A data-driven intelligent and robust vehicle speed real-time planning method and system

An intelligent, robust, data-driven technology, applied in the field of vehicle speed research, can solve problems such as vehicle speed planning accuracy interference, and achieve the effects of reducing energy consumption, reducing congestion, and improving fuel economy.

Active Publication Date: 2020-03-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Application Information

AI Technical Summary

Problems solved by technology

At the intersection of signal lights, there are uncertain factors such as the duration of red lights, pedestrian passing conditions, and vehicle congestion conditions, which interfere with the accuracy of vehicle speed planning.

Method used

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  • A data-driven intelligent and robust vehicle speed real-time planning method and system
  • A data-driven intelligent and robust vehicle speed real-time planning method and system
  • A data-driven intelligent and robust vehicle speed real-time planning method and system

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specific Embodiment 1

[0091] Step 1: Based on the information transmission link of traffic infrastructure-cloud-vehicle-human, the vehicle segments the target line, and obtains the necessary information of the vehicle driving in the road segment, such as the duration of traffic lights, congestion degree, etc., to form historical data set.

[0092] Step 2: According to the data set obtained in step 1, obtain the random delay variable α of each road section i And calculate its probability density function f(α i ), combined with signal light information to obtain the "prohibited driving time (OFF)" variable and probability distribution spectrum, and the variable is updated with the data update.

[0093] Step 3: The vehicle controller (HCU) establishes the vehicle dynamics model and the road model based on the information obtained in step 1, and constructs the most Optimal speed planning problem.

[0094] Step 4: HCU uses DP or other optimization algorithms to solve the vehicle speed planning proble...

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Abstract

The invention discloses a data-driven intelligent and robust vehicle speed real-time planning method and system. The data-driven intelligent and robust vehicle speed real-time planning method comprises the steps that vehicle driving information of all segments in an objective road segment is obtained; road segment random delay variables, probability density function corresponding to the random delay variables and no passing time in the road segment are obtained according to the driving information; a road model is established; a constraint condition of opportunity of the vehicle driving is determined according to the road model and the no passing time in the road segment; weight coefficients of fuel consumption, time and safety in the vehicle driving are obtained; a vehicle speed planningobjective function is established according to the objective road segment and the weight coefficients; and the vehicle speed planning objective function is solved according to a dynamic planning algorithm and the constraint condition of opportunity, and the optimal vehicle speed is obtained. According to the data-driven intelligent and robust vehicle speed real-time planning method and system, thecorresponding objective function can be established according to the requirement, and the corresponding vehicle speed optimized effect is achieved.

Description

technical field [0001] The invention relates to the field of vehicle speed research, in particular to a data-driven intelligent robust vehicle speed real-time planning method and system. Background technique [0002] With the increase of road vehicles, traffic congestion and traffic accidents often occur. At the same time, the increase of vehicle idling time will lead to an increase in energy consumption, especially at signal intersections. Therefore, it is very important to plan vehicle speed trajectories. At the intersection of signal lights, there are uncertain factors such as the duration of red lights, pedestrian passing conditions, and vehicle congestion conditions, which interfere with the accuracy of vehicle speed planning. Contents of the invention [0003] The purpose of the present invention is to provide a data-driven intelligent robust vehicle speed real-time planning method and system, which can establish corresponding objective functions according to require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/052G08G1/08G06Q10/04G07C5/08
CPCG06Q10/04G07C5/0808G08G1/052G08G1/08
Inventor 孙超孙逢春李军求闵青云孙海迪郭婷婷励夏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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