动压气浮轴承永磁同步电机无传感器控制启动策略研究  

Sensorless Control Starting Strategy of Hydrodynamic Air Bearing PMSM

作　　者：李玉猛[1] 马官营[1] 惠欣[1] 王月[1] LI Yumeng;MA Guanying;HUI Xin;WANG Yue(Beijing Institute of Control Engineering,Beijing 100094,China)

机构地区：[1]北京控制工程研究所,北京100094

出　　处：《空间控制技术与应用》2022年第6期46-52,共7页Aerospace Control and Application

基　　金：装备预研基金项目(61405170301)。

摘　　要：针对动压气浮轴承永磁同步电机无传感器控制,研究了启动控制策略,设计了三段法.静止状态下转子位置未知,通过预定位使转子转动到可知位置.低速下,反电势信号幅值很小难以得到过零脉冲信号来获取转速信息,因此设计了速度开环加速阶段.开环加速到一定转速时,利用反电势过零脉冲信号进行速度闭环,实现了转速同步控制.恒流驱动时,电机的开环加速曲线可近似为线性规律,并通过仿真和试验进行了验证.开环加速阶段完成后,利用获得的反电势信号实现了闭环控制,电机加速至给定转速,试验结果证明启动策略是可行的.For the sensorless control of hydrodynamic air bearing permanent magnet synchronous motor(PMSM),the start control strategy is presented,and the three stage method is designed in this paper.In the static state,the rotor position is unknown,but it can rotate to a definite position by pre setting.At the low speed,the speed information is difficult to obtain because the amplitude of back EMF is too little to get the zero crossing pulse.To overcome this problem,a speed open loop acceleration is proposed.A certain speed is obtained with open loop acceleration,and then the speed loop is closed via the zero crossing pulse signal of back EMF.At last,the synchronous speed control is realized.Under the constant current drive,the open loop acceleration curve of PMSM can be approximated to a linear law,and this is verified by simulation and experiment.After the open loop acceleration stage is completed,the closed loop control can be established via the obtained back EMF,and the motor can be accelerated to a given speed.The test results confirm that this strategy is feasible.

关 键 词：动压气浮轴承永磁同步电机 无传感器控制 启动策略 恒流驱动 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程]