基于压扭联轴器的二维缓冲阀的仿真特性研究

传统车辆换挡缓冲阀动态稳定性能差,将2D数字技术与缓冲阀相结合,能有效提高其重复精度且滞环小,但已有2D数字缓冲阀传动精度低且易污染。据此,提出一种压扭联轴器式2D缓冲阀。以重量轻、惯性低而且灵敏度高的压扭联轴器作为传动装置改进现有2D缓冲阀,利用AMESim实现主阀部分的结构仿真,在数学建模的基础上采用Simulink实现先导阀的特性输出,进行联合仿真,实现了不同工况条件的缓冲阀性能分析。仿真结果表明:基于压扭联轴器的2D缓冲阀缓冲特性与理想曲线趋势一致,验证了结构及仿真方法的有效性。

Study on Simulation Characteristics of 2D Buffering Valve Based on Compression-torsion Coupling

Traditional vehicle shift buffering valve has poor dynamic stability performance. The combination of 2D digital technology and buffering valve can effectively improve its repetition accuracy and low hysteresis, but the 2D digital buffering valve transmission accuracy is low and easy to be polluted. To solve this problem, a 2D buffering valve with thrust torsion coupling is proposed. Compared with existing 2D buffering valve, the valve had the advantage of light weight, low inertia and high sensitivity thrust torsion coupling for transmission. Drawing lessons from the idea of co-simulation, the structure of the main valve parts is simulated by using AMESim, and the pilot valve simulation is realized by using Simulink on the basis of the mathematical modeling. And finally the working conditions of different buffering valve performance analysis is presented. The results show that buffer characteristics of the valve is consistent with the trend of ideal curve, which verified the validity of the structure and simulation method.