Abstract
To make the superconducting magnetically levitated transport (Maglev) system more attractive, it is important to enhance the ride comfort by controlling vibrations. We have reduced Maglev vibrations by controlling the secondary suspension between the car body and bogie. However, by only controlling secondary suspension, it is difficult to reduce vibrations for the relatively high characteristic vibration frequencies of primary suspension. Recently, we have directed our attention to primary suspension control using power collection coils of the distributed-type linear generator system, which we are testing as an on-board power source. Because this vibration control can apply damping directly to primary suspension, we consider it to be optimal for vibration reduction for high frequencies. Using a Maglev train model focusing on vertical motions, we describe the effectiveness of reducing vibrations using damping force control of the linear generator system for primary suspension and linear quadratic (LQ) control in the actuators for secondary suspension.
