张合生,朱晓锦,高志远,李培江.基于LMS算法的数据采集系统动态传输特性研究[J].光电子激光,2015,26(1):96~102 |
基于LMS算法的数据采集系统动态传输特性研究 |
Research on data acquisition system transmission properties using LMS algorithm |
投稿时间:2014-09-05 |
DOI: |
中文关键词: 最小均方(LMS)算法 数据采集系统 FIR滤波器 动态传输特性 通道模型参数 |
英文关键词:least mean square (LMS) algorithm data acquisition system FIR filter dynamic transmission properties path model parameter |
基金项目:国家自然科学基金(51175319)、上海市教育委员会科研创新重点(13ZZ075)和上 海市电站自动化技术重点实验室资助项目 (1.上海大学 机电工程与自动化学院,上海 200072; 2.上海航天电子技术研究所,上海 201109) |
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中文摘要: |
提出了一种基于最小均方(LMS)算法的数据采集系 统动态传输特性获取方法。在建立数据采集系统FIR滤波器模 型的基础上,以正弦信号为系统输入,以采集处理后的实验数据为系统输出,利用LMS算法 反推系统的通 道模型参数,计算系统对正弦信号的幅度衰减、相位延迟和噪声参杂3个动态传输特性;在 方法研究的基 础上,搭建了相关实验验证平台,分别进行了系统仿真和硬件验证实验。仿真实验中,3个 动态传输特性的识别精度均在98%以上,证明了算法在理论上的可行性;硬件 验证实验中,传输特性的平均识别精度均在96%以上,表明本文所提数据采集系统动态传 输特性获取方法 有效可行,且具有很好的数据动态传输特性识别精度。 |
英文摘要: |
There is an important significance for the design,verification and impro vement of data acquisition system to obtain the transmission properties.To accurately obtain the dynamic transmis sion properties of data acquisition system,a data acquisition system based on least mean square (LMS) algorithm is proposed in this paper.An FIR filter model for the data acquisition system is constructed at first,then a sinusoidal signal is used as system i nput,and the acquisition signal is take n as the system output.Finally,the system path parameters are computed using LMS algorithm to obtain the dynamic t ransmission properties, including amplitude attenuation,phasic translation and mixed noise.Based on re search of theory,an experimental platform is built,both simulation experiment and hardware verifica tion are done,and then the experiment data is analyzed and compared.In the simulation,the rec ognition accuracies of three dynamic transmission properties are all above 98%,proving the feasibility of the algorithm in theory.In the Hardware validation,the average recognition accuracies are all higher than 96%,which indicates that the proposed method is effective and feasible to obtai n data acquisition system transmission properties with high-precision for dynamic transmission. |
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