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在工业生产过程的实时控制中,PID控制是应用最广泛的一种控制规律。目前由计算机取代常规的 PID 调节装置而构成的直接数字控制系统(DDC)已得到广泛地应用。但是 DDC 系统和一般控制系统一样‘其调节品质也受到系统饱和的影响。本文提出了当数字 PID 控制系统中出现饱和现象时,加入缓冲滤波器来改善系统品质的设想,并提出了缓冲滤波器参数的两种计数方法。通过计算机仿真,确认了设想的有效性和计算方法的实用价值。
In the real-time control of industrial process, PID control is the most widely used control law. The direct digital control system (DDC), which is currently composed of a computer instead of a conventional PID regulator, has been widely used. But DDC system and general control system ’its adjustment quality is also affected by the saturation of the system. This paper proposes the idea of adding a buffer filter to improve system quality when saturation occurs in a digital PID control system and proposes two counting methods for the filter parameters. Through computer simulation, confirmed the validity of the idea and calculation method of practical value.