An anti-rollover hybrid control system for trucks based on active steering and differential braking

Abstract

An anti-rollover hybrid control system for trucks based on active steering and differential braking. The body lateral acceleration sensor, body yaw rate sensor and body roll angle sensor are arranged at the bottom or inside of the cargo box, and the steering wheel angle sensor is arranged at the steering column. The wheel speed sensor is arranged inside the wheel hub; the rollover state identification module includes a signal processing module, a centroid height identification module and an LTR estimation module, which are connected to the sensor through signal lines; the hybrid switching module is based on the estimated value of LTR and the value measured by the steering wheel angle sensor. The hybrid system theory switches among the three control modes; the active control force calculation module receives the control mode signal from the hybrid switching module and the signal from the rollover state recognition module, and judges the required active steering angle, brake wheel and brake pressure; the anti-rollover executive module performs active control according to the signal given by the anti-rollover active control module. The invention reduces the risk of vehicle rollover.

Description

technical field [0001] The invention belongs to the field of active safety control of automobiles, and in particular relates to an anti-rollover hybrid control system for trucks based on active steering and differential braking. Background technique [0002] With the rapid development of the economy, the road infrastructure has been continuously improved, the number of automobiles has continued to increase, and the logistics and transportation industry has vigorously developed. Followed by the increase in the number of traffic accidents, resulting in huge property losses and casualties. Rollover is a more dangerous type of traffic accident. Once the vehicle rolls over, the probability of death is very high. Van trucks, which are common in the logistics and transportation industry, are particularly prone to rollover due to their high center of gravity after loading, and the consequences of rollover are particularly serious. They have always been one of the hardest hit areas ...

AI Technical Summary

Problems solved by technology

In reality, when the driver adjusts the steering wheel back and forth, there is a transition zone during the change of the LTR sign. At this time, the LTR is below the threshold, but the roll will be further deteriorated due to the compliance effect of the vehicle, and rollover mitigation is missed. The risk level is a good opportunity; and the prediction of the LTR at the future time brings huge pressure on the real-time performance of the controller due to the need for complex and huge calculations

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