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Method for recognizing and modifying abnormal measurement data of vehicle micro-mechanical gyroscope

A micromechanical gyroscope and measurement data technology, which is applied in the direction of speed measurement, gyroscope/steering sensing equipment, measurement device, etc. due to the gyro effect. less problems

Active Publication Date: 2012-06-27
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

And these methods are purely from the perspective of data processing, without considering the system characteristics and error characteristics of MEMS gyroscopes
[0005] Through the above analysis, it can be seen that the existing methods for identifying abnormal measurement data of MEMS gyroscopes all have shortcomings of one kind or another.
At the same time, there are relatively few studies on the correction of abnormal measurement data of MEMS gyroscopes, and there are few research materials and academic papers available for reference.
In order to overcome the deficiencies of existing identification methods and correct abnormal measurement data, the present invention will provide a low-cost, high-efficiency method that can identify and correct multiple continuous abnormal measurement data of MEMS gyroscopes

Method used

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  • Method for recognizing and modifying abnormal measurement data of vehicle micro-mechanical gyroscope
  • Method for recognizing and modifying abnormal measurement data of vehicle micro-mechanical gyroscope
  • Method for recognizing and modifying abnormal measurement data of vehicle micro-mechanical gyroscope

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Embodiment 1

[0038] GPS or GLONASS satellite navigation system can provide positioning and navigation information quickly, accurately and all-weather, but in urban high-rise areas, boulevards, culverts and deep mountain canyons, the above-mentioned functions of GPS or GLONASS often fail. In order to cope with this situation, vehicle integrated navigation technology has developed rapidly in recent years. Dead Reckoning (DR) is an indispensable vehicle positioning technology in vehicle integrated navigation, and the data measured by gyroscope is one of its main information sources. At the same time, MEMS gyroscopes are widely used in engineering fields that need to measure three-dimensional angular velocity and acceleration data, so they are one of the key sensors in the field of automotive testing.

[0039] It can be seen from the above analysis that the gyroscope is a basic device in the field of vehicle integrated navigation and vehicle testing. In recent years, as a very important branc...

Embodiment 2

[0074] In order to test the actual effect of the method for identifying and correcting the abnormal measurement data of the vehicle-mounted micromechanical gyroscope proposed by the present invention, a real vehicle experiment was carried out. The basic situation of the experiment is described as follows:

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Abstract

The invention discloses a method for recognizing and modifying abnormal measurement data of a vehicle micro-mechanical gyroscope, which comprises the following steps of: firstly, selecting 400 continuous smooth data as samples in the original measurement data of the gyroscope, carrying out first difference and then zero equalization on the samples, and obtaining stable samples which are processed by the zero equalization; then, making an autocorrelation coefficient graph and a partial correlation coefficient graph of the stable samples which are processed by the zero equalization; confirming an auto-regressive moving-average model of the samples according to the distribution characteristics of autocorrelation coefficient and partial correlation coefficient of the samples as well as Akaike information criterion, and estimating the model parameters by a least-squares estimation method; after that, transforming the model of the stable samples processed by the zero equalization, and promoting the transformed model to the original measurement data; and finally, deforming the transformed model, and recognizing and modifying the abnormal measurement data of the micro-mechanical gyroscope by the deformed model.

Description

technical field [0001] The invention relates to a method for identifying and correcting abnormal measurement data of a vehicle-mounted micro-mechanical gyroscope. Causing adverse effects belongs to the field of car navigation and car testing. Background technique [0002] With the rapid development of cities and the increasingly complex traffic roads, there are more and more urban high-rise areas, boulevards and culverts. In order to cope with the situation that GPS or GLONASS satellite navigation systems often fail in these environments, vehicle integrated navigation has gained rapid development in recent years. development of. At the same time, with the rapid development of the transportation and automobile industry, the mileage of highways and the number of automobiles in the world are increasing rapidly, and road traffic accidents have gradually become a prominent problem in today's society. Timely detection and evaluation of automobile performance has become a guarante...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/00
Inventor 李旭陈伟
Owner SOUTHEAST UNIV
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