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电控液压制动系统特性分析与控制策略研究
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国家自然科学基金青年基金(51705189);东莞市社会科技发展项目(2019507154530)


Research on characteristics analysis and control strategy of Electric-control Hydraulic Brake system
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    摘要:

    汽车电控液压制动系统是将线控技术和汽车液压控制单元相结合的制动控制方式,其动态性能直接影响了整车的制动效果。为提升EHB系统控制效能,首先分析了EHB系统的工作特性,利用AMESim软件建立系统的仿真模型。基于所建立模型,结合PWM和逻辑门限值法设计了EHB系统的控制策略,最后进行压力跟随及ABS制动效果测试。研究结果表明:所设计的控制方法可以实现汽车的有效制动,对于目标压力的响应特性具有很好的效果,大大提高了汽车制动性能。

    Abstract:

    The Electric-control Hydraulic Brake (EHB) system of automobile is a brake control mode which combines the technology of wire control within hydraulic control unit. The dynamic performance of EHB directly affects the braking effect of the whole automobile. In order to improve the control efficiency of EHB system, in this paper, the working characteristics of EHB system are analyzed firstly, and then the simulation model of EHB system is established by using AMESim software. Based on the proposed model, the control strategy of EHB system is designed with PWM and logic threshold method. Finally, the pressure following and ABS braking effect are tested. The test results show that the designed control method can achieve the effective braking of the vehicle, which has a good effect on the response characteristics of the target pressure and greatly improves the braking performance of the vehicle.

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徐志强.电控液压制动系统特性分析与控制策略研究[J].机床与液压,2020,48(6):23-28.
. Research on characteristics analysis and control strategy of Electric-control Hydraulic Brake system[J]. Machine Tool & Hydraulics,2020,48(6):23-28

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  • 在线发布日期: 2020-04-23
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