A frequency-tracking FPGA chip for high-power ultrasound resonator

Kai Hsing Ma, Wen Chung Chang, Yung Chun Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

An ultrasound welding system is basically a piezoelectric structure resonator working at high power. It usually induces heat and results in high temperatures and hence changes the impedance-frequency characteristic. Therefore, a control method to track the resonating frequency becomes very important in stabilizing the ultrasound welding system. In this research, we provide a new control method using a FPGA chip to sweep and catch frequency of the high-power amplifier for especially an ultrasonic apparatus or system. The FPGA basically have two circuits. One circuit is to sweep and catch the working frequency. The other circuit is to adjust the oscillator frequency simultaneously. This control method was implemented on a practical ultrasound welding system currently used in industries. The result proves that the new method can effectively control and automatically rack a proper frequency for the ultrasound welding system.

Original languageEnglish
Title of host publication2009 4th International Conference on Innovative Computing, Information and Control, ICICIC 2009
Pages1409-1411
Number of pages3
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 4th International Conference on Innovative Computing, Information and Control, ICICIC 2009 - Kaohsiung, Taiwan
Duration: 2009 Dec 72009 Dec 9

Publication series

Name2009 4th International Conference on Innovative Computing, Information and Control, ICICIC 2009

Other

Other2009 4th International Conference on Innovative Computing, Information and Control, ICICIC 2009
CountryTaiwan
CityKaohsiung
Period09-12-0709-12-09

All Science Journal Classification (ASJC) codes

  • Computational Theory and Mathematics
  • Computer Networks and Communications
  • Software

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