Device for improving stability of misalignment angle of accelerometer and installation method thereof
A technology of accelerometer and misalignment angle, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, and measuring devices, etc., to reduce the change of misalignment angle and ensure the use accuracy.
Pending Publication Date: 2021-11-23
XIAN FLIGHT SELF CONTROL INST OF AVIC
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[0004] In view of this, in order to solve the problem of acceleration caused by environmental stress during use and ensure that the accuracy of the accelerometer is not lost during use, the present invention provides a device for improving the misalignment angular stability of the accelerometer and its installation method
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[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practice...
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The invention discloses a device for improving the stability of a misalignment angle of an accelerometer and a method . The device comprises a connecting plate, two pins and a screw. The connecting plate is provided with a circular pin hole, a waist-shaped pin hole, a connecting plate mounting screw clearance hole and an accelerometer mounting hole. The connecting plate is fixed on a table body of the inertial navigation system through pins and screws, and after high and low temperature aging is carried out for not less than three times, the accelerometer is mounted on the connecting plate. According to the embodiment of the invention, the relative movement of the accelerometer relative to the table body of the inertial navigation system can be effectively eliminated, and the misalignment angle between structures is kept stable, so that the test precision of the inertial navigation system is improved.
Description
technical field [0001] The invention relates to the technical field of accelerometer applications, in particular to a device for improving the misalignment angle stability of an accelerometer and an installation method thereof. Background technique [0002] With the rapid development of aerospace technology, various platforms have higher and higher requirements for the accuracy of inertial navigation systems. As the core sensor of the inertial navigation system, the accelerometer's use accuracy directly determines the accuracy level of the navigation system. How to use the accelerometer better and reduce the accuracy loss of the accelerometer as much as possible has become a key issue in the use of the accelerometer. [0003] The applicant found through research that: the accelerometer is installed on the platform of the inertial navigation system during use. Due to thermal expansion coefficient mismatch and installation stress and other reasons, the accelerometer will be d...
Claims
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IPC IPC(8): G01C25/00G01P21/00
CPCG01C25/005G01P21/00Y02T90/00
Inventor 梁璞张习文魏渊张博文孙斌李鹏飞朱普辉
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC