High Precision, Mechanical And Electrical Vehicle Radar Platform Leveling Control System Research And Development,

In the information counterwork of modern war, radar, as a main sensor in the information system of both campaign sides, is always the preferred aim of attack in the early stage of battle. The vehicle-borne radar, which has the function of improving the mobile character of radar to increase its survivor probability, becomes the concernful trend of military scout.The auto-leveling control system plays an important role in the mobile character of vehicle-borne radar. Aiming at the shortcomings of traditional manual leveling system and hydraulic auto-leveling system, an electromechanical auto-leveling control system is presented. By using ATMEL ATmega8515 and ATmega162 as microcontroller, adopting highly accurate two-axis tilt sensor and digital AC servo-system as sensor and actuators, the propose of the control system is to improve the key factors of leveling system: the leveling time and leveling accuracy.Firstly, the statics model of vehicle-borne radar platform both in the horizontal and declining states are established. Then, the dynamic model of leg is built by using the methods of "linear graph" and "bond graph", and the function expressing the relationship of input and output is given. After that, a new leveling strategy is put forward based on the research of the normal leveling strategy.In the chapter of control system total design, the system design requirement, the control system framework, the research and development tools for the system and the software and hardware total design plan are introduced.In the chapter of control system hardware design, by using ATMEL ATmega8515 and ATmega162 microcontrollers, the circuits and PCBs design of the human-machine interface cell, control center cell and system interface cell are realized. At the end of this chapter, the anti-interference technology in the hardware design of control system is discussed.In the chapter of control system software design, by adopting C language, the driving programs of the human-machine interface cell and control center cell are designed. The vehicle performance in the time of starting and stop is improved by using the trigonometric function as the acceleration and deceleration algorithm, at the same time, the new circular leveling strategy is applied in the system to optimize the dynamic performance in the progress of auto-leveling. Aiming at the possibility of destroy of horizontal accuracy in the wild field or battlefield, the paper put forward the concept of "second leveling" and its actualizing method. At the end of this chapter, the anti-interference technology in the control system software design is discussed.At last, the control system is applied to a 19T vehicle-borne radar platform after the debugging of the hardware and software in the laboratory. The test is very successful and proves the leveling time and leveling accuracy is better than designer's expectation.The modeling method, leveling strategy and the hardware and software of system can be applied to diversified model of vehicle-borne radar platform, vehicle-borne missile platform and vehicle-borne laser platform, and can be also used in the industrial engineering such as static pile drive and bituminous-concrete pavers.