A real driving cycle test device and method based on virtual vehicle

Abstract

The invention discloses a virtual vehicle-based real driving cycle test device and method. The method comprises the following steps: selecting a vehicle model, a road vehicle and a driver model in driver-vehicle-road modeling platform software to perform automatic driving or real driver driving; opening a driver-vehicle-road real-time platform and importing the driver model or the real driver operation, the vehicle model and the road model established in the driver-vehicle-road modeling platform into a real-time platform; operating the real-time operation platform; stopping the real-time platform after the driver model or the real driver drives under the selected road model and the vehicle model, and stopping a base frame system; saving operation information on a driver in a file of a specific format by the driver-vehicle-road modeling platform if the operation is the real driver operation, extracting a characteristic parameter of the driver and updating into the current driver model. According to the method, the calibration and the experiment of the entire vehicle are realized.

Description

technical field [0001] The invention relates to an engine experiment platform and its function realization method, in particular to a real driving cycle test experiment device and method based on a virtual vehicle. Background technique [0002] With the increasing emphasis on environmental issues, governments of various countries have continuously introduced regulations to reduce the emission of vehicle exhaust pollutants, and the accelerated use of oil resources brought about by economic development has made people pay more and more attention to the economy of vehicle fuel. [0003] At present, the automotive industry often uses several relatively fixed driving cycle test methods to test engine performance and emissions. The biggest disadvantage of this test method is that the test conditions are fixed and known, and the OEM can optimize the vehicle for this condition in advance, so the emission performance of the vehicle under a fixed driving cycle test will appear. It is...

AI Technical Summary

Problems solved by technology

It solves the problem that the cycle system of the traditional vehicle transmission system test bench cannot accurately reflect the power, economy and other related performance indicators in the actual operation of the vehicle.

In the patent CN103149027A, under different road conditions, the driver is used to operate the driving simulation unit to operate the vehicle transmission system, and its operation is saved for future use without a driver, which solves the inherent problem to a certain extent. The working condition cycle cannot accurately reflect the performance index of the actual operation of the car, but its idea is to test the operation of the car with several actual driver operations, without involving the driver model and the update of the driver model. Such a test method is not generalized It reflects the nature of the real driver's driving operation, without representativeness and scalability, and its road model comes with the driving simulation unit, its accuracy and authenticity are not very reliable, and its working conditions are limited, so it is not easy to expand

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