首页 | 本学科首页   官方微博 | 高级检索  
     检索      


An anti-wind-up controller design based on a two-degrees-of-freedom servosystem design approach
Authors:Email author" target="_blank">Young-Bok?KimEmail author  Ja-Sam?Goo
Institution:(1) Department of Control & Mechanical Engineering, College of Engineering, Pukyong National University, San 100, Yongdang-Dong, Nam-gu, Pusan, 608-739, Korea;(2) Department of Naval Architecture and Marine Systems Engineering, College of Environmental and Marine Science and Technology, Pukyong National University, Pusan, Korea
Abstract:In actual control systems, many types of restrictions or nonlinearities exist. For example, owing to nonlinearities in the actuators or sensors, the controller may not be applicable in some practical situations. Such a nonlinearity is amplitude saturation in actuators. Although it may sometimes be ignored, failure to consider actuator saturation may severely degrade the performance of a closed-loop system, and even lead to instability. On the other hand, limiting the controller gain to avoid saturation sacrifices control effort, and may lead to loss of performance. Many approaches have been tired in order to overcome these undesirable problems, and some good results have been obtained. The saturation has been replaced with a gain which is calculated as a function of the variance of the signal at its inputs. Based on this assumption, some attractive control theories have been introduced. Here, we introduce a useful anti-wind-up control system. In other words, the control system proposed has a very simple design process and can guarantee good control performance, as it is based on the assumption that the saturation is replaced with a varying gain. The validity of the proposed control system will be shown by comparing some simulation results.
Keywords:Nonlinearity  Actuator  Saturation  Control performance  Anti-wind-up
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号