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Establishment of Quality,Reliability and Design Standards for Low,Medium,and High Power Microwave Hybrid Microcircuits.

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[文献类型]:科技报告
[标题]:Establishment of Quality,Reliability and Design Standards for Low,Medium,and High Power Microwave Hybrid Microcircuits.
[作者]:robinson, e. a.
[机构]:Texas Instruments,Inc.,Dallas. Equipment Group.
[关键词]:equipment specifications,microelectronics,microwave circuits,capacitors,circuit reliability,quality control,thin films,transistors,nasa
[出版年份]:1973
[报告号]:NASA-CR-124211, U1-842630-F
[报告时间]:Feb 73,
[页码]:145p
[馆藏索取号]:N7322419
[总页数]:155


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[唯一标识符]:CDSTIC.ISTP.1375497
[文献来源]:科学技术会议录索引(ISTP)
[文献类型]:科技会议
[标题]:Ultrafast Electron Transfers in Aqueous-Electrolyte Solutions
[作者]:Y Gauduel;M Sander;H Gelabert
[出版单位]:Elsevier Science BVAmsterdam
[ISSN_ISBN]:0167-7322
[会议名称]:25th International Conference on Solution Chemistry,Vichy, France,August 26-31, 1997
[来源]:JOURNAL OF MOLECULAR LIQUIDS,pp 111-122
[地址]:Y Gauduel,Ecole_Polytech, Ens, CNRS Ura 1406, Inserm U451, Lab Opt Appliquee, F-91761 Palaiseau, France
[专业领域]:Physics, Atomic, Molecular & Chemical
[唯一标识符]:CDSITC.AEROSPACE.N92-12266
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:N1992-12266; Reference AN: N92-12266
[标题]:Integration of model-based and sensor-based control for a two-link flexible robot arm
[作者]:FEDDEMA J T; EISLER G R; SEGALMAN D J
[文摘]:This paper analyzes the experimental results of model-based and sensor-based control strategies for a two-link flexible, planar, robot arm. An off-line optimization determines a minimum time, straight line tip trajectory which stays within the torque constraints of the motors and ends in a quiescent state, i.e., no vibrational transients. An efficient finite-element model is used in the optimization to approximate the flexible arm dynamics. Control schemes tested include an open loop torque profile, a closed loop Proportional-Derivative (PD) joint controller, and a feedforward controller. This last scheme uses the torque profile created from the optimization, along with PD feedback of the joint angles and proportional feedback of the strain gages, to correct for errors in the model. The results show that the best performance is achieved with this feedforward approach. (DOE)
[关键词]:FEEDBACK CONTROL; MODEL REFERENCE ADAPTIVE CONTROL; ROBOT ARMS; ROBOT CONTROL; ALGORITHMS ; CONTROLLERS ; DYNAMIC CONTROL; OPTIMIZATION
[出版年份]:1990
[专业领域]:MECHANICAL ENGINEERING

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