Precision Segmented Reflector figure control system architectureA control system architecture for an actively controlled segmented reflector is described along with a design realization for achieving precision alignment of reflector panels. Performance requirements are derived in part from the Large Deployable Reflector, which is a representative mission, and error allocations are made which consider mirror panel surface errors, position measurement and figure estimation, and position control of both quasi-static and dynamic disturbances. The design uses multiple wavelength interferometric edge sensors and voice coil actuators in conjunction with a hybrid control strategy to correct panel position errors. A unit cell shown to be central to the concept is analyzed. The cell integrates the sensing, actuation, and mechanical functions of a control module together with a reflector panel to form a unitized assembly.
Document ID
19900043843
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mettler, E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Eldred, D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Briggs, C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kiceniuk, T. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)