NguyenXuanBao TV pdf Dissertation MODELING AND SEMI ACTIVE VIBRATION CONTROL OF STRUCTURES USING MAGNETORHEOLOGICAL ELASTOMERS Kanazawa University Graduate School of Natural Science and Technology Div[.]
Dissertation MODELING AND SEMI-ACTIVE VIBRATION CONTROL OF STRUCTURES USING MAGNETORHEOLOGICAL ELASTOMERS ☢Ẽ⢓ᙎᛶ࢚ࣛࢫࢺ࣐ࢆ⏝࠸ࡓᵓ㐀≀ࡢࢭ࣑ࢡࢸࣈไࣔࢹࣝ 㛵ࡍࡿ◊✲ Kanazawa University Graduate School of Natural Science and Technology Division of Mechanical Science and Engineering Student Number 1524032017 Name: Nguyen Xuan Bao Chief advisor: Prof Toshihiko Komatsuzaki June, 2018 Acknowledgements Firstly, I would like to express my special appreciation and thanks to my advisor Prof Toshihiko Komatsuzaki for the continued support of my doctoral research and related study, for his patience, motivation, and great knowledge I have been extremely lucky to have a supervisor who cared so much about my research, and who responded to my queries in great detail and promptly I am greatly honored and grateful to acknowledge the supports of Prof Yoshio Iwata, Dr Haruhiko Asanuma for their valuable advices, and helps in writing this dissertation I would like to offer my deep thanks to all the committee members for their helpful comments I thank my fellow labmates in for the useful discussions, for the tutoring, and for all the fun we have had in the three years Contents Chapter Introduction………………………………………………………………………………… 1.1 Background…………………………………………………………………………………… 1.2 Aims and Objectives of this thesis…………………………………………………………… 1.3 Contributions to Knowledge…………………………………………………………………… 1.4 Thesis Organization…………………………………………………………………………… Chapter Literature Review…………………………………………………………………………… 2.1 Magnetorheological Elastomer (MRE) ……………………………………………………… 2.2 MRE-based isolator…………………………………………………………………………… 2.3 Modelling of MRE-based isolator…………………………………………………………… 11 2.4 Semi-active control …………………………………………………………………………… 14 Chapter Properties and Modelling of MRE-based isolator……………………………………… 18 3.1 Experimental setup…………………………………………………………………………… 18 3.2 Properties of MRE…………………………………………………………………………… 19 3.3 Proposed model of MRE-based isolator……………………………………………………… 20 3.4 Determination of model parameters………………………………………………………… 24 3.5 Results and discussions……………………………………………………………………… 29 3.6 Summary……………………………………………………………………………………… 31 Chapter Semi-active fuzzy control of 1-DOF system using magnetorheological elastomers…… 32 4.1 Dynamics model of 1-DOF system…………………………………………………………… 32 4.2 Semi-active on-off vibration controller……………………………………………………… 33 4.3 Semi-active fuzzy vibration controller……………………………………………………… 34 4.4 Numerical evaluation of the control performance…………………………………………… 36 4.5 Experimental results and discussions………………………………………………….……… 38 4.6 Summary……………………………………………………………………………………… 43 i Chapter Semi-active fuzzy control of multi-degree-of-freedom structure using magnetorheological elastomers……………………………………………………………………………………………… 44 5.1 A model of the isolator building……………………………………………………………… 45 5.2 Semi-active fuzzy control…………………………………………………………………… 45 5.3 Numerical evaluation of the control performance…………………………………………… 48 5.4 Experimental results……………………………………………………………………………49 5.5 Discussions and summary…………………………………………………………………… 53 Chapter Robust adaptive controller for semi-active control of uncertain structures using an MRE-based isolator…………………………………………………………………………………… 54 6.1 Limitations on force generation of the MRE-based isolator………………………………… 54 6.2 Inverse dynamics model of an MRE-based isolator………………………………………… 55 6.3 Equation of motion…………………………………………………………………………… 56 6.4 Robust adaptive controller design…………………………………………………………… 59 6.5 Numerical evaluation of the control performance…………………………………………… 63 6.6 Discussions and summary…………………………………………………………………… 68 Chapter Summary, Conclusion and Recommendations…………………………………………… 69 7.1 Summary……………………………………………………………………………………… 69 7.2 Conclusion…………………………………………………………………………………… 70 7.3 Recommendations for future work…………………………………………………………… 71 ii