双定子轴向力偶型柱塞马达的转矩特性分析

为解决传统轴向柱塞马达轴向力不平衡、输出效率低的问题，从扭矩大小、波动率和柱塞工作效率等方面开展研究，结合双定子原理提出双定子轴向力偶型柱塞马达。该马达通过特殊的结构使力偶转矩输出，实现轴向力平衡。通过传统轴向柱塞马达和双定子轴向力偶型柱塞马达各自柱塞的受力情况，推导了该马达单个柱塞组件产生的瞬时理论转矩，借助MATLAB编程，对比分析了传统轴向柱塞马达与该马达的输出转矩，结果显示传统轴向柱塞马达输出转矩为11.59~11.89 N·m，而该马达输出转矩为23.33~23.63 N·m，比传统轴向柱塞马达的输出转矩增加了近1倍，转矩波动降低为原来一半，柱塞的工作效率增加了1倍，并通过试验得出该马达的机械效率和容积效率，验证了原理的合理性，为后续相关研究奠定了基础。

Torque Characteristic Analysis of Double Stator Axial Couple Piston Motor

In order to solve the problem of unbalanced axial force and low output efficiency of the traditional axial piston motor, a double stator axial couple piston motor was proposed based on the principle of double stators. The motor output the couple torque through a special structure to achieve axial force balance. The instantaneous theoretical torque generated by a single plunger assembly of the traditional axial piston motor and the double stator axial couple piston motor was derived through the force on their respective plungers. The output torques of the traditional axial piston motor and the motor were compared and analyzed with the help of MATLAB programming. The results show that the output torque of the traditional axial piston motor is from 11.59 N·m to 11.89 N·m, while the output torque of the motor is from 23.33 N·m to 23.63 N·m;compared with the traditional axial piston motor, the output torque is nearly doubled, the torque fluctuation is reduced to half of the original, and the working efficiency of the plunger is doubled. Through the test, the mechanical efficiency and volumetric efficiency of the motor are obtained, which verifies the rationality of the principle and lays a foundation for the follow-up related research.