Design Of Servo System To Shipborne Optical-Electronic Tracking Based On Fuzzy Control

Optical-electronic tracking servo system is an important part of thetracking device, the design of which has a direct impact on the performanceof the optical-electronic tracking device. Along with modern weapons andaircraft as the tracking target with faster and more mobile, dynamic responseof the optical-electronic tracking servo system has higher requirements; theshipborne optoelectronic tracking system is also subject to thecarrier-shaking in addition to the interference of the friction torque andparameter changes in nonlinear factors, which makes the servo systemrequirements anti-disturbance ability much high. Traditional servo systemcontroller board utilizing the structure of combination IPC with the boardand the classic PID control method can not meet the requirements.To solve the above problems, with the use of the visual axis gyroinertial stabilization method and the fuzzy PID control algorithm, the digitalservo system is designed based on TMS320F2812DSP. Firstly, according tothe performance of the optoelectronic tracking system, analyzing the generalscheme of the optoelectronic tracking system is to determine the architectureof the servo control system and to select main system components.Secondly,the mathematical model of the servo control system is designed, so that thecurrent loop and rate loop correction device is designed and the equivalentmodel of the digital stabilization loop and digital position loop are given.Then the fuzzy PID control algorithm is designed, which of superiority isverified by simulation compared with conventional control algorithm.Finally, in the hardware design section it includes the minimum systemcircuit as the core of the DSP processor and peripheral expansion of thecircuit, the processor and the interface of the rotary transformer and the rategyro and the amount of control output circuit and so on. In the softwaredesign section the main program module process is given, including program modules of the DSP system initialization, serial communicationinterface module (SCI), the timer interrupt and fuzzy PID control algorithm.Satisfactory results are achieved through the debugger.The topics introduce the fuzzy control theory to the design of shipborneoptical tracking servo system and make it application in practicalengineering. It not only has theory and application of value on the overallstructure and design ideas of the servo system, but also plays an importantrole to improve the shipborne electro-optical tracking system performance.