临界制动
发动机制动
动态制动
电子制动力分配系统
缓速器
控制理论(社会学)
液压制动器
汽车工程
制动器
PID控制器
工程类
控制器(灌溉)
计算机科学
控制工程
控制(管理)
人工智能
生物
温度控制
农学
作者
Zhigang Zhou,Xiaofei Yin,Jie Zhang
出处
期刊:Machines
[MDPI AG]
日期:2022-12-16
卷期号:10 (12): 1235-1235
标识
DOI:10.3390/machines10121235
摘要
The difference in response to electric and hydraulic braking causes sudden changes in braking torque during braking mode switching. An electro-hydraulic composite braking system’s dynamic torque coordination control strategy is proposed under braking mode switching conditions. By establishing the dynamic response model of the electro-hydraulic braking system (EHB), the key factors affecting the response speed of the EHB are analyzed, and the dynamic fuzzy controller for the pressure regulation of the brake wheel cylinder is designed. At the same time, the nonlinearity and hysteresis in the hydraulic braking process are considered, as well as electrical brake response overshoots. The electric brake response model is established, and the PID controller with feedforward feedback is designed to control the motor to adjust the inertia overpressure or lag pressure deficiency in the hydraulic braking process. Finally, the simulation verification is carried out; the results show that the proposed strategy can increase the hydraulic brake response speed by 25.4%, the impact degree of the vehicle is not more than 6.25 GB, and the hydraulic steady state error does not exceed 2.3%, which improves the vehicle ride comfort under braking mode switching.
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