Automobile electronic anti-overturning control method

Abstract

The invention discloses an automobile electronic anti-overturning control method. The automobile electronic anti-overturning control method includes: using an electronic anti-overturning device to detect and analyze the vehicle velocity V, the transverse acceleration a, the rolling angle Alpha, the pitch angle Beta, and the rolling angular velocity Omega in real time through the corresponding control strategy. The control method is not activated in the following one or more conditions including circuit failure, brake closure, air pressure alarm, uphill and turning, and a bump road, otherwise, the activation condition is met. The control strategy includes: (1) when the rolling angle Alpha and the rolling angular velocity Omega reach rolling preset thresholds; (2) when the rolling angle Alpha and the transverse acceleration a reach rolling preset thresholds; and (3) when the transverse acceleration a and the rolling angular velocity Omega reach rolling preset thresholds. The automobile electronic anti-overturning control method can set the corresponding strategy according to the travelling condition of an automobile on different roads; an advanced gas circuit principle is adopted, brake allocation is more reasonable in working, and the travelling posture of the automobile can be rapidly corrected.

Description

Technical field [0001] The invention relates to the technical field of automobile driving safety protection, in particular to an automobile electronic anti-overturning control method. Background technique [0002] When the car is driving, if the driving radius is too small, the speed is too fast, the lateral wind acts or avoids obstacles, the lateral centrifugal force of the car will increase, making the car in an unstable state that is difficult to control, and it is prone to overturning Or side-slip, or the tire may blow out due to the rapid increase in the load on the outer wheels of the car, and accidents caused by the driving of the car often occur. [0003] In addition, when a car is braking normally, people’s reaction speed is slow, often because it has not yet been braked and an accident has occurred; on the other hand, when a car is generally braking, all wheels are braked at the same time, and the operation stability is not strong. It also cannot generate a yaw moment to...

AI Technical Summary

Problems solved by technology

[0002] During the driving process of the car, if the driving radius is too small, the speed is too fast, when encountering the lateral wind force or avoiding obstacles, the lateral centrifugal force of the car will increase, making the car in an unstable state that is difficult to control, and it is prone to overturning or sideslip, and the tire may burst due to a sharp increase in the load on the outer wheel of the car, and the accidents caused by the car driving often occur

[0003] In addition, when the car is braking normally, people's reaction speed is slow, and the accident has already happened before the brake is often done; Can not produce a yaw moment to "righten" the vehicle body, which is easy to cause the car to overturn. The automatic anti-overturning device and method in the prior art still have the following disadvantages:

[0004] 1. The computing speed of the microprocessor is slow, the precision is low, the signal acquisition is in an analog mode, it is inconvenient to extract multiple parameters, and it is not suitable for condition judgment and strategy scheduling; 2. The control strategy is single, and the effect of automatic adjustment of braking force is poor; 3. The introduced control reference quantity is too small to accurately determine the degree of danger when the vehicle is moving in a curve; 4. The air pressure alarm signal of the vehicle itself is not directly introduced as the control quantity, so it is impossible to ensure that the actual alarm air pressure is consistent with the original vehicle demand; 5. In the There is no air source protection switch in the actuator, and normal driving cannot be guaranteed when the actuator fails; 6. The braking efficiency of the solenoid valve is poor, the principle of the air circuit is relatively backward, and the speed of correcting the vehicle attitude is slow; 7. The electric control The unit has no left-right horizontal calibration function, and the left-right horizontal symmetrical calibration of the electronic control unit assembly cannot be performed

In addition, when the vehicle is normally driving on bumpy road conditions, uphill and downhill, and turning road conditions, the existing anti-overturning device and method may cause misjudgment, so that the anti-overturning device of the vehicle works in the wrong situation, and the life of the vehicle components and the life of the driver and passengers will be greatly reduced. Significantly less comfort for personnel

Images