| 航空发动机转速测量系统的设计 |
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| 引用本文： | 赵艳东,于林明,陈显利.航空发动机转速测量系统的设计[J].电子测量技术,2011,34(11):81-84. |
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| 作者姓名： | 赵艳东 于林明 陈显利 |
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| 作者单位： | 青岛科技大学自动化与电子工程学院 青岛 266042 |
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| 基金项目： | 青岛市科技计划基础研究项目基金 |
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| 摘 要： | 提出了1种数字脉冲式的测速发电机测速方法.利用电压比较器将正弦波转换为数字脉冲,并利用PLC的高速脉冲计数功能进行脉冲计数,通过软件编程对数据进行了计算分析.不仅结构简单,而且构建成本低.实验结果表明当发动机转速从10 r/min到3 000 r/min时,测速精度一直控制在0.1％以下,检测时间也保持在500 ms以...
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| 关 键 词： | 电压比较器 PLC 测速 航空发动机 |
Design for speed measuring system of aeroengine |
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| Zhao Yandong
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Yu Linming
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Chen Xianli.Design for speed measuring system of aeroengine[J].Electronic Measurement Technology,2011,34(11):81-84. |
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| Authors: | Zhao Yandong Yu Linming Chen Xianli |
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| Affiliation: | (College of Automation Electronic Engineering,Qingdao University of Science ＆ Technology,Qingdao 266042) |
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| Abstract: | A method for speed measurement by tachometer generator in digital pulse is proposed.Sine wave is transformed to digital pulse by voltage comparator.The digital pulse is counted by the function of rapid counting pulse of PLC.Data is calculated and analyzed by programming software.The design have not only simple constructions,but also low building cost.Experimental results demonstrate that the rate accuracy is always controlled below 0.1% and detection time is also controlled below 500 ms when engine speed is changed from 10 r/min to 3 000 r/min.The proposed method can measure the speed of Aeroengine accurately in real time.The method has the merits of high accuracy,resolution and real-time etc when the speed is over a wide range. |
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| Keywords: | voltage comparator PLC speed measurement aeroengine |
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