Analysis for stable tracking torque of self propelled antiaircraft gun under high dynamic conditions

DOI:	10.11809/bqzbgcxb2024.02.013
Keywords:	self propelled antiaircraft gun; stable tracking; disturbance torque; eccentric torque; dynamics model; numerical simulation
Abstract:	A kinematics and dynamics model for the stabilization and tracking system of a self propelled antiaircraft(SPAA) gun was constructed based on Euler dynamics equation. The proposed model is used to study the relationship between the equivalent outputs of the servo motors and the dynamic load disturbance torque caused by mass eccentric structure during the stabilization and tracking process. Based on the attitude disturbance and translational velocity disturbance of the vehicle body, the dynamic characteristics of azimuth and elevation axes under different conditions of vehicle motion are simulated, and the factors affecting dynamic load disturbance torque are systematically analyzed. The simulated results show that the dynamic loads and output torques of azimuth and elevation axes are proportional to the acceleration of the vehicle when the gun is pointing steadily and the vehicle moves horizontally. When the vehicle body is in composite motion, the dynamic loads and output torques of azimuth and elevation axes increase with the increase of the velocity of the vehicle moving. When the antiaircraft gun tracks steadily during travel, compared to when the vehicle body only swings, the dynamic loads and output torques of azimuth and elevation axes increase significantly, and the effect of the dual axis dynamic loads on the output torques is more prominent. The results of the study provide a theoretical basis for the design of the pointing stabilizing tracking system for marching self propelled antiaircraft gun.
Issue:	Vol. 45 No. 2 (2024)
Published:	2024-02-28
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