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《Chinese Journal of Sensors and Actuators》 2007-02
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New Measurement of Digital Frequency Based on Auto-Adapted and Equal-Precision Technique

WANG Shou-kun,LIN Bao-tao*,WANG Jun-zheng(Department of Automatic Control,School of Information Sc ience and Technology,Beijing Institute of Technology,Beijing 100081,Chian)  
A kind of frequency measurement technique which adopt s a new method of adaptive and equal-precision is introduced.By comparison with traditional measurements,this measurement solves the equal-precision problem o n account of the existence of count error by ±1 successfully.Adopting adaptive subparagraph-installed optimal time-limit gate,it eliminates deficiency caus ed by the delay of the predetermined gate,simplifies circuit structure,and ach ieves the purpose of broad scope and high-precision measurement.Microcomputer is applied to design software and hardware system of this frequency measurement.The actual experimental data show that the frequency arranging from 0.01 Hz to 500 kHz can be measured exactly and measurement accuracy is above 0.001 Hz.
【CateGory Index】: TM935.1
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【References】
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