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IDENTIFYING A TRANSFER FUNCTION FROM A FREQUENCY RESPONSE

机译:从频率响应中识别传递函数

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摘要

In this paper, the classic Levy identification method is reviewed and reformulated using a complex representation. This new formulation is able to solve the well known bias of the classic method at low frequencies. The formulation is generic, addressing both integer order and fractional order transfer functions. A new algorithm based on a stacked matrix and its pseudo-inverse is proposed to accommodate the data over a wide range of frequencies. Several simulation results are presented, together with a real system identification. This system is the Archimedes Wave Swing, a prototype of a device to convert the energy of sea waves into electricity.
机译:在本文中,对经典的Levy识别方法进行了回顾,并使用复数表示法对其进行了重新表述。这种新的配方能够解决传统方法在低频时众所周知的偏差。该公式是通用的,处理整数阶和分数阶传递函数。提出了一种基于堆叠矩阵及其伪逆的新算法,可以在较宽的频率范围内容纳数据。给出了几个仿真结果,以及一个真实的系统识别。该系统是阿基米德波浪秋千,这是一种将海浪能量转换为电能的设备的原型。

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