自校正控制在低温生物保存降温设备中的应用

本文介绍作者根据D.W.Clarke等提出的自校正控制器的思想,针对受控对象为一低温生物保存降温设备的具体情况,以TP-801单板微型计算机为主体所成功实现的对该设备降温及保温过程的自校正控制。文章除对控制装置的原理、硬件构成及软件编制作简要介绍外,还讨论了其中某些参数的选取及与系统调试有关的一些问题,并记述了在设备热容量变化、环境温度变化以及骤加扰动的情况下与PID数字式调节器的对比试验结果。

Application of Self-tuning Control to a Freezer for Biological Research of Low-temperature Preservation

In this paper, a controller based on the idea of self-tuning control put forward by Dr.D.W. Clarke has been constructed using TP-801 single-board microcomputer as the main component. The real condition of the object being controlled has been considered. Selftuning control of cooling and temperature maintaining process of a freezer for biological research has been successfully realized. The principle of the controller, its hardware designing and software programming are briefly introduced. Parameter-selecting and other problems connected with the adjustment of the controller are discussed.The contrast of a PID digital regulator vs. the self-tuning controller in experiments with changes of teat content of the freezer and ambient temperature and sudden disturbance imposed on the controlled object is presented.