Physical Simulation Of Micro-nano Satellite's Photoelectric Tracking By Reaction Wheel

Under the background that space-based detection equipment plays an increasingly important role in space situational awareness,based on the concept of integrated satellite design,combined with the characteristics of micro-nano satellite maneuverability and flexibility,it is possible to drive the attitude maneuvering of the satellite body by using reaction wheel as the actuator to realize the photoelectric detection equipment to complete target tracking.The tracking and aiming method proposed in this paper is a new type of space tracking and aiming method,which has certain exploratory value and academic and practical application value.In order to verify the feasibility of using reaction flywheel as actuator to accomplish satellite attitude maneuver and realize the tracking and aiming function,this paper designs a micro-nano satellite photoelectric tracking physical simulation system based on single-axis air-bearing platform.The main work of this paper is as follows: 1)According to the task requirements,the structure design of the physical simulation system for micro-nano satellite photoelectric tracking is completed.2)Firstly,the models of reaction wheel and micro-nano satellite optoelectronic tracking physical simulation system are completed in turn.Secondly,in order to improve the performance of physical simulation system,the disturbance torques of reaction wheel and air-bearing platform are analyzed respectively.Finally,the system noise of micro-nano satellite optoelectronic tracking physical simulation system is analyzed and solved accordingly.Scheme.3)Firstly,aiming at the problem of asymmetry of disturbance moment and acceleration and deceleration time constant of reaction wheel,a control strategy of reaction wheel is designed,which combines gain scheduling and moment compensation.Secondly,the control system of micro-nano satellite photoelectric tracking physical simulation system is designed by using double closed-loop-speed feed-forward control structure.Finally,the control system of reaction wheel is completed.Computer simulation and analysis of physical simulation control system for micro and nano satellites.4)The hardware composition of the physical simulation system for micro-nano satellite photoelectric tracking is described in detail,and the design ideas of man-machine interface,control algorithm program and filtering algorithm program of the host computer are analyzed,and the corresponding program design flow chart is given.5)In order to verify the validity of the design,the corresponding experiments are completed and the experimental results are analyzed.The experimental results show that it is feasible to use the reaction wheel used to stabilize attitude as the actuator of the spaceborne photoelectric tracking system in order to realize the tracking and aiming function.