高速开关阀电磁滞后特性的联合仿真研究

Co-simulation study on electromagnetic hysteresis characteristics of highspeed on-off valve

以某型电子限滑差速器中的高速开关阀为研究对象,介绍了高速开关阀的基本结构、工作原理、电磁滞后特性及其对阀芯动态过程的影响,并建立了高速开关阀整体的数学模型。在MATLAB/Simulink中搭建电、磁部分仿真模型,在AMESim中搭建机、液部分仿真模型。运用Simulink-AMESim联合仿真,研究了线圈匝数、驱动电压和初始气隙对电磁滞后特性的影响。结果表明:线圈匝数增加时,关闭/开启电磁滞后时间均增加;驱动电压增加时,关闭电磁滞后时间缩短,开启电磁滞后时间增加,且当驱动电压低于9. 1 V时,阀芯无法关闭;初始气隙增加时,总电磁滞后时间先延长后缩短。

Taking the highspeed on-off valve in a certain type of electronic limited slip differential as the research object,the basic structure,working principle of the highspeed on-off valve,the electromagnetic hysteresis characteristic and its influence on the dynamic process of the valve core were introduced. The mathematical model of the highspeed on-off valve was established. The simulation models of the electricity and magnetism were established in MATLAB/Simulink. The simulation models of the mechanical and hydraulic parts were established in AMESim. On this basis,using Simulink-AMESim models to simulate. The effects of coil turns,driving voltage and initial air gap on electromagnetic hysteresis characteristics were studied. The results show that the closing/opening electromagnetic lag time increases with the increase of coil turns,the closing electromagnetic lag time shortens and the opening electromagnetic lag time increases with the increase of driving voltage,and the valve core can not be closed when driving voltage is lower than 9. 1 V,and the total electromagnetic lag time first prolongs and then shortens with the increase of initial air gap.