Fast and on-site calibration of the three-axis wheel force sensor using an embedded triaxial accelerometer. (November 2019)

• Record Type: Journal Article
• Authors: Zhu, Wenjun; Chen, Wei; Feng, Lihang
• Is Part Of: Measurement. Volume 146(2019)
• Page Start: 380
• Page End: 384
• Publication Date: 2019-11
• Subjects: Wheel force transducer/sensor -- On-site calibration -- Multi-axis force sensor; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2019.06.040
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: An on-site WFT calibration is proposed by using an embedded tri-accelerometer. The new error model is built for the on-site calibration. A simple calibration protocol is conducted. The calibration procedure is fast (less than 10 min) and accurate. Dynamical tests on soft terrain demonstrates the practicability. Abstract: Precise online calibration of Wheel force transducer/sensor (WFT) is difficult due to the safety risk of large-scale (kN and kN.m) mass attached on a rolling wheel, the impossibility of applying many loads at precise orientations of the transducer, and the difficulty to avoid the interference under the wheel rotation conditions. To tackle these problems, this paper presents an effective yet fast on-site WFT calibration by using an embedded triaxial accelerometer under the vehicle's gravitational loading conditions. A basic linear model of least-square calibration for the transducer is introduced, followed by the proposed new error model of online calibration. Experiments are performed by the gravitational load of vehicle itself, and compared with the wagon balance to verify the calibration protocol. The tested results demonstrate that the proposed technique provides an accurate, practical, and effective technique for on-line calibrating the WFTs.