感应电机动态转速的非线性估计  

Nonlinear Observer for Induction Motors' Dynamic Speed

作　　者：王勋先[1] 丁刚[1] 韩曾晋[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《控制理论与应用》1999年第4期515-518,共4页Control Theory & Applications

摘　　要：本文给出两种观测器，一种是基于龙勃格观测器和自适应理论的转子磁通观测器，当转速未知时该观测器仍具有较高的观测精度；另一种是转子转速的非线性观测器，在该观测器中，转子转速是状态变量而非参数，克服了线性观测器中将转子转速作为参数带来的电机瞬变过程中转速观测不准的缺点，并在此基础上给出负载转短的估计公式，给出了仿真结果．This paper presents two kinds of estimator.The first one is a rotor flux observer based on the Luenbergerobserver and adaptive theory.The advantage of it is the highly observing precise in spite of the unknown rotor speed.The otherone is a nonlinear observer for observing the rotor speed which can observe the rotor speed precisely not only in statistic state butalso in dynamic state.The observing method for rotor resistance and torque ar also given in the paper,The result of the stimulation is displayed in the last.

关 键 词：感应电机 动态转速 非线性估计 观测器 

分 类 号：TM346.012[电气工程—电机]