NDLI: Hierarchical HAC/sub /spl infin///LAC vibration suppression for a flexible space telescope: SPICE

Content Provider	IEEE Xplore Digital Library
Author	Rodriguez, A.A. Carter, D.R.
Copyright Year	1994
Description	Author affiliation: Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA (Rodriguez, A.A.)
Abstract	This paper describes the synthesis of a dynamic compensator for a flexible space telescope described by a 280/sup th/ order finite-element NASTRAN-based model. The control objective is to attenuate the induced LOS jitter by a factor of 40 dB over the open loop value. A combination of low authority control (LAC) followed by high authority control (HAC/sub /spl infin//) which utilizes the H/sup /spl infin// optimal control methodology make up the hierarchical control system developed in this paper. The final design is shown to offer the required performance and robustness. The LAC loop is made up of two loops which provide broadband modal damping, modal spillover robustness, and actuator mode stabilization; all of which help in the design of the HAC/sub /spl infin//. The HAC/sub /spl infin// loop controller order is reduced from 130-states to 60-states by applying frequency-weighted balanced truncation techniques. The resulting hierarchical HAC/sub /spl infin///LAC controller is robustly stable against /spl plusmn/10% variation in actuator and sensor modeling.
Starting Page	686
Ending Page	690
File Size	577859
Page Count	5
File Format	PDF
ISBN	0780317831
DOI	10.1109/ACC.1994.751827
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-06-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Open loop systems Optimal control Control systems Los Angeles Council Robustness Actuators Telescopes Finite element methods Jitter Damping
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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