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International Journal of Automotive Technology > Volume 17(3); 2016 > Article
International Journal of Automotive Technology 2016;17(3): 427-435.
doi: https://doi.org/10.1007/s12239-016-0044-7
ESTIMATION OF VEHICLE SIDESLIP ANGLE AND TIRE-ROAD FRICTION COEFFICIENT BASED ON MAGNETOMETER WITH GPS
J.-H. YOON1, S. EBEN LI2, C. AHN3
1TRW Automotive
2Tsinghua University
3Pusan National University
ABSTRACT
This paper presents a method that estimates the vehicle sideslip angle and a tire-road friction coefficient by combining measurements of a magnetometer, a global positioning system (GPS), and an inertial measurement unit (IMU). The estimation algorithm is based on a cascade structure consisting of a sensor fusing framework based on Kalman filters. Several signal conditioning techniques are used to mitigate issues related to different signal characteristics, such as latency and disturbances. The estimated sideslip angle information and a brush tire model are fused in a Kalman filter framework to estimate the tire-road friction coefficient. The performance and practical feasibility of the proposed approach were evaluated through several tests.
Key Words: GPS, Kalman filter, Magnetometer, Sideslip angle, Tire-road friction coefficient
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