Optimization Design of the Range and Quadratic Term of Quartz Flexural Accelerometer

ZHANG Yuhang; LI Siyuan; WANG Wenyi; LIU Jiawei

doi:10.15892/j.cnki.djzdxb.2026.01.008

Journal of Projectiles, Rockets, Missiles and Guidance >

2026 , Vol. 46 >Issue 1: 77 - 87

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2026.01.008

Optimization Design of the Range and Quadratic Term of Quartz Flexural Accelerometer

ZHANG Yuhang ,
LI Siyuan ^,^* ,
WANG Wenyi ,
LIU Jiawei

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Xi'an Aerospace Precision Electromechanical Institute, Xi'an 710000, Shaanxi, China

Received date: 2025-12-15

Online published: 2026-03-09

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Abstract

In response to the application requirements of inertial navigation systems for quartz flexible accelerometers with a large range and high dynamic flight accuracy, a new structure for the pendulum assembly of quartz flexible accelerometer is proposed to enhance the range and second-order coefficient of accelerometer. A mathematical model of the designed pendulum assembly is established to derive the scale factor of the designed accelerometer. The design range of accelerometer is theoretically calculated based on the load capacity of servo circuit. The optimization method for the second-order coefficient of the accelerometer is analyzed, and an optimization scheme for the second-order coefficient is provided. Through numerical simulations, it is verified that the deflection and stress of the designed pendulum assembly under full-scale conditions meet the design requirements. Experimental results show that the quartz flexible accelerometer achieves a range of 110g and a second-order coefficient better than 5 μg/g², thereby improving the dynamic application capability of quartz flexible accelerometers in inertial navigation systems.

Key words： flight accuracy; pendulum assembly; large range; second-order coefficient; inertial navigation system

Cite this article

ZHANG Yuhang , LI Siyuan , WANG Wenyi , LIU Jiawei . Optimization Design of the Range and Quadratic Term of Quartz Flexural Accelerometer[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2026 , 46(1) : 77 -87 . DOI: 10.15892/j.cnki.djzdxb.2026.01.008

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