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Vibration Control of Beam Containing ER Fluid Using PPF Control Scheme  

Yun Shin-Il (경남대학교 기계자동화공학부)
Chin Do-Hun (부경대학교 기계공학부 대학원)
Yoon Moon-Chul (부경대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.3, 2005 , pp. 32-37 More about this Journal
Abstract
Several types of smart materials and control scheme are available to adjust the structure actively in various external disturbances. A control scheme was introduced for a specific material. But the effectiveness of the control scheme has some limitation according to the choice of the smart materials and the response of the structure. The ER(Electrorheological) fluid is adequate for a large control force, and the PZT(lead zirconate titanate) patches are suitable for small but arbitrary control force at any point of the structure. It can be used for active control of structure by changing the dynamic characteristics of the structure. But it has some difficulty in suppressing the excited vibration in broad band. To compensate this resonance of the controlled structure, a hybrid controller was constructed using PPF(Positive position feedback) control with PZT and ER fluid control.
Keywords
Smart material; ER fluinds(Electrorheological fluids); PPF(Positive position feedback); Piezoelectric Ceramics;
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