• Title/Summary/Keyword: Self-Sensing Actuator(SSA)

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Robust Control Simulation of a Composite Beam using Self-Sensing Actuators (Self-Sensing 작동기를 이용한 복합재 보의 강인제어 시뮬레이션)

  • 권대규;최병용;이성철
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.04a
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    • pp.284-287
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    • 2001
  • This paper presents the robust control simulation of a composite beam using self-sensing actuators(SSA). The self-sensing actuator is a new concept for intelligent material, where a single piezoelectric element simultaneously functions as both a sensor and an actuator. In a practical implementation of the self-sensing actuator an electrical bridge circuit is used to measure strain. The circuit could provide significant information about strain in the element if it were well-balanced. Our aim is design a robust controller which guarantees that the performance of a self-sensing actuator is robust against perturbation of the bridge balance and to confirm the advantages of this technique. Simulation results show that the self-sensing actuator driven by the designed controller exhibits excellent performance in suppressing the vibration of a composite beam.

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Vibration Control of the Rotation Position Mechanism with Dual Actuator for High Precision Control (고속/고정밀 위치 제어를 위한 이중 구동기를 이용한 회전 이송기구의 진동 제어)

  • Lee, Yong-Gwon;Jo, Won-Ik;Yang, Hyeon-Seok;Park, Yeong-Pil
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.4
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    • pp.203-208
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    • 2001
  • In this paper, a novel dual-type positioning mechanism using a voice coil motor(VCM) and a piezoelectric actuator is proposed for optical disk drive or near-field recording type drive. The VCM is used for a coarse motion actuator and the piezoelectric actuator, "S" configuration deflection motion when voltage applied, is used for a fine motion actuator with self-sensing technique, which allows it to sense and actuate simultaneously in a closed loop frame work. When the VCM rotates and stops, a position feedback control algorithm is adopted to further control residu vibration. The performance of the control scheme is confirmed through simulations and experiments.

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