Ice and snow road surface brake actuator based on aerodynamics and automobile braking performance and control method thereof

Abstract

The invention discloses an ice and snow road surface brake actuator based on aerodynamics and automobile braking performance and a control method thereof. The brake actuator comprises a duct fan, a duct pipe, a pressure sensor, an ECU, an air outlet opening control switch, a pressure sensing switch and a driving device, the driving device includes a vehicle-mounted power supply, a voltage amplifier and a brushless direct current motor. The method of increasing braking resistance through duct fan thrust is adopted to increase braking deceleration and reduce braking distances, in the case of lowground adhesion coefficient such as ice and snow road surfaces and the like, the braking distances can be significantly reduced, and the driving safety is improved. The brake actuator utilizes the changes of the air thrust of an air outlet to reduce the direction deviation or side slip of an automobile when braking and improve the stability of automobile braking; the air thrust of the air outleton the front of wheels is used for partially removing snow water on the road surface in front of the wheels and improving the road adhesion coefficient. Simultaneously the brake actuator automaticallyruns when a brake pedal is pressed, and the operation is simple and reliable.

Description

technical field [0001] The invention relates to a brake actuator for vehicles on ice and snow roads based on aerodynamics and vehicle brake performance, and belongs to the technical field of driving safety. Background technique [0002] With the improvement of people's economic level, cars have gradually entered thousands of households, and driving safety has become a major concern of the whole society. According to the analysis of my country's geographical location, except for a few areas in the south, snowfall and freezing weather will occur in a large area of ​​the country in winter. The adhesion coefficient on this ice and snow road is extremely low. Long even lost control due to side skidding. According to foreign statistics, the incidence of traffic accidents in winter is significantly higher than the average level of traffic accidents in the whole year. The incidence of traffic accidents in ice and snow weather is five times that in sunny weather, and the accidents ar...

AI Technical Summary

Problems solved by technology

Domestic experts have proposed many control system theories and optimization algorithms to improve the braking performance of automobiles in harsh environments, but the applicability to sudden changes in road surfaces is poor, and the control system is complex and slow in response

The traditional method of shortening the braking distance on ice and snow roads is mainly to improve the adhesion coefficient by changing the shape of the road surface. In complex traffic environments and unexpected situations, there are many shortcomings in braking efficiency and the directional stability of vehicles on ice and snow roads is not considered.

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