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首页> 外文期刊>Journal of Sound and Vibration >Layout optimization methodology of piezoelectric transducers in energy-recycling semi-active vibration control systems
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Layout optimization methodology of piezoelectric transducers in energy-recycling semi-active vibration control systems

机译：能量回收半主动振动控制系统中压电换能器的布局优化方法

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摘要

An optimization methodology is proposed for the piezoelectric transducer (PZT) layout of an energy-recycling semi-active vibration control (ERSAVC) system for a space structure composed of trusses. Based on numerical optimization techniques, we intend to generate optimal location of PZTs under the constraint for the total length of PZTs. The design variables are set as the length of the PZT on each truss based on the concept of the ground structure approach. The transient problems of the mechanical and electrical vibrations based on the ERSAVC theory are considered as the equations of state. The objective is to minimize the integration of the square of all displacement over the whole analysis time domain. The sensitivity of the objective function is derived based on the adjoint variable method. Based on these formulations, an optimization algorithm is constructed using the fourth-order Runge-Kutta method and the method of moving asymptotes. Numerical examples are provided to illustrate the validity and utility of the proposed methodology. Using the proposed methodology, the optimal location of PZTs for the vibration suppression for multi-modal vibration is studied, which can be benchmark results of further study in the context of ERSAVC systems.
机译：针对由桁架组成的空间结构的能量回收半主动振动控制（ERSAVC）系统的压电换能器（PZT）布局，提出了一种优化方法。基于数值优化技术，我们打算在PZT总长度的约束下生成PZT的最佳位置。根据地面结构方法的概念，将设计变量设置为每个桁架上PZT的长度。基于ERSAVC理论的机械和电气振动的瞬态问题被视为状态方程。目的是在整个分析时域内最小化所有位移平方的积分。目标函数的灵敏度是基于伴随变量方法得出的。基于这些公式，使用四阶Runge-Kutta方法和移动渐近线方法构造了优化算法。数值例子说明了所提出方法的有效性和实用性。使用所提出的方法，研究了用于多模态振动抑制的PZT的最佳位置，这可以作为ERSAVC系统中进一步研究的基准结果。

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