| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2023-03-30 |
| タイトル |
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|
タイトル |
Active Control Effect of Mechanical Vibration (Ⅰ) : Investigation for a Case of a Cantilever Beam System |
| 言語 |
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|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
active control |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
optimal regulator |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
material damping |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
minimal oder observer |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
lumped parameter modeling |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
cantilever |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
anti-vibration |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
sampling time. |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
川辺, 尚志
吉田, 和信
Kawabe, Hisashi
Yoshida, Kazunobu
|
| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
With a view to comparing the difference between the vibration suppressing effect by an active control and that by passive (material) damping, the active control of vibrations has been investigated in a sample of a cantilever beam structure with a single sensor and actuator, by constructing a feedback controller incorporating a 16 bit micro-computer PC9801VX21 especially enhanced by a numeric data processor i80287. As the modeling system, a lumped-parameter system is employed on account of reducing the processing time. The dynamic compensator as the system controller, including a minimal order type observer based on Gopinath's method, is designed on the optimal regulator, with the performance index being of the form J(u) =∫∞0(x’Qx +u'Ru)e2σtdt (:Q≧0, R>0). The sampling speed of 3msec is realized by using both C-language and assembly-one. When the feedback gain is set for σ=5, R=1 and Q=block diag [10, 10, 10, 10], the experimental results of a mechanical flexible objective (brass plate (320 x 35 x 4.15 mm3) are as follows: In the freely decaying vibration state, the active control effect increases the vibration damping properties from the damping capacity Q-1=0.004 to the higher damping Q-1ac=0.0798 (=20Q-1), while in the resonant state, the active damping also has the effect of suppressing the resonant amplitude to about 1/12. The pure active anti-vibration effect for the present system corresponds to about 3.3 times the maximum material damping Q-1m=0.023 measured in the practical high damping metal SIA. |
| 書誌情報 |
広島工業大学研究紀要
巻 24,
p. 129-140,
発行日 1990
|
| 出版者 |
|
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出版者 |
広島工業大学 |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
03851672 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN0021271X |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
kenkyukiyo24129.pdf (637.7 kB)
