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一、前言近年来,随着数字计算机的迅速发展,使用数字计算机的数控系统开始得到广泛应用,目前在飞机上,从自动飞行控制装置到大气计算机、数字显示装置等也都采用了数字计算机。一般改善控制系统就是为了提高控制性能,所以要给控制系统附加控制器或补偿回路。该控制器若由数字运算元件组成,则它与传统的模拟方法相比,由于容易进行各种程序设计,因此能够进行非线性补偿,并且有补偿范围宽的优点。为了得到由数字计算机构成数控系统的基础资料,本文选择了二阶伺服系统为控制对象,并研究适合以下三种方法的数字控制器的特性。
I. Introduction In recent years, with the rapid development of digital computers, numerical control systems using digital computers are beginning to be widely used. Currently, digital computers are also used in aircraft, from automatic flight control devices to atmospheric computers and digital display devices. General improvement of the control system is to improve the control performance, so to the control system additional controller or compensation loop. If the controller is composed of digital computing elements, compared with the traditional simulation method, it is able to perform non-linear compensation as compared with the conventional simulation method, and has the advantages of wide compensation range. In order to get the basic data of numerical control system composed of digital computer, this paper chooses the second-order servo system as the control object and studies the characteristics of the digital controller suitable for the following three methods.