Control method and control system for safe driving of vehicle with zero tire pressure

Abstract

The invention provides a vehicle control method and a vehicle control system for safety driving under the zero tire pressure. The control method includes the first step of obtaining the tire pressure and the rotation speed of each wheel of a vehicle, the second step of judging whether a tire burst happens according to the tire pressure and the rotation speed of each wheel of the vehicle, the third step of judging whether other vehicles, pedestrians or barriers exist in the blind zone of the vehicle if the tire burst happens, the fourth step of obtaining vehicle speed signals and torque signals of an electric power steering system, and the fifth step of controlling an electronic vehicle stabilizing system to start if the other vehicles, the pedestrians or the barriers exist in the blind zone of the vehicle, and sending first control signals to the electric power steering system so as to repeatedly carry out fine adjustment on the driving direction of the vehicle according to the torque signals and the vehicle speed signals. Through the vehicle control method and the vehicle control system for safety driving under the zero tire pressure, the driving direction of the vehicle can be corrected when the tire burst happens, so accidents are reduced; when the tire burst happens or the tire pressure is lower than a safety driving value, the vehicle control system can give an alarm to prompt the pedestrians and the other vehicles outside the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a control method and a control system for a vehicle to run safely with zero tire pressure. Background technique [0002] When the vehicle is running at high speed or in urban and rural areas, a tire blowout will occur due to the vehicle running for a long time or being pressed against a sharp object. The prior art automobile tire blowout control technology is generally realized through the mechatronics system, mainly based on the tire pressure monitoring system, through the reasonable use of ABS (Anti-lock Braking System, anti-lock brake control system) control operation or ESP ( Electronic Stability Program (Electronic Stability Control System) brake operation, separate the tire blowout accidents that occur in straight driving and the tire blowout accidents that occur when turning, and help the driver control the direction of travel. At the same time, the seat belts are...

AI Technical Summary

Problems solved by technology

[0040] But the shortcoming that prior art exists has: 1, the ABS system of vehicle and ESP system are used separately, after vehicle blows out, at first need to identify whether to run in a straight line or turn, so the response time of vehicle is relatively slow, scope of application Small, little practical value

The road driving conditions are complex and changeable, and the single use of the ABS system or the ESP system cannot control the driving direction of the vehicle well and cannot meet the safe driving requirements of the vehicle

In addition, due to the extremely short puncture time, the angle of the steering wheel changes greatly after the puncture of the vehicle, so there is a risk of misjudgment when distinguishing whether to drive in a straight line or on a curve.

2. When the vehicle is driving on a highway with dense traffic, if the vehicle automatically performs ABS braking operation due to low tire pressure, the vehicle behind may not have time to react, resulting in a collision accident

Moreover, in the prior art, only the safety of vehicle source is considered, and the safety of external vehicles and personnel is not considered.

3. When the vehicle is driving in a straight line, only relying on the ABS braking operation can only achieve a certain deceleration effect, which cannot meet the risk of steering wheel loss of control caused by low tire pressure.

In addition, when the vehicle is on a curve, only relying on the ESP braking operation can start a certain deceleration and correct the oversteer or understeer, but it cannot meet the risk of steering wheel loss of control caused by the vehicle's low tire pressure.

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