Method for determining buffer gap of large impact attenuation buffering device of inertial navigation system

Abstract

The invention discloses a method for determining a buffer gap of a large impact attenuation buffering device of an inertial navigation system. The method comprises the following steps of S1, carrying out six-direction rigidity damping model construction and physical parameter definition on each rubber shock absorber; S2, constructing an inertial coordinate system, an inertial navigation coordinate system and a shock absorber coordinate system, and defining relationships among the coordinate systems; S3, defining system physical parameters, kinematics parameters, the buffer gap and external excitation; S4, constructing a six-degree-of-freedom kinetic equation of the buffering device; and S5, calculating according to external impact and obtaining y-direction and z-direction buffer gap design quantities Ly and Lz based on the design margin. The method for determining the buffer gap of the large impact attenuation buffering device of the inertial navigation system is simple and convenient to calculate, easy to operate and high in result accuracy and reliability, the use safety of the large impact attenuation buffer device of the inertial navigation system can be effectively guaranteed, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of an inertial navigation system attenuation large impact buffer device, in particular to a method for determining the buffer gap of an inertial navigation system attenuation large impact buffer device. Background technique [0002] The artillery is installed on the barrel with an inertial navigation system, and the impact force is very large when the shell is fired, which is far beyond the tolerance range of the inertial navigation system. Therefore, a buffer device that can attenuate the large impact must be used to attenuate the impact level to the inertial navigation system. range. Considering the requirements of attenuating large impact and the limitation of space volume, the published patent CN20248550U provides a buffer device for inertial navigation system attenuating large impact, which has the requirements of small impact response and sufficient impact displacement space, and has been widely used i...

AI Technical Summary

Problems solved by technology

If the buffer gap reserved in the structural design is smaller than the actual buffer gap, it will cause the inertial navigation system to collide with the buffer device during the firing of shells, resulting in serious damage to the inertial navigation system; if the buffer gap reserved in the structural design is larger than the actual buffer gap The gap will lead to an increase in the overall size of the buffer device, which cannot meet the requirements of miniaturization

Images