CompactBlock LDX Expansion Cable
1790-7CMCBL
1790-7CMCBL
在微分控制中,控制器的输出与输入误差信号的微分(即误差的变化率)成正比关系。
自动控制系统在克服误差的调节过程中可能会出现振荡甚至失稳。其原因是由于存在有较大惯性组件(环节)或有滞后组件,具有抑制误差的作用,其变化是落后于误差的变化。解决的办法是使抑制误差的作用的变化“前”,即在误差接近零时,抑制误差的作用就应该是零。这就是说,在控制器中仅引入 “比例”项往往是不够的,比例项的作用仅是放大误差的幅值,而目前需要增加的是“微分项”,它能预测误差变化的趋势,这样,具有比例+微分的控制器,就能够提前使抑制误差的控制作用等于零,甚至为负值,从而避免了被控量的严重调。所以对有较大惯性或滞后的被控对象,比例+微分(PD)控制器能改善系统在调节过程中的动态特性。
& 公司全称 : 厦门泰尼电气有限公司
& 销售代表 : 小黄
& 洽谈电话 :
&手机:
& 商务 QQ : 2917675397
& 传真(FAX): (请注明,01006收)
& 公司地址 : 厦门市海沧区海沧街道滨湖一里7号
& 公司网址 : www.xmtaini.com
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