Affiliation:
1. Nanjing Tech University
2. Southeast University
Abstract
<div class="section abstract"><div class="htmlview paragraph">Wheel force transducer (WFT) is an important device used for real-time monitoring
of forces and moments acting on the wheels. However, the device faces a major
challenge in vehicular applications—coupling problems between its multiaxis
channels, leading to inaccurate measurements and limiting its important role in
the study of vehicle dynamics, the assessment of vehicle safety performance and
autonomous driving. The study of decoupled models with few parameters and high
accuracy is important for low-cost devices with limited computational power.
This paper presents a nonlinear decoupling method for WFT with high-order
polynomial (HOP) model to effectively improve the measurement accuracy of WFT
with eight-beam spoke elastomers. The method is based on a three-axis decoupling
model of WFT designed with an eight-beam spoke structure, employing a multiple
linear regression model to refine the physical model, resulting in a quadratic
curve that enhances the nonlinear fitting capability and improves measurement
accuracy. The experimental results show that the maximum decoupling error of the
method is less than 44%, which proves the effectiveness and applicability of the
method.</div></div>