无级变速器节能型减压回路低温下压力线性度优化

摘要/Abstract

摘要： 针对无级变速器中应用节能型先导比例减压阀的减压回路压力线性度随油液温度降低而变差的现象，采用中心组合的试验设计方法，以颤振电流的幅值及频率为输入参数，以压力线性度为观察目标进行了低温测试。根据低温测试结果建立了响应面模型，基于响应面方程进行了遗传算法寻优。根据仿真优化结果进行的低温测试结果说明了此方法的有效性。

关键词: 无级变速器, 低温, 压力线性度, 试验设计, 优化验证

Abstract: Aiming at the phenomenon that the pressure linearity of CVT pressure reduction circuits with energy-saving pilot proportional pressure reduction valve worsened with the decrease of oil temperature, a test design method of central combination was adopted. Amplitude and frequency of dither currents were taken as input parameters, and the pressure linearity was taken as observation target to conduct low temperature tests. According to the results of low temperature tests, response surface model was established, and then genetic algorithm was used to optimize the response surface equation. Results of low temperature tests with the simulation optimization parameters show the effectiveness of this method.

Key words: continuously variable transmission(CVT), low temperature, pressure linearity, design of experiment, optimization and verification

中图分类号:

TP137

罗威1;曾洪阳1;周云山1,2;胡哓岚1;张飞铁1;魏东1. 无级变速器节能型减压回路低温下压力线性度优化[J]. 中国机械工程.

LUO Wei1;ZENG Hongyang1;ZHOU Yunshan1,2;HU Xiaolan2;ZHANG Feitie1;WEI Dong2. Optimization of Pressure Linearity of Energy-saving Reduction Circuits of CVT at Low Temperature[J]. China Mechanical Engineering.

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