摘要
重型液力自动变速器的最佳换挡点的选取,对于车辆的整体动力性和工作效率等研究具有重要意义。针对重型液力自动变速器换挡控系统的数学模型,为解决车辆换挡最佳点的选取和液力变矩器效率低等问题,改善传统的单参数和双参数换挡规律无法实时根据行驶环境调整换挡,引入了模糊控制方法,基于传统的两参数换挡规律提出了模糊换挡控制策略,并验证了以车速和油门开度的两参数模糊换挡规律的正确性。仿真结果表明,上述方法在换挡点选取效果显著,提高了车辆行驶的动力性。
The selection of the best shift point for the heavy-duty hydraulic automatic transmission is of great significance for the research on the overall dynamics and work efficiency of the vehicle.In order to solve the problem of choosing the best point of vehicle shift and the low efficiency of torque converter and so on,the improvement of the traditional single-parameter and two-parameter shift schedule can not be carried out in real time according to the mathematical model of shift control system of heavy duty hydraulic automatic transmission.This paper introduces a fuzzy control strategy based on the traditional two-parameter shift schedule,and verifies the correctness of the fuzzy shift schedule with two parameters of vehicle speed and throttle opening.The simulation results show that the above method has a remarkable effect at the shift point and improves the driving force of the vehicle.
作者
褚园民
吴怀超
赵丽梅
曹刚
CHU Yuan-min;WU Huai-chao;ZHAO Li-mei;CAO Gang(College of Mechanical Engineering,Guizhou University,Guiyang Guizhou 550025,China)
出处
《计算机仿真》
北大核心
2019年第5期137-143,共7页
Computer Simulation
基金
贵州省高层次创新型人才培养计划项目(黔科合平台人才[2016]5659)
贵州省教育厅创新群体重大研究项目(黔教合KY字[2018]011)
贵州省科技重大专项(黔科合重大专项字[2013]6015)
关键词
重型液力自动变速
模糊控制
换挡策略
仿真
Heavy-duty hydrodynamic automatic transmission
Fuzzy control
Shift strategy
Simulation
