9907-014 2301A Woodward 控制系统

9907-014 2301A Woodward 控制系统

9907-014 2301A Woodward 控制系统

控制系统意味着通过它可以按照所希望的方式保持和改变机器、机构或其他设备内任何感兴趣或可变的量。控制系统同时是为了使被控制对象达到预定的理想状态而实施的。控制系统使被控制对象趋于某种需要的稳定状态。

为了实现自动控制的基本任务，必须对系统在控制过程中表现出来的行为提出要求。对控制系统的基本要求，通常是通过系统对特定输入信号的响应来满足的。例如，用单位阶跃信号的过渡过程及稳态的一些特征值来表示。在确保稳定性的前提下，要求系 统的动态性能和稳态性能好，即：

动态过程平稳（稳定性）；

响应动作要快（快速性）；

跟踪值要准确（准确性）。

9907-014 2301A Woodward 控制系统

A control system means by which any quantity of interest or variable within a machine, mechanism or other device can be maintained and changed in a desired manner. At the same time, the control system is implemented to make the controlled object reach the predetermined ideal state. The control system tends the controlled object to a certain desired stable state.

In order to realize the basic task of automatic control, it is necessary to put forward requirements for the behavior of the system in the control process. The basic requirements for a control system are usually met through the system's response to specific input signals. For example, it is expressed by the transition process of unit step signal and some eigenvalues of steady state. On the premise of ensuring stability, the dynamic and steady state performance of the system is required to be good, namely:

Dynamic process stability (stability);

The response should be fast (rapidity);

The tracking value should be accurate (accuracy).