Download Automatic Control in Aerospace 1989. Selected Papers from by T. Nishimura PDF

By T. Nishimura

The papers provided on the Symposium coated the components in aerospace expertise the place automated regulate performs a necessary function. those integrated navigation and assistance, house robotics, flight administration platforms and satellite tv for pc orbital keep watch over structures. the data supplied displays the hot advancements and technical advances within the software of computerized regulate in house know-how

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Read or Download Automatic Control in Aerospace 1989. Selected Papers from the IFAC Symposium, Tsukuba, Japan, 17–21 July 1989 PDF

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Additional resources for Automatic Control in Aerospace 1989. Selected Papers from the IFAC Symposium, Tsukuba, Japan, 17–21 July 1989

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GLOBECOM' C o p y r i g h t © I F A C A u t o m a t i c C o n t r o l in A e r o s p a c e , T s u l c u b a , J a p a n , 1989 THE THEORETICAL AND EXPERIMENTAL VALIDATION OF THE GPS~INS-STAR HYBRID NAVIGATION SYSTEM CONCEPT M. Harigae* and T. Tanabe** '^Toshiba Corporation, Space Programs Division, Komukai Works, Komukai, Toshiba-cho, Saiwai-ku, Kawasaki 210, Japan University of Tokyo, Department of Aeronautics, Faculty of Engineering, Hongo 7, Bunkyo-ku, Tokyo 113, Japan A b s t r a c t . The t h e o r e t i c a l a n d e x p e r i m e n t a l v a l i d a t i o n o f t h e G P S - I N S - S T A R h y b r i d n a v i g a t i o n s y s t e m is p e r f o r m e d .

When 1 pulse ( width:8 msec ) is supplied, after 8 msec the holding torque doesn' t generate and the rotor is settled by only detente torque. Because the detente torque is widely smaller than the hold­ ing torque, the rotor isn't overshot much and settles easily. HARMONIC DRIVE The natural frequency and modal damping coeffi­ cient are obtained by modal survey test using im­ pact hammering method. Data acquisition and processing is: (1) The input force and response ac­ celeration are measured. (2) The transfer function between input and response is calculated.

GPS ANTE F i g . 2 C o n f i g u r a t i o n o f t h e GPS-INS-STAR E x p e r i ­ ment S y s t e m T h e e x t e n d e d Kalman f i l t e r i n t e g r a t e s t h e s e n s o r i n f o r m a t i o n s a c c o r d i n g t o t h e l i n e a r optimum e s ­ timation theory. It constructs feedback loops to t h e GPS, t h e INS a n d t h e STAR s e n s o r w h i c h a r e n o t s e e n in a n y s t a n d - a l o n e s y s t e m . In t h e e x p e r i ­ ment, t h e 3 2 - b l t m i c r o c o m p u t e r p e r f o r m s t h e s e p r o c e s s e s .

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