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Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995最新文献

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A meta-interpreter for circuit-extraction 用于电路提取的元解释器
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.522010
K. Thirunarayan
{"title":"A meta-interpreter for circuit-extraction","authors":"K. Thirunarayan","doi":"10.1109/NAECON.1995.522010","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522010","url":null,"abstract":"The design of a VLSI circuit consists of a description of the circuit in terms of its components and subcomponents, at various levels of detail. To verify that the layout of a VLSI circuit conforms to its design, one needs to work backwards from the lowest-level description of the circuit and recognize the higher-level components it constitutes. This paper is concerned with the application of logic programming techniques in the formal verification of the structural correctness of the VLSI circuit layouts. In particular, we review Michael Dukes' Generalized Extraction System (1990) that compiles design descriptions into a set of extraction rules, and then study the benefits and the limitations of using a meta-interpreter approach to extraction.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123283898","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 design of unconstrained digital PID controllers 无约束数字PID控制器的遗传设计
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521982
B. Porter, D. Hicks
{"title":"Genetic design of unconstrained digital PID controllers","authors":"B. Porter, D. Hicks","doi":"10.1109/NAECON.1995.521982","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521982","url":null,"abstract":"In previous genetic design procedures, the equations for the digital PID controllers were incorporated into the genetic algorithm in order to obtain optimally tuned values of various controller parameters for finite sampling frequencies. The performance of PID controllers constrained by such design equations may be sub-optimal and so this paper illustrates the use of genetic algorithms in selecting controller matrices for PID controllers without using controller design equations. This unconstrained genetic design methodology is illustrated in this paper by the design of model-following flight-control systems for the F-16 aircraft.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121611302","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: 6
Real-time tracking control of a DC motor using a neural network 基于神经网络的直流电机实时跟踪控制
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521998
R. Ahmed, K. Rattan, I. Khalifa
{"title":"Real-time tracking control of a DC motor using a neural network","authors":"R. Ahmed, K. Rattan, I. Khalifa","doi":"10.1109/NAECON.1995.521998","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521998","url":null,"abstract":"Neural networks are well-suited for the modeling and control of complex physical systems because of their ability to handle complex input-output mapping (through supervised learning) without detailed analytical model of the systems. This paper investigates a Multilayer Neural Network (MNN) for the real-time identification and control of a DC motor. The MNN is first trained to learn the inverse dynamics of the system and after the training is complete, the neural network is used as a feedforward controller to generate the input voltage for the motor to follow a pre-selected trajectories in position and speed. The training data is generated from the hardware setup (DC motor and servo amplifier) by applying a control voltage to the servo amplifier and observing the system output (motor speed). The main advantage of this scheme is that it does not require any knowledge of the system dynamics (and its nonlinear characteristics) and therefore treat the system as a black box. Experimental results show that the MNN is capable of identifying the motor system accurately and is able to control its position and speed with high degree of accuracy, even in the presence of disturbances.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125655882","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: 18
Benefits and challenges of integrated sensor systems 集成传感器系统的优势和挑战
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521964
B. Rich, P.J. Lehnerd, J. A. Gracia
{"title":"Benefits and challenges of integrated sensor systems","authors":"B. Rich, P.J. Lehnerd, J. A. Gracia","doi":"10.1109/NAECON.1995.521964","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521964","url":null,"abstract":"Projection of avionics system costs shows unacceptable escalation as a percentage of flyaway cost. Time sharing of RF modules between Radar, EW and CNI offers savings. The Air Forces' PAVE PACE program defined the benefits and initial architecture approaches. From this, an optimum Integrated Sensor System (ISS) design was defined that reduces the life cycle cost of the fleet of vehicles using the common modules. The ISS program/sup 1/ will design, build and test modules to prove the approach. Challenges to overcome include system complexity, real time control, test and calibration, and diagnostics. The most stressing requirements were determined by analyzing requirements for Radar, EW and CNI. Open interface specifications and module partitioning were developed that can meet all the requirements.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129324946","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
Open system avionics architectures where we are today and where we need to be tomorrow 开放系统航空电子架构，我们今天和明天需要的地方
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521949
C. Roark, B. Kiczuk
{"title":"Open system avionics architectures where we are today and where we need to be tomorrow","authors":"C. Roark, B. Kiczuk","doi":"10.1109/NAECON.1995.521949","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521949","url":null,"abstract":"Over the last three years, open system avionics architecture concepts have been addressed by the avionics community as a method for increasing affordability. The Naval Air Systems Command (Nav Air) led Advanced Avionics Architecture and Technology Review team of 1992, followed by the multiservice Avionics Engineering SubBoard (AESB) implementation phase team are two examples. The Perry memo and formation of the Open Systems Joint Task Force (OS-JTF) are further evidence of the importance placed on open systems at the DoD level. This paper summarizes these activities and their importance. Examples of the savings that can be expected by application of open systems are presented. Finally, significant on-going work along with critical technologies and concepts that need to be matured to make open systems successful are discussed.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128667973","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
An initialization method for group tracking 组跟踪的初始化方法
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521955
Chen-yang Yang, Jian-Ming Qu, S. Mao, Shao-hong Li
{"title":"An initialization method for group tracking","authors":"Chen-yang Yang, Jian-Ming Qu, S. Mao, Shao-hong Li","doi":"10.1109/NAECON.1995.521955","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521955","url":null,"abstract":"In this paper, an intuitive method is proposed to solve the difficult problem for the initialization of group tracking. In order to initialize the group tracks, the reports obtained must be separated as several groups at first. Then, each group in the first frame is associated with each group in the second frame. Finally the group velocity vector must be estimated. In order to obtain accurate estimates while not making the computation burden heavier, different algorithms must be selected according to the target number of the group in the first frame.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116005593","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 a multiple-model failure detection system for the F-16 in a full-scale nonlinear simulation F-16多模型故障检测系统全尺寸非线性仿真评估
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521988
P. Eide, P. Maybeck
{"title":"Evaluation of a multiple-model failure detection system for the F-16 in a full-scale nonlinear simulation","authors":"P. Eide, P. Maybeck","doi":"10.1109/NAECON.1995.521988","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521988","url":null,"abstract":"A multiple model adaptive estimation (MMAE) algorithm is implemented with the fully nonlinear six-degree-of-motion, simulation rapid-prototyping facility (SRF) VISTA F-16 software simulation tool. The algorithm is composed of a bank of Kalman filters modeled to match particular hypotheses of the real world. Each presumes a single failure in one of the flight-critical actuators, or sensors, and one presumes no failure. The algorithm is demonstrated to be capable of identifying flight-critical aircraft actuator and sensor failures at a low dynamic pressure (20,000 ft, .4 Mach). Research considers single hardover failures. Tuning methods for accommodating model mismatch, including addition of discrete dynamics pseudonoise and measurement pseudonoise, are discussed and demonstrated. Robustness to sensor failures provided by MMAE-based control is also demonstrated.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122470471","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: 3
Doppler centroid estimation for azimuth-offset SARS 方位偏移sar的多普勒质心估计
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521926
Ayob Sharif, Ian G. Cumming
{"title":"Doppler centroid estimation for azimuth-offset SARS","authors":"Ayob Sharif, Ian G. Cumming","doi":"10.1109/NAECON.1995.521926","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521926","url":null,"abstract":"Successful processing of Synthetic Aperture Radar (SAR) data requires that the Doppler centroid frequency be accurately estimated. A method for estimating the Doppler centroid for azimuth-offset SAR signals in the presence of noise and speckle is presented. For azimuth-offset SAR systems, changes in the Doppler centroid will cause distortions in the shape of the azimuth spectrum. As a result, the traditional correlation-based estimators will not provide accurate estimates. Doppler centroid estimation based on edge detection provides a practical alternative. The edge detector is tuned to detect a fairly wide, smooth, roof-like type of edge in the signal power spectrum. This method of estimation is evaluated with real data to measure its performance. The results are compared to those obtained by other estimation techniques based on spectrum fitting and energy balance. The accuracy of the edge detection technique over a 2048 azimuth cells by 16 range cells area is found to be 0.02 PRF rms. The edge detection principles can offer a convenient solution for Doppler estimation of range-offset and non-offset SAR signals as well.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"2005 33","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121010799","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: 6
Partition-based filters 而基于分区的过滤器
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521944
A. Sarhan, R. Hardie
{"title":"Partition-based filters","authors":"A. Sarhan, R. Hardie","doi":"10.1109/NAECON.1995.521944","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521944","url":null,"abstract":"In this paper we have introduced and analyzed a new class of adaptive nonlinear filters referred to as partition-based linear (Pl) filters. The operation of these filters is based on partitioning the R/sup N/ observation space defined by a size N moving observation window. Specifically, scaler quantization and vector quantization (VQ) have been used as useful examples to illustrate the concept of partitioning the observation space. Each partition is assigned a corresponding set of filter weights. Given that an observation vector lies in a certain partition, the filter uses the corresponding set of weights and forms an estimate by taking a linear combinations of the observation samples. Hence, the name partition-linear filters. Simulations include a novel approach to estimating response-to-response variations in evoked potentials (EP), buried in the on-going electroencephalogram (EEG).","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121084842","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: 3
Litton high-power Ka-band TWTs for airborne radars 用于机载雷达的利顿高功率ka波段行波管
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521932
A. Theiss, D. B. Lyon
{"title":"Litton high-power Ka-band TWTs for airborne radars","authors":"A. Theiss, D. B. Lyon","doi":"10.1109/NAECON.1995.521932","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521932","url":null,"abstract":"Litton EDD is developing a new class of Ka-band traveling-wave tubes (TWTs) that use a novel integral-polepiece folded-waveguide circuit to generate peak and average powers up to 1500 watts. Rugged and highly reliable, this new technology is especially suited for airborne radars. Ongoing developments to increase the average power, the bandwidth and the frequency may be useful for future designs.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121238072","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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