关键字:阀门定位器 http://www.samson-china.com/ 阀门定位器是一款具有PID控制算法的多功能智能设备,具备比例调节规律、积分调节规律以及积分调节规律的作用。 1、比例调节规律 表示阀门定位器一出现偏差就能及时调节,但调节作用同偏差量是成比例的,调节终了会产生静态偏差(简称静差)。Kp增大有利于减小静差,但Kp增加太大,将导致系统超调增加,稳定性变坏,甚至使系统产生振荡。 2、积分调节规律 只要有偏差,阀门定位器就有调节作用,直到偏差为零,因此能消除偏差。但积分作用过强,又会使调节作用过强,引起被调参数超调,甚至产生振荡。 3、微分调节规律 阀门定位器根据偏差的变化速度进行调节,因此能提前给出较大的调节作用,大大减小了系统的动态偏差量及调节过程时间。但微分作用过强,又会使调节作用过强,引起系统超调和振荡。还有一种说法是,微分系数的作用是加快系统的响应,对偏差量的变化做出响应,按偏差量趋向进行控制,把偏差消灭在萌芽状态之中,使超调小,稳定性增加,但对扰动的抑制能力减弱。德科蒙过程控制(武汉)有限公司座机:027-88062221传真:027-88068180邮箱: sales@whdkm.com原文出处:http://www.samson-china.com/a/xwzx/303.htmlABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" sandbox="allow-forms allow-popUPS allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" frameborder="0" src="https://googleads.g.doubleclick.net/pagead/ads?guci=2.2.0.0.2.2.0.0&client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A32776%2C2%3A32776%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1048576%2C32%3A32%2C40%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0&pra=5&wgl=1&tt_state=W3siaXNzdWVyT3JpZ2luIjoiaHR0cHM6Ly9hZHNlcnZpY2UuZ29vZ2xlLmNvbSISInN0YXRlIjowfSx7Imlzc3Vlck9yaWdpbiI6Imh0dHBzOi8vYXR0ZXN0YXRpb24uYW5kcm9pZC5jb20iLCJzdGF0ZSI6MH1d&dt=1608628162962&bpp=11&bdt=60&idt=52&shv=r20201203&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8-22fd78660ec40024%3AT%3D1602660717%3ART%3D1602660717%3AS%3DALNI_MYMQQp2TnvCbvJQtTRQsdNX_-71Bg&nras=1&correlator=6767684495902&frm=23&ife=1&pv=2&ga_vid=1541950461.1608628163&ga_sid=1608628163&ga_hid=1846106254&ga_fc=0&nhd=1&u_tz=480&u_his=10&u_java=0&u_h=1080&u_w=1920&u_ah=1030&u_aw=1920&u_cd=24&u_nplug=17&u_nmime=34&adx=-12245933&ady=-12245933&biw=1166&bih=568&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21066699%2C21066792%2C21068946&oid=3&pvsid=263441709538502&pem=16&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1664&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1030%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8204&bc=31&ifi=0&uci=0.zexkcq4fxhgf&fsb=1&dtd=88" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.zexkcq4fxhgf" data-load-complete="true"> |