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

Steven E. Brooke

doi:10.1117/12.211438

8 June 1995 Design of a proximate time optimal servo for the JCMT chopping secondary

Steven E. Brooke

Proceedings Volume 2479, Telescope Control Systems; (1995) https://doi.org/10.1117/12.211438
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

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.

Citation Download Citation

Steven E. Brooke "Design of a proximate time optimal servo for the JCMT chopping secondary", Proc. SPIE 2479, Telescope Control Systems, (8 June 1995); https://doi.org/10.1117/12.211438

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