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General optimization of sizes or placement for various sensors/actuators in structure testing and control

机译：在结构测试和控制中对各种传感器/执行器的尺寸或位置进行总体优化

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In structural dynamics control and modal identification, the different types of sensors and actuators used and their location and size generally result in different frequency response functions (FRFs) and thus affect the peak magnitude of each mode shown on the FRF curves. Consequently, this also affects the control effect for structural dynamics due to the inadequate recognition of the contributions of each mode to the structural responses. This paper presents a general method of optimizing the location and the size of various types of sensor and actuator, such as accelerometers, shakers, and force transducers as point-type sensors and actuators, and piezoceramic patches as distributed strain-type sensors and actuators for structural excitation, testing, and control. Based on the concept of controllability and observability in the control of the second order linear system, the general criterion is established considering the peak gain and the dc gain obtained based on the FRFs. Those FRFs that can be obtained by analysis or testing, when combined with the proposed objective criterion, provide a function for ranking the effectiveness of alternative sensor/actuator locations and sizes, and hence a rational basis for choosing their parameters. The method can be easily applied and has been proven to be very promising on the optimal parameter selection for both point-type and strain-type sensors and actuators. Finally, several case studies have been conducted to demonstrate the practicality of the proposed method together with experimental results.
机译：在结构动力学控制和模式识别中，所使用的不同类型的传感器和执行器及其位置和大小通常会导致不同的频率响应函数（FRF），从而影响FRF曲线上所示每种模式的峰值。因此，由于对每个模式对结构响应的贡献的认识不足，这也影响了对结构动力学的控制效果。本文提出了一种优化各种类型的传感器和执行器的位置和尺寸的通用方法，例如加速度计，振动器和力传感器（作为点型传感器和执行器）以及压电陶瓷贴片（作为分布式应变型传感器和执行器）用于结构激励，测试和控制。基于二阶线性系统控制中的可控性和可观察性的概念，考虑了基于FRF获得的峰值增益和直流增益，建立了通用准则。与建议的客观标准结合使用时，可以通过分析或测试获得的那些FRF提供了一种功能，用于对替代传感器/执行器位置和尺寸的有效性进行排名，从而为选择其参数提供了合理的依据。该方法可以轻松应用，并且已被证明对于点型和应变型传感器和执行器的最佳参数选择非常有前途。最后，进行了一些案例研究，以证明所提出方法的实用性以及实验结果。

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