The Research Of Vane Magnetorheological Brake And Control Simulation For Satellite Solar Wing

Since the satellite solar wing mechanism has no air resistance when it is deployed in space,it will have a greater impact on the satellite and solar wing when locked.The generated vibration is difficult to eliminate in a weakly damped environment,which affects the attitude angle of the satellite and the stability of the solar wing.The magnetorheological brake can be used to control the deployment process of the solar wing.With the goal of reducing the locking shock,this paper studies the deployment process of the solar wing,designs a blade-type magnetorheological brake installed in the solar wing system,conducts steady-state and transient magnetic field finite element analysis,and establishes the brake System model,develop control strategy of solar wing deployment,establish virtual prototype for co-simulation.The details are as follows:Based on the Lagrangian equation,the dynamic equation of a typical solar wing folding and spreading mechanism is established,and the undamped deployment process is calculated for a certain type of satellite solar wing.The dynamic software Adams is used to simulate the same model to verify the correctness of the theoretical model.Research on the layout of the brake,and provide a basis for the design of the brake through parametric analysis.Aiming at the goal of braking torque,design a blade-type magnetorheological brake for solar wing system and a mechanism to fix it in the solar wing;propose a parameter determination strategy for this type of brake,complete the structure and magnetic circuit design,and proceed Magnetic circuit verification.Perform steady-state magnetic field analysis on the magnetorheological brake to obtain the electromagnetic characteristics of the brake structure,verify the rationality of the structure design,and provide a basis for establishing the damping torque model;obtain the response time and transfer function of the system through transient magnetic field analysis,and design advance correction The circuit improves the time lag phenomenon,and finally obtains an accurate braking torque model of the brake based on polynomial fitting and integration,establishes a system model considering the effect of time lag,and evaluates the model’s following situation.With the goal of optimizing the deployment process,the two braking schemes of rapid braking and platform braking are designed,and the controller is designed based on the BangBang control strategy;a virtual prototype of the solar wing system is established and a joint simulation platform is built,and the two braking schemes are carried out.The simulation and the platform braking scheme with better control effect are used to compensate the error angle.Finally,the passive control is simulated,and the effects of no control,passive control and semi-active control are compared to verify the superiority of the magnetorheological brake control.