风机DTC系统自适应滑模速度和位置研究  

Adaptive Sliding Mode Speed and Position Observation of Fans DTC System

作　　者：严育才 张融[1,2] 唐传胜 张光德[4] YAN Yu-cai;ZHANG Rong;TANG Chuan-sheng;ZHANG Guang-de(School of Mechanical Engineering,Wuchang Institute of Technology,Hubei Wuhan 430065,China;Green Fan Made Hubei Cooperative Innovation Center,Hubei Wuhan 430065,China;School of Mechanical and automotive Engineering,Nanyang Institute of Technology,He’nan Nanyang 473004,China;School of Automotive and Transportation Engineering,Wuhan University of Science and Technology,Hubei Wuhan 430081,China)

机构地区：[1]武昌工学院机械工程学院,湖北武汉430065 [2]绿色风机制造湖北省协同创新中心,湖北武汉430065 [3]南阳理工学院机械工程学院,河南南阳473004 [4]武汉科技大学汽车与交通工程学院,湖北武汉430081

出　　处：《机械设计与制造》2019年第9期161-164,共4页Machinery Design & Manufacture

基　　金：湖北省高等学校创新能力提升计划(湖北省2011计划)2013XTKY03

摘　　要：针对传感器的存在会增加交流伺服系统的安装难度和故障率、降低系统的跟踪性能等问题,提出了一种自适应滑模速度和位置观测方法。该方法基于反电动势来实现伺服电机的转子位置和速度估计,以实现参数摄动和干扰的鲁棒性。控制策略上用sigmoid函数来代替sign函数中的开关函数,用李雅普诺夫稳定理论进行观测器的稳定性分析,并通过定子电子的自适应更新,提高了系统的稳态性能。最后,通过与传统滑模观测器进行对比,验证了本方法的有效性。Focus on the problem that the existence of the sensor in the AC servo system will increase the installation difficulty and failure rate,and induce the tracking performance of the system,an adaptiving sliding mode speed and position observation method is proposed.Rotor speed and position estimation is achieved based on back electromotive force,in order to achieve the parameter perturbation and interference robustness.Low-pass filter and rotor position compensation are used in the traditional sliding mode observer reduce the buffeting phenomenon caused by switching function,while the introduction of low-pass filter will cause delay phenomenon.sigmoid function instead of sign function is used for the switching function,and the stator resistance is adaptive updated to improve the steady state performance of the system.The stability of the proposed observation scheme is analyzed according to Lyapunov stability theory.Finally,compared with the traditional sliding mode observer,the effectiveness of the proposed method is verified.

关 键 词：交流伺服系统 自适应滑模观测器 速度和位置观测 直接转矩控制 

分 类 号：TH16[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]