The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory最新文献

{"title":"Control of Flexible Systems by Mathematical Programming","authors":"M. Nouri-Moghadam, I. Sadek","doi":"10.1109/SSST.1992.712291","DOIUrl":"https://doi.org/10.1109/SSST.1992.712291","url":null,"abstract":"A class of control problems for a damped distributed parameter system governed by a system of partial differential equations with side constraints (equality and/or inequality) is considered. The proposed approaches approximate each control force of the system by a Fourier-type series. In contrast to standard linear optimal control approaches, the method used here is based on the Mathematical programming approach, in which the necessary condition of optimality is derived as a system of linear algebraic equations. The proposed approach is easy to apply to a large class of control problems.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128345113","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":"Digital System for Configuration Detection","authors":"S. Park, Tae-Hyeong Kim","doi":"10.1109/SSST.1992.712346","DOIUrl":"https://doi.org/10.1109/SSST.1992.712346","url":null,"abstract":"This paper describes a digital system which detects the configuration of any RS-232C cable that has 25 pin connectors at both ends. The system uses a single chip microcomputer as the system controller for flexibility and cost effectiveness. The system controller sends the configuration information to a PC to be displayed on the CRT screen. A software program which controls the overall operation of the system is also described. The system can be further expanded to a universal configuration detector by adding programmability on the number of pins.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130017230","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":"Thrifty Technology Mapping With Rich Libraries","authors":"S. Viswanath, D. Reeves","doi":"10.1109/SSST.1992.712349","DOIUrl":"https://doi.org/10.1109/SSST.1992.712349","url":null,"abstract":"Technology mapping is used during logic synthesis to bind a circuit description to a given library of cells. The mapping process is divided into the phases of decomposition, matching and covering. We have developed a method of matching which is functional in nature, as opposed to the usual structural approach. The new matching technique allows the use of very large libraries. New techniques for decomposition and covering are also described. For circuits with fanout, we propose several heuristics for determining when to share and when to duplicate logic. These heuristics are quantitatively compared using a set of benchmark circuits.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121360946","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":"Approximate Parallel Implementations for On-Line Filtering","authors":"N. Bhattacharyya, J. Aravena","doi":"10.1109/SSST.1992.712203","DOIUrl":"https://doi.org/10.1109/SSST.1992.712203","url":null,"abstract":"This paper examines concurrent implementations for on-line digital filtering operations. The method presented is based on linear algebraic techniques that generate linear operations with reduced complexity and high degree of parallelism. A technique to develop parallel implementations for filters described by transfer functions is proposed. The tradeoff of complexity and accuracy of the approximations is studied. The optimal allocation of hardware modules is also discussed.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121517640","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":"Experimental Investigation of the Optical Noise Sensing Capabilities of the Brillouin Fiber Ring Amplifier","authors":"Hai Zhou, S. Cheng, Chung Yu","doi":"10.1109/SSST.1992.712310","DOIUrl":"https://doi.org/10.1109/SSST.1992.712310","url":null,"abstract":"An optical noise sensing scheme based on the high gain Brillouin fiber ring amplifier is investigated experimentally. The sensing mechanism is the result of the close relationship between the guided acoustic eigenmodes in the fiber and the resultant Brillouin scattering of an externally fed optical signal. Since these eigenmodes are thermal and vibrational in origin, and light scattering due to them is quite weak, they constitute a broadband noise source centered around the incident optical signal frequency. The Brillouin fiber ring amplifier is designed to have the capability to listen to such optical noise in the fiber, when the latter is subjected to ambient physical disturbances of a mechanical and thermal nature. By properly designing the system power pack, the fiber layout and sensing scheme, the proposed system can be robust and fault tolerant. Noise sensing is inherently multimeasurand, as opposed to traditional fiber-optic sensors, which are usually single-measurand. The proposed scheme can thus render sensing considerably more economical. This experimental feasibility study will thus concentrate on exploring the low noise sensing capability of the Brillouin fiber ring amplifier in a two-ring format, powered by a single laser. The first ring generates a Stokes wave to serve as the noise carrying signal in a fiber, while the second ring by varying GeO/sub 2/ doping generates a Stokes wave at slightly shifted wavelength, sufficiently apart from the signal Stokes as not to amplify it. The latter ring is thus designed to amplify only the Brillouin noise, which is normally about 6 x 10/sup -5/ of signal power. The high gain and low internal noise of the fiber ring are the promising features of this unique noise amplifier. The increasing usage of embedded fibers on structures to monitor structural integrity has prompted many sensing schemes, but none so far has demonstrated robustness and fault tolerance as required for practical application. Our proposed sensing scheme is expected to fill the gap.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121972935","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":"Expert Systems: A Computer Consultant Software Application for the 90's","authors":"P. Adams, G.L. Woodard, A. Williams, T. Clarke","doi":"10.1109/SSST.1992.712260","DOIUrl":"https://doi.org/10.1109/SSST.1992.712260","url":null,"abstract":"At the present time vendor-saturated markets have forced the drop in computer retail prices allowing a large percentage of today's households to have a computer or enter the market for one. Quite often these consumers call back to support hotlines for help in everything from getting started to troubleshooting various problems associated with computers. In many cases support personnel are swamped with angry, frustrated customers wanting some answers. We have proposed to alleviate problems of overload and inaccessibility by developing an expert system that would emulate a computer consultant to on-line and potential on-line customers. Theoretically, this system could be used by support personnel or by a user interfacing directly either by terminal or modem. This paper will describe our approach to solving this problem as well as the design of an expert system.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126514338","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":"Online Error Detection for Single and Multibit Errors in Logic Circuits","authors":"B. Kolla, P. Lala, K. Yarlagadda","doi":"10.1109/SSST.1992.712298","DOIUrl":"https://doi.org/10.1109/SSST.1992.712298","url":null,"abstract":"A new scheme for detecting single and multibit (unidirectional and bidirectional) errors using residue codes has been proposed. This procedure has been applied to circuits with outputs up to 8 bits. It has been shown that about 99% of all multibit errors can be detected using this scheme.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125966011","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":"Design and Development of the Avq Device","authors":"C. Stuart","doi":"10.1109/SSST.1992.712176","DOIUrl":"https://doi.org/10.1109/SSST.1992.712176","url":null,"abstract":"The Adaptive Vector Quantization (AVQ) device performs 4 to 1 compression and expansion of digitized voice data using the adaptive vector quantization algorithm. The device addresses off chip static RAM's to store and access the algorithm code book. Other than the RAM's and analog circuitry, the device is a one chip solution for both compression and decompression. The device was designed in a high level design language. It was then synthesized, simulated and laid out ala standard cell device. This talk will focus on the issues which came up during high level design I language synthesis, standard cell layout, and final timing verification.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128225971","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":"Photoluminescence Spectral Analysis of GaInAsSb Semiconductor Layers","authors":"L. Small, S. Iyer","doi":"10.1109/SSST.1992.712353","DOIUrl":"https://doi.org/10.1109/SSST.1992.712353","url":null,"abstract":"A program was written to simulate the peaks using a combination of the Gaussian and Lorentzian distributions. Each peak was simulated and normalized separately over the entire range and then all the data were added together to produce the final spectra. The fitting parameters used were peak intensity, half width, and wavenumber. In order to identify the origin of the spectral peaks, temperature dependence and incident intensity dependence was analyzed. Subroutines were included in the spectral program evaluating the Bimberg, ShockleyRheed, and Varshni relationships as well as output intensity as a function of input intensity. Error analysis was done using the least-square method. This was performed within the program itself so that the error was calculated for each run. The best fit was then determined by comparing the analytical data to the experimental data and minimizing the error.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131888262","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":"Multivariable Control of the Feedwater Subsystem of a Nuclear Steam Generator","authors":"J.L. Friedli, A. Alouani, R. A. Smoak","doi":"10.1109/SSST.1992.712318","DOIUrl":"https://doi.org/10.1109/SSST.1992.712318","url":null,"abstract":"This paper uses a linear quadratic Gaussian regulator with loop transfer recovery (LQG/LTR) to control the speed demand of a nuclear steam generator. The controller is simulated. Its performance and stability robustness are analyzed. The simulation results are presented and discussed in the paper.","PeriodicalId":359363,"journal":{"name":"The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132774458","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}