| 基于GA-LS指数衰减正弦信号参数估计算法 |
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| 引用本文： | 董拯,彭程,王永. 基于GA-LS指数衰减正弦信号参数估计算法[J]. 电子技术, 2010, 37(10): 13-16 |
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| 作者姓名： | 董拯 彭程 王永 |
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| 作者单位： | 中国科学技术大学自动化系 |
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| 摘 要： | 本文提出基于GA-LS指数衰减正弦信号的参数估计方法,根据系统模型特性将待估计参数分成两类,非线性类和线性类,将遗传算法和最小二乘法估计结合起来对参数进行估计。在观察与分析信号的频域特征后,确定各非线性部分的参数范围,采用遗传算法在参数空间里搜索,再用当下最优的非线性类参数,通过最小线性二乘法确定线性类参数。通过缩小了遗传算法的搜索空间维数,考虑了系统的线性部分参数间的约束关系,达到提高参数的搜索效率,提高参数的估计精度。大量仿真实验表明算法收敛速度优于标准遗传算法,精度高。用于估计冲击实验的采集信号满足实际需要。
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| 关 键 词： | 遗传算法 最小二乘 参数估计 |
Parameter Estimation of Exponentially Damped Sinusoids Based on GA-LS Method |
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| Dong Zheng,Peng Cheng,Wang Yong. Parameter Estimation of Exponentially Damped Sinusoids Based on GA-LS Method[J]. Electronic Technology, 2010, 37(10): 13-16 |
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| Authors: | Dong Zheng Peng Cheng Wang Yong |
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| Affiliation: | Dong Zheng Peng Cheng Wang Yong(Department of Automation,University of Science and Technology of China) |
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| Abstract: | A parameter estimation method for exponentially damped sinusoids based on GA-LS is proposed here.According to the features of system model the parameters to be estimated can be divided system into two parts,the linear form part and the nonlinear form part.The genetic algorithm and least-squares method are combined to estimate the parameters of the exponentially damped sinusoids.After the observation and analysis of signal character in frequency domain,the parameter range of various nonlinear parts is prelim... |
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| Keywords: | genetic algorithm least-squares parameter estimation |
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