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将分布的压电传感器 /驱动器运用于智能板结构的主动减振控制中 ,分布的压电传感器能感知结构的局部应变状态 ,并通过控制回路反馈给驱动元件 ,构成闭环控制。建立了智能板闭环控制的分析模型 ,揭示在应变率反馈下 ,主动控制的机理是增加了结构的阻尼。用两对压电陶瓷元件仿真了柔性板的闭环控制 ,获得了令人满意的结果
The distributed piezoelectric sensor / driver is applied to the active damping control of the smart board structure. The distributed piezoelectric sensor can sense the local strain state of the structure and feedback to the driving components through the control loop to form the closed-loop control. The analytical model of the closed-loop control of the smart board is established, revealing that the mechanism of active control is to increase the damping of the structure under the strain rate feedback. The closed-loop control of the flexible board was simulated with two pairs of piezoceramic elements, with satisfactory results