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Multi-Objective Optimization Design of Vehicle Suspension Parameters Based on Game Theory

Author: FangHao
Tutor: XieNengGang
School: Anhui University of
Course: Mechanical Design and Theory
Keywords: Vehicle suspension system Multi-objective optimization Game Theory Fuzzy Theory Ride comfort
CLC: U463.33
Type: Master's thesis
Year: 2007
Downloads: 62
Quote: 0
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Abstract


The object of study of this article for a vehicle suspension system , vehicle ride comfort and vehicle road damage and other performance indicators on how to coordinate multi- objective optimization design of the suspension parameters . Through the establishment of the 8 degrees of freedom contains the vertical vibration of the seat , body vertical , pitch , roll vibration and a four - wheel vertical vibration of the vehicle suspension physical model , the application of the principle of darang Burr establish the kinetic equation , Matlab / Simulink software modal characteristics of time-domain simulation of the three grades of A, B, C pavement incentive equations were solved by the modal superposition method vehicle and three road excitation input under various degrees of freedom displacement , velocity, acceleration , etc. The amount of vibration response . Within the the suspension parameters set range , seat , suspension , wheels , stiffness , damping parameter variations on the performance of the vehicle . Vehicle ride comfort ( the seat acceleration rms ) and road damage ( as the objective function relative dynamic load rms ) performance of the tires , seats and suspension stiffness , damping parameters create a suspension system as a design variable , multi-objective optimization model for the analysis of multi- objective fuzzy optimization method and multi- objective game decision - making methods were used . 1 ) based on fuzzy math , construct two types of fuzzy evaluation function to solve the multi-objective optimization model ; 2 ) multi-objective optimization model based on game theory , game description , the Nash equilibrium model to solve the multi-objective optimization . The Two Solutions were good optimization results , both good ride comfort and road damage two requirements . Write in Visual FORTRAN environment , independent suspension 8 degrees of freedom vibration response solver , multi-objective fuzzy optimization program and multi- objective game design program suspension parameters were calculated and analyzed with examples . Game decision theory is applied to the vehicle suspension parameters of multi-objective optimization , development and enrich the design of the vehicle suspension system .

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