自动控制原理Principle of Automatic Contron 思维导图

U9106782758

2025-08-22

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线性系统的频域分析

动态性能

超调量

自动控制原理Principle of Automatic Contron 内容详述

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自动控制系统Automatic Control System

自动控制系统的组成：是由被控对象和自动控制装置按一定方式联结起来的，以完成某种自动控制任务的有机整体。Composition of an Automatic Control System: It is an organic whole formed by connecting the controlled plant and the automatic control device in a specific manner to accomplish certain automatic control tasks.

自动控制系统的分类：开环控制、闭环控制、复合控制Classification of Automatic Control Systems: Open-Loop Control, Closed-Loop Control, Compound Control

要求：稳定性、快速性、准确性Requirements: stability, speed, accuracy

线性系统的时域分析Time Domain Analysis of Linear System

线性系统时间响应的性能指标Performance Indicators of Time Response for Linear Systems

动态性能 dynamic performance

上升时间：从终值的10%上升到终值的90%的时间 Rise time: time used for rising from 10% of the ﬁﬁnal value to 90% of the ﬁﬁnal value

峰值时间：第一次到达峰值的时间 Peak time: time signal peaking ﬁﬁrst time

超调量：最大峰值偏离稳态值的部分

一阶系统的时域分析：向一阶线性系统输入不同信号，并分析其输出响应 Time domain analysis of ﬁﬁrst-order systems: input diﬀﬀerent signals to ﬁﬁrst-order system then analyzing output

输入信号：阶跃信号，脉冲信号 Input signal: step signal, impulse signal

一阶系统：运动方程是一阶微分方程的系统 First-order system: motion equation of which is ﬁﬁrst-order diﬀﬀerential equation

线性系统的频域分析Frequency Domain Analysis of Linear System

典型环节的频率特性：反映典型环节如等的系统响应和正弦输入信号之间的关系，用图解法进行研究 Frequency characteristics of typical link: reﬂﬂect the relationship between response and the sine wave, use graphic method to analyze

典型环节：比例环节、惯性环节Typical link: proportional link, inertia link

幅相曲线：当传递函数中的频率从0增加到正无穷时向量失端描绘出的曲线 Amplitude-phase curve: curve depicted by extremity of vector when the frequency in the transfer function rising from 0 to positive inﬁﬁnity

传递函数：系统的输入输出拉氏变换之比Transfer function: ratio of Laplace transform of input and output of system

根轨迹法 Root-Locus Method

不直接求解特征方程，用作图的方法就能分析当某参数变化时闭环控制系统的稳定性 Without solving the characteristic equation, the stability of the closed-loop control system can be analyzed by charting when a parameter changes.

根轨迹：当系统开环传递函数中某一参数从0→无穷时，闭环系统特征根在s 平面上的变化轨迹Root Locus: The trajectory of the characteristic roots of a closed-loop system on the s-plane as a specific parameter in the open-loop transfer function varies from 0 to infinity.

随机森林回归工作原理思维导图