4 June 1999 Active suppression of plate vibration with piezoceramic actuators/sensors using multiple adaptive feedforward with feedback loop control algorithm
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Abstract
This paper presents a methodology to suppress the vibration of thin rectangular plate clamped all edges. Intelligent materials such as the piezoelectric ceramic are used as actuators and sensors. The experimental modeling technique, i.e., the state-space frequency domain identification, is introduced to model the complex shaped structures bonded with noncollocated actuators/sensors. This method is much free from the Multi-Input Multi-Output (MIMO) model order problem caused at the digital implementation and also reduces distortion of the signal. In control scheme, the adaptive feedforward with feedback control algorithm is adopted since it is robust for both the transient and persistent external disturbances. The adaptive feedforward control uses the well known Multiple filtered-x LMS (least mean square) algorithm. The MIMO error path dynamics is controlled by the feedback loop which is constructed by multivariable digital LQG (Linear Quadratic Gaussian) controller composed of the regulator and Kalman filter. Experiment results demonstrate the effective reduction of the vibration label and the robustness for both the transient and persistent external disturbances.
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Yeung-Shik Kim, Yeung-Shik Kim, Insoo Kim, Insoo Kim, Chul Lee, Chul Lee, Chan Young Moon, Chan Young Moon, } "Active suppression of plate vibration with piezoceramic actuators/sensors using multiple adaptive feedforward with feedback loop control algorithm", Proc. SPIE 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures, (4 June 1999); doi: 10.1117/12.350105; https://doi.org/10.1117/12.350105
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