Airborne Eo Stabilized Sighting System Simulation Analysis

The line-of-sight stabilization with high-accuracy is the chief specification and key technology of electro-optical stabilized sighting system. In this dissertation, combining the practical environment and using the stabilizing loop of inner gimbals as experiment object, the technology of line-of-sight stabilization with high-accuracy is simulated and analyzed, the chief factors that affect the accuracy of line-of-sight stabilization are analyzed.First, the advantages and shortages of a number of conventional stabilization methods are discussed, the importance of exploring new technologies for line-of-sight stabilization with high-accuracy is indicated, and the description of operational principle of stabilized sighting system is started with the basic concept of gyro-stabilized apparatus. Then, the operational principle and leading constitution of four-axis gyro-stabilized sighting system are described. The mathematical models of important parts are constructed and the stabilizing loop of inner gimbals is also designed On the basis of above analysis, combing the friction, angle disturbance, linearity disturbance and elasticity torque which present themselves in the practical environment, the stabilizing loop are simulated by the MATLAB. At last, the theoretical analysis of the chief factors affecting the accuracy of line-of-sight stabilization are given.The experiments results shows, on one hand, the theory that four-axis gyro-stabilized sighting system can get high accuracy of line-of-sight stabilization in the badly equipping environment is correct, on the other hand, the design thought adopted in the article is executable in engineering applications.