控制理论与应用2012，Vol.29Issue(1)：34-40,7.
基于非光滑观测器的间隙三明治系统状态估计
Nonsmooth observer for sandwich systems with backlash
摘要
Abstract
Industrial systems involving backlash, such as mechanical transmission systems and hydraulic systems, can be described by socalled sandwich systems with backlash. A novel nonsmooth observer is proposed to handle the state estimation for sandwich systems with backlash. Based on the characteristics of the system, a nonsmooth statespace equation is constructed by using the separation principle. A nonsmooth observer is developed based on the obtained statespace equation. The observer switches automatically among different operating zones according to the changes of operation conditions. The convergence of the nonsmooth observer is discussed. The application of this observer to a practical hydraulic servo system is realized. The comparison of tracking performances of the hydraulic servo system is made between the proposed nonsmooth scheme and the conventional method. It is shown that the proposed nonsmooth approach is with much better estimated performance.关键词
非光滑观测器/间隙/三明治系统/状态估计Key words
nonsmooth observer/backlash/sandwich system/state estimation分类
信息技术与安全科学引用本文复制引用
周祖鹏,谭永红..基于非光滑观测器的间隙三明治系统状态估计[J].控制理论与应用,2012,29(1):34-40,7.基金项目
上海师范大学重点学科资助项目 （）
上海市教育委员会科研创新资助项目 （）
国家自然科学基金资助项目 （）
上海市科委重点资助项目 （）
上海市自然科学基金资助项目（09ZRl423400）. （）
