A Fluidic Voice Communication System and Data Link.

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[文献类型]:科技报告
[标题]:A Fluidic Voice Communication System and Data Link.
[作者]:drzewiecki, tadeusz m.
[机构]:Naval Postgraduate School Monterey CA
[关键词]:voice communications,fluidic amplifiers,data links,signal processing,fluidic control,theses,fluidic voice communications,lpa(laminar proportional amplifiers),ntisdodxa
[出版年份]:1980
[报告时间]:Mar 80,
[页码]:262p
[馆藏索取号]:AD-A084924
[总页数]:263


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[唯一标识符]:CDSITC.AEROSPACE.A89-30792
[文献来源]:美国航空航天数据库(aerospace);国际航宇文摘(IAA)
[资源原始索取号]:A1989-30792; Reference AN: A89-30792
[标题]:Integrated direct optimization of structure/regulator/observer for large flexible spacecraft
[作者]:ONODA JUNJIRO; WATANABE NAOYUKI
[书名]:IN: AIAA, ASME, ASCE, AHS, and ASC, Structures, Structural Dynamics and Materials Conference, 30th, Mobile, AL, Apr. 3-5, 1989, Technical Papers. Part 3 (A89-30651 12-39). Washington, DC, American Institute of Aeronautics and Astronautics, 1989, p. 1336-
[文摘]:An numerical direct approach to design an optimal controller composed of regulator and observer has been proposed for integrated structure/controller optimization of flexible spacecraft. The approach takes account of uncontrolled residual modes. Therefore, it does not only optimize based on an actual performance index degraded by the residual modes but also suppresses the spillover instability. The approach has been applied to a simply supported beam examples first, and the characteristics of the resulting system have been investigated. The examples have demonstrated that the resulting controller is stable even when LQG controller is unstable. Insensitivity of the resulting system to parameter variations is also demonstrated compared with LQG controller. Subsequently, the approach has been incorporated in a structure/controller simultaneous optimization scheme. The practicality and effectiveness of the present scheme has been demonstrated in a beam-like flexible spacecraft example. (Author)
[关键词]:CONTROL SYSTEMS DESIGN; FLEXIBLE SPACECRAFT; LARGE SPACE STRUCTURES; OPTIMIZATION ; SPACECRAFT CONTROL; BEAMS SUPPORTS; CONTROLLERS ; EIGENVALUES ; LINEAR QUADRATIC GAUSSIAN CONTROL
[出版年份]:1989
[专业领域]:SPACECRAFT DESIGN, TESTING AND PERFORMANCE
[馆藏索取号]:A89-30792


[唯一标识符]:CDSITC.AEROSPACE.A68-37679
[文献来源]:美国航空航天数据库(aerospace);国际航宇文摘(IAA)
[资源原始索取号]:A68-37679
[标题]:Theory of fixed stratification in a gas discharge - Investigation of periodic solutions of a system of nonlinear plasma equations with the aid of an analog computer
[文摘]:( Theoretical analysis of fixed stratification, taking into account nonlinear effects and variation in charged particle concentration along plasma column)
[出版时间]:196806
[出版年份]:1968
[馆藏索取号]:A68-37679