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Beidou and inertia navigation-based combined speed measurement positioning technology

A technology of inertial navigation and positioning technology, which is applied in the field of real-time speed measurement and continuous positioning technology, and can solve problems such as insufficient detection accuracy, inability to obtain real-time speed, and single signal source.

Pending Publication Date: 2019-01-15
CENT SOUTH UNIV +1
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the detection accuracy of the magnetic levitation speed measurement

Method used

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  • Beidou and inertia navigation-based combined speed measurement positioning technology
  • Beidou and inertia navigation-based combined speed measurement positioning technology
  • Beidou and inertia navigation-based combined speed measurement positioning technology

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Embodiment Construction

[0012] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the implementation shown and described in the accompanying drawings is only exemplary, intended to illustrate the principles and methods of the present invention, rather than limit the scope of the present invention.

[0013] The present invention relates to a filtering method for medium and high-speed magnetic levitation speed measurement and positioning. figure 1 The principle model of the integrated navigation system according to the present invention is shown. From the figure, we need to build up the speed model first, and the speed model is as follows:

[0014] By analyzing the running speed of the train and sampling the site, we can initially build a model and formula for the speed change of the maglev train during operation. As shown in the following formula:

[0015] v=t(t<60), (3.3.1)

[0016] v=60(60≤t<120),...

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Abstract

The invention discloses a Beidou and inertia navigation-based combined speed measurement positioning technology and aims to solve the problems that a method of a magnetic suspension speed measurementpositioning system in the prior art is not enough in detection accuracy and excessively much in noise and accurate real-time speed cannot be obtained. By the Beidou and inertia navigation-based combined speed measurement positioning technology, real-time speed measurement depended by non-stator tooth groove applied to medium- and high-speed magnetic suspension and research of a continuous positioning technology are completed, the effects of real-time speed measurement depended by non-stator tooth groove applied to medium- and high-speed magnetic suspension and the continuous positioning technology are relatively good, an important significance is provided for domestic magnetic suspension construction, and the accuracy is relatively improved.

Description

technical field [0001] The invention relates to a real-time speed measurement and continuous positioning technology which is not dependent on stator cogging and is applied to medium and high-speed magnetic suspension. Background technique [0002] In recent years, my country's rail transit industry has developed rapidly, and maglev has become one of the key points and hot spots in the construction of many urban rail transit. The current speed measurement and positioning of maglev trains mainly adopt the following methods: [0003] 1. Induction stator magnetic pole speed measurement. Using the sensed stator magnetic pole signal source, the speed is calculated by the rising and falling edges of the signal when the speed is low, and the speed is calculated by counting and receiving pulses when the speed is high. [0004] 2. Absolute positioning by induction encoder. An inductive encoder signal source is installed at a certain distance along the track to achieve absolute posit...

Claims

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Application Information

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IPC IPC(8): G01S19/49G01S19/52
CPCG01S19/49G01S19/52
Inventor 王帅陈特放郭帅邯
Owner CENT SOUTH UNIV
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