综合传动装置换挡阀结构参数优化

为提高综合传动装置换挡阀的动态响应特性,对电液换挡控制回路中的换挡阀进行压力、流量特性分析,基于AMESim软件建立其动力学仿真模型。针对换挡阀阀芯直径、弹簧刚度和换挡阀阀口遮盖量这3个关键参数对换挡阀动态响应特性的影响进行了仿真分析。采用遗传算法,对影响换挡阀动态响应特性的结构参数包括弹簧刚度和阀口遮盖量进行优化。通过仿真模型和测试试验结果对比,证明经过优化后换挡阀的动态响应特性得到了改善,验证了此方法的可行性。

Optimized Methodfor Shift Valve Used in Integrated Transmission

The pressure and flow characteristics of the shift valve in electro-hydraulic control circuit are analyzed to improve the working principle of the shift valve used in the integrated transmission. A dynamics simulation model of shift valve is established based on AMESim software. The effects of spool diameter, spring stiffness and slide lap on the dynamic respond characteristics and performance of shift valve are analyzed through simulation. The structural parameters, including spring stiffness and slide lap, of shift valve are optimized based on genetic algorithm. The simulation results are compared against the test ones. The results show that the simulation analysis with AMESim and the structure optimization with genetic algorithm are instructive, the working principle of the optimized shift valve is improved, as well as the feasibility of the proposed method is verified.