Design of a proximate time optimal servo for the JCMT chopping secondary

Details Design of a proximate time optimal servo for the JCMT chopping secondary Design of a proximate time optimal servo for the JCMT chopping secondary

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2479..233b&link_type=abstract

Proc. SPIE Vol. 2479, p. 233-244, Telescope Control Systems, Patrick T. Wallace; Ed.

Computer Science

Scientific paper

A new controller has been developed for the JCMT chopping secondary mirror. The controller is based on the `proximate time-optimal servo' (PTOS) design. The PTOS controller incorporates both linear and nonlinear controller designs. The nonlinear portion offers minimal time response while the linear portion allows traditional compensator design techniques for higher order flexible modes in the plant. The PTOS controller was implemented with a floating point digital signal processor (DSP). Advantages of the PTOS design as described here include minimal time response, robustness, stability and the ability to accept `random' reference inputs.

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