Control characteristics of an automatic matching control system for in vivo EPR spectroscopy
Control characteristics of an automatic matching control system for in vivo EPR spectroscopy
复制标题
体内EPR光谱自动匹配控制系统的控制特性
DOI：
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发表时间：
2003
影响因子：
3.3
通讯作者：
Zhiwei Luo
中科院分区：
文献类型：
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作者：
H. Hirata;Y. Yamaguchi;Tatsuhisa Takahashi;Zhiwei Luo
介绍了一种估计体内电子顺磁共振（EPR）光谱自动匹配控制（AMC）系统特性的方法。AMC也被称为自动耦合控制（ACC），用于补偿由于被测动物的运动而引起的扰动。推导了AMC系统的开环函数，并对系统的特性（增益、相位裕度、稳态误差、系统带宽和抗干扰性）进行了研究。该方法得到了实验结果的支持。用1.1 GHz连续波EPR光谱仪测量了麻醉大鼠运动扰动的频率响应。AMC系统还考虑了麻醉大鼠呼吸运动和心跳的干扰抑制，这些干扰在光谱仪的二极管检测器输出功率谱中降低了约40 dB。中华医学杂志，2003,25(3):344 - 344。©2003 Wiley‐Liss, Inc。
A method for estimating the characteristics of an automatic matching control (AMC) system for in vivo electron paramagnetic resonance (EPR) spectroscopy is described. AMC is also known as automatic coupling control (ACC) and is used to compensate for perturbation due to movement of the subject animal. The open‐loop function of the AMC system is derived and the characteristics (gain, phase margin, steady‐state error, system bandwidth, and disturbance rejection) of the system are examined. The proposed method is supported by experimental findings. The frequency response of perturbation due to the movement of an anesthetized rat was measured with a 1.1‐GHz continuous‐wave EPR spectrometer. Disturbance rejection with the AMC system was also considered for respiratory motion and the heartbeat of the anesthetized rat, and these perturbations were reduced by about 40 dB in the power spectrum of the output of the diode detector in the spectrometer. Magn Reson Med 50:223–227, 2003. © 2003 Wiley‐Liss, Inc.
影响因子：
2.2
作者：
Yong, L;Harbridge, J;Halpern, HJ
通讯作者：
Halpern, HJ