi, G. Foster
{"title":"Evaluation of the measurement update interval for an adaptive radar scheduler","authors":"A. Fatemi, N. Namazi, G. Foster","doi":"10.1109/SSST.2002.1027066","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027066","url":null,"abstract":"This paper presents a technique for determining the radar scheduler update interval. Given the system state-variable model and its statistical data, a matrix expression for the general order predictor error covariance matrix is derived. A cost function of this covariance matrix is solved to regulate the radar's Kalman filter measurement update intervals. Simulation experiments are performed and results presented.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128235978","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}
引用次数: 0
Genetic algorithms-based parameter optimization of a non-destructive damage detection method 基于遗传算法的无损损伤检测参数优化方法
E. Sazonov, P. Klinkhachorn, U. Halabe
{"title":"Genetic algorithms-based parameter optimization of a non-destructive damage detection method","authors":"E. Sazonov, P. Klinkhachorn, U. Halabe","doi":"10.1109/SSST.2002.1027024","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027024","url":null,"abstract":"The method of strain energy mode shapes allows the determination of changes in structural integrity from changes in the vibrational response of a structure. The modified method presented does not require knowledge of the undamaged state of the structure. Genetic algorithms (GA) are applied to produce a sufficiently optimized amplitude characteristic of a filter used to extract damage information from strain energy mode shapes. Finite element modeling has been used to produce a training data set with the known location of damages. The amplitude characteristic of the filter has been encoded as a genetic string where the pass coefficient for each harmonic of its discrete Fourier transform representation is a number between zero and one in 8-bit Gray code. The genetic optimization has been performed based on the minimization of the signal-to-distortion ratio. The amplitude characteristic of the filter was not limited to any specific configuration, i.e. either low-or high-pass or specific cut-off frequencies. The results obtained from the GA confirmed the theoretical predictions and allowed improvement in the method's sensitivity to damages of lower magnitude.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129898505","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}
引用次数: 12
An accelerometer-based physical rehabilitation system 一种基于加速度计的物理康复系统
M. Milenkovic, E. Jovanov, J. Chapman, D. Raskovic, J. Price
{"title":"An accelerometer-based physical rehabilitation system","authors":"M. Milenkovic, E. Jovanov, J. Chapman, D. Raskovic, J. Price","doi":"10.1109/SSST.2002.1027005","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027005","url":null,"abstract":"This paper presents a portable physical rehabilitation monitoring system based on a personal network of intelligent sensors. Rehabilitation is traditionally carried out in hospitals under supervision of qualified personnel. However, significantly better results could be achieved using out-of-hospital portable monitoring to allow patients computer-assisted rehabilitation in their homes. The new generation of personal digital assistants (PDA), such as Compaq iPAQ, offers large processing power, decent graphical user interface, and compact flash based secondary memory. Therefore, they are perfectly suited for portable monitoring units. Individual sensors are positioned on limbs to analyze movements using 2-axis MEMS accelerometers. The system monitors periods and forces of individual sensors, visualizing relevant physiological data in real-time on PDA, and archiving progress data on compact flash. A specialist supervises current advance and sets new optimum rehabilitation modes, thresholds for forces, step periods, etc. The system generates real-time warnings when predefined thresholds have been exceeded. We are developing a system for hip and knee replacement rehabilitation, as well as general physical rehabilitation. Other possible applications of our system include rehabilitation of stroke and heart attack patients.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123383293","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}
引用次数: 38
The costs and benefits of using complex 2-D Gabor filters in a filter-based fingerprint-matching system 在基于滤波器的指纹匹配系统中使用复杂二维Gabor滤波器的成本和收益
M. Horton, P. Meenen, R. Adhami, P. Cox
{"title":"The costs and benefits of using complex 2-D Gabor filters in a filter-based fingerprint-matching system","authors":"M. Horton, P. Meenen, R. Adhami, P. Cox","doi":"10.1109/SSST.2002.1027028","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027028","url":null,"abstract":"In this paper, we investigate the utility of complex, 2-D Gabor filter for a fingerprint matching system. Previous approaches have used an even symmetric 2-D Gabor filter to perform fingerprint feature extraction processing. Several processing methods using a complex filter are explored and compared to the even-symmetric case. Conclusions are drawn based upon both the results of using a complex filter and the added computational costs of doing so.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124145590","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}
引用次数: 13
Analysis of a linear variable reluctance motor with magnetically coupled phases 磁耦合相线性变磁阻电机的分析
D.G. Taylor, R. Ahmed
{"title":"Analysis of a linear variable reluctance motor with magnetically coupled phases","authors":"D.G. Taylor, R. Ahmed","doi":"10.1109/SSST.2002.1027038","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027038","url":null,"abstract":"This paper deals with the magnetic modeling of a type of linear variable reluctance motor. The motor under study is a three-phase motor that exhibits strong magnetic coupling between its phases. Two modeling techniques are used: the magnetic circuit analysis is emphasized due to its simplicity and computational efficiency; and the finite element analysis is used primarily to provide accurate benchmark data for comparison. Qualitative agreement between the two modeling techniques is demonstrated.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130859284","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}
引用次数: 11
Automatic generation control before and after deregulation 解除管制前后的自动发电控制
N. Bekhouche
{"title":"Automatic generation control before and after deregulation","authors":"N. Bekhouche","doi":"10.1109/SSST.2002.1027059","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027059","url":null,"abstract":"This paper addresses and discusses how AGC is formulated before and after deregulation. AGC is among a set of services called ancillary services defined by the Federal Energy Regulatory Commission (FERC). To allow open transmission access and encourage a competitive wholesale electric power market, deregulation was introduced by FERC in 1995 in its Notice of Proposed Rulemaking (NOPR). Before deregulation ancillary services, including AGC, were provided by a single utility company called a control area that owns both transmission and generation systems. This type of utility is known as a Vertically Integrated Utility (VIU). Since the inception of deregulation the concept of VIU is no longer applicable and the power system structure has changed and allowed specialized companies for generation (GenCos), transmission (TransCos), distribution (DisCos), and Independent Contract Administrators (ICA) to emerge. The paper focuses on the formulation and operation of AGC to accommodate this new environment. It also addresses provision of other ancillary services in the deregulated framework.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131094187","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}
引用次数: 28
Adaptive rate coding for image data transmission 图像数据传输的自适应速率编码
V. Bhaskar, L. Joiner
{"title":"Adaptive rate coding for image data transmission","authors":"V. Bhaskar, L. Joiner","doi":"10.1109/SSST.2002.1027045","DOIUrl":"https://doi.org/10.1109/SSST.2002.1027045","url":null,"abstract":"Punctured convolutional codes (PCCs) are necessary for applications requiring high data transmission rate. For efficient high rate codes, PCCs have been widely used to reduce the implementation complexity of the Viterbi decoder. The codes provide good bit-error-rate (BER) performance. A slowly time-varying frequency non-selective Rician fading channel is assumed. A finite-state Markov chain is used to model the time-varying channel. The error control system uses channel-state information to decode, which of the various codes should be used at any given moment. The paper provides a comparison of lower and higher rate codes in terms of coding gain and providing sufficient error control.","PeriodicalId":192962,"journal":{"name":"Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114392995","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}
引用次数: 2
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