| 一类非线性系统的参数估计 |
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| 引用本文： | 丁锋,刘景皤,肖永松.一类非线性系统的参数估计[J].控制工程,2011,18(3):373-376,409. |
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| 作者姓名： | 丁锋 刘景皤 肖永松 |
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| 作者单位： | 江南大学,控制科学与工程研究中心,江苏,无锡,214122 |
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| 基金项目： | 国家自然科学基金资助项目资助(60973043) |
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| 摘 要： | 考虑有色噪声干扰的Hammerstein非线性系统的辨识,通过梯度搜索原理推导了增广投影算法,简化增广投影算法和增广随机梯度辨识算法.基本思想是将增广信息向量中的未知噪声项用其估计残差代替.增广投影算法对噪声非常敏感,增广随机梯度算法的收敛速度慢,为了解决这些不足,在增广随机梯度算法中引入遗忘因子,来改善参数估计精度,...
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| 关 键 词： | 递推辨识 参数估计 投影算法 随机梯度 Hammerstein模型 |
Parameter Estimation for a Class of Nonlinear Systems |
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| DING Feng,LIU Jing-fan,XIAO Yong-song.Parameter Estimation for a Class of Nonlinear Systems[J].Control Engineering of China,2011,18(3):373-376,409. |
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| Authors: | DING Feng LIU Jing-fan XIAO Yong-song |
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| Affiliation: | DING Feng,LIU Jing-fan,XIAO Yong-song(Control Science and Engineering Research Center,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | The identification problems of Hammerstein nonlinear systems with colored noise are considered.An extended projection algorithm,a simplified extended projection algorithm and an extended stochastic gradient(ESG) identification algorithm are presented by using the gradient search principle.The basic idea is to replace the unmeasurable noise terms in the extended information vectors with their estimates.Since the extended projection algorithm is sensitive to noise and the ESG algorithm has a slow convergence ... |
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| Keywords: | recursive identification parameter estimation stochastic gradient projection Hammerstein model |
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