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Adjustable Shock Absorber’s Damping Mathematical Modeling and Actuators Research

Author: WangXinFang
Tutor: ChenKe
School: Shenyang University of Technology
Course: Vehicle Engineering
Keywords: semi-active suspension adjustable damping shock absorber mathematical model performance simulation actuators
CLC: U463.33
Type: Master's thesis
Year: 2012
Downloads: 71
Quote: 0
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Abstract


As a key part of suspension damper, shock absorber plays an important role insuspension damping. Based on the physical model of the suspension system，a system ofdifferential equations is established in the application of Newtonian’s second lawaccording to the force of suspension. According to the "sky-hook" control principle,suspension dynamic delfection, car acceleration and wheel relative dynamic load areobtained by simulating the suspension with a vairable damping shock absorber and adamping shock absorber under random road conditions though theMATLAB/SIMULINK. The paper makes analysis of the vairable damping shockabsorber damping important role in the suspension through compairson with suspensiondynamic delfection, car acceleration and wheel relative dynamic load. Which isprovides an important basis for design and development damping grading adjustableshock absorber and the car semi-active suspension to improve the vehicle irde comfotr.According to the work pirnciple of shock absorber, and keyholes flow formula,established the mathematical model of the shock absorber. Through the MATLAB Mifle programming to get the shock absorber damping-displacement figure and speedcharacteirstic curve, the mathematical model is veirifed by the rationality of the building.Calculation and selection of adjustable damping of actuators for shock absotr)er;simulation the shock absorber with adjustable damping are both for complete the studyof actuators.

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Travel System > Suspension
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