Abstract：To obtain the vibration characteristic of launcher guider muzzle of Multiple Launch Rocket System(MRLS) exactly in the firing process, The vibration characteristic of launcher guider muzzle of MRLS was researched. The dynamic model of MRLS and the simulation system was established by using transfer matrix method of multibody system and the theory of firing dynamics, The model were validated by the mode test results of the original vibration characteristic of MLRS; The time history of vibration signals at launch guider muzzle in the firing process was obtained by the simulation system, by using the technology of discrete Fourier transform(DFT), the frequency characteristic of displacement, velocity and acceleration at launch guider muzzle in the firing process was obtained. Basing on this, the Elliptic filter was designed, and by the comparison of the acceleration signal at the launcher guider muzzle with the filter and without, the context researched is useful and important was proved, and the important reference value for the movement signals of the launcher guider of MRLS measured and controlled in the firing process was offered.
2012, Vol. 31 
