Angular velocity measurement method for wide-range angular velocity sensor
A technology of an angular velocity sensor and a measurement method, which is applied in the field of measurement and control, can solve the problem of low range of the gyroscope, and achieve the effect of solving the problem of small range and strong practicability
Active Publication Date: 2018-10-12
SOUTHEAST UNIV
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[0003] Purpose of the invention: In view of the problems in the prior art, provide a large-range angular velocity sensor that overcomes the problem of too low range of the gyroscope in the existing angular velocity measurement method based on inertial devices by rationally designing the distribution mode of the accelerometer and the angular velocity calculation method angular velocity measurement method
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[0031] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments described in the present invention are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts all fall within the protection scope of the present invention.
[0032] In order to solve the angular velocity measurement problem of high-speed rotating carrier, the MEMS accelerometer with larger range and higher precision is considered to replace the existing gyroscope measurement solution, and an angular velocity sensor suitable for high-speed rotating carrier is designed. When using an accelerometer to measure angular velocity, the distribution and calculation methods of the accelerometer directly affect the measurement accuracy of the angular velocity sensor and the re...
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The invention discloses an angular velocity measurement method for a wide-range angular velocity sensor. The method comprises the following steps: in a plane of the angular velocity sensor, three single shaft acceleration meters are distributed with an equidistant sector with 120 DEG, the sensitive shafts of three acceleration meters directs a geometric centre of the angular velocity sensor, underthe prerequisite that a distance between three acceleration meters to the geometric centre of the angular velocity sensor is known, a mathematical relationship of linear acceleration of the angular velocity sensor, the angular velocity by winding the geometric centre of the angular velocity sensor and perpendicular to a rotation sensitive shaft of the angular velocity sensor, and three acceleration meters output in the angular velocity sensor is constructed, the angular velocity is resolved based on the above mathematical relationship, by taking regard of installation, installation error is possibly existed between the rotation sensitive shaft of the angular velocity sensor and a detected carrier, and an angular velocity resolving method under installation error is established. The methodsolves the angular velocity measurement problem of the free carrier under high speed rotation.
Description
technical field [0001] The invention belongs to the technical field of measurement and control, and in particular relates to an angular velocity measurement method of a large-range angular velocity sensor. Background technique [0002] The angular velocity measurement of the rotating carrier is of great significance for the dynamic estimation and attitude calculation of the carrier. At present, there are two commonly used angular velocity measurement methods, which are based on encoder measurement and inertial device measurement. Among them, the encoder-based measurement method can be divided into photoelectric type, Hall type, etc. according to different measurement principles. Its advantages lie in high measurement accuracy and good stability. However, since this measurement method needs to fix and install the rotating end and the non-rotating end of the encoder separately, and depends on a certain mechanical structure, the use of this method is subject to many restrictio...
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Login to View More IPC IPC(8): G01C19/02
CPCG01P9/02
Inventor 王东孙利成何倩张为公
Owner SOUTHEAST UNIV