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非均匀多采样率非线性系统的模糊辨识

DOI: 10.13195/j.kzyjc.2014.1023, PP. 1646-1652

Keywords: 模糊辨识,多率,非均匀采样,非线性系统

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Abstract:

针对非均匀多采样率非线性系统辨识问题,提出一种基于模糊模型的辨识方法.首先,分析了非线性系统在输入信号非均匀周期刷新,输出信号周期采样的情况下,非线性系统可以通过提升技术,利用多个局部的线性模型加权组合来描述;然后,提出一个基于GK模糊聚类和递推最小二乘的模糊辨识算法;最后,针对化工pH中和过程非线性系统,采用非均匀采样数据建立其模糊模型,以验证所提出方法的有效性.

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