CAJ | 학술논문

为消除直线电动机驱动的数控机床进给系统的摩擦阻力,实现无摩擦进给,采用一种新型的磁悬浮永磁直线同步电动机,将矢量控制分别应用于两套绕组,可以实现推力与悬浮力的解耦,进而实现对电动机悬浮子系统的独立控制.针对悬浮子系统为非线性被控对象以及存在不确定性未知扰动的特性,设计模糊PID控制器,并将其应用到悬浮子系统位移环中,以满足悬浮系统控制高精度、高鲁棒性的要求.仿真结果表明:该控制器能起到良好的抗干扰作用,系统的跟踪误差小,可以保持悬浮系统的稳定性.
위소제직선전동궤구동적수공궤상진급계통적마찰조력,실현무마찰진급,채용일충신형적자현부영자직선동보전동궤,장시량공제분별응용우량투요조,가이실현추력여현부력적해우,진이실현대전동궤현부자계통적독립공제.침대현부자계통위비선성피공대상이급존재불학정성미지우동적특성,설계모호PID공제기,병장기응용도현부자계통위이배중,이만족현부계통공제고정도、고로봉성적요구.방진결과표명:해공제기능기도량호적항간우작용,계통적근종오차소,가이보지현부계통적은정성.
In order to eliminate the friction of numerical control machine tool feed system driven by linear motor,a new magnetic suspension permanent magnet linear synchronous motor (PMLSM)was adopted. Vector control was applied to two sets of windings,so thrust and suspension force could be decoupled. Then the motor suspension subsystem could be controlled independently. It was difficult to control suspension subsystem of PMLSM because of the nonlinearity of the suspension subsystem model and uncertainty disturbances. A fuzzy PID controller was designed,which was used in displacement loop of the suspension subsystem to meet high accuracy and high robustness control requirements. The simulation results indicate that the suspension subsystem with this controller has a good performance for restraint disturbance and track of input signal.