Micro-precision interferometer pointing control system

Author

O´Brien, John F. ; Neat, Gregory W.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

fYear

1995

fDate

28-29 Sep 1995

Firstpage

464

Lastpage

469

Abstract

The paper describes the development of the wavefront tilt (pointing) control system for the JPL micro-precision interferometer (MPI). This control system employs piezoelectric actuators and a digital imaging sensor with feedback compensation to reject errors in instrument pointing. Stringent performance goals require large feedback, however, several characteristics of the plant tend to restrict the available bandwidth. A robust 7th-order wavefront tilt control system was successfully implemented on the MPI instrument, providing sufficient disturbance rejection performance to satisfy the established interference fringe visibility requirement

Keywords

position control; JPL; digital imaging sensor; disturbance rejection; feedback compensation; interference fringe visibility; micro-precision interferometer; piezoelectric actuators; pointing control system; wavefront tilt control; Bandwidth; Control systems; Digital images; Error correction; Feedback; Image sensors; Instruments; Piezoelectric actuators; Sensor phenomena and characterization; Sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1995., Proceedings of the 4th IEEE Conference on

Conference_Location

Albany, NY

Print_ISBN

0-7803-2550-8

Type

conf

DOI

10.1109/CCA.1995.555747

Filename

555747