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Updated: May 5, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

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Installation Error Calibration Method for Redundant MEMS-IMU MWD.

Yin Qing¹, Lu Wang¹, Yu Zheng¹

¹School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China.

|April 26, 2025

Summary

This study introduces a new 45° inclined calibration method for redundant Micro-Electro-Mechanical Systems Inertial Measurement Units (MEMS-IMUs) used in Measurement While Drilling (MWD). The method significantly reduces installation errors and improves drill string attitude measurement accuracy.

Keywords:

IMU-MEMS MWD error calibration installation error redundancy technology

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Published on: May 26, 2020

Area of Science:

Geophysics
Sensor Technology
Drilling Engineering

Background:

Measurement While Drilling (MWD) relies on redundant Micro-Electro-Mechanical Systems Inertial Measurement Units (MEMS-IMUs) for accurate drill string attitude determination.
Installation errors in MEMS-IMUs degrade measurement precision, necessitating effective calibration techniques.
Current horizontal plane calibration methods suffer from low signal-to-noise ratios, limiting accuracy.

Purpose of the Study:

To develop an improved calibration method for redundant MEMS-IMUs in MWD systems.
To address the limitations of conventional horizontal calibration methods by enhancing signal quality and reducing noise.
To improve the accuracy of drill string attitude measurements and wellbore trajectory control.

Main Methods:

Proposed a novel 45°-inclined six-position calibration method utilizing a hexagonal prism redundant structure.
Analyzed compensation matrices and accelerometer measurement errors to inform the new calibration approach.
Validated the method through simulations and laboratory experiments.

Main Results:

The 45° inclined method reduced installation errors by 40.4% compared to conventional techniques.
Experimental results showed significant reductions in absolute measurement errors: 83% for the x-axis and 68% for the y-axis.
Sensor accuracy after compensation improved by over 25%, enhancing the reliability of MWD systems.

Conclusions:

The proposed 45° inclined calibration method effectively mitigates installation errors in redundant MEMS-IMUs for MWD.
This technique offers a superior approach for precise downhole trajectory measurements.
The findings contribute to enhanced drilling operation quality and wellbore placement accuracy.