Virtual prototype modeling and simulation of rigid rotor system supported by active magnetic bearings in Simscape

In order to accelerate and simplify the design of the active magnet bearing (AMB) system, a virtual prototype model is constructed using the Simulink/Simscape toolbox for an AMBs-supported unbalanced rigid rotor with five degrees of freedom. With this model, rapid visual modeling and co-simulation of such a complex coupled system involving multiple physical domains are realized on a single computing platform. The simulation results show that this virtually developed AMBs-supported rotor system has good suspension characteristics and stable operation under random imbalance interference. With the notch filter, compensation of the imbalance at a fixed speed is realized, which also effectively reduced the exciting force transmitted to the base. The system robustness is improved and has a certain anti-interference ability in the axial direction after the controller parameters are automatically adjusted by the PID tuner. The proposed parametric modeling and simulation of an AMB system on Simscape can be used to easily and quickly modify the structural parameters and control parameters of a virtual prototype, and further analyze the dynamic characteristics of the system, so it provides a new solution for the structure design and control-algorithm development of the AMB systems based on the target experimental physical prototype.