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Steering system control strategy

A technology of steering system and control strategy, applied in steering mechanism, steering rod, fluid steering mechanism, etc.

Pending Publication Date: 2022-01-11
CHINA NORTH VEHICLE RES INST
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  • Abstract
  • Description
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Problems solved by technology

[0002] With the increase in the requirements for vehicle capacity and vehicle stability, safety, and comfort, how to ensure the reliability of vehicle steering, and how to ensure that the vehicle can still maintain stable steering until the power source of the system fails? Parking, how to achieve high efficiency and energy saving of the system, and reduce efficiency loss have become technical difficulties faced by domestic vehicle manufacturers and have not been able to be effectively solved. Therefore, it is particularly important to develop a proportional steering control system with automatic centering and emergency start functions. necessary

Method used

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Embodiment Construction

[0018] The vehicle posture adjustment system is described in detail below in conjunction with the accompanying drawings:

[0019] The hydraulic steering system is composed of system power source 1, long-time working hydraulic system, nested steering cylinder one 6, nested steering cylinder two 8, emergency energy storage system, electronic control device and sensors, pipelines, joints, etc. . The long-time working hydraulic system consists of centering accumulator control valve group 2, centering pressure sensor 3, centering accumulator 4, oil cylinder-proportional steering control valve group 5, oil cylinder one-angle displacement sensor 7, and oil cylinder two-angle displacement sensor 8 , oil cylinder two proportional steering control valve group 10, system pressure sensor 11 and corresponding pipelines and joints; emergency energy storage system consists of cut-off valve 12, emergency pressure sensor 13, emergency energy storage valve group 14, emergency accumulator 15 and...

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Abstract

The invention relates to a steering system control strategy which is used for solving the problems of stability and safety of a steering system. Specifically, in the system adjusting process, whether the system works normally or not is judged by monitoring a vehicle running speed signal, a steering wheel corner signal, a wheel corner signal, pressure signals of all parts of the system and the like, if yes, whether the rotating speed of the power take-off opening of a motor or an engine meets the use requirement or not is checked, and if yes, the control valve group charges and discharges oil to the steering oil cylinder, and acquires the wheel corner signal and the working pressure signal at each position in real time; if the rotating speed of the power take-off port of the motor or the engine does not meet the use requirement, the emergency steering system is started, the energy accumulator is used for providing compensation pressure for the system to guarantee normal work, whether the work pressure and the wheel turning angle meet the use requirement or not is further judged, if the target position is reached, the automatic centering function is executed, and steering is finished; and if the steering oil cylinder does not reach the target position, oil charging and discharging of the steering oil cylinder are continuously adjusted until the requirement is met.

Description

technical field [0001] The invention relates to a steering system control strategy, which belongs to the application field of hydraulic machinery and motor vehicles. Background technique [0002] With the increase in the requirements for vehicle capacity and vehicle stability, safety, and comfort, how to ensure the reliability of vehicle steering, and how to ensure that the vehicle can still maintain stable steering until the power source of the system fails? Parking, how to achieve high efficiency and energy saving of the system, and reduce efficiency loss have become technical difficulties faced by domestic vehicle manufacturers and have not been able to be effectively solved. Therefore, it is particularly important to develop a proportional steering control system with automatic centering and emergency start functions. necessary. [0003] In addition, the formulation of the steering system control strategy is very important, and its rationality directly determines the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D7/15B62D5/30
CPCB62D7/1572B62D5/30
Inventor 陈轶杰黄龙张亚峰万义强杜甫赵宁徐梦岩徐龙
Owner CHINA NORTH VEHICLE RES INST
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