A levitation control method for an electromagnetic constant conduction low-speed maglev train

Abstract

The invention discloses a suspension control method of an electromagnetic constant conduct low-speed magnetic-levitation train. The method comprises the steps: respectively obtaining an existing suspension gap between an end A and an end B of each suspension module, existing speed and existing virtual flux; respectively taking the existing suspension gaps between the ends A and B of the suspension modules and the existing speed as outer ring feedback quantity, and calculating expected virtual fluxes between the ends A and B of the suspension modules by the combination of the set suspension gaps; respectively taking the existing suspension gaps between the ends A and ends B of the suspension modules as inner ring feedback quantity, and calculating controlled quantity signals of the ends A and B of the suspension modules by the combination of the expected virtual fluxes between the ends A and B of the suspension modules, so as to realize the stable suspension of the ends A and B of the suspension modules. According to the suspension control method provided by the invention, a nonlinear coupling relationship among suspension force, suspension current and suspension gaps can be prevented, the inherent defects based on the inner ring control method of current can be overcome, the tracking performance and robust performance of the suspension system can be improved, a hardware sensor is not needed, the implementation cost is low, and the reliability is high.

Description

technical field [0001] The invention relates to a levitation control technology for a maglev train, in particular to a levitation control method for a low-speed maglev train based on virtual magnetic flux feedback and an electromagnetic type constant conduction (ElectroMagneticSuspension, EMS for short). Background technique [0002] Electromagnetic Suspension (EMS for short) low-speed maglev train is a new type of vehicle that relies on the attraction between the electromagnet installed on the train and the track to make the train suspend on the track. , No pollution and other advantages have won more and more attention. The electromagnet and track of the EMS low-speed maglev train constitute the suspension system of the train. This system is an unstable system, and the stable suspension of the train can only be realized through feedback control. The suspension performance mainly depends on the suspension control method. The key to the suspension control method is to desi...

AI Technical Summary

Problems solved by technology

However, in the traditional suspension system design, the suspension control board uses the fast current loop as the inner loop and the gap ring as the outer loop, so it is difficult to overcome the nonlinear coupling relationship among the suspension force, suspension gap, and current. Influenced by the suspension system, the parameter range of the suspension system is small, the stability desire is poor, and it is difficult to effectively balance the tracking performance and the robust performance

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