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首页> 外文会议>International Conference on Adaptive Structures and Technologies; 20051009-12; Paris(FR) >ADAPTIVE FEEDFORWARD CONTROL OF VIBRATION OF A BEAM WITH ACTIVE-PASSIVE DAMPING TREATMENTS: NUMERICAL ANALYSIS AND EXPERIMENTAL IMPLEMENTATION
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ADAPTIVE FEEDFORWARD CONTROL OF VIBRATION OF A BEAM WITH ACTIVE-PASSIVE DAMPING TREATMENTS: NUMERICAL ANALYSIS AND EXPERIMENTAL IMPLEMENTATION

机译：主动-被动阻尼处理的梁振动自适应前馈控制：数值分析和实验实现

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摘要

This paper concerns the adaptive feedforward control of vibration of a freely supported beam with active-passive damping treatments using the filtered-reference LMS algorithm. Two distinct damping treatments are bonded on the beam and the aim is to compare the damping performances of the control configurations when the beam is excited by a broadband voltage disturbance applied into another piezoelectric patch. The first configuration concerns the use of an Active Constrained Layer Damping (ACLD) patch alone, where the piezoelectric constraining layer is actively utilized to increase the shear deformation of the passive viscoelastic layer and at the same time to transmit efforts to the structure, which will balance the power flows into the structure, and is denoted by ACLD configuration. The second configuration regards the use, as an active element in the control, of the piezoelectric patch alone, denoted by Active Damping (AD), and since the constraining layer of the ACLD treatment also bonded on the beam is not actively utilized, a Passive Constrained Layer Damping (PCLD) treatment is utilized in combination with AD, yielding an AD/PCLD configuration. A finite element (FE) model is used for the simulation of the adaptive feedforward controller which is also implemented in real-time.
机译：本文涉及采用滤波参考LMS算法的主动-被动阻尼处理的自由支撑梁的振动自适应前馈控制。在梁上结合了两种不同的阻尼处理，目的是比较当梁受到施加到另一个压电贴片上的宽带电压干扰而激发时，控制配置的阻尼性能。第一种配置仅涉及主动约束层阻尼（ACLD）贴片的使用，其中压电约束层被主动利用以增加无源粘弹性层的剪切变形，同时将力传递给结构，这将平衡功率流入结构，并由ACLD配置表示。第二种配置是将有源贴片（AD）表示为单独使用压电贴片作为控制中的有源元件，并且由于没有主动利用也粘结在梁上的ACLD处理的约束层，因此无源约束层阻尼（PCLD）处理与AD结合使用，产生AD / PCLD配置。有限元（FE）模型用于自适应前馈控制器的仿真，该控制器也可以实时实现。

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