Three-degree-of-freedom joint H2/H∞optima) controllers
作者:
ALESSANDRO CASAVOLA,
期刊:
International Journal of Systems Science
(Taylor Available online 1993)
卷期:
Volume 24,
issue 9
页码: 1803-1813
ISSN:0020-7721
年代: 1993
DOI:10.1080/00207729308949595
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The solution is dealt with of the discrete-time LQ stochastic tracking and servo problems for a general system configuration. It is shown that the resultant solution is in the form of a three-degree-of-freedom (3DOF) controller when the vector of the exogenous signal is extended to include accessible disturbances. In particular, it is shown that a separation property between feedback, reference and accessible disturbance feedforward actions, proved for 2DOF optimal LQ stochastic control scheme, also holds true for the general system configuration here considered. Further, this separation property can be suitably extended, when a linear control law is assumed, to the minimax LQ stochastic tracking and servo problems
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