초록 ▼

The air gap between the rail or rails and an electromagnetically levitated vehicle is optimally controlled with regard to the power or energy consumption. This result is achieved by a control employing two control channels. One control channel is constructed as a non-linear support or guide controll

The air gap between the rail or rails and an electromagnetically levitated vehicle is optimally controlled with regard to the power or energy consumption. This result is achieved by a control employing two control channels. One control channel is constructed as a non-linear support or guide controller for regulating or contolling the air gap width in response to disturbances of short duration. The other control channel is constructed to cause a reduction of the air gap width or rather of the rated air gap width for adapting of the air gap width to the spectrum and amplitude distribution of the disturbances to which the levitated vehicle is exposed. This type of control may be employed for the regulating of the air gap between the support magnets and the respective rail and also for controlling the air gap between the guide magnet and the respective rail to reduce the energy required for maintaining these air gaps at an optimally efficient width.

대표청구항 ▼

A method for optimally controlling the adaptation of an air gap between a magnet of an electromagnetically levitated vehicle and a rail on which the vehicle is travelling, to unknown disturbances with the aid of a closed loop control circuit, comprising the following steps: supplying to said closed

A method for optimally controlling the adaptation of an air gap between a magnet of an electromagnetically levitated vehicle and a rail on which the vehicle is travelling, to unknown disturbances with the aid of a closed loop control circuit, comprising the following steps: supplying to said closed loop control circuit a weighted acceleration signal representing said unknown disturbance, providing said closed loop control circuit with non-linear circuit means (4, 5) for limiting substantially those disturbances which occur for short time durations, but have high amplitudes, measuring an actual air gap representing signal value (S), forming a difference signal value (Do) between said actual air gap representing signal value and a rated air gap signal value (So), and supplying said difference signal value (Do) to a summing circuit (20) for increasing said rated air gap signal value (So) when said high amplitude disturbances occur, whereby said rated air gap value (So) is continuously changed with reference to said actual air gap representing signal value (S).