邵阳学院学报:自然科学版
邵暘學院學報:自然科學版
소양학원학보:자연과학판
Journal of Shaoyang University:Science and Technology
2012年
2期
45-48
,共4页
全维速度观测器%模型参考自适应系统%感应电动机%转速辨识
全維速度觀測器%模型參攷自適應繫統%感應電動機%轉速辨識
전유속도관측기%모형삼고자괄응계통%감응전동궤%전속변식
full-order speed observer%model reference adaptive system%induction motor%speed identification
为了辨识感应电机的转速,提出了一种模型参考自适应观测器.该观测器基于模型参考自适应系统(model reference adaptive system,MRAS),将感应电机和全阶观测器分别作为参考模型和可调模型,基于两模型输出之间的误差构造了一个自适应律,通过自适应律不断调整观测器的参数,全阶观测器的输出将实现对实际系统输出的跟踪,并用李雅普诺夫稳定性定理验证了系统的稳定性.理论分析和仿真结果表明,所提出的感应电机无速度传感器矢量控制系统的转速辨识方法具有令人满意的动静态性能.
為瞭辨識感應電機的轉速,提齣瞭一種模型參攷自適應觀測器.該觀測器基于模型參攷自適應繫統(model reference adaptive system,MRAS),將感應電機和全階觀測器分彆作為參攷模型和可調模型,基于兩模型輸齣之間的誤差構造瞭一箇自適應律,通過自適應律不斷調整觀測器的參數,全階觀測器的輸齣將實現對實際繫統輸齣的跟蹤,併用李雅普諾伕穩定性定理驗證瞭繫統的穩定性.理論分析和倣真結果錶明,所提齣的感應電機無速度傳感器矢量控製繫統的轉速辨識方法具有令人滿意的動靜態性能.
위료변식감응전궤적전속,제출료일충모형삼고자괄응관측기.해관측기기우모형삼고자괄응계통(model reference adaptive system,MRAS),장감응전궤화전계관측기분별작위삼고모형화가조모형,기우량모형수출지간적오차구조료일개자괄응률,통과자괄응률불단조정관측기적삼수,전계관측기적수출장실현대실제계통수출적근종,병용리아보낙부은정성정리험증료계통적은정성.이론분석화방진결과표명,소제출적감응전궤무속도전감기시량공제계통적전속변식방법구유령인만의적동정태성능.
To observe speed parameter of induction motor, this paper proposes a model reference adaptive system (MRAS) ob- servers. This strategy takes induction motor as the reference model and full-order rotor speed observer as the adjustable model. To for- mulate a self-adaptive algorithm, Lyapunov theorem of asymptotic stability is used according to output errors between two models. The output of full-order rotor speed observer will track the output of the actual system. Simulation results show that the proposed strategy used for speed identification in the speedless sensor vector control system is theoretically possible and has satisfactory performance.