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MVI56E-MNET
MVI56E-MNET
根据自动化控制系统控制方式的不同,可将其分为开环、闭环以及复合控制系统三类。开环控制的输入量不会受到输出量的影响,该系统不需要监测和反馈输出量的信息,属于单向控制,例如红绿灯、风扇等;闭环控制需要利用输出量所反馈的信息与输入量进行对比,然后根据两者之间所产生的差别来对系统进行控制,控制过程形成了闭合的流程,例如车床、洗衣机等;复合控制是将开环、闭环控制两种系统相结合,该系统综合了两种系统的优势,因此能够使控制系统的控制性能更加良好。
其次,根据自动化控制系统所给定的输入值不同,可将其分为恒值控制系统、随动控制系统两类。恒值控制系统要求输出量在误差范围内等于或者接近预先设定的值,比如说在生产过程中所需要的温度值、压力值、液体流速、机器转速等;随动控制系统是指输入值会根据某一未知时间或者特定时间的函数进行变化,而输出量需要跟随输入量的变化而变化,例如雷达系统、液体混合加热灯。
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HONEYWELL 38500148-300 Hub Pwr Supply 38500148300
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