Precision correction method and system for magnetic levitation train traction system position control ring

A traction system, maglev train technology, applied in the direction of signal indicators, electric vehicles, vehicle components, etc. on the vehicle, can solve the problem of high price, and achieve the effect of low delay, high bandwidth, and QOS to ensure high-speed moving characteristics

Active Publication Date: 2019-08-23
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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Problems solved by technology

In addition, the current 38G wireless network at home and abroad is a proprietary wireless communication technology, and the products are rarely used in the mature rail transit field and are expensive

Method used

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Embodiment Construction

[0038] A method for correcting the accuracy of a position control loop of a traction system of a maglev train, comprising:

[0039] Step A1, use the Beidou system and / or GPS system to synchronize the time of the speed measurement system, signal system and traction system, and add time stamp information. Eliminate the influence of transmission cycle delay and jitter on position positioning information, and meet the traction requirements of medium and high-speed maglev trains.

[0040] In step A, the speed measuring system collects information related to the position of the train. The position-related information includes train speed, magnetic pole phase angle, and train absolute position.

[0041] In step B, the speed measurement system sends the collected location-related information to the traction system through the signal system.

[0042] Step C, the traction system performs closed-loop control on the position of the train according to the position-related information. T...

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Abstract

The invention discloses a precision correction method and system for a magnetic levitation train traction system position control ring. The precision correction method comprises the steps that A, a speed measuring system collects position related information of a train; B, the position related information is sent to a traction system through a signal system; and C, the traction system carries outclosed-loop control over the position of the train according to the position related information. The method further comprises the step A1 before the step A. Time is checked for the speed measuring system, the signal system and the traction system, and timestamp information is increased. According to the method and the system, when the time is checked for the speed measuring system, the signal system and the traction system, the timestamp information is increased, the influence of delay and periodical random shaking is avoided, and the requirement for traction control of the medium and high speed magnetic levitation train is met. By the adoption of mature and cheap 4G-LTE wireless communication, the method has the characteristics of high bandwidth, low delay, wide coverage, QOS ensuring and high-speed moving. The method for improving the precision of medium and high speed magnetic levitation pole phase angles is simple and practical, and has a good project application prospect.

Description

technical field [0001] The invention belongs to the technical field of speed measurement and positioning of maglev trains, and in particular relates to an accuracy correction method and system for a position control loop of a traction system of a maglev train. Background technique [0002] At present, the maglev high-speed maglev trains (hereinafter referred to as high-speed maglev trains) that meet the requirements of "constant magnetic attraction" adopt linear synchronous motors for traction. The mover of the synchronous motor is integrated with the levitation electromagnet, while the stator is installed under the track three-phase winding. According to the working principle of the synchronous motor, only when the winding magnetic field of the long stator is synchronized with the excitation magnetic field, a constant traction force can be produced. Therefore, position detection of high-speed maglev trains is the key to traction control. [0003] The traction system of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L25/02
CPCB61L25/021B61L25/026B61L2210/04B61L25/025B61L15/0027B61L15/0018H04W84/042
Inventor 李晓春李林黄小丽宋丽伟杨颖佟来生罗华军
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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