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Fractional hammerstein system identification using particle swarm optimization

机译:基于粒子群算法的分数阶Hammerstein系统辨识

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Fractional systems are known to model complex dynamics with a reduced number of parameters. This paper deals with identification of discrete fractional order systems based on non-linear Hammerstein models. Such systems consist of a static non-linear block followed by a linear dynamic system. The polynomial non-linear state space equations (PNLSS) are used to represent the fractional Hammerstein system. In this study, a Particle Swarm Optimization algorithme(PSO)is used to identify the Hammerstein system parameters. Different simulations test the method fitting ability to approximate the non linear fractional system behaviour at various signal to noise ratios.
机译:分数系统已知以较少数量的参数对复杂的动力学建模。本文研究了基于非线性Hammerstein模型的离散分数阶系统的识别。这样的系统由静态非线性块和线性动态系统组成。多项式非线性状态空间方程(PNLSS)用于表示分数Hammerstein系统。在这项研究中,使用粒子群优化算法(PSO)来识别Hammerstein系统参数。不同的仿真测试了在各种信噪比下逼近非线性分数系统行为的方法拟合能力。

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