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LQR control with frequency-dependent scheduled gain for a semi-active floor isolation system
https://nied-repo.bosai.go.jp/records/4060
https://nied-repo.bosai.go.jp/records/406032c2f6f7-e6b0-4678-9d9e-b60c133ac601
| Item type | researchmap(1) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-30 | |||||||||||||||
| タイトル | ||||||||||||||||
| 言語 | en | |||||||||||||||
| タイトル | LQR control with frequency-dependent scheduled gain for a semi-active floor isolation system | |||||||||||||||
| 著者 |
Yundong Shi
× Yundong Shi
× Tracy C. Becker
× Sachi Furukawa
× Eiji Sato
× Masayoshi Nakashima
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||
| 内容記述 | SUMMARY: Floor isolation is an alternative to base isolation for protecting a specific group of equipment installed on a single floor or room in a fixed-base structure. The acceleration of the isolated floor should be mitigated to protect the equipment, and the displacement needs to be suppressed, especially under long-period motions, to save more space for the floor to place equipment. To design floor isolation systems that reduce acceleration and displacement for both short-period and long-period motions, semi-active control with a newly proposed method using the linear quadratic regulator (LQR) control with frequency-dependent scheduled gain (LQRSG) is adopted. The LQRSG method is developed to account for the frequency characteristics of the input motion. It updates the control gain calculated by the LQR control based on the relationship between the control gain and dominant frequency of the input motion. The dominant frequency is detected in real time using a window method. To verify the effectiveness of the LQRSG method, a series of shake table tests is performed for a semi-active floor isolation system with rolling pendulum isolators and a magnetic-rheological damper. The test results show that the LQRSG method is significantly more effective than the LQR control over a range of short-period and long-period motions. © 2013 John Wiley & Sons, Ltd. | |||||||||||||||
| 言語 | en | |||||||||||||||
| 書誌情報 |
en : Earthquake Engineering and Structural Dynamics 巻 43, 号 9, p. 1265-1284 |
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| ISSN | ||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||
| 収録物識別子 | 1096-9845 | |||||||||||||||
| DOI | ||||||||||||||||
| 関連識別子 | 10.1002/eqe.2352 | |||||||||||||||
