Urban ramp driving condition construction method and application

A technology of driving conditions and construction methods, which is applied to the application of urban ramp driving conditions and the construction of urban driving conditions, can solve the problem of no urban ramp driving conditions, urban ramp factors are taken into account, and cannot be used for testing. Problems such as car driving performance

Pending Publication Date: 2020-04-14
XIHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It can be seen from the above that there are currently existing vehicle driving conditions for different test purposes, usually based on speed-time condition curves, which do not take into account the factors of urban ramps, and are not available for

Method used

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  • Urban ramp driving condition construction method and application
  • Urban ramp driving condition construction method and application
  • Urban ramp driving condition construction method and application

Examples

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Embodiment

[0095] This implementation takes the roads in the urban area of ​​Chongqing, a mountain city, as an example, and explains in detail the construction method of urban ramp driving conditions.

[0096] The construction method of urban ramp driving conditions used in this embodiment, such as figure 1 shown, including the following steps:

[0097] (S1) Acquisition of urban ramp driving data: through the investigation of urban roads with ramps, an effective test route is selected, and road data collection is performed on the selected test route within the set test time to obtain the vehicle speed and corresponding driving speed. The time and road slope angle information of the vehicle's location.

[0098] This step is to collect the basic data of the urban ramp journey, mainly through the survey of urban roads with ramps, select an effective test route, and then drive the vehicle to collect data on the effective test route and set test time. In this embodiment, a VBOX data acquisi...

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Abstract

The invention discloses an urban ramp driving condition construction method and application. The method comprises the steps: firstly, selecting an urban road containing a ramp as a test route and acquiring speed and slope angle information on the test route; preprocessing the acquired data to obtain effective data, then performing short-stroke division and principal component analysis according tothe effective data, performing short-stroke clustering analysis by adopting an SOM neural network according to a principal component analysis result, screening short strokes according to a clusteringanalysis result, and finally combining the selected short strokes to form an urban ramp driving condition meeting requirements. The related parameters of the ramp are listed into the short-stroke characteristic parameters, and the urban ramp information is contained in the constructed driving working condition so that the constructed driving working condition contains urban ramp driving characteristics and can meet the requirements of an automobile urban ramp driving performance test and can be used as a reference working condition of the automobile urban ramp driving performance test in an automobile bench performance experiment and a performance simulation experiment.

Description

technical field [0001] The invention belongs to the field of construction of urban standard driving conditions, and relates to the construction of urban driving conditions with ramp information and the application of the constructed urban ramp driving conditions. Background technique [0002] Vehicle driving conditions generally refer to the speed-time curve when the vehicle is driving in a specific traffic environment (such as expressway, urban road, etc.), and are mainly used to test vehicle energy consumption / fuel consumption, emissions, etc. in the development and evaluation of new automotive technologies Performance indicators are a common core technology in the automotive industry. [0003] The three typical operating conditions systems widely used in automobile energy consumption / fuel consumption and emission testing worldwide are American driving conditions, Japanese driving conditions and European driving conditions. There are many types of driving conditions in th...

Claims

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Application Information

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IPC IPC(8): G06F30/28
Inventor 阴晓峰梁益铭陈柯序窦畅杨柯普
Owner XIHUA UNIV
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