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要学好《控制工程基础》这门课程,应分清主、次,要重点掌握下述三方面的内容。一、基本概念、术语1.1 系统、反馈、反馈控制、闭环(反馈)控制系统系统就是元素按一定规律的集合。将系统输出端的被控量的全部(单位反馈)或部分反施于输入端的信号,叫反馈量。由参考量(给定值)与反馈量比较产生偏差,由偏差产生控制作用去消除偏差,叫(闭环)反馈量控制;相应的系统为闭环(反馈)控制系统。1.2 开环系统、闭环系统系统按反馈情况分为(1)开环系统:没有外反馈回路的系统;(2)闭环系统:
To learn a good “control engineering foundation” this course, we should distinguish between the main and the second, we should focus on the following three aspects. First, the basic concepts, terms 1.1 system, feedback, feedback control, closed-loop (feedback) control system is a collection of elements according to certain rules. The system output of the controlled amount of all (unit feedback) or part of the anti-input signal, called the feedback amount. By the reference (reference value) and the feedback amount compared to produce deviation from the bias control to eliminate the deviation, called (closed-loop) feedback control; the corresponding system for the closed-loop (feedback) control system. 1.2 Open-loop system, closed-loop system According to the feedback system is divided into (1) open-loop system: no external feedback loop system; (2) closed-loop system: