In this paper, an electro-hydrostatic actuator driven by dual axial-mounted magnetostrictive material rods-based pumps (MMPs) with a new type of active rectification valve is designed in the current study. Based on flow distribution of the active rectification valve and driving energy provided by two MMPs, the actuator can output continuous and bidirectional displacement. By establishing a mathematical model of the actuating system, using simulation techniques, the change rule of hydraulic cylinder’s motion state caused by different driving signals are studied and analyzed. Test equipment platform is constructed in the laboratory to test the output characteristics and confirm the feasibility of the new concept. The experimental results indicate that the maximum flow rate can reach approximately 2.7 L·min⁻¹, while the operating frequency is 180 Hz.

本文设计了一种由双轴向安装的磁致伸缩杆棒式泵（MMP）和新型主动整流阀驱动的静液压执行机构。根据主动整流阀的流量分配和两个MMP提供的驱动能量，执行器可以输出连续和双向位移。通过建立执行机构的数学模型，运用仿真技术，研究和分析了不同驱动信号引起的液压缸运动状态的变化规律。在实验室中构建了测试设备平台，以测试输出特性并确认新概念的可行性。实验结果表明，最大流量可以达到约2.7 L·min ^-1，而工作频率为180 Hz。