| 近钻头电阻率随钻测量系统中电流激励源的设计 |
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| 引用本文： | 艾维平,邓乐,宋延淳. 近钻头电阻率随钻测量系统中电流激励源的设计[J]. 通信电源技术, 2012, 29(1): 41-43 |
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| 作者姓名： | 艾维平 邓乐 宋延淳 |
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| 作者单位： | 中国石油集团钻井工程技术研究院井下控制工程研究所,北京,100083 |
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| 摘 要： | 发射天线激励是近钻头电阻率随钻测量中的关键技术。文章提出了一种单极性正弦脉宽调制的电流激励源,详细论述SPWM等效面积法的原理,介绍基于数字信号控制器dsPIC33F的SPWM波形的产生方法,并给出了软件流程图。实验结果验证了该设计的可行性。
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| 关 键 词： | 电阻率测量 电流激励源 正弦脉宽调制 数字信号控制器 |
Design of Current Excitation Source in Near-Bit Resistivity Measurements While Drilling System |
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| AI Wei-ping,DENG Le,SONG Yan-chun. Design of Current Excitation Source in Near-Bit Resistivity Measurements While Drilling System[J]. Telecom Power Technologies, 2012, 29(1): 41-43 |
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| Authors: | AI Wei-ping DENG Le SONG Yan-chun |
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| Affiliation: | (CNPC Drilling Research Intitute Downhole Control Engineering Department,Beijing 100083,China) |
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| Abstract: | The excitation of the transmitting antenna is a key technology in near-bit resistivity measurements while drilling.This paper proposes a unipolar sinusoidal pulse width modulated current excitation source;discusses the principle of SPWM equivalent area in detail,introduces SPWM waveform generating method which based on the digital signal controller dsPIC33F and gives software flow chart.The experimental results confirmes the feasibility of the design. |
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| Keywords: | resistivity measurement current excitation source SPWM digital signal controller |
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