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首页> 外文期刊>Journal of low frequency noise, vibration and active control >Piezoelectric optimal delayed feedback control for nonlinear vibration of beams
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Piezoelectric optimal delayed feedback control for nonlinear vibration of beams

机译:梁非线性振动的压电最优延迟反馈控制

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摘要

An optimal delayed feedback control methodology is developed to mitigate the primary and super harmonic resonances of a flexible simply-simply supported beam with piezoelectric sensor and actuator. Stable vibratory regions of the feedback gains are obtained by using the stability conditions of eigenvalue equation. Attenuation ratio is used to evaluate the performance of vibration control by taking the proportion of peak amplitude of primary or super harmonic resonances for the suspension system with and without controllers. Optimal control parameters are obtained using an optimal method, which takes attenuation ratio as the objective function and the stable vibratory regions of the time delay and feedback gains as constraint conditions. The piezoelectric optimal controllers are designed to control the dynamic behaviour of the nonlinear dynamic system. It is found that the optimal feedback gains obtained by the optimal method result in a good control performance.
机译:开发了一种最佳的延迟反馈控制方法,以减轻带有压电传感器和执行器的柔性简单支撑梁的一次和超次谐波共振。通过使用特征值方程的稳定性条件,可以获得反馈增益的稳定振动区域。使用带和不带控制器的悬架系统,通过获取初级或超谐波共振的峰值幅度的比例,可以使用衰减比来评估振动控制的性能。使用最优方法获得最优控制参数,该方法以衰减比为目标函数,以时滞和反馈增益的稳定振动区域为约束条件。压电最佳控制器设计用于控制非线性动态系统的动态行为。发现通过最佳方法获得的最佳反馈增益导致良好的控制性能。

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