Application of adaptive filtering algorithm to the stability problem for double crystal monochromator. Part I: Typical filtering algorithms
Application of adaptive filtering algorithm to the stability problem for double crystal monochromator. Part I: Typical filtering algorithms
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自适应滤波算法在双晶单色仪稳定性问题中的应用
DOI：
10.1016/j.nima.2022.167924
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Zhen Zhang
中科院分区：
文献类型：
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作者：
Yang Bai;Xuepeng Gong;Qipeng Lu;Yuan Song;Wanqian Zhu;S. Xue;Dazhuang Wang;Zhong;Zhen Zhang
双晶单色器是同步辐射装置中的关键光束线器件之一。随着同步辐射源X射线束线性能的不断提高和第四代同步辐射源的不断应用，对DCM的稳定性提出了更高的要求。根据以往的工程经验，液氮冷却系统是影响DCM稳定性的最关键因素。本文研究了FxLMS算法的振动抑制性能（滤波器-x最小均方），FxNLMS（滤波器-x归一化最小均方），FxSDLMS（滤波器-x符号-数据最小均方），FxSELMS（过滤器-x符号误差最小均方）和FxSSLMS在Bragg@12.66 KeV和Bragg@9 KeV工作条件下，对SSRF DCM的实测振动信号进行了验证（滤波器-x符号-符号最小均方）（上海同步辐射装置）。结果表明，FxNLMS算法与其他典型滤波算法相比，具有更高的收敛精度、优良的振动抑制性能和抗未知干扰的能力。
The double crystal monochromator (DCM) is one of the critical beamline devices in synchrotron radiation facilities. With the continuous improvement of the performance of the X-ray beamline of synchrotron radiation sources and the constant application of fourth-generation synchrotron radiation sources, higher requirements for the stability of the DCM have been introduced. Based on previous engineering experience, the LN2cooling system is the most critical factor affecting DCM’s stability. In this paper, the vibration suppression performance of FxLMS (filter-x Least Mean Square), FxNLMS(filter-x Normalized Least Mean Square), FxSDLMS(filter-x Sign-Data Least Mean Square), FxSELMS(filter-x Sign-Error Least Mean Square) and FxSSLMS(filter-x Sign-Sign Least Mean Square) are verified under Bragg@12.66 KeV and Bragg@9 KeV operating conditions for the measured vibration signals of DCM at SSRF(Shanghai Synchrotron Radiation Facility). The results show that the FxNLMS algorithm has higher convergence accuracy, excellent vibration suppression performance, and the ability to counter unknown disturbances compared with other typical filtering algorithms.
Photon Factory 蛋白质微晶体学光束线 BL-17A 的 X 射线光束稳定
DOI：
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发表时间：
2008
期刊：
Journal of Synchrotron Radiation 15
影响因子：
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作者：
S. S. PHARTYAL;T. KONDO;Noriyuki Igarashi
通讯作者：
Noriyuki Igarashi