A magnetorheological fluid damper for robust vibration control of flexible rotor-bearing systems: A comparison between sliding mode and fuzzy approaches
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_TAVA-3-1_005
تاریخ نمایه سازی: 2 آبان 1396
Abstract:
Squeeze Film Dampers (SFD) are commonly used for passive vibration control of rotor-bearing systems. The Magnetorheological (MR) and Electrorheological (ER) fluids in SFDs give a varying damping characteristic to the bearing that can provide active controlschemes for the rotor-bearing system. A common way to model an MR bearing is implementing the Bingham plastic model. Adding this model to the finite element (F.E.) model of the rotor enablesanalyzing the rotor bearing behavior. In this work, considering uncertainties, three types of controllers are designed for a rotorbearing system and the efficiency of using these controllers inattenuating the vibration amplitude of the system is studied. As a result, employing these controllers reveals a remarkable improvement in reducing the vibration amplitude of the shaftmidpoint near the critical velocity.
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Authors
Ali Kamali Egoli
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
Abdolreza Ohadi
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
Milad Kazemi Mehrabadi
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran