ABS继动阀动态响应特性研究

摘要

The electronic-magnetic part, pneumatic part and mechanical part of ABS relay valve are investigated. And a nonlinear dynamic model of ABS relay valve is presented. Dynamic response of current, e-lectromagnetic force, the displacement of spool, the control pressure and brake pressure are simulated by Matlab simulation tools. Some influencing factors to the valve' s dynamic characteristics, such as the voltage, the coil circle number, resistance, air gap between fixed core and spool are were analyzed.%研究了气压ABS继动阀电磁部分、机械运动部分和气路部分的结构及功能,建立了完整的阀体非线性数学模型.实现了线圈电流、电磁力、电铁芯位移、控制气压以及制动气压变化的动态过程仿真,并分析了驱动电压、线圈匝数、线圈电阻、主工作气隙等参数对ABS继动阀动态特性的影响,并研制了气压ABS继动阀综合性能测试台以验证数学模型的正确性.仿真结果与试验结果基本吻合,为深入研究ABS继动阀响应时间影响因素、提高ABS继动阀动态性能提供了可靠依据.