Title :
Subspace-based multivariable identification and robust control of the MIT SERC interferometer testbed
Author :
Keviczky, Tamás ; Lantos, Béla
Author_Institution :
Dept. of Control Eng. & Inf. Technol., Budapest Univ. of Technol. & Econ., Hungary
Abstract :
The MOESP subspace-based identification method is applied to the MIT Space Engineering Research Center´s (SERC) interferometer testbed, a very lightly damped MIMO structure. A multivariable state space model is obtained based on input-output measurement data. The identified model is then compared to averaged frequency domain measurement data and to the results of a frequency domain identification technique. The identified MOESP model is used to design a robust controller for vibration control
Keywords :
Bode diagrams; MIMO systems; aerospace control; astronomical instruments; closed loop systems; control system synthesis; frequency-domain analysis; identification; light interferometers; optical control; robust control; space vehicles; state feedback; state-space methods; vibration control; Bode diagrams; MIT SERC interferometer testbed; MOESP model; averaged frequency domain measurement data; closed loop system; controller design; feedback; frequency domain identification; input-output measurement data; lightly damped MIMO structure; mu synthesis; multivariable identification; robust control; space based interferometer; state space model; subspace-based identification; tetrahedral truss; vibration control; Control system synthesis; Control systems; Frequency domain analysis; Optical interferometry; Robust control; Space missions; Space technology; State-space methods; System identification; Testing;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928781
