Optimization of stochastic relay control systems by means of dimensional analysis
作者:
A. T. FULLER,
期刊:
International Journal of Control
(Taylor Available online 1982)
卷期:
Volume 35,
issue 4
页码: 575-604
ISSN:0020-7179
年代: 1982
DOI:10.1080/00207178208922641
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Optimal feedback control is investigated for a second-order plant with white noise disturbances and with bounded control. The white noises are state-dependent, and the system is such that dimensional analysis can be applied with advantage. The optimal controller is found to be represented by a switching curve which is determined analytically to within a single parameter. To find the value of this parameter, the Bellman-Florentin partial differential equation of optimal stochastic control is converted to an ordinary differential equation by means of dimensional analysis; and a resulting two-point boundary-value problem is solved numerically. It is found that the optimal switching curve can deviate considerably from the corresponding curve for a deterministic system. It is also found that the stochastic system becomes unstable if the intensities of the white noises are increased sufficiently.
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