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Researching of identification method of actuator's bandwidth
Author(s): 
Pages: 41-44
Year: Issue:  12
Journal: ELECTRONIC MEASUREMENT TECHNOLOGY

Keyword:  舵机带宽辨识递推最小二乘法加权系数遗忘因子;
Abstract: 本文首先简要介绍了电动舵机的工作特性和舵机模型的选取,给出舵机带宽的具体计算方法.详细研究了最小二乘辨识方法,其中重点讨论实现最小二乘的具体算法步骤.在分析了不同的输入信号对系统辨识造成的各种影响后,本文给出实验时对输入信号的具体要求以及视为野值的判决方法.基于特定的舵机辨识问题和高精度辨识的特性要求,本文选取参数递推估计策略作为具体的求解方法,并推导出详细的算法过程.明确阐述了加权系数和遗忘因子的具体用途,并用实验数据确定出加权系数和遗忘因子.最后验证了辨识结果的合法性和辨识模型的准确性.
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