Research On The Vibration Analysis And Testing Technology Of The Muzzle Of The Tank

Mechanical vibration of tank gun will be generated by the road surface excitation on tank move,and such vibration response will take a huge adverse impact on the firing accuracy of tank gun.Therefore it is of great significance that investigation on the law of tank gun vibration and its effective control methods,which can improve the tank hit accuracy.In this paper,taking a tank gun as the research object,and aiming at solving the problems existing at the present vibration test of tank gun barrel,the artillery vibration during tank driving were Analyzed,a wireless measure method of muzzle vibration were explored by comprehensive utilization of modern measure technology,driving dynamics,multi-body system dynamics,mechanical vibration,control theory,design of gun,and other theories and methods.The main contents of this paper are as follows:In order to measure the signal of muzzle vibration on tank move,and to reduce the muzzle vibration effectively,the overall design of the muzzle vibration testing system and stabilizer control system was conducted.The research purpose and function requirements were determined for the vibration testing system and stabilizer control system.Based on the analysis of vibration test principle and technique,combined with the characteristics and test requirements of muzzle vibration,a design scheme of muzzle vibration based on wireless test technology is proposed.The working principle of tank stabilizer is analyzed.The control model of tank vertical and horizontal stability system is expounded.Using the angular velocity and angle of the muzzle as the feedback signal of the control system,a design scheme of tank vertical stability system is proposed.Taking the tank as the research object,the mathematic model of pavement spectrum was established by the harmonic superposition method.The random pavement spectrum of different pavement grades was obtained by numerical calculation.Considering the elastic deformation of tank gun barrel,a rigid-flexible multi-body system dynamic model was established by using multi-body dynamics theory and RecurDyn software.The numerical simulation considers a variety of working conditions such as the typical road surface of the tank and different traveling speeds.The displacement of vibration angle of cradle trunnion and muzzle under different working conditions was obtained by the numerical simulation.Comparative analysis is given.Spectral characteristics of the muzzle vibration angle signal were obtained by spectrum analysis,which provided the basis for designing the muzzle vibration test device.According to the proposed test program,a wireless device for measuring muzzle vibration is designed to measure the vibration angle and angular velocity of muzzle.Key diagonal speed gyro,signal conditioning module,the main control module,memory,wireless communication module,power supply module,and the installation of fixed structures were designed and analyzed.With the help of Altium Designer software,the circuit of the measuring device was designed.The power consumption of the main energy-consuming modules of the measuring device was analyzed.IAR Embedded Workbench was employed to design software of the test device.The data of static test verifies the rationality of the test device.A control method of tank gun vibration was proposed by using the signal of muzzle vibration angle of the test tank as the feedback signal of tank gun stability control.The simulation software MATLAB was used to establish the PID model of the muzzle vertical vibration control on tank move.Through the co-simulation of the control model and multi-body system dynamics model,the control effects of muzzle angle and cradle trunnion angle of different road surface spectrum and velocity as feedback signals were compared and analyzed.The feasibility of using gun muzzle vibration signal to control the stability of tank gun is verified.