The Application And Research Of Control System For Airborne Optoelectronic Pod

Airborne optoelectronic pods are high-technology products, which involve in optical, mechanical, microelectronics, automatic control and communication technology as well. Optoelectronic pods hang on the moving vehicle, and use optical sensors to achieve search. Scanned images and data are feedback in real-time to assist the pilots to complete the search or reconnaissance. Airborne optoelectronic pods have become one of important equipments in the field of aerospace. The research and development of pods have been paid much attention in the world.Based on the background of subject study, the control system of airborne optoelectronic pod is researched. The pod completes the search in day and night or in the case of low visibility by equipping with visible imager and infrared imager, and accurately determines the coordinates of targets. Taking the control system as research object, this paper analyzes the structure of control system and establishes the mathematical model. The changes in aircraft attitude, air wind resistance, vibration, load disturbance and other factors that affect the stability of the system, so the theory of the parameter self-tuning fuzzy-PID algorithm is mainly studied and the control system is simulated by using Matlab. Results show that parameter self-tuning fuzzy-PID control algorithm in airborne optoelectronic pod control system has better control effect. The algorithm has strong robustness, good dynamic performance and improves the control system stability.Based on this analysis, the servo control system is constituted by using ATmega128, driver module, DC servo motor and optical encoder. The OSD(On Screen Display) unit is designed to display working information of the control system. This paper has done the design of hardware circuit and software program. Finally, the control system has been tested, and the experiment results show that the airborne pod has automatic scanning, measuring angle, superimposed character information and other features. Testing shows that the proposed method is validated. The subject study of pod has explored new ways to control technology for further research, and its research has theoretical and practical value.