Research on the Frequency Automatic Tracking in Ultrasonic Power Based on Fuzzy-DPLL

Bai Da Qu; Zheng Long Ni

doi:10.4028/www.scientific.net/AMR.760-762.1053

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 760-762Research on the Frequency Automatic Tracking in...

Research on the Frequency Automatic Tracking in Ultrasonic Power Based on Fuzzy-DPLL

Abstract:

Traditional frequency-tracking technique of ultrasonic power often adopts analog phase locked loop circuit. But it has some defects, such as the narrow locked-inrange and the tendency to lose phase locked with a sudden change in load, etc. Therefore, this paper proposes a composed control strategy which combines a digital fuzzy controller with phase locked loop in DSP, and the working principle and design method are gived. The experimental results show that the ultrasonic power using Fuzzy-DPLL can realize quick and accurate frequency tracking, and it can make the vibrate system work stably and efficiently, and it improves the efficiency of the power supply.

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Periodical:

Advanced Materials Research (Volumes 760-762)

Pages:

1053-1057

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.760-762.1053

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Online since:

September 2013

Authors:

Bai Da Qu, Zheng Long Ni

Keywords:

Frequency Tracking, Fuzzy Controller, Phase Locked Loop, Ultrasonic Power

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References

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