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Method for detecting sensor board of linear motor traction system

A technology of linear motors and traction systems, applied in radio wave measurement systems, measurement devices, electrical/magnetic exploration, etc., to achieve good real-time performance, accurate response, and accurate observation of rotor flux linkage

Active Publication Date: 2014-07-02
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above existing technologies judge the condition of the induction plate by observing the rotor flux linkage.

Method used

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  • Method for detecting sensor board of linear motor traction system
  • Method for detecting sensor board of linear motor traction system
  • Method for detecting sensor board of linear motor traction system

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0049] A linear motor traction system without induction plate detection method, starting from the control system, establishes the rotor flux observer model of the linear motor, and detects and judges whether there is an induction plate area by observing the change of the linear motor rotor flux linkage. It does not need to add any hardware, it is integrated with the control system, and has good real-time performance. At the same time, because the induction plate is strongly related to the rotor flux linkage of the linear motor, the accuracy is also very high.

[0050] Establish the flux equation and voltage equation of the linear motor:

[0051]

[0052] Establish the state equation with rotor flux and stator flux as state variables:

[0053]

[0054] The observer model of the rotor flux linkage is established according to the observer principle:...

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Abstract

The invention discloses a method for detecting a sensor board of a linear motor traction system. A flux observer model for observing a linear motor rotor is set up, a flux reference value is set, and if a sensor board area exists is judged and detected by observing changes of a flux of the linear motor rotor and comparing the relationship between the amplitude of the flux of the linear motor rotor and the flux reference value. The rotor flux observer and a control system are integrated. If the amplitude of the flux of the rotor is larger than 80% of the flux reference value, the sensor board is normal; if the amplitude of the flux of the rotor is smaller than 80% and larger than 50% of the flux reference value, the sensor board is partially lost; if the amplitude of the flux of the rotor is smaller than 50% of the flux reference value, the sensor board is lost. The condition of the sensor board is judged by observing the flux of the rotor, any hardware is not needed, a non-sensor-board area can be accurately detected, the real-time performance of results is good, observation of the flux of the rotor is accurate, and the condition of the sensor board can be accurately reflected.

Description

technical field [0001] The invention relates to the technical field of linear motor traction systems, in particular to a detection method for a linear motor traction system without an induction plate. Background technique [0002] The linear motor traction system has the characteristics of good dynamic performance, strong climbing ability, low noise, low vibration and low engineering cost, and has become a new generation of rail traction system technology. At present, the linear motors for track traction mostly adopt the form of short primary and long secondary, and the induction plate laid on the track forms the secondary of the linear motor. Due to the ground layout and construction reasons, it is impossible to lay induction plates in areas such as outbound and turnouts. , forming the non-inductive plate area of ​​the linear motor traction system. In the non-inductive plate area, it is equivalent to the linear motor without a secondary. Therefore, when the high-performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/08
Inventor 刘可安尚敬梅文庆刘勇甘韦韦
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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