摘要
在分析比例电磁阀工作原理的基础上,建立比例电磁阀电流控制模型进行仿真。仿真表明,电磁阀控制频率过低会使比例阀占空比与输出电流间的比例性变差,产生控制误差,因此要选取合适的PWM频率减小控制误差;根据感性负载的电流响应特性,以及混合动力汽车变速箱中比例电磁阀的工作频率要求,提出P-I控制算法并进行实验验证,试验结果表明该算法可以根据比例电磁阀电流动态响应要求计算出相应参数值,且满足控制需求。
We establish a current control model of proportional electromagnetic valve based on the analysis of operational principle of proportional electromagnetic valve.The simulation shows that too low a control frequency of solenoid valve will make the proportionality between duty ration of proportional valve and output current worse,and a control error is generated.So an appropriate PWM frequency should be selected.According to current response characteristics of perceptual load and working frequency requirements of proportional solenoid valve in hybrid vehicle transmissions,a PI control algorithm is derived.The PI control algorithm can calculate different parameter values according to the dynamic response requirements of proportional solenoid valve and meet the control requirements.
作者
邓勇
沙庆康
向玉德
田飞
DENG Yong;SHA Qing-kang;XIANG Yu-de;TIAN Fei(College of Mechanical Engineering,Nantong University,Nantong,Jiangsu 226000;System Department,Coliyuan Hybrid Technology Co.,Ltd.,Shanghai 200000)
出处
《液压与气动》
北大核心
2018年第9期38-43,共6页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金(61775118)
关键词
比例电磁阀
P-I控制算法
控制特性
动态响应
proportional solenoid valve
P-I control algorithm
control characteristic
dynamic response
