Water Hammer Model of Shock Absorber Throttle Slice

In allusion to easy invalidation of damping valve in vehicle shock absorber caused by the impact from the road surface, the importance of the study of damping valve water hammer pressure is presented. The physical model of damping valve with the circle throttle slice is established. The time for the throttle slice deformation is studied by using the finite software, and the laws that how the structure parameters affect the deformation time are obtained. Combining the theory of water hammer, the water hammer initial and boundary condition of the damping valve is deduced, and the water hammer model of throttle slice is established. The analysis of simulation results indicates that the water hammer pressure amplitude and the amount of water hammer oscillation period can be reduced and the dependability of the valve can be enhanced by modifying the structure parameters and aperture width between slice and valve body.     

基于DOM方式下的MIC总线技术及其应用

MIC总线是一种在恶劣环境下具有高度可靠性的现场数据总线,在军事领域有着广阔的应用前景。文章着眼于MIC总线在国内的应用推广,简要的介绍了MIC总线的结构和特点,阐述了MIC总线常见的几种工作模式。结合MIC总线在实际工程项目中应用,重点分析了DOM方式下MIC工作原理,深入地剖析MIC总线在DOM方式下的通讯时序。在此基础上,提出了一种切实可行的应用方案,并完成了硬件和软件的设计。通过软件的方法,解决了MIC和单片机之间通讯的冲突仲裁问题。