| 引用本文: | 冯雅君,彭志瑾.某随动系统动态模型相关——最小二乘辨识[J].控制理论与应用,1986,3(3):52~60.[点击复制] |
| Feng Yajun, Pen Zijin.DYNAMIC MODEL IDENTIFICATION OF A SERVO SYSTEM BY CORRELATION-LEAST SQUARES[J].Control Theory and Technology,1986,3(3):52~60.[点击复制] |
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| 某随动系统动态模型相关——最小二乘辨识 |
| DYNAMIC MODEL IDENTIFICATION OF A SERVO SYSTEM BY CORRELATION-LEAST SQUARES |
| 摘要点击 1107 全文点击 1128 投稿时间：1984-09-12 修订日期：1985-06-18 |
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| DOI编号 |
| 1986,3(3):52-60 |
| 中文关键词 |
| 英文关键词 |
| 基金项目 |
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| 中文摘要 |
| 本文应用相关仪对某随动系统进行在线辨识，得到系统的非参数模型——脉冲函数。在此基础上利用最小二乘法拟合成参数模型—系统的差分方程。通过双线性z变换，变换为连续数学模型——传递函数。并做阶跃响应检验，辨识得到的系统动态模型的阶跃响应与实际系统的阶跃响应基本一致。在随机干扰作用下，由此方法得到的动态模型较频率测试法或理论分析的结果更为精确。 |
| 英文摘要 |
| In this paper, an on-line identification for a servo system performed with a Pseudo-Random Signal-Correlation Analyzer is introduced. The identified nonparametric models are in the form of impulse response. Based on the impulse response func-tions, the parametric models represented by difference equations are the obtained by least squares. The transfer function models describing the continuous system are finally obtained by using bilinear Z-transform.
The simulated step-response of the dynamic models are compared with the real ones. The results of them are shown to be basically identical. |
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