Dynamic Characteristics for the Water Hydraulic Direct-driven High-speed On-Off Valve

A water hydraulic direct-driven high-speed on-off valve was introduced for the water hydraulic robots. And a physical model was established by AMESim simulation software, and the dynamic performance was simulated. On this basis, the effect of such structure parameters as the valve core diameter, valve hole diameter and half cone angle of valve core for the water hydraulic high-speed on-off valve was analyzed by using AMESim batch method, and based on the genetic algorithm, the dynamic characteristics of the water hydraulic on-off valve were analyzed when the multi-parameters chandged. Then, the optimal structural parameters of the on-off valve were achieved, and a theoretical basis for the the improvement of dynamic performance was provided. Finally, a prototype of water hydraulic high-speed on-off valve was developed, and the experimental study on the dynamic performance was carried out. The opening response time was 7 ms, closing response time was 9 ms. Through the comparison of theory and experiment, it verifies that the dynamic performance of the developed model can meet the expected technical requirements.