Evidence map›Paper›PMID 39779981›Full record

ArticleScientific reports2025

Automatic parking trajectory planning in narrow spaces based on Hybrid A* and NMPC.

Pei Zhang, SiLong Zhou, Jie Hu, WenLong Zhao, Jiachen Zheng, Zhiling Zhang, Chongzhi Gao

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Pei ZhangHubei Key Laboratory of Modern Auto Parts Technology (Wuhan University of Technology), Wuhan, 430070, People's Republic of China.
SiLong ZhouHubei Key Laboratory of Modern Auto Parts Technology (Wuhan University of Technology), Wuhan, 430070, People's Republic of China.
Jie HuHubei Key Laboratory of Modern Auto Parts Technology (Wuhan University of Technology), Wuhan, 430070, People's Republic of China. auto_hj@163.com.
WenLong ZhaoHubei Key Laboratory of Modern Auto Parts Technology (Wuhan University of Technology), Wuhan, 430070, People's Republic of China.
Jiachen ZhengHubei Key Laboratory of Modern Auto Parts Technology (Wuhan University of Technology), Wuhan, 430070, People's Republic of China.
Zhiling ZhangHubei Key Laboratory of Modern Auto Parts Technology (Wuhan University of Technology), Wuhan, 430070, People's Republic of China.
Chongzhi GaoCommercial Product R&D Institute, Dongfeng Automobile Co., Ltd., Wuhan, 430070, People's Republic of China.

Funding

Major research projects of Hubei Province 2023BAA017Major Science and Technology Projects of Hubei Province 2022AAA001
6 · The paper itself

Abstract

The rapid acceleration of urbanization and the surge in car ownership necessitate efficient automatic parking solutions in constricted spaces to address the escalating urban parking issue. To optimize space utilization, enhance traffic efficiency, and mitigate accident risks, a method is proposed for smooth, comfortable, and adaptable automatic parking trajectory planning. This study initially employs a hybrid A* algorithm to generate a preliminary path, then fits the velocity and acceleration based on a cubic polynomial. The kinematic constraints of the vehicle and obstacle avoidance constraints are then meticulously defined, and a coupled nonlinear model predictive control (NMPC) method is employed to optimize the trajectory. Compared to the hybrid A* algorithm, the optimized trajectory demonstrates superior space utilization and improved smoothness. The experimental results indicate that the proposed method performs effectively in automated parking tasks in confined spaces, suggesting promising applications and broad prospects for future.

Indexed as

Automatic parkingCollision constraintCubic polynomialHybrid A* algorithmNMPCOptimal control

Identifiers

PMID39779981
PMCPMC11711548

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.