High-precision accelerometer

Abstract

A high-precision accelerometer relates to the technical field of acceleration measurement and comprises a servo circuit board, a torquer stator assembly, a pendulum assembly and a shell. The shell isprovided with a cylindrical inner cavity, one end of the inner cavity is closed, and the other end of the inner cavity is opened to form an opening; the torquer stator assembly is located in the innercavity, and the torquer stator assembly and the opening are arranged at intervals to form a hanging meter structure; and the servo circuit board is positioned at the opening and is bonded and weldedwith the shell to seal the inner cavity. The high-precision accelerometer adopts multiple new technologies such as a unique hanging meter structure, a precise flexible supporting structure, a pendulumassembly mechanical structure, a high-sensitivity capacitive sensor and a feedback type integrated servo circuit, so the high-precision accelerometer has the characteristics of high product stability, high repeatability precision, small temperature coefficient, accurate temperature measurement, quick starting, strong environmental adaptability and the like, and is particularly suitable for high-precision systems with high requirements on accelerometer precision, temperature and starting time, such as inertial navigation, navigation attitude, platform stability, missile steering engine controland the like.

Description

technical field [0001] The invention relates to the technical field of acceleration measurement, in particular to a high-precision accelerometer. Background technique [0002] Quartz flexible accelerometer is a key component in the inertial system. Due to its high precision, high reliability and low power, the quartz flexible accelerometer is widely used in inertial navigation, attitude, platform stability, missile steering gear and drilling control and other higher precision systems. In recent years, with the development of high-precision weapons and equipment, many fields have put forward higher requirements for accelerometers, not only requiring quartz flexible accelerometers with high threshold and resolution accuracy, low power consumption, fast start-up, and high reliability. Moreover, the quartz flexible accelerometer is required to have stability, high repeatability accuracy, small temperature coefficient, strong environmental adaptability, and accurate temperature ...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic literature, papers and patents on quartz flexible accelerometers mainly focus on the sealing of the quartz flexible accelerometer structure, the analysis of reliability and life, the improvement of impact resistance, the simulation analysis of magnetic structure coupling, and the analysis of safe use boundaries. , temperature compensation, time-domain dynamic modeling and compensation, error compensation model and other local analysis aspects, there are currently no patents on the overall structure of high-precision quartz flexible accelerometers and precise temperature measurement

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