在随机干扰影响下两种极值調节系统的分析
ANALYSIS OF OPTIMALIZING CONTROL SYSTEMS UNDER RANDOM INTERFERENCES
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摘要: 本文利用近似法求出两种极值调节系统在随机干扰影响下搜索损耗的数学期望,因而可以在具体条件下比较两种调节器的优缺点.在正态平稳随机干扰下,相关搜索法对较强的输入端干扰是适宜的;反之,在较弱的输入端干扰时,一般步进搜索法比较有利.计算结果也给出了在各种干扰强度下步进法的最佳步长及相关法的最佳搜索信号振幅.这些都是调节器的重要参数.Abstract: Two types of optimalizing control systems are analyzed and compared under random interferences.By means of approximation,the expectation values of hunting loss are calculated. In the case of Guassion stationary random interferences,when the interference at the input terminal is stronger than that at the output terminal,the hunting loss of the correlation type optimalizing system is smaller;but when the interference at the input terminal is weaker than that at the output terminal,the hunting loss of the gradient type optimalizing system is smaller.These results can be used as a guide to choose the searching method in vatious interference levels.
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