Optimal digital control of multirate systemsMany digitally controlled aerospace systems have widely separated time constants and thus can benefit from the use of two or more sample rates. In this paper, the analysis and synthesis of multirate systems is accomplished by creating an equivalent single rate system and applying existing techniques. The optimal steady state solution of the single rate system is obtained by eigenvector decomposition and then used to compute the periodic solution to the Riccati equation of the original multirate system. An example shows when multirate analysis is necessary and the penalty of various levels of approximations to the exact multirate solution.
Document ID
19810059725
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Amit, N. (Raphael Armament Development Authority Haifa, Israel)
Powell, J. D. (Stanford University Stanford, CA, United States)