Quantitative description method for vibration state of artillery on mobile shooting platform

Abstract

The invention discloses a quantitative description method for a vibration state of an artillery on a mobile shooting platform. The method comprises the following steps: building a dynamical model of an artillery on a mobile shooting platform, determining working conditions of the artillery, selecting a fixed point A on the artillery, obtaining sample points of a vibration state of the artillery on the mobile shooting platform under the working conditions through dynamics simulation, and forming a sample space; visualizing data in the sample space of the vibration state of the artillery under the working conditions by adopting a histogram; and fitting the histogram to obtain a probability distribution function of the vibration state of the fixed point A to describe a statistical law of artillery vibration. According to the method, artillery vibration on a mobile shooting platform is regarded as an ergodic stationary stochastic process, and statistical laws and characteristics of the artillery vibration on the mobile shooting platform are described by utilizing a statistical theory, so that the artillery vibration characteristics on the mobile shooting platform can be accurately and quantitatively described, and a reliable basis can be provided for the problems of artillery vibration state influence factor analysis, shooting precision evaluation and the like.

Description

technical field [0001] The invention relates to the field of cannon vibration analysis, in particular to a method for quantitatively describing the vibration state of a cannon on a mobile shooting platform. Background technique [0002] The vibration of the gun muzzle is an important factor affecting the shooting accuracy. However, due to the influence of external random excitations such as road surface roughness or ship motion, and nonlinear factors such as gaps and flexibility in the artillery system, mobile shooting platforms such as vehicle-mounted guns and naval guns The vibration of the artillery often appears as a strong random phenomenon. Taking the vehicle-mounted gun as an example, even under the same conditions, such as the same driving speed, the same driving time, etc., the vibration of the muzzle is not completely determined. Existing research, such as "Research on the Nonlinear Vibration Dynamics of the Artillery During the Movement of the Tank under the Cond...

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Problems solved by technology

[0003] Purpose of the invention: In order to solve the problem that the random vibration state of the artillery on the mobile shooting platform cannot be accurately and quantitatively described, and limit the analysis of the factors affecting the vibration state of the artillery and the evaluation of shooting accuracy, etc., to provide a quantitative description method for the vibration state of the artillery on the mobile shooting platform

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