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Top-layer vehicle body attitude control method based on pitching rolling force compensation

A posture control and body technology, applied to vehicle parts, elastic suspension, suspension, etc., can solve problems such as deterioration, and achieve the effects of improving safety, ensuring ride comfort, and ensuring reliability

Active Publication Date: 2021-02-05
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a method for controlling the posture of the roof body based on pitch and roll force compensation, which solves the problem of deterioration of the posture of the vehicle body during driving and improves ride comfort and safety

Method used

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  • Top-layer vehicle body attitude control method based on pitching rolling force compensation
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  • Top-layer vehicle body attitude control method based on pitching rolling force compensation

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0034] A roof body attitude control method based on pitch and roll force compensation of the present invention is applicable to a vehicle equipped with a magneto-rheological semi-active suspension. The simplified model of the vehicle is as follows: figure 1 As shown, the vehicle is simplified to a 7-DOF model, including the vertical motion of the center of mass, pitch motion, roll motion, and vertical motion of the four wheels; the structures of the four suspensions are all composed of coil springs and shock absorbers , the suspension connects the sprung and unsprung masses. The vehicle differential equation is as follows:

[0035]

[0036] Each suspension force F LF (left front suspension force), F RF (right front suspension force), F LR (left rear suspension forc...

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Abstract

The invention provides a top-layer vehicle body attitude control method based on pitching rolling force compensation, which belongs to the technical field of vehicle chassis control. According to thevehicle body posture control method, whether the ideal damping force is within the effective damping range which can be provided by a shock absorber or not is judged through a suspension controller, the ideal damping force exceeding the effective damping range of the shock absorber is corrected, and the state of the acceleration is judged through a logic threshold value control method; and on thebasis, distribution calculation of a pitching force weight coefficient and a rolling force weight coefficient is carried out, so that the ideal damping force is always in the effective range providedby the damping force of the shock absorber. The problem of vehicle body posture deterioration in the vehicle driving process is solved, and the riding comfort and safety are improved.

Description

technical field [0001] The invention relates to the field of automobile chassis control, in particular to a method for controlling the attitude of a roof body based on pitch and roll force compensation. Background technique [0002] The suspension connects the frame (or load-bearing body) and the axle (or wheel), transmits the force and moment between them, attenuates the vibration of sprung and unsprung mass caused by the impact of uneven road surface and the change of body posture, and improves the uneven road surface and driving Vehicle motion characteristics under incentive conditions such as human operation. In recent years, scholars at home and abroad have done a lot of research work on active and semi-active suspension control, using various control algorithms, such as ceiling control, fuzzy control, adaptive control, optimal control and neural network control, etc., but these None of the control algorithms can solve the influence of theoretically existing different ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/019B60G17/08B60G17/015
CPCB60G17/019B60G17/08B60G17/015B60G2800/014B60G2800/912B60G2400/104B60G2400/102B60G2400/106B60G2400/204B60G2400/20
Inventor 吴麟麟许春妞汪若尘丁仁凯
Owner JIANGSU UNIV
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