A vehicle tire pressure drop emergency protection control system and control method thereof

A technology for controlling systems, tire pressure, applied in vehicle components, elastic suspension, transportation and packaging, etc., can solve problems such as unsolved vertical load redistribution of tires

Active Publication Date: 2021-11-05
JILIN UNIV
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  • Application Information

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Problems solved by technology

[0007] The paper "Research on Differential Braking of Tire Blowout Vehicles" also studied the change of tire vertical load after a tire blowout, and proposed a control strategy for differential braking of a tire blowout vehicle based on the principle of electronic stability control, but did not solve the problem of tire blowout. Redistribution of tire vertical load

Method used

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  • A vehicle tire pressure drop emergency protection control system and control method thereof
  • A vehicle tire pressure drop emergency protection control system and control method thereof
  • A vehicle tire pressure drop emergency protection control system and control method thereof

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Embodiment Construction

[0081] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0082] figure 1 is the two-degree-of-freedom vibration system model of the body and the wheel, in the figure, m 1 Is the unsuspended mass (wheel 501 mass); m 2 is the suspension mass (body mass); K is the spring stiffness; C is the damping coefficient of the shock absorber; U is the control force, K t is the tire stiffness.

[0083] The vertical displacement coordinate of the wheel 501 and the body is z 1 ,z 2 , the origin of the coordinates is selected at their respective equilibrium positions, and their motion equations are:

[0084]

[0085] It c...

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Abstract

The invention discloses a vehicle tire pressure rapid drop emergency protection control system and a control method thereof. The input interface of the central processing module is connected with the tire pressure and vehicle state monitoring module, and the output interface is connected with the control module and an alarm. The core executive mechanism of the executive module: emergency protection device for tire pressure rapid drop, including parallelogram mechanism, airbag assembly and anti-collision block, etc. The airbag assembly includes gas generator and protective airbag, etc. When abnormalities such as rapid drop in tire pressure occur in the vehicle, the present invention can alarm or perform emergency protection operations at the same time according to the tire pressure drop rate, vehicle speed, road conditions and other information: detonate the protective airbags at each suspension in a suitable way, and Under the action of the mechanism, it is vertically embedded in the anti-collision block pit fixed on the vehicle body at the top of each wheel, which plays a role similar to that of an active suspension to adjust the body posture and wheel positioning parameters, and redistributes the vertical load acting on each wheel. Adjust the force of each wheel, so that the vehicle quickly tends to the ideal state of motion.

Description

technical field [0001] The invention relates to the technical field of automobile safety, and more specifically, to an emergency protection control system and a control method thereof for vehicle tire pressure rapid drop. Background technique [0002] Rapid drop in tire pressure is the most lethal accident hazard and the most difficult to prevent, and is an important cause of sudden traffic accidents. The rapid drop in tire pressure is most serious with blowout accidents. According to incomplete statistics, 42% of accidents on expressways are caused by blowouts. 49.81% of the fatalities, 63.94% of the injured, 43.38% of the direct property losses. [0003] Tire pressure drop is a transient nonlinear change process. As the gas in the tire quickly dissipates, the mechanical characteristic parameters of the tire, such as effective rolling radius, radial stiffness, longitudinal stiffness, and cornering stiffness, will change greatly. This in turn causes changes in body height ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60G17/015
CPCB60G17/0155
Inventor 李红艳马芳武郭孔辉刘福志沈亮张玉新
Owner JILIN UNIV
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