Multiprocessor control design for precision pointing systems
Robert L. Van Allen, W. Bruce DeShetler, Michael A. Kvasnack · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1995
The rapid development of digital processing raises the possibility for high speed control system architectures which are distributed in nature; that is, high speed special purpose processors tied together with a centralized overall executive. This processing architecture, while allowing more flexibility to the software programmer, introduces additional complexity into the control system design. For example, the separate digital blocks will be subject to 'slightly random' timing jitter which may degrade control loop performance and stability. This paper applies H(infinity ) analysis techniques to a multirate/asynchronous sampling digital control example to determine stability and control performance.