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The Control Strategy Research For Electric Power Steering System Based On ADAMS And MATLAB

Posted on:2014-01-25Degree:MasterType:Thesis
Country:ChinaCandidate:J R SunFull Text:PDF
GTID:2232330395492275Subject:Vehicle Engineering
Abstract/Summary:PDF Full Text Request
The electric power steering system (EPS) is an advanced automotive power steeringsystem which arising recently. Compared with the traditional mechanical hydraulic steeringsystem and hydraulic steering system, it has many advantages such as saving energy,protecting environment, simple structure, reducing weight and flexible layout. The purpose ofthis paper is through the simulation software to establish the full vehicle model and controlmodel, established to verify the rationality of the control strategy.Consulting large number of date both at home and abroad in this paper, and gaining thedevelopment condition of electric power steering system and at the same time achieving thedevelopment condition on the control strategy and study method in the field of electric powersteering in some research institutions and colleges both at home and abroad; Based onAdams/Car and Matlab/Simulink software research for its in the application virtual prototypeand the control method research.Adopting Adams/Car to build full vehicle model, it include: steering system, frontsuspension, rear suspension, tire, vehicle subsystem model and so on; Then also through thegiven parameters and edit the tiers and pavement properties file, the full vehicle model isestablished in this paper and through the steering wheel angle pulse test to verify the validityof the simulation model.In the Matlab/Simulink software the control simulation model of the electric powersteering system is established, and the model includes assist characteristics curve model,adaptive fuzzy PID control model, motor model, impulse control model,etc.;In the modelthrough the comparison of the simulation analysis, and determining the adaptive fuzzy PIDcontrol strategy is used in paper.On the basis of the simulation model, the coupled electrical and mechanical joint simulation model is established, in the study of control strategy with traditional PID controlmethod and the adaptive fuzzy PID control method for electric power steering system of theworking process of the simulation study; Through the car’s handling stability simulation test,the conventional PID control and the adaptive fuzzy PID control are compared, the adaptivefuzzy PID control is more outstanding, therefore the adaptive fuzzy PID control strategyestablished in this paper is in line with the purpose of this study.
Keywords/Search Tags:Electric power steering system, Assist characteristic, Controlstrategy, Co-simulation
PDF Full Text Request
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