Techno Press
You logged in as. Techno Press

Smart Structures and Systems
  Volume 32, Number 2, August 2023 , pages 101-109
DOI: https://doi.org/10.12989/sss.2023.32.2.101
 


Piezoelectric 6-dimensional accelerometer cross coupling compensation algorithm based on two-stage calibration
Dengzhuo Zhang, Min Li, Tongbao Zhu, Lan Qin, Jingcheng Liu and Jun Liu

 
Abstract
    In order to improve the measurement accuracy of the 6-dimensional accelerometer, the cross coupling compensation method of the accelerometer needs to be studied. In this paper, the non-linear error caused by cross coupling of piezoelectric sixdimensional accelerometer is compensated online. The cross coupling filter is obtained by analyzing the cross coupling principle of a piezoelectric six-dimensional accelerometer. Linear and non-linear fitting methods are designed. A two-level calibration hybrid compensation algorithm is proposed. An experimental prototype of a piezoelectric six-dimensional accelerometer is fabricated. Calibration and test experiments of accelerometer were carried out. The measured results show that the average nonlinearity of the proposed algorithm is 2.2628% lower than that of the least square method, the solution time is 0.019382 seconds, and the proposed algorithm can realize the real-time measurement in six dimensions while improving the measurement accuracy. The proposed algorithm combines real-time and high precision. The research results provide theoretical and technical support for the calibration method and online compensation technology of the 6-dimensional accelerometer.
 
Key Words
    6-dimensional accelerometer; compensation algorithm; cross coupling; non-linearity; two-stage calibration
 
Address
The Key Laboratory of Optoelectronic Technology and Systems of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2025 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: admin@techno-press.com