祝贺课题组研究论文被期刊Journal of Systems and Control Engineering录用
论文题目：Development of a magnetostrictive material based electro-hydrostatic actuator with an active rotary rectifying valve
论文作者：Zhu yuchuan；Wang zhenyu；Fei shangshu
投稿时间：18-Jun-2018
录用时间：03-Oct-2018
摘要：A magnetostrictive material based electro-hydrostatic actuator (MEHA) with an active rotary valve for fluid rectification is presented in this paper, which consists of a magnetostrictive materials based pump (MMP), an active rotary valve and a hydraulic cylinder. First, the MMP plunger motion model is established, and the factors that affect the phase lag between the MMP plunger displacement and the input voltage are discussed. Second, the flow area model of the active rotary valve and the kinetic model of the cylinder are established. After that, the phase compensation for the input voltage that influences the synchronous motion between the MMP plunger and the valve spool is investigated. Finally, the simulation model is built in Matlab/Simulink, and the results are subsequently verified with experimental data. The results indicate that the phase lag of MMP plunger output displacement is mostly influenced by magnetization with a low driving frequency and by an eddy current with a high driving frequency. The compensation angle for the input voltage affects the output flow of the MEHA and the moving direction of the cylinder piston rod. For a MEHA rectified by the active rotary valve, at the driving frequency of 200 Hz, the peak output flow can reach 2.4L/min, which is much higher than 1.1L/min of a MEHA rectified by the passive reed valve.