Application Of Complex Control Algorithm In Platform Stabilization Loop

The inertial navigation system (INS) has a close relationship with the development of navigation, aviation and spaceflight. The conventional platform stabilization loop is constructed by analogue electronic system, which is hard to design and control, so digital control is adopted as a new direction. And, the classical PID controller is not so good in precision, response speed, disturbance rejection. Under this background platform stabilization loop based on complex controller (Fuzzy-PID) is researched in this paper.Introduced the theory and components of stabilizing circuit, expatiated the functions in the inertial platform stabilizing circuits. Through the analysis of operation principle and physical structure, designed a mathematical model of un-mended system, and simplified the system with parameter of electromotor, obtained a standard control object, thus provided a foundation for designing Fuzzy-PID controller subsequently.The results of simulation show that the inertial platform stabilizing circuits can be designed with high response speed, strong anti-jamming and high accuracy. Compared with the classical PID control, and fuzzy control, the Fuzzy-PID controller designed here performances much better.In this paper, the software and hardware of digital platform stabilization loop is designed. The TMS320F2812, a product of Texas Instruments Inc., is chosen as the core chip of the digital control system. The design of the minimus system and hardware interface is emphasized in hardware design section. The design of Fuzzy-PID controller is emphasized in software design section.