论文部分内容阅读
PID控制广泛应用于各种参数的过程控制系统中,其微分作用旨在改善系统的暂态特性,以求得良好的过渡响应,而积分作用则旨在改善系统的静态特性,减小其稳态误差,然而,常规PID控制的实践经常遇到严重困难,首先,微分作用无法避免的缺点是对高频干扰特别敏感,甚至会导致系统的失控;积分作用的缺点则在于恶化了系统的瞬态特性,容易导致积分饱和,使系统出现超调过
PID control is widely used in various parameters of the process control system, its differential role aims to improve the transient characteristics of the system in order to obtain a good transition response, and the integral role is aimed at improving the static characteristics of the system to reduce its stability However, the practice of conventional PID control often encounters serious difficulties. Firstly, the unavoidable disadvantage of differential action is that it is particularly sensitive to high-frequency interference and can even lead to system out-of-control. The disadvantage of integral function is that it deteriorates the system’s momentary State characteristics, easily lead to integral saturation, the system overshoot