Novel semi-active hydro-pneumatic suspension control system and method

A technology of oil and gas suspension and control system, applied in suspension, elastic suspension, transportation and packaging, etc., can solve the problems of poor convergence, time lag, large amount of calculation, etc., to improve ride comfort, good convergence, The effect of reducing the time delay

Active Publication Date: 2017-11-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

The adjustment of the solenoid valve requires an operating time, which causes a time lag, which weakens the effect of the oil-pneumatic suspension
For complex optimization problems, especially the non-linear problems of oil-gas suspension, the widely used optimization algorithms often have poor convergence, large amount of calculation, and troubled by local extreme points, which to a certain extent affect the smoothness of car driving sex

Method used

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  • Novel semi-active hydro-pneumatic suspension control system and method
  • Novel semi-active hydro-pneumatic suspension control system and method
  • Novel semi-active hydro-pneumatic suspension control system and method

Examples

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Embodiment

[0029] like figure 2 A simplified outline of a car is shown, such as figure 2 , 3 , 4, a road condition detector is installed in the center of the front of the car body, and two displacement sensors are respectively installed in the four suspension systems to measure the compression displacement of the suspension and the displacement of the wheel relative to the road surface, the road condition detector, the displacement sensor, the semi-active oil and gas The suspension is all connected to the ECU. The road condition detector is installed at the front of the vehicle body to detect the road ahead and predict the unevenness level of the road surface, so as to compensate the driver's preview judgment. The relative displacement between the body and the tires is the compression displacement of the suspension and the distance between the wheels and the ground. The semi-active oil-pneumatic suspension system undertakes the axle and frame or body, and the specific installation p...

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Abstract

The invention discloses a novel semi-active hydro-pneumatic suspension control system and method. Firstly, the unevenness level of a current travelling pavement is judged through preview of a driver and preview of a road condition detector, and accordingly the damping of a semi-active hydro-pneumatic suspension is roughly adjusted; and then, the current optimal damping is calculated according to the artificial fish swarm algorithm and based on relevant parameters of a vehicle and the suspension, and the damping is changed by changing the area of damping holes in the hydro-pneumatic suspension through a controller. The novel semi-active hydro-pneumatic suspension control system is simple in structure and easy to implement and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of automobile chassis, and in particular relates to a new semi-active oil-air suspension control system and method, in particular to a damping control logic method of a semi-active oil-air suspension system. Background technique [0002] Compared with the traditional suspension system, the active suspension system can dynamically and adaptively adjust the stiffness and damping of the suspension according to the change of the driving conditions of the car, so as to improve the ride comfort and ride comfort of the car. Scholars at home and abroad have conducted extensive research on the hydro-pneumatic suspension system, and the active hydro-pneumatic suspension system is one of the typical active suspension systems at present. [0003] The oil-pneumatic suspension system integrates the functions of elastic elements and shock absorbers. It uses oil as the force transmission medium, inert gas as the elastic med...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/015B60G17/0165
CPCB60G17/0152B60G17/0165B60G2202/152B60G2202/24B60G2400/102B60G2400/821B60G2600/184
Inventor 徐瀚赵又群
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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