自控原理课件(英文版)分析.ppt

water level control system water level automatic control system 1. According to the form of given signal Regulator Systems versus Servo Systems (恒值系统和随动系统） 2. According to whether the system is satisfied the superposition principle Linear Systems versus Nonlinear System A linear system satisfies the properties of superposition and Homogeneity: (Principle of Superposition). 3. According to whether the system’s parameters are changed with time Time-Invariant Systems versus Time-varying System 4. According to the form of the signal Continuous Systems versus Discrete Systems 5. According to the number of I/O SISO Systems versus MIMO Systems 6. According to the structure of the system Open-loop system, closed-loop system (feedback control systems), Compound Control systems 空间军备竞赛催生了现代控制理论 summary 1. General Concept of Automation Basic Control Method Basic Composition of Control Systems Classification of Control Systems Requirements on Control Systems The Content of the Course 2. Important Knowledge Points The characteristics and principle of negative-feedback control system Plotting the block diagram using the working principle diagram of system homework terms 5. 被控量(controlled variable) 被控制的物理量； 6. 输出（Output） The response obtained from a system （通常与被控量一致。） 7.干扰(disturbance) 所有使被控量偏离期望值的因素 8. 反馈（Feedback） - The output of a system that is returned to modify the input. 1-4 types and Basic components of control systems. Turntable speed control Tachometer dc amplifier Turntable dc motor battery Speed setting Amplifier dc motor Turntable Actual speed Desired Speed (voltage) Tachometer 1-4 types and Basic components of control systems. amplifier Motor Gearing Valve Actuator Water container Process controller Float measurement (Sensor) Error Feedback signal resistance comparator Desired water level Input Actual water level Output The water level control system