控制系统简介英文版

1、 Introduction to Control Systems(控制系统的简介)01 Introduction and Classification of Control Systems02 Closed-Loop Control and Open-Loop Control 03 The Analysis of the Ad and DisadCONTENTS Introduction and Classification of Control Systemsl Definition Automatic control Without peoples direct participation

2、Additional facilities (controllers)Run automatically by rule (照规则)l MeaningLabor liberation(解放) of human being Improve production efficiencyDrive the development of science and technology Introduction and Classification of Control SystemslClassification of Control SystemsControl systems(by the flowi

3、ng direction of signal)Open-loop control systems Closed-loop control systems Compound control systems (ellipsis)lpss,n:省略By disturbance（按扰动）By the given（按给定）kmpand adj:符合的，混合的 Closed-Loop Control and Open-Loop Control lOpen-loop control systemsFig.1 controlled by the givenFig.2 controlled by the giv

4、enCharacteristics : I.Unidirectional transmission (单向传输) II.The output has no effect on the input in turnactuator ktjet n:自 执行机构plant plnt n:设备，对象（controlled plants 受控对象）lClosed-loop control systemsFig.3 controlled by the givenCharacteristics : I.The flowing of signal constitutes the circuit II.Diff

5、erence controls differenceIII. Accuracy determined by the accuracy of the given and measurementknsttjut vt:构成，组成 df()r()ns n:偏差 Closed-Loop Control and Open-Loop Control The Analysis of the Ad and DisadlOpen-loop control systems Advantages :I.Simple construction and ease of maintenanceII.Convenient

6、and cheaperIII. No stability problem Disadvantages :I.Poor ability of anti-disturbanceII.Repeat recalibrationriklibren n:再校准Used where no disturbances exist or the needed accuracy is not good .Such as water level control , vending machines. The Analysis of the Ad and Disadl Closed-loop control systems Advantages :I.Self-adjust for disturbancesII.Nice ability to resist disturbancesIII. High accuracy Disadvantages :I.Complex construction and higher costII.Difficult to analyze and design control systemsIII. A major pro