{"title":"大延迟系统的动力学与整定","authors":"E. Boe, Hsueh-Chia Chang","doi":"10.23919/ACC.1988.4789972","DOIUrl":null,"url":null,"abstract":"It is shown that for a general class of resonant systems, the cross-over frequency exhibits a discontinuous dependence on the process delay. This implies that Ziegler-Nichols type tuning techniques, which make explicit use of the cross-over frequency, will not be robust to errors/perturbations in the delay. For nonresonant systems with a cross-over frequency that depends on the delay continuously, we propose a new tuning rule for PI controllers that is superior to the classical Ziegler-Nichols and Cohen-Coon methods and show that it rapidly approaches the optimal ISE at large delay.","PeriodicalId":6395,"journal":{"name":"1988 American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1988-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Dynamics and Tuning of Systems with Large Delay\",\"authors\":\"E. Boe, Hsueh-Chia Chang\",\"doi\":\"10.23919/ACC.1988.4789972\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"It is shown that for a general class of resonant systems, the cross-over frequency exhibits a discontinuous dependence on the process delay. This implies that Ziegler-Nichols type tuning techniques, which make explicit use of the cross-over frequency, will not be robust to errors/perturbations in the delay. For nonresonant systems with a cross-over frequency that depends on the delay continuously, we propose a new tuning rule for PI controllers that is superior to the classical Ziegler-Nichols and Cohen-Coon methods and show that it rapidly approaches the optimal ISE at large delay.\",\"PeriodicalId\":6395,\"journal\":{\"name\":\"1988 American Control Conference\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-06-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1988 American Control Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.23919/ACC.1988.4789972\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1988 American Control Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/ACC.1988.4789972","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
It is shown that for a general class of resonant systems, the cross-over frequency exhibits a discontinuous dependence on the process delay. This implies that Ziegler-Nichols type tuning techniques, which make explicit use of the cross-over frequency, will not be robust to errors/perturbations in the delay. For nonresonant systems with a cross-over frequency that depends on the delay continuously, we propose a new tuning rule for PI controllers that is superior to the classical Ziegler-Nichols and Cohen-Coon methods and show that it rapidly approaches the optimal ISE at large delay.