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关于PID调节器的三个参数(比例、积分、微分参数)的自校正问题,国内外有些学者发表了一些文章,但其方法大都是依据对被调系统进行辩识、继而对三个参数分别进行自调整。尽管这种方法使用起来比较麻烦,但对一些过程特性比较明确的系统还是可行的;而对那些相当复杂且其动特性几乎难以用数学方法描述的被调系统,这种方法就失去了作用。针对一类不确定系统,本文提出了一种调节器参数自校正的方法—Fuzzy(模糊)在线自校正方法。对一阶纯滞后系统进行的仿真表明,这种方法是可行的。
Some self-correcting problems about PID regulator’s three parameters (proportional, integral and differential parameters) have been published by some scholars at home and abroad. However, most of the methods are based on the identification of the system to be adjusted and then the three parameters Self-adjusting. Although this method is troublesome to use, it is still feasible to have some systems with definite process characteristics. However, this method is ineffective for those complicated systems whose modulated dynamic properties are hardly described mathematically. For a class of uncertain systems, this paper presents a method of self-tuning regulator parameters-Fuzzy (online) self-tuning method. The simulation of the first-order purely lagged system shows that this method is feasible.