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휠 슬립에 강건한 확장칼만필터 기반 차량 상태 추정 : Vehicle State Estimation Robust to Wheel Slip Using Extended Kalman Filter
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- Authors
- Issue Date
- 2022-12
- Publisher
- 사단법인 한국자동차안전학회
- Citation
- 자동차안전학회지, Vol.14 No.4, pp.16-20
- Abstract
- Accurate state estimation is important for autonomous driving. However, the estimation error increases in situations that a lot of longitudinal slip occurs. Therefore, this paper presents a vehicle state estimation method using an Extended Kalman Filter. The filter estimates the states of the host vehicle robust to wheel slip. It utilizes the measurements of the four-wheel rotational speeds, longitudinal acceleration, yaw-rate, and steering wheel angle. Nonlinear measurement model is represented by Ackermann Model. The main advantage of this approach is the accurate estimation of yaw rate due to the measurement of the steering wheel angle. The proposed algorithm is verified in scenarios of autonomous emergency braking (AEB), lane change (LC), lane keeping (LK) using an automated vehicle. The results show that the proposed algorithm guarantees accurate estimation in such scenarios.
- ISSN
- 2005-9396
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