A Study on Realization of Pneumatic Anti-vibration Apparatus with Insensitivity for Earthquake Ground Motion

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420170
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dynamics/Control
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: WAKUI SHINJI 東京農工大学, 工学(系)研究科(研究院), 教授 (70334472)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 除振装置 / 空気ばね / 地震動 / SI値 / DI値 / フィードバック / フィードフォワード

Outline of Final Research Achievements

This study shows estimation of earthquake using destructive intensity (DI) value and its application to switching control for air type anti-vibration apparatus (AVA). AVAs are used for suppression of vibration in precision machining field. Previous work switched control of the AVA by using spectrum intensity (SI) value when seismic motion occurs. However, the calculation of SI value requires long computation time. In order to solve this problem, observation points were created in the distance from the AVA. However this method leads to the increase of cost. Moreover, it is difficult for an enterprise to use observation points. Then, this study proposes control system which estimates property of earthquake using only location of the AVA. This approach estimates characteristic of seismic motion by using both DI values. Simulation results demonstrated that DI value estimates property of seismic motion faster and proposal method could properly switch controller of AVA.

Free Research Field

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