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Robust vibration suppression control...

Zhou, Li.

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Robust vibration suppression control profile generation.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Robust vibration suppression control profile generation./
作者:	Zhou, Li.
面頁冊數:	289 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1144.
Contained By:	Dissertation Abstracts International66-02B.
標題:	Engineering, Mechanical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3167394
ISBN:	0542030187

Robust vibration suppression control profile generation.
Zhou, Li.

Robust vibration suppression control profile generation. - 289 p.

Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1144.

Thesis (Ph.D.)--Oklahoma State University, 2005.

Scope and method of study. The control of flexible structures has been extensively studied in recent years. Flexible structures such as high-speed disk drive actuators require extremely precise positioning under very tight time constraints. Whenever a fast motion is commanded, residual vibration in the flexible structure is induced, which increases the settling time. One solution is to design a closed-loop control to damp out vibrations caused by the command inputs and disturbances to the plant. However, the resulting closed-loop response may still be too slow to provide an acceptable settling time. Also, the closed-loop control is not able to compensate for high frequency residual vibration which occurs beyond the closed-loop bandwidth. An alternative approach is to develop an appropriate reference trajectory that is able to minimize the excitation energy imparted to the system at its natural frequencies.

ISBN: 0542030187Subjects--Topical Terms:

783786
Engineering, Mechanical.

Robust vibration suppression control profile generation.
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245 1 0 $a Robust vibration suppression control profile generation.
300 $a 289 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1144.
500 $a Adviser: Eduardo A. Misawa.
502 $a Thesis (Ph.D.)--Oklahoma State University, 2005.
520 $a Scope and method of study. The control of flexible structures has been extensively studied in recent years. Flexible structures such as high-speed disk drive actuators require extremely precise positioning under very tight time constraints. Whenever a fast motion is commanded, residual vibration in the flexible structure is induced, which increases the settling time. One solution is to design a closed-loop control to damp out vibrations caused by the command inputs and disturbances to the plant. However, the resulting closed-loop response may still be too slow to provide an acceptable settling time. Also, the closed-loop control is not able to compensate for high frequency residual vibration which occurs beyond the closed-loop bandwidth. An alternative approach is to develop an appropriate reference trajectory that is able to minimize the excitation energy imparted to the system at its natural frequencies.
520 $a Findings and conclusions. A robust control profile is generated which suppresses all the high frequency vibrations in a flexible dynamic system. This robust control profile is the shifted time-limited version of the functions that optimally achieve the energy concentration property. The robust control profile is designed by considering the first resonance frequency. In practical system, a lower resonance frequency mode may exist which is located far from the high frequency resonance modes. In this case, a robust control profile is generated which suppresses one specific resonant mode in a flexible dynamic system. This robust control profile is a smooth function which can be used as a robust velocity profile, or as a robust shape filter to an arbitrary control command. The robustness can be arbitrarily improved, which brings about a smoother profile. Combination of high frequency vibration suppression control profile and low frequency vibration suppression control profile generates a robust vibration suppression control profile that is able to suppress all the resonant dynamics in a flexible dynamic system. The technique can be applied to both open-loop and closed-loop systems.
590 $a School code: 0664.
650 4 $a Engineering, Mechanical. $3 783786
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710 2 0 $a Oklahoma State University. $3 626630
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790 1 0 $a Misawa, Eduardo A., $e advisor
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791 $a Ph.D.
792 $a 2005
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