Hidekazu Mchida, M. Kambara, Kouta Tanaka, F. Kobayashi
{"title":"A motor speed control system using dual-loop PLL and speed feed-forward/back","authors":"Hidekazu Mchida, M. Kambara, Kouta Tanaka, F. Kobayashi","doi":"10.1109/ICMA.2010.5588283","DOIUrl":null,"url":null,"abstract":"PLL speed control systems can completely reject speed error and steady-state phase error for constant-speed inputs. Though it does not usually handle inputs including acceleration, the dual-loop scheme improves, as a feed-forward control system, rising time and phase error for acceleration input. However, since it is fundamentally a third-order PLL, it has slow rising up characteristics than speed feed-back, and cannot avoid over/undershoots. Nonetheless, the first loop has rapid rising up characteristics and no over/undershoot, since it is an ideal second-order PLL system. In this article, to solve the problem, we show a hybrid system of the dual-loop PLL and speed feed-forward/back. It has fast rising up characteristics and no over/undershoots thanks to the first and third PLL as F/V converter, which cannot be achieved in traditional PLL systems.","PeriodicalId":145608,"journal":{"name":"2010 IEEE International Conference on Mechatronics and Automation","volume":"37 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 IEEE International Conference on Mechatronics and Automation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICMA.2010.5588283","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
PLL speed control systems can completely reject speed error and steady-state phase error for constant-speed inputs. Though it does not usually handle inputs including acceleration, the dual-loop scheme improves, as a feed-forward control system, rising time and phase error for acceleration input. However, since it is fundamentally a third-order PLL, it has slow rising up characteristics than speed feed-back, and cannot avoid over/undershoots. Nonetheless, the first loop has rapid rising up characteristics and no over/undershoot, since it is an ideal second-order PLL system. In this article, to solve the problem, we show a hybrid system of the dual-loop PLL and speed feed-forward/back. It has fast rising up characteristics and no over/undershoots thanks to the first and third PLL as F/V converter, which cannot be achieved in traditional PLL systems.