Controller for a magnetic wheel of a high-speed magnetic levitation vehicle

摘要

The invention relates to a controller (4) for a magnet (1) of a magnetic wheel of a high-speed magnetic levitation vehicle in which a controller output voltage (UR) is generated from status variables and a magnet voltage for the magnet (1) to be controlled is generated from the said voltage (UR). In order to be able to design a simple controller both for high-speed journeys and for journeys at low speeds and when hovering, it is proposed according to the invention that the controller (4) be configured for a stable high-speed journey of the magnetic levitation vehicle with high control circuit amplification. A limiter (6) for the controller output voltage (UR) is connected to the controller (4) and generates a new controller voltage (U'R) as a function of the travel speed of the magnetic levitation vehicle and in the same sense as the said output voltage, the said controller voltage (U'R) limiting the maximum permissible control range for the magnet voltage (UM) when travelling slowly and when the magnetic levitation vehicle is in hovering mode. Although instabilities when travelling slowly and when hovering are accepted with such a control concept, the amplitudes which occur due to the limiting of the control range are only very small and tolerable so that, on the whole, the magnetic levitation vehicle behaves in a stable fashion even with these instabilities.