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Vehicle body double-wishbone independent suspension roll prevention and control method and structure

An independent suspension, double wishbone technology, applied in suspension, elastic suspension, vehicle components, etc., can solve the problems of high redundancy, high cost, complicated modification of anti-roll bars, etc., and achieve direct and accurate control and execution. The effect of few institutions and strong real-time

Active Publication Date: 2020-10-02
WUHAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modification of these actuators to the anti-roll bar is more complicated, and the redundancy and cost are higher

Method used

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  • Vehicle body double-wishbone independent suspension roll prevention and control method and structure
  • Vehicle body double-wishbone independent suspension roll prevention and control method and structure
  • Vehicle body double-wishbone independent suspension roll prevention and control method and structure

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Experimental program
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Embodiment Construction

[0022] Below in conjunction with specific embodiment the present invention is described in further detail:

[0023] The roll prevention and control method of the double wishbone independent suspension of the car body is to connect the lower wishbone of the suspension to the carriage through a swing arm that can control the rotation angle, and calculate the rotation angle of the swing arm by the following formula, so as to control the movement of the carriage Rolling, specifically:

[0024]

[0025] In the formula, θ 1 is the target value of the roll angle of the car, θ is the actual measured value, α1 is the target value of the relative angle between the swing arm and the car, and α is the actual measured value; where error 1 、error 1 for θ and θ 1 The difference between α1 and α. Formulas (2) and (4) represent the proportional-integral-derivative control algorithm in classical control theory for PID, and its internal parameter K is calibrated through engineering practi...

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Abstract

The invention discloses a vehicle body double-wishbone independent suspension roll prevention and control method, and a structure. According to the structure, hinge points where a left lower wishboneand a right lower wishbone of a common double-wishbone suspension are fixed to a vehicle frame are changed into movable hinge points which are connected with a motor swing arm through a rotating pin,so that the connecting points can move up and down to drive shock absorber lower supporting points on the left and right lower cross arms to move up and down. Upper supporting points of the shock absorbers are connected with a carriage, a frame in the bearing type vehicle body is integrated with the carriage, the left-right height of the carriage on the cross section can be changed when the uppersupporting points of the left-right shock absorbers move up and down, and the purpose of changing the roll state of the carriage is achieved. And a control system disclosed in the invention adopts a classic feedback control structure, is easy to implement and good in control effect, and can effectively improve the overlarge side inclination prevention capacity and comfort of the vehicle.

Description

technical field [0001] The invention relates to the technical field of automobile active safety, and relates to a vehicle body double-wishbone independent suspension roll prevention and control method and structure for preventing excessive vehicle roll motion and controlling vehicle roll motion. Background technique [0002] Research in recent years has shown that vehicle stability and ride comfort have become important research hotspots, and various active safety technologies have been applied to passenger cars and commercial vehicles. This includes brake anti-lock technology, drive anti-skid technology, vehicle stability control system, active suspension control system, active anti-roll control system, etc. The current active anti-roll control system mainly controls the cabin roll by controlling the deformation of the suspension shock absorber and the roll bar, so that the vehicle has better handling characteristics, driving comfort, and anti-rollover capabilities. Howeve...

Claims

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Application Information

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IPC IPC(8): B60G17/016
CPCB60G17/016B60G2200/10B60G2400/0511B60G2400/104B60G2800/20B60G2800/912Y02T10/72
Inventor 唐学权严运兵
Owner WUHAN UNIV OF SCI & TECH
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