According to the electro-hydraulic composite braking torque coordination control strategy based on the type-2 fuzzy logic, a regenerative braking distribution coefficient kr is introduced to represent the motor braking participation degree, and under the non-emergency braking working condition, regenerative braking torque and hydraulic braking torque are distributed with the braking strength z and the battery SOC as interval type-2 fuzzy logic input; and under the emergency braking working condition, the road adhesion coefficient mu and the battery SOC serve as interval type-2 fuzzy logic input, and the regenerative braking torque and the hydraulic braking torque are distributed. In addition, according to the emergency braking working condition butt joint road surface motor torque compensation strategy, hydraulic braking torque delay is compensated through the action driving or braking torque of the motor when the road surface adhesion coefficient suddenly changes. The composite braking safety of the electric automobile is improved, the energy recovery effect is improved, and meanwhile the problems that the slip rate is suddenly increased and the slip rate is slowly tracked in the anti-lock process are solved.

    一种基于二型模糊逻辑的电液复合制动力矩协调控制策略,引入再生制动分配系数kr表征电机制动参与程度,其中非紧急制动工况下以制动强度z、电池SOC为区间二型模糊逻辑输入对再生制动力矩、液压制动力矩进行分配;紧急制动工况下以路面附着系数μ、电池SOC为区间二型模糊逻辑输入对再生制动力矩、液压制动力矩进行分配。此外,一种紧急制动工况对接路面电机力矩补偿策略,利用电机在路面附着系数突变时作用驱动或制动力矩补偿液压制动力矩延迟。本发明提高了电动汽车复合制动安全性与改善能量回收效果,同时解决防抱死过程滑移率骤增与滑移率跟踪缓慢的问题。


    Access

    Download


    Export, share and cite



    Title :

    Electro-hydraulic composite braking torque coordination control strategy based on type-2 fuzzy logic


    Additional title:

    一种基于二型模糊逻辑的电液复合制动力矩协调控制策略


    Contributors:
    WANG JUNCHENG (author) / LYU LINFENG (author) / XIANG ZHONG (author) / WANG FAHUI (author)

    Publication date :

    2023-08-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    Electro-hydraulic composite braking torque compensation method based on fuzzy control

    ZENG XIAOHUA / LI JINGJING / WANG YUNYE et al. | European Patent Office | 2024

    Free access

    Electric vehicle electro-hydraulic composite braking torque ripple coordination control system and method

    ZHANG RUIJUN / ZHAO WANZHONG / WANG CHUNYAN et al. | European Patent Office | 2022

    Free access

    Electro-hydraulic composite braking coordinated control method

    RUAN RENXIN / ZHOU BEI / HUANG SONG et al. | European Patent Office | 2020

    Free access


    Decoupling type electro-hydraulic composite braking system, control method and vehicle

    ZHENG ZUXIONG / ZHANG YUAN / ZHANG YUNGANG | European Patent Office | 2023

    Free access