Key Parameter Design and Analysis of Flux Reversal Linear Rotary Permanent Magnet Actuator
Key Parameter Design and Analysis of Flux Reversal Linear Rotary Permanent Magnet Actuator
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DOI：
10.1109/tasc.2018.2889625
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发表时间：
2019-03
影响因子：
1.8
通讯作者：
K. Guo;Youguang Guo
中科院分区：
文献类型：
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作者：
K. Guo;Youguang Guo
磁通反转线性旋转永磁执行器（FR-LRPMA）是一种两自由度的执行器，在每个定子极的表面安装两个铁磁（Fe）极和两个永磁（PM）极。采用该驱动器的理想线性模型，分析了该驱动器的磁链波形比传统拓扑更接近正弦。为了减小齿槽转矩和制动力的幅值，从周向和轴向两个方向研究了FR-LRPMA铁极和永磁极之间的关键间隙参数。利用磁动势解析法推导出齿槽转矩和止动力的表达式，并以此求出最优的间隙参数值。采用有限元法分析了作动器的电磁特性。减小了齿槽转矩和支撑力的幅值，反电动势波形比原拓扑更接近正弦波，实验验证了这一点。
Flux reversal linear rotary permanent magnet actuator (FR-LRPMA) is a two-degree-of-freedom actuator with two ferromagnetic (Fe) poles and two permanent magnet (PM) poles mounted on the surface of each stator pole. The flux linkage waveform of the actuator is more sinusoidal than that of the traditional topology, which are analyzed by the ideal linear model of one stator section of the proposed actuator. In order to reduce the amplitudes of the cogging torque and detent force, a key space gap parameter of the FR-LRPMA between the Fe pole and PM pole is studied in the circumferential and axial directions. The expressions of cogging torque and detent force are derived by the magnetomotive force analytical method, which are used to obtain the optimal space gap parameter value. The electromagnetic characteristics of the actuator are analyzed by the finite-element method. The amplitudes of cogging torque and detent force are reduced and the back electromotive force waveform is more sinusoidal than that of the original topology, which are verified by the experiment.