Regulation Method for Torque-Angle Characteristics of Rotary Electric-Mechanical Converter Based on Hybrid Air Gap
Regulation Method for Torque-Angle Characteristics of Rotary Electric-Mechanical Converter Based on Hybrid Air Gap
复制标题
DOI：
10.1186/s10033-020-00452-4
复制
发表时间：
2020-05-01
影响因子：
4.2
通讯作者：
Qiu, Xinguo
中科院分区：
文献类型：
--
作者：
Meng, Bin;Lai, Yongjiang;Qiu, Xinguo
电-机转换器的矩角特性是决定电液比例控制系统性能的重要因素。旋转式电-机械转换器（REMC）获得平坦的矩角特性远比传统比例电磁铁困难，极大地影响了旋转阀在电液比例控制系统中的推广应用。提出了一种简单可行的基于混合气隙的REMC矩角特性调节方法。该调节通过将附加轴向气隙与原始径向气隙并联来执行，以获得平坦的转矩-角度特性并增加输出转矩。为了进行比较，制造了基于混合气隙和径向气隙的REMC原型，并建立了专用试验台。通过磁路分析、有限元仿真和实验研究，研究了不同励磁电流和阶跃响应下的矩角特性。实验结果与理论分析一致。结果表明，基于混合气隙结构的稀土永磁电动机在进一步优化关键结构参数的基础上，可以获得较平坦的矩角特性，并提高输出转矩。该调节方法为比例旋转机电变换器的设计提供了一种新的途径。
The torque-angle characteristics of electric-mechanical converters are important determinants of the quality of electrohydraulic proportional control systems. It is far more difficult for a rotary electric-mechanical converter (REMC) to obtain flat torque-angle characteristics than traditional proportional solenoid, greatly influencing the promotion and application of rotary valves for electrohydraulic proportional control systems. A simple and feasible regulation method for the torque-angle characteristics of REMCs based on a hybrid air gap is proposed. The regulation is performed by paralleling an additional axial air gap with the original radial air gap to obtain a flat torque-angle characteristic and increase output torque. For comparison, prototypes of REMCs based on hybrid and radial air gaps were manufactured, and a special test rig was built. The torque-angle characteristics under different excitation currents and step responses were studied by magnetic circuit analysis, finite element simulation, and experimental research. The experimental results were consistent with the theoretical analysis. It was shown that REMCs based on a hybrid air gap can obtain a flat torque-angle characteristic with further optimizing of key structural parameters and also increase output torque. This regulation method provides a new approach for the design of proportional rotary electromechanical converters.