Title :
Experiments on active optical and structural control
Author :
Rahman, Zahidul H. ; Spanos, John T. ; Fanson, James L.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A nanometer-level optical path-length control experiment for a large baseline space interferometer has been implemented on the JPL Phase B testbed. The experiment consisted of a multilayer control of active structural control to augment structural damping and active path-length control to directly compensate for optical path-length variation. The approach has been successful in maintaining the optical path-length variation within 3 nm root-mean-square (RMS) under the laboratory ambient disturbance
Keywords :
adaptive control; aerospace control; astronomical instruments; compensation; damping; light interferometers; optical variables control; physical instrumentation control; vibration control; active structural control; dial-a-strut controller; feedback control; flexible truss structure; impedance matching; large baseline space interferometer; multilayer control; nanometer-level; optical motion compensation; optical path-length control; spaceborne optical interferometer; structural damping; Control systems; Damping; Laboratories; Mirrors; Nonhomogeneous media; Optical control; Optical feedback; Optical interferometry; Propulsion; Testing; Vibration control;
Conference_Titel :
Decision and Control, 1992., Proceedings of the 31st IEEE Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0872-7
DOI :
10.1109/CDC.1992.371114
