Compliance regulation means of suspension clearance and control current of electromagnetic type maglev train

Abstract

The invention discloses a compliance adjusting method for a suspension clearance and control current of an electromagnetic magnetic suspension train. The invention induces a set point adjustor for a working point in a magnetic suspension control unit; the set point adjustor for the working point is internally provided with a control curve function; an input value is calculated according to the control curve function and then is output; the control curve function is designed by a specific method which can reduce the suspension clearance and simultaneously increase the control current when the suspension weight is increased, and the specific method can increase the suspension clearance and simultaneously reduce the control current when the suspension weight is reduced; but a total suspension force can just balance the weight of a suspension body and the suspension clearance can be monotonously changed with the change of the control current; therefore, the method of the invention can be more flexibly compromised on optimizing requirements so as to achieve a better property index.

Description

technical field [0001] The invention relates to a method and device for adjusting the levitation gap and control current of a maglev train. Background technique [0002] The electromagnetic maglev train uses a levitation magnet located under the track to attract the track to provide the magnetic force required for levitation. The suspension gap of the electromagnetic maglev train is actively controlled by the suspension control unit. The suspension control unit is mainly composed of a suspension magnet, a suspension controller, a power amplifier, etc. It provides a control current to the suspension magnet, so that under a certain suspension gap, the attractive force between the suspension magnet and the track is just equal to the weight of the car body. [0003] According to different application occasions and control objectives, there are usually two levitation control methods: one is the fixed gap control method, which means that the rated levitation gap remains unchanged...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: Aiming at the problem that the existing constant gap control method leads to a large change range of the control current, and the existing constant current control method leads to the problem that the allowable change range of the bearing weight is small, a new suspension suspension is proposed. adjustment method of gap and control current to overcome these two problems

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