Truck rollover prevention hybrid control system based on active steering and differential braking

Abstract

The invention relates to a truck rollover prevention hybrid control system based on active steering and differential braking. Specifically, a truck body transverse acceleration sensor, a truck body yaw velocity sensor and a truck body roll angle sensor are arranged at the bottom or inside a container, a steering wheel angle sensor is arranged on a steering column, and a wheel speed sensor is arranged on the inner side of a hub; a rollover state recognition module comprises a signal processing module, a centroid height recognition module and an LTR estimation module, and is connected to the sensors through a signal line; a hybrid switching module is used for switching among three control modes according to an LTR estimated value, a steering wheel angle sensor measured value and a hybrid system theory; an active control force calculation module receives a control mode signal given by the hybrid switching module and a signal given by the rollover state recognition module, and judges a required active steering angle, a required brake wheel and a required brake pressure through comparison with a reference model; and an anti-rollover execution module executes active control according toa signal given by an anti-rollover active control module. The vehicle rollover danger is reduced.

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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