机床与液压
機床與液壓
궤상여액압
MACHINE TOOL & HYDRAULICS
2014年
3期
101-103
,共3页
永磁直线同步电动机%预测控制%干扰观测器
永磁直線同步電動機%預測控製%榦擾觀測器
영자직선동보전동궤%예측공제%간우관측기
Permanent magnet linear synchronous motor%Predictive controller%Disturbance observer
数控机床用永磁直线同步电动机（PMLSM）在高速度高精度加工时存在的系统滞后、外部扰动、系统参数变化等不确定因素严重影响伺服系统的控制性能。为解决这一问题，提出将模型预测控制器（MPC）和扰动观测器（DOB）相结合的预测鲁棒控制系统。采用MPC作为前馈控制器，通过模型预测、滚动优化和反馈校正来提高系统的跟踪性能；采用DOB对外部负载等不确定性扰动进行观测和抑制，进而提高系统的鲁棒性，达到同时提高系统跟踪性能和鲁棒性的目的。仿真实验表明：所提出的控制方法是有效可行的，明显地提高系统的控制精度。
數控機床用永磁直線同步電動機（PMLSM）在高速度高精度加工時存在的繫統滯後、外部擾動、繫統參數變化等不確定因素嚴重影響伺服繫統的控製性能。為解決這一問題，提齣將模型預測控製器（MPC）和擾動觀測器（DOB）相結閤的預測魯棒控製繫統。採用MPC作為前饋控製器，通過模型預測、滾動優化和反饋校正來提高繫統的跟蹤性能；採用DOB對外部負載等不確定性擾動進行觀測和抑製，進而提高繫統的魯棒性，達到同時提高繫統跟蹤性能和魯棒性的目的。倣真實驗錶明：所提齣的控製方法是有效可行的，明顯地提高繫統的控製精度。
수공궤상용영자직선동보전동궤（PMLSM）재고속도고정도가공시존재적계통체후、외부우동、계통삼수변화등불학정인소엄중영향사복계통적공제성능。위해결저일문제，제출장모형예측공제기（MPC）화우동관측기（DOB）상결합적예측로봉공제계통。채용MPC작위전궤공제기，통과모형예측、곤동우화화반궤교정래제고계통적근종성능；채용DOB대외부부재등불학정성우동진행관측화억제，진이제고계통적로봉성，체도동시제고계통근종성능화로봉성적목적。방진실험표명：소제출적공제방법시유효가행적，명현지제고계통적공제정도。
For NC machine with permanent magnet linear synchronous motor (PMLSM),in the high speed and high precision machining,uncertain factors seriously affect the control performance of the servo system,such as the system decay,the external dis-turbances,parameter variations and so on. The predictive robust control system was proposed based on combining the model predictive controller (MPC)with disturbance observer (DOB). The MPC was used as the feedforward controller,through model prediction, rolling optimization and feedback correction to improve the tracking performance of the system;DOB was used to observe and suppress external load uncertainty disturbance. So the robustness of the system is improved,to achieve the objective of improving system tracking performance and robustness. Simulation results show that the proposed method is feasible and effective,can obviously improve the con-trol precision of the system.
