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Drop and pull transport coordination path planning method

A path planning, drop-and-hang technology, applied in instruments, data processing applications, forecasting, etc., can solve problems such as remote location and no involvement

Active Publication Date: 2016-07-06
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the existing vehicle route planning methods, the main problem is to solve the problem of the fixed collocation of tractors and trailers to complete the delivery task. However, in the real problem of delivering delivery services to multiple customers, some customers are located in remote locations. Tractors and trailers cannot reach these customer locations, and the tractors can only serve or visit these customers. How to make full use of the respective characteristics of tractors, trailers, and drop-and-hook stations to carry out coordination paths between different tractors and trailers Planning is a kind of collaborative path planning problem that needs to be solved urgently, but there is no solution involving related content in the existing methods

Method used

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  • Drop and pull transport coordination path planning method

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Embodiment Construction

[0070] In this embodiment, a drop-and-pull transportation collaborative path planning method is applied to a distribution service area composed of one yard A, M drop-and-pull sites, N car train customers, and K tractor customers, and One vertex of the circumscribed square of the delivery service area is set as the origin o, and the two adjacent sides of the origin o are set as the x-axis and the y-axis respectively, thus forming the coordinate system xoy; in the coordinate system xoy,

[0071] Denote the M drop-and-hang sites as S={S 1 ,S 2 ,…,S m ,…,S M}, 1≤m≤M; S m Indicates the m-th drop-and-hang station; the m-th drop-and-hang station S m The position is recorded as (x m ,y m );

[0072] Denote N car train customers as VC={VC M+1 ,VC M+2 ,…,VC M+n,…,VC M+N};1≤n≤N;VC M+n Represents the nth car train customer; the nth car train customer VC M+n The position is recorded as (x M+n ,y M+n ); the nth car train customer VC M+n The demand is denoted as D M+n ;

[...

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Abstract

The invention discloses a drop and pull transport coordination path planning method. The drop and pull transport coordination path planning method is characterized by comprising the following steps: (1) calculating a path cost matrix according to the Euclidean distance between any two nodes; (2) carrying out modeling for the drop and pull transport coordination path planning problem by the obtained path cost matrix; (3) generating an initial solution at random, and carrying out iterative solving on the initial solution by a simulated annealing algorithm to obtain an optimal solution; and (4) taking the scheme corresponding to the optimal solution as the optimal scheme for the drop and pull transport coordination path planning problem. According to the drop and pull transport coordination path planning method, structured decision-making can be carried out for the drop and pull transport coordination path planning problem; a motor tractor and trailer coordination path planning scheme is relatively accurately provided; and the efficiency, the reasonability and the accuracy of formulating the coordination path planning scheme are improved, so that the logistics distribution and transportation capability is improved.

Description

technical field [0001] The invention relates to a collaborative path planning method for drop and pull transportation, and belongs to the field of combination optimization. Background technique [0002] Trailers play an irreplaceable and important role in completing various distribution tasks in an efficient, economical, energy-saving and environmentally friendly way in future logistics and transportation. The performance of trailer transportation is inseparable from the assistance of the tractor it relies on. Therefore, in the path planning of the fleet, it is particularly important to realize the coordinated path planning of the tractor and the trailer. [0003] Among the existing vehicle path planning methods, the main problem is to solve the problem of the fixed collocation of the tractor and the trailer to complete the delivery task. However, in the real problem of delivering services to multiple customers, some customers are located in remote locations. Tractor towin...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/08G06Q50/28
CPCG06Q10/047G06Q10/08355G06Q10/08
Inventor 马华伟胡明明胡笑旋罗贺靳鹏夏维范奉伟
Owner HEFEI UNIV OF TECH
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