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为提高一体化电液作动器(EHA)的性能,对新型EHA中广泛使用的变排量液压泵中的变量机构进行了优化设计。采用锥蜗轮蜗杆传动代替了原来的齿轮传动体系并与泵壳体进行了一体化设计,采用solidworks进行了三维实体化建模,运用AMESim搭建了改进前后EHA系统的仿真模型并进行对比分析。经过仿真实验,改进后的EHA系统在整体刚度提升了31%,频率响应提升了11.2%,显著改善了系统性能,验证了设计的正确性。
To improve the performance of the integrated electro-hydraulic actuator (EHA), the variable mechanism in the variable displacement hydraulic pump widely used in the new EHA was optimized. The worm gear drive instead of the original gear drive system and the pump shell were integrated design, the use of solidworks three-dimensional solidification modeling, the use of AMESim to build the improved EHA system simulation model and comparative analysis. After simulation, the improved EHA system has a 31% increase in overall stiffness and a 11.2% increase in frequency response, significantly improving system performance and verifying the correctness of the design.