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Interchange exit ramp linear safety optimization method based on genetic algorithm

A genetic algorithm and interchange technology, applied in the field of genetic algorithm-based optimization of interchange exit ramp alignment safety, can solve problems such as lack of exit ramp alignment safety optimization, and achieve the effect of improving safety

Pending Publication Date: 2020-06-09
ZHEJIANG ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: at present, there is no technical problem to effectively optimize the safety of the exit ramp alignment

Method used

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  • Interchange exit ramp linear safety optimization method based on genetic algorithm
  • Interchange exit ramp linear safety optimization method based on genetic algorithm
  • Interchange exit ramp linear safety optimization method based on genetic algorithm

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Embodiment 1

[0032] A genetic algorithm-based method for optimizing the alignment safety of interchange exit ramps, such asfigure 1 As shown, the present embodiment comprises the following steps: A) read the linear shape of the exit ramp to be optimized, and establish a mathematical model of the linear shape of the exit ramp; B) determine the data model of the linear shape of the exit ramp according to the mathematical model of the linear shape of the exit ramp; Determine the constraint conditions of the model, and establish the MATLAB evaluation model; D) establish and run the genetic algorithm model instance, and obtain the linear safety optimization result of the interchange exit ramp.

[0033] In step A), the mathematical model of the exit ramp alignment includes a plane alignment model, a longitudinal section alignment model, and a superelevation model, and the methods for establishing the alignment mathematical model of the exit ramp include: A1) Establishing the alignment model: divid...

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Abstract

The invention relates to the technical field of computers, and particularly to an interchange exit ramp line shape safety optimization method based on a genetic algorithm. The method comprises the following steps: A) reading a to-be-optimized exit ramp line shape, and establishing an exit ramp line shape mathematical model; B) determining a data model of an exit ramp line shape according to the mathematical model of the exit ramp line shape; C) determining constraint conditions according to the exit ramp linear model, and establishing an MATLAB evaluation model; and D) establishing and operating a genetic algorithm model instance to obtain an interchange exit ramp line shape safety optimization result. The method has the substantive effects that optimization is carried out by considering aplurality of linear parameters of the interchange exit ramp at the same time, so that the efficiency and effect of linear optimization of the interchange exit ramp can be improved, and the linear safety degree of the exit ramp is improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method for optimizing the line shape safety of an interchange exit ramp based on a genetic algorithm. Background technique [0002] Highway off-ramps are often accident-prone. If the driver enters the exit ramp with poor linear conditions from the expressway with a higher design speed, if the deceleration is not enough, there will be uncoordinated running speed, psychological tension and other factors that affect driving safety. serious accident. Due to site conditions and environmental constraints, the technical indicators of exit ramps are often low, and the linear combination is poor, resulting in complex vehicle operating conditions. The safety of an off-ramp largely depends on the safety of the ramp alignment. However, the current off-ramp optimization method has limitations, and only optimizes the engineering quantity, and lacks an optimization scheme for the overall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06N3/12G06F111/06G06F111/10
CPCG06N3/126
Inventor 吉星龚健顾澎陈晴吴志伟侯阳阳
Owner ZHEJIANG ELECTRIC POWER DESIGN INST