Control system for magnetic cushion vehicles

摘要

The invention relates to a control system for magnetic cushion vehicles for controlling the air gap between magnet and rail. A controller is provided for each magnet, which controller drives an actuator (6, 6') constructed as a magnetic current controller which can be rapidly switched on and off, via which actuator each magnet (4) is supplied with energy. In addition, the control system has an inner control circuit for feeding back a variable, assigned to the actual magnetic force (Fact), to the input (8) of the magnetic current controller (6). For example a flux sensor or a current sensor for the magnetic current is used to determine the magnetic force. The magnetic current controller has either two-point or three-point characteristics. With such a control system, the tracking characteristics of a magnetic cushion vehicle can be improved since in the event of deviations from the nominal state it is quickly returned into said state. <IMAGE>