Automobile rollover evaluation indexes and evaluation method

Abstract

The invention discloses automobile rollover evaluation indexes and evaluation method, and belongs to the field of vehicle active safety. In the method, the theory of vehicle rollover dynamics is applied to solve rollover threshold conditions of the automobile rollover evaluation indexes, and the rollover threshold conditions are converted into a phase diagram mode; and a roll angle, a roll angle acceleration and a lateral acceleration which are measured in real time during a driving process of the automobile are converted into a phase diagram of the roll angle and the roll angle acceleration,a phase diagram of the roll angle and the lateral acceleration and a phase diagram of the lateral acceleration and the roll angle acceleration, and the phase diagrams are compared with the rollover threshold conditions to judge whether the automobile is at risk of rollover. Driving parameters measured in real time are directly compared with the threshold conditions, and so the rollover evaluationindexes are accurate and the real-time performance is good. Furthermore, The imaging of the parameters can more directly reflect the influence of a plurality of parameters on the automobile rollover,which is conducive to guiding drivers or active safety equipment to take anti-rollover measures in actual driving.

Description

technical field [0001] The invention relates to the field of vehicle active safety, in particular to a vehicle rollover evaluation index and evaluation method. Background technique [0002] In traffic accidents, the death and injury rate of rollover accidents is quite high, especially for vehicles with high center of gravity and high inertia, such as large passenger cars, large trucks, concrete mixer trucks, etc., rollover accidents are more likely to occur. Once this type of vehicle rolls over, the consequences will be disastrous. Therefore, it is of great significance to accurately predict vehicle rollover in advance to prevent traffic accidents. [0003] After reviewing relevant documents, Chinese patent CN201510368690.0 discloses a vehicle rollover time measurement device and calculation method. The device and method measure the vertical load of each wheel through sensors, and calculate the rollover time of the vehicle during driving. Time allows the on-board control s...

AI Technical Summary

Problems solved by technology

It is difficult to determine the lateral acceleration threshold of the device and different thresholds need to be set, which is difficult to implement

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