Method for correcting offset of gyroscope by using inclinometer

A technology of inclinometer and gyroscope, which is applied to gyroscope/steering sensing equipment, gyro effect for speed measurement, instruments and other directions, can solve problems such as affecting the accuracy of gyroscope, and achieve low cost, strong operability, and simple and easy method. row effect

Inactive Publication Date: 2011-07-27
SHANGHAI NEW CENTURY ROBOT
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  • Claims
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Problems solved by technology

This greatly affects the accuracy of the gyroscope

Method used

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  • Method for correcting offset of gyroscope by using inclinometer
  • Method for correcting offset of gyroscope by using inclinometer

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Embodiment Construction

[0027] Combine the following figure 1 , a preferred embodiment of the present invention is described in detail.

[0028] A method of correcting the bias of a gyroscope using an inclinometer, comprising the steps of:

[0029] Step 1, install several gyroscopes and several inclinometers, each installed inclinometer is equipped with a gyroscope in its corresponding single direction, the method provided by the invention is for a single direction, if the inclination angle of the inclinometer is the Y-axis direction, then relatively, the angular velocity direction output by the gyroscope corresponding to the inclinometer is also the Y-axis direction;

[0030] Step 2. Continuously sample the inclination angle θ of the inclinometer in a single direction and the angular velocity value ω output by the gyroscope within the unit time Δt s , the subscript S after ω is the abbreviation of the number of samples, not the number of gyroscopes. This method is aimed at a gyroscope and an incli...

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Abstract

The invention discloses a method for correcting offset of a gyroscope by using an inclinometer. The method comprises the following steps of: calculating a zero drift value of the gyroscope through sampled data of the inclinometer and the gyroscope; and saving the zero drift value and substituting the zero drift value into a formula as a parameter to solve a final angular velocity value of the gyroscope. Since the zero drift value as the parameter is constant, the offset problem of the gyroscope is corrected and the output accuracy of the gyroscope is improved. Compared with the prior art, the invention has the advantages that: the method provided by the invention is simple and practicable and has extremely high operability; only a couple of gyroscopes or inclinometers are required to be added in order to improve the output accuracy of the gyroscope by using the method, so that the method is low in cost; and the method has an extremely strong theoretical basis as support, so that the influence of the zero drift value of the gyroscope can be substantially overcome.

Description

technical field [0001] The invention relates to a method for correcting the bias of a gyroscope, in particular to a method for correcting the bias of a gyroscope by using an inclinometer. Background technique [0002] Gyroscope is an instrument that can accurately determine the orientation of moving objects. It is an inertial navigation instrument widely used in modern aviation, navigation, aerospace and national defense industries. Its development is of great importance to a country's industry, national defense and other high-tech development is of great strategic importance. [0003] In recent years, with the development of MEMS (Micro-electromechanical Systems) technology, the research and development of MEMS gyroscopes has received extensive attention. MEMS gyroscopes have the advantages of small size, light weight, good reliability, and easy system integration, and have a wide range of applications. However, the accuracy of the MEMS gyroscope is not very high at prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/00
Inventor 李玺华
Owner SHANGHAI NEW CENTURY ROBOT
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