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논문 기본 정보

자료유형
학술대회자료
저자정보
Xiaoxue Zhang (National University of Singapore) Jun Ma (University of California) Zilong Cheng (National University of Singapore) Tong Heng Lee (National University of Singapore)
저널정보
제어로봇시스템학회 제어로봇시스템학회 국제학술대회 논문집 ICCAS 2020
발행연도
2020.10
수록면
167 - 172 (6page)

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초록· 키워드

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The task of highly effective navigation is certainly one of the critical technologies of autonomous vehicles that have been widely investigated by researchers. In this paper, a navigation framework with path planning and tracking is presented, where a feasible and collision-free trajectory is generated for nonholonomic vehicle systems. In terms of path planning, an LQR-RRT<SUP>*</SUP> algorithm is applied to plan a path without collision. It is an optimal sampling-based planning algorithm with linear quadratic regulation-based heuristics, and able to tackle some rather complicated or underactuated dynamic systems. In order to improve the feasibility of the planned path and compensate for the deterioration of optimality due to sampling times, the approach is taken where a cubic spline path is additionally generated. The path tracking problem is formulated as a constrained optimization problem for the nonholonomic vehicle system, and then the required steering angle and acceleration is computed to avoid potential collisions. The results of the simulation experiments clearly demonstrate the effectiveness of the proposed navigation framework.

목차

Abstract
1. INTRODUCTION
2. PATH PLANNING
3. PROBLEM FORMULATION
4. SIMULATION RESULTS
5. CONCLUSION
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