采用回环算法的计算机温度控制系统

THE MICROCOMPUTER CONTROL SYSTEM OF TEMPERATURE WITH RETURN RING OPERATION

本文提出一种新型的温度控制算法——回环算法。这种算法采用回环控制特性,根据温度的一阶偏差e(k)和二阶偏差(?)e(k)选择相应的控制算式,由偏差计算控制量u(k)。这种回环算法是针对炉子温度回路具有纯滞后和大惯性这样一种对象特性而设计的。因此,这种算法能有效地克服对象的纯滞后和大惯性对控制系统的不利影响,从而保证系统的动态性能好,静态精度高。本系统的运行结果表明,这种控制算法不仅算式简单,容易理解和掌握,而且参数调整方便,系统调试时间短。因此,本控制算法是一种较好的实用算法,具有一定的推广价值,可广泛应用于具有纯滞后和大惯性的其它系统。

The paper advances a new temperature control operation--return ring operation. In this operation, return ring control characteristics are adoped, and according to one step devia-tion e(k) and two step deviation △e(k), the relevant control algorithm is chosen and the control mea-sure is counted with deviation. The return ring operation is designed based on the fact that there exist delay and inertia in thetemperature return ring of the stove. So it will efficiently surmount the unfavourable influence causedby the delay and inertia of the target. Thus good system performance and high static precision are to beachieved.