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1993 (25th) Southeastern Symposium on System Theory最新文献

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New DSP microprocessor-based programmable interface components 新型基于DSP微处理器的可编程接口组件
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522771
F. Simons, A. George
{"title":"New DSP microprocessor-based programmable interface components","authors":"F. Simons, A. George","doi":"10.1109/SSST.1993.522771","DOIUrl":"https://doi.org/10.1109/SSST.1993.522771","url":null,"abstract":"Two new interface components and their high-potential payoff applications are described. The architectures on which these components are based consist of a DSP microprocessor driving a digital-to-analog converter (DAC), and an analog-to-digital converter (ADC) driving a DSP microprocessor. These interface components could be described as smart DACs or smart ADCs, respectively.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116633113","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: 1
Matched field source detection and localization in high noise environments: A novel reduced-rank signal processing approach 高噪声环境下的匹配场源检测与定位:一种新的降阶信号处理方法
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522828
H. B. Riley, J. Tague
{"title":"Matched field source detection and localization in high noise environments: A novel reduced-rank signal processing approach","authors":"H. B. Riley, J. Tague","doi":"10.1109/SSST.1993.522828","DOIUrl":"https://doi.org/10.1109/SSST.1993.522828","url":null,"abstract":"A matched-field acoustic source localization technique using reduced-rank signal processing is described. The problem is posed as one of joint detection and parameter estimation in the face of unknown, structured noise. A reduced-rank likelihood ratio array processor is derived, and its ability to detect and localize sources of interest is demonstrated. A key feature of reduced-rank signal processing is its ability to discard undesirable information from data matrices by their low rank approximation. Computer simulations demonstrate its viability under a wide range of operating conditions.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124903911","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: 1
Programmable logic devices in undergraduate digital design courses 可编程逻辑器件在本科数字设计课程
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522814
M. Batchelder, D.S. Meliksetian
{"title":"Programmable logic devices in undergraduate digital design courses","authors":"M. Batchelder, D.S. Meliksetian","doi":"10.1109/SSST.1993.522814","DOIUrl":"https://doi.org/10.1109/SSST.1993.522814","url":null,"abstract":"It is pointed out that design automation tools and programmable logic devices allow the student to put the design into a single chip and test and debug the logical operations with a simulator. Students enjoy applying the programmable logic devices while gaining knowledge of current design practices. An actual senior design project is used as an example.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122926003","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: 1
The effects of a nearby biological body on the parameters of a small hand-held radio operating in the H.F. band (3MHz-30MHz) 附近生物对高频波段(3MHz-30MHz)小型手持无线电参数的影响
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522735
R. M. Cooper, R. Radcliff
{"title":"The effects of a nearby biological body on the parameters of a small hand-held radio operating in the H.F. band (3MHz-30MHz)","authors":"R. M. Cooper, R. Radcliff","doi":"10.1109/SSST.1993.522735","DOIUrl":"https://doi.org/10.1109/SSST.1993.522735","url":null,"abstract":"The effects of a nearby biological body on the efficiency and radiation patterns of a small hand-held radio operating in the H.F. band are determined by computer modeling. The close proximity of the radio operator's body results in the scattered field from the body reradiating and perturbing the known free-space current distribution in the antennas to some extent. However, due to the extremely small electrical size of the radiating system, this body-to-radio coupling is assumed to be minimal and henceforth neglected. Thus, a direct moment method is used to solve a volumetric electric field integral equation with the near field of the radio as the excitation field. Once the equivalent volumetric currents are determined, the efficiency and radiation patterns are found using these currents and the unperturbed free space current of the radio antenna.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131168692","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
LQG/LTR spacecraft attitude control LQG/LTR航天器姿态控制
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522782
T. Lahdhiri, A. Alouani
{"title":"LQG/LTR spacecraft attitude control","authors":"T. Lahdhiri, A. Alouani","doi":"10.1109/SSST.1993.522782","DOIUrl":"https://doi.org/10.1109/SSST.1993.522782","url":null,"abstract":"The control of pitch attitude and pitch momentum of an Earth-orbiting spacecraft using loop-shaping techniques based on the linear-quadratic-Gaussian/loop-transfer-recovery (LQG/LTR) methodology is considered. Attitude is measured by an Earth horizon sensor, and control torque is produced by magnetic torquer bars and a pitch momentum or reaction wheel. The controller must achieve good tracking, environmental disturbance rejection, and robustness to modeling errors. Loop-shaping filters are used so that the roll and yaw magnetic torquer bars control pitch attitude at low frequency, while the pitch wheel controls pitch attitude at high frequency. The controller design and the simulation results are presented and discussed.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115135045","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
Efficient numerical evaluation of the Kirchhoff field scattered from a hollow circular cylinder 空心圆柱散射基尔霍夫场的有效数值计算
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522734
R. Scharstein
{"title":"Efficient numerical evaluation of the Kirchhoff field scattered from a hollow circular cylinder","authors":"R. Scharstein","doi":"10.1109/SSST.1993.522734","DOIUrl":"https://doi.org/10.1109/SSST.1993.522734","url":null,"abstract":"A convenient and simple algorithm is derived for computing the Kirchhoff approximation for the field scattered by an acoustically hard tubular obstacle. Special Weber function evaluations are explicitly avoided through the use of the fast Fourier transforms (FFT) approximation for Fourier coefficients. Selected scattered diagram predictions are contrasted with the accurate solution of the Neumann boundary value problem.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"2675 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132583125","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
Range image measurement system for a mobile robot navigation 一种移动机器人导航距离图像测量系统
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522805
Y.H. Kim, C. Wu, Joseph Chikagwa
{"title":"Range image measurement system for a mobile robot navigation","authors":"Y.H. Kim, C. Wu, Joseph Chikagwa","doi":"10.1109/SSST.1993.522805","DOIUrl":"https://doi.org/10.1109/SSST.1993.522805","url":null,"abstract":"A high-speed laser range image acquisition device using off-the-shelf components is developed. The method uses a frame grabber and a frame processor that are commercially available on a PC to acquire a set of laser stripes in real time (at a frame rate), and process the set of laser stripes in a PC to obtain a range image. The use of a range image for improving the stability of the mobile robot navigation is discussed.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133167358","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: 1
A parallel architecture for performing real time multi-line optical character recognition 一种用于实时多行光学字符识别的并行结构
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522837
D. Andrews, R. Brown, C. Caldwell, L. Baladge, D. Faules, A. Hennessey, T. Murphy, P. Parkerson, E. Tesch, R. Timmerman
{"title":"A parallel architecture for performing real time multi-line optical character recognition","authors":"D. Andrews, R. Brown, C. Caldwell, L. Baladge, D. Faules, A. Hennessey, T. Murphy, P. Parkerson, E. Tesch, R. Timmerman","doi":"10.1109/SSST.1993.522837","DOIUrl":"https://doi.org/10.1109/SSST.1993.522837","url":null,"abstract":"The design of a multiprocessor parallel architecture for performing real-time multiline optical character recognition (MLOCR) is described. MLOCR is a computationally intensive application involving real-time digitization of images, pattern recognition, feature extraction, scaling, rotation and gray-scale thresholding, and character recognition. System organization, control and subsystem partitioning of MLOCR algorithms is discussed. System interprocess communications protocols and control of the multiple asynchronous processors are covered. Functional partitioning of algorithms onto each processor, bus definitions based on real time data communications bandwidths, and system control requirements are also discussed.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133196372","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: 4
The dynamics of a series resonant converter with third-order commutation network 三阶换相网络串联谐振变换器的动力学
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522740
O. Ojo, I. Bhat
{"title":"The dynamics of a series resonant converter with third-order commutation network","authors":"O. Ojo, I. Bhat","doi":"10.1109/SSST.1993.522740","DOIUrl":"https://doi.org/10.1109/SSST.1993.522740","url":null,"abstract":"Steady-state and dynamic modeling of the series resonant converter with third-order commutation network is presented. Concepts of harmonic balance and describing functions are used to derive state-space linearized equations which are used to characterize the system dynamic performance under variable frequency control. The influence of parasitic resistances (ESR) and the output filter component values on the dynamics of the converter are explored.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115342933","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: 7
Model reference adaptive control system hyperstability analysis 模型参考自适应控制系统的超稳定性分析
1993 (25th) Southeastern Symposium on System Theory Pub Date : 1993-03-07 DOI: 10.1109/SSST.1993.522791
Z. Chuan, J. Fagan
{"title":"Model reference adaptive control system hyperstability analysis","authors":"Z. Chuan, J. Fagan","doi":"10.1109/SSST.1993.522791","DOIUrl":"https://doi.org/10.1109/SSST.1993.522791","url":null,"abstract":"The stability of the model reference adaptive control system with external disturbance and unmodeling is discussed. Instead of Lyapunov's method, more general results have been acquired for the analysis of hyperstability. It is shown that if only the linear forward block can be made strictly positive real, then the globally asymptotical hyperstability of the error model structure will be guaranteed with no regard to the characteristic of nonlinear feedback block. The original model reference adaptive control system will also be globally asymptotically hyperstable.","PeriodicalId":260036,"journal":{"name":"1993 (25th) Southeastern Symposium on System Theory","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115781644","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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