Testing method for ESC control effect under high-adhesion rotation condition of passenger car

Abstract

The invention relates to a testing method for the ESC control effect under the high-adhesion rotation condition of a passenger car. The method comprises the following steps that a testing site is determined, mu is larger than or equal to 0.8, and the length and the width of the testing site are larger than 60 m; a round marked line with R0 equal to 15 m and a round marked line with 2R0 equal to 30 m are concentric and are drawn on the testing site; an ESC is closed, a steering plate is fixed for steering and starting so that the car can run along the marked line R0, an accelerator is fully accelerated until the car runs out of the range of the marked line 2R0, clockwise operation and anti-clockwise operation are respectively carried out for three times, and data are recorded; the ESC is opened, the steering plate is fixed for steering and starting so that the car can run along the marked line R0, the accelerator is fully accelerated until the car continuously runs for more than 30 s with the increase amount of the rotating track smaller than 5% within the range of the marked line 2R0, or runs out of the range of the marked line 2R0, clockwise operation and anti-clockwise operation are respectively carried out for three times, data are recorded, and the control effect and the control quality of the ESC are evaluated. The testing method can objectively reflect the ESC control effect under the high-adhesion rotation condition.

Description

technical field [0001] The invention relates to an automobile electronic stability control system, in particular to a method for testing the ESC control effect of a passenger car under high-speed rotation conditions. Background technique [0002] The test and evaluation regulations for automotive electronic stability control systems (ESC) are an important basis for ESC performance testing and evaluation. Currently, the only objective test and evaluation regulations for ESC are the US Federal Vehicle Safety Standard FMVSS126 (hereinafter referred to as Regulation 126). It is used to evaluate the intervention effect of ESC under a transient steering input of a certain working condition. From the aspect of test operation, the speed, accelerator and steering input specified in this regulation are deterministic and objective, which makes the test repeatable; from the aspect of ESC evaluation, the subjective factors of the driver are excluded due to the operation input , the test...

AI Technical Summary

Problems solved by technology

[0004] At present, the performance evaluation standards for items other than 126 regulatory tests provided by major ESC suppliers and some vehicle manufacturers have the following problems: (1) The objective evaluation standards are not accurate enough to conduct comprehensive performance evaluation and performance control; ( 2) In order to make up for the lack of objective evaluation criteria, the subjective evaluation of drivers or passengers is introduced

[0007] (3) It cannot provide the basis for evaluating the quality of ESC control, such as comfort and impact during the control process

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