The Study On Stability Of Levitation And Guidance Active Control In High-speed Maglev Train

There is a little gap between electro-magnet and railway in High-speed Maglev Train (EMS), and electro-magnet force is non-linear. The running stability is impacted by the disturbing. Some tests of Low-speed Maglev Train tell us there are some stability problems by the 1 -DOF active control solution. So the suspension stability is the most important in all stability demands for High-speed Maglev Train.To satisfy the stability requirements of dynamics and control system in High-speed Maglev Train, the 2-DOF active control solution of levitation and guidance was presented. With the collaborative platform based on ADAMS and MATLAB, the design methodology of LQG controllers is described for the single-rail orthogonal model to be levitated and guided automatically. Then the High-speed orthogonal model simulates. In the 300Km/h running simulation of single-levitation-bogie dynamical model in the round railway, the active controllers' robustness are validated synthetically. And we know the 2-DOF active control solution can keep the High-speed Maglev Train stability.In High-speed Maglev Train the stability is impacted by the system rigidity, the non-configuration disturbing and the intercepting mode error of the controller. The system rigidity and the non-configuration disturbing are external, so for improving the running stability we only can choose 2-DOF active control solution, which can decrease the error about mode. The 2-DOF active control solution is a kind of new design plan, and it is very valuably and feasibly for the engineering.