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Design and implementation of ternary exoatmospheric autopilot system 三元大气外自动驾驶系统的设计与实现
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111262
Lim Choi, J. Bailey
{"title":"Design and implementation of ternary exoatmospheric autopilot system","authors":"Lim Choi, J. Bailey","doi":"10.1109/DASC.1990.111262","DOIUrl":"https://doi.org/10.1109/DASC.1990.111262","url":null,"abstract":"A ternary-microprocessor-based exoatmospheric autopilot system including a ternary valve servo system is designed in which the ternary processor and ternary hardware cover all navigational calculations and preprogrammed missions. The exoatmospheric autopilot system was designed completely with the symmetrical ternary (-1, 0, and +1) logic scheme. This system gives effective torque combinations into the reaction jet servo system. The functional operations of this ternary autopilot system are shown to be better than those of a binary-processor-based autopilot system. This ternary autopilot system can be reduced to few small blocks using CMOS circuits and VLSI techniques for an effective vehicle system.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115637687","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
Spaceborne mass storage device with fault-tolerant memories 具有容错存储器的星载大容量存储设备
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111261
T. P. Haraszti, R.P. Mento, N. Moyer
{"title":"Spaceborne mass storage device with fault-tolerant memories","authors":"T. P. Haraszti, R.P. Mento, N. Moyer","doi":"10.1109/DASC.1990.111261","DOIUrl":"https://doi.org/10.1109/DASC.1990.111261","url":null,"abstract":"The development of fault-tolerant radiation-hardened CMOS memories for gigabit mass storage devices, is discussed, and the feasibility of these innovative memories to satisfy all requirements of application in advanced spaceborne and airborne computing systems is demonstrated. Novel orthogonal shuffle circuits, error correction by weighted codes, associative repair, and hierarchical architecture are proposed for spaceborne mass storage devices. Tests on experimental 10-Mbit and 40-Mbit monolithic CMOS static memories demonstrated read and write data rates of 120 MHz, module access time of 25 nsec, power dissipation of 880 mW, and radiation hardness of 1 Mrd(Si) with projected mean time between failures of 500 kh. On the wafer, 256-kbit chips are organized in a serial-parallel memory configuration. Battery back-up provides a data retention time of ten years. The experimental memory devices were fabricated with low-cost unhardened CMOS bulk VLSI processing technology. A very large increase in density and radiation hardness through the use of advanced radiation-hardened processing technologies is predicted.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124991526","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
Automatic throttle control for business and commuter aircraft 用于商务和通勤飞机的自动油门控制
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111287
D. Bader
{"title":"Automatic throttle control for business and commuter aircraft","authors":"D. Bader","doi":"10.1109/DASC.1990.111287","DOIUrl":"https://doi.org/10.1109/DASC.1990.111287","url":null,"abstract":"Honeywell has developed a digital autothrottle system for application on the Gulfstream IV business jet. This is the first true full-authority digital autothrottle designed specifically for the business and commuter market. A system description of the Gulfstream IV autothrottle is presented, and attention is given to modes and functions, design tradeoffs, and resulting performance. The autothrottle's modes are: takeoff, go around, flight level change, and speed hold. The primary design tradeoff during development was throttle activity versus control accuracy and dynamic response. The Honeywell design includes several techniques to yield the required accuracy with smooth response and minimal throttle activity. The result is an autothrottle system appropriate for business jets (where passenger comfort is very important). Some of the special considerations involved in designing a digital autothrottle system for use with FADEC (full authority digital engine controls)-controlled engines are discussed.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125118655","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
Global Positioning System integrity channel: a system design analysis 全球定位系统完整性通道:一个系统设计分析
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111352
B. Stein, W. Tsang
{"title":"Global Positioning System integrity channel: a system design analysis","authors":"B. Stein, W. Tsang","doi":"10.1109/DASC.1990.111352","DOIUrl":"https://doi.org/10.1109/DASC.1990.111352","url":null,"abstract":"A system design analysis of the GPS integrity channel (GIC), which distributes integrity information to civil aviators equipped with GIC avionics, is presented. The GIC system encompasses ground stations monitoring the integrity of GPS signals-in-space. The information is centrally processed by a master upload station (MUS) where GPS integrity information is generated. A GIC data link is established to carry the GIC information. Reception and processing of the integrity message are performed by the GIC avionics. A proposed GIC system design is analyzed. The study covers a point-to-point communication link starting with the data collection process at the monitoring stations and ending with the integrity message extraction by the GIC avionics. The design uses a star network topology for connecting the ground monitor stations to the MUS with triple redundant transmissions to ensure reliability. Timing analysis has been performed to ensure the feasibility of the design, and it was demonstrated that the proposed system could meet the imposed time-to-alarm limit for different flight phases.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116811991","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
Programmable digital communications receiver architecture for high data rate avionics and ground applications 用于高数据速率航空电子和地面应用的可编程数字通信接收机结构
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111348
J. Luecke, M. Jordan
{"title":"Programmable digital communications receiver architecture for high data rate avionics and ground applications","authors":"J. Luecke, M. Jordan","doi":"10.1109/DASC.1990.111348","DOIUrl":"https://doi.org/10.1109/DASC.1990.111348","url":null,"abstract":"The architecture for an advanced, modular, all-digital programmable receiver capable of processing bandwidth-efficient digital modulation schemes at data rates well in excess of 100 Mb/s is described. The receiver is designed around a digital, parallel processing architecture to support high throughput rates while being adaptable to both continuous and burst communication systems. Based on the combined use of GaAs and CMOS technologies, a digital architecture that provides significant processing flexibility is presented. The programming of all critical receiver functions and attributes is supported through this architecture. The general concept is based on a set of high-speed programmable and reconfigurable building blocks that provide the user complete control of the demodulation, tracking, and data-processing functions.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126667303","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
DEPEND: a design environment for prediction and evaluation of system dependability DEPEND:用于预测和评估系统可靠性的设计环境
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111267
K. Goswami, R. K. Iyer
{"title":"DEPEND: a design environment for prediction and evaluation of system dependability","authors":"K. Goswami, R. K. Iyer","doi":"10.1109/DASC.1990.111267","DOIUrl":"https://doi.org/10.1109/DASC.1990.111267","url":null,"abstract":"The development of DEPEND, an integrated simulation environment for the design and dependability analysis of fault-tolerant systems, is described. DEPEND models both hardware and software components at a functional level, and allows automatic failure injection to assess system performance and reliability. It relieves the user of the work needed to inject failures, maintain statistics, and output reports. The automatic failure injection scheme is geared toward evaluating a system under high stress (workload) conditions. The failures that are injected can affect both hardware and software components. To illustrate the capability of the simulator, a distributed system which employs a prediction-based, dynamic load-balancing heuristic is evaluated. Experiments were conducted to determine the impact of failures on system performance and to identify the failures to which the system is especially susceptible.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126683050","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: 31
Advanced crew station integration cockpit 先进的乘员站集成座舱
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1117/12.164702
P. Pencikowski
{"title":"Advanced crew station integration cockpit","authors":"P. Pencikowski","doi":"10.1117/12.164702","DOIUrl":"https://doi.org/10.1117/12.164702","url":null,"abstract":"The advanced crew station integration cockpit (ACIC), which introduces an avionics suite comprising state-of-the-art, flight-qualified display hardware in conjunction with a comprehensive aerodynamic, sensor, threat, and weapons simulation capability, is described. The system is capable of displaying raster and calligraphic data in orthographic and perspective views. The controls are reprogrammable, relocatable, and reconfigurable in their size, type of action, and graphical attributes. The system easily interfaces to generic simulation systems. The ability to design and simulate head-up displays is also incorporated. The next-generation design tool ensures the utility of new cockpit designs by allowing head-to-head competition of proposed vendor hardware and supports the evaluation of all crew station, sensor fusion, and artificial-intelligence development programs. This stand-alone system operating in real-time is unique in its ability to perform high-fidelity simulation at low cost.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123525812","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
A design algorithm using Z-plane closed loop pole placement 一种采用z平面闭环极点布置的设计算法
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111263
J. A. Gatlin
{"title":"A design algorithm using Z-plane closed loop pole placement","authors":"J. A. Gatlin","doi":"10.1109/DASC.1990.111263","DOIUrl":"https://doi.org/10.1109/DASC.1990.111263","url":null,"abstract":"It is argued that the design of a single input single output (SISO) control system is simplified if the designer has direct control over the closed loop poles. A space-laser-communications design example utilizing a two-transform algorithm that constructs a generic discrete compensator is presented. The plant in the example has an anti-aliasing filter, a double integrator, a torquer time constant, and a sample-and-hold as continuous elements, and a discrete proportional plus integral module. This fifth-order system is representative of many instrument pointing control systems. Poles resulting from the compensator are placed near the origin of the Z-plane so that the response is dominated by the closed loop poles from the plant. Root locus, time response, and frequency response data are given. Normalization by the sample interval is used to provide a dimensionless example.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121956448","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
System testability analyses in the Space Station Freedom program 空间站自由计划系统可测试性分析
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111256
B. Kelley, E. D'Urso, R. Reyes, T. Treffner
{"title":"System testability analyses in the Space Station Freedom program","authors":"B. Kelley, E. D'Urso, R. Reyes, T. Treffner","doi":"10.1109/DASC.1990.111256","DOIUrl":"https://doi.org/10.1109/DASC.1990.111256","url":null,"abstract":"A testability analysis of the integrated Space Station Systems preliminary design was performed using the Harris Corporation's System Testability Analyzer (HSTA), a computer-based system testability analysis tool. The results of this analysis are useful for providing preliminary indicators of the station-level testability and identifying potential fault detection and/or isolation shortfalls inherent in the design. A review of the concepts and approaches available for testability analysis is given, and the specifics of the Space Station Freedom integrated-systems testability analysis follow. A summary and conclusions derived are detailed.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130116386","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
Society of Automotive Engineers AS4074 family high-speed, fault-tolerant data communications standards for integrated avionics 汽车工程师协会AS4074系列高速，容错数据通信标准，集成航空电子设备
9th IEEE/AIAA/NASA Conference on Digital Avionics Systems Pub Date : 1990-10-15 DOI: 10.1109/DASC.1990.111362
J. W. Meyer
{"title":"Society of Automotive Engineers AS4074 family high-speed, fault-tolerant data communications standards for integrated avionics","authors":"J. W. Meyer","doi":"10.1109/DASC.1990.111362","DOIUrl":"https://doi.org/10.1109/DASC.1990.111362","url":null,"abstract":"The Society of Automotive Engineers (SAE) has been addressing the need for data buses in advanced avionics systems. Since 1979, the SAE has had task groups developing a family of commercial data bus standards designed specifically for the unique fault-tolerant requirements of avionics applications: AS4074.1 linear, token-passing multiplex data bus (LTPB) and AS4074.2 high-speed ring bus (HSRB). The author explains the background of the two bus standards, gives a brief overview of the two protocols, and reviews current and future SAE activities in the avionics data bus field. It is concluded that the SAE LTPB and HSRB satisfy the data latency needs of emerging avionics architectures, as well as the reliability and fault tolerance requirements. Because of their ability to be supplemented with higher data rate versions, they will continue to support emerging avionics architectures.<<ETX>>","PeriodicalId":141205,"journal":{"name":"9th IEEE/AIAA/NASA Conference on Digital Avionics Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130477161","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
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