| Magneto-rheological (MR) damper, with the advantages of controllable damping,structural simplicity, lower energy consumption and fast response, has become one ofthe focuses in the field of semi-active structural vibration suppression, and is widelyused in automotive, civil engineering, aviation and other fields.In this paper, a single–ended magnetorheological damper is designed. The inversemodel of the damper is established by experimental data, and finally, a1/4car dynamicsmodel is utilized for the validation based on the MR damper model which is built underthe characteristics test of MR damper.The main content of the study is as follows:1The MR fluid and its properties are introduced, and the classical applications ofMR damper are briefly described. After reviewing of the research on inverse model ofMR damper, the existing problems are summarized, and the main work in this paper isintroduced.2By using the theories of rheology, the Newtonian flow quasi-static model ofmagnetorheological damper is developed. Based on the model, the structural parametersof the rheology of magneto-rheological damper are determined. According to themagnetic circuit analysis, the parameters of electromagnetic circuit are determined. Thereason of idle stroke is analyzed, and a formula is proposed to determine thecompensation stiffness, and by which, the single-ended MR dampers is manufactured.3According to the equation of state and rheological principles, the output forcemodel of magnetorheological damper is developed and the characteristics test is carriedout. It has shown that the charging pressure of accumulator has a great influence on thedamper’s behaviors.4Based on the test data, the MR damper model and inverse model for follow-upcontrol system are developed by using BP neural network. A1/4car dynamics model isutilized to verify the reverse model of MR damper, and it is proved that the inversemodel is in good behavior.Finally, the paper is concluded and innovative points and the flaws are outlined. |
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