| 复杂多变量过程模型的闭环频域辨识 |
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| 引用本文： | 王亚刚 许晓鸣. 复杂多变量过程模型的闭环频域辨识[J]. 控制与决策, 2010, 25(6): 825-830 |
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| 作者姓名： | 王亚刚 许晓鸣 |
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| 作者单位： | 上海理工大学,光电信息与计算机工程学院,上海,200093 |
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| 基金项目： | 上海市自然科学基金项目(08ZR1415500);;上海市科委重点攻关计划项目(072305126);;上海市教委科研创新项目(09YZ213) |
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| 摘 要： | 针对模型预测控制中模型辨识存在的问题,提出一种多变量过程闭环辨识方法.首先通过对多变量闭环系统正常运行产生的输入输出信号进行信号分解和频谱分析,得出多变量过程对象在重要频率段上的频率响应特性矩阵;然后采用最小二乘法,在幅值和相位两方面拟合一个二阶加纯滞后模型结构;最终获得一个多变量传递函数模型矩阵.仿真实验表明,该闭环辨识方法适用于广泛的多变量过程对象,具有很好的鲁棒性和精确性.
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| 关 键 词： | 模型辨识 多变量过程 闭环回路 频率响应 |
| 收稿时间： | 2009-07-29 |
| 修稿时间： | 2010-01-18 |
Closed-loop modeling identification for multivariable processes in the frequency domain |
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| WANG Ya-gang,XU Xiao-ming. Closed-loop modeling identification for multivariable processes in the frequency domain[J]. Control and Decision, 2010, 25(6): 825-830 |
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| Authors: | WANG Ya-gang XU Xiao-ming |
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| Affiliation: | WANG Ya-gang,XU Xiao-ming School of Optical-Electrical , Computer Engineering,University of Shanghai for Science , Technology,Shanghai 200093,China |
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| Abstract: | A technique of closed-loop identification for multi-variable processes is proposed to solve the problems of identification for model predictive control.On the basis of multi-variable process input and output data during the normal closed-loop operation,the process frequency-response matrix is estimated with signal decomposition and frequency spectrum analysis,and the second order plus time delay model matrix is identified by using the linear least-squares method.Simulation examples show the robustness and a... |
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| Keywords: | Modeling identification Multivariable process Closed-loop Frequency response |
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