无级变速器节能型减压回路低温下压力线性度优化  

Optimization of Pressure Linearity of Energy-saving Reduction Circuits of CVT at Low Temperature

作　　者：罗威[1] 曾洪阳 周云山[1,2] 胡哓岚 张飞铁 魏东[1] LUO Wei;ZENG Hongyang;ZHOU Yunshan;HU Xiaolan;ZHANG Feitie;WEI Dong(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha,410012;Hunan Rongda Intelligent Transmission Co.,Ltd.,Changsha,410205)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410012 [2]湖南容大智能变速器股份有限公司,长沙410205

出　　处：《中国机械工程》2020年第10期1197-1202,1212,共7页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51475151)。

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。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.

关 键 词：无级变速器 低温 压力线性度 试验设计 优化验证 

分 类 号：TP137[自动化与计算机技术—控制理论与控制工程]