首页|期刊导航|哈尔滨工业大学学报（英文版）|Fuzzy control on automatic frequency tracking of ultrasonic vibration system with high power and high quality factor Q
哈尔滨工业大学学报（英文版）2009，Vol.16Issue(2)：275-278,4.
Fuzzy control on automatic frequency tracking of ultrasonic vibration system with high power and high quality factor Q
Fuzzy control on automatic frequency tracking of ultrasonic vibration system with high power and high quality factor Q
摘要
Abstract
In order to realize automatic tracking drift of resonance frequency of ultrasonic vibration system with high power and high quality factor Q, adaptive fuzzy control was studied with a self-fabricated ultrasonic plastic welding machine. At first, relations between amplitude of vibration and frequency as well as main loop current and amplitude of vibration were analyzed. From this analysis, we deduced that frequency tracking process of the vibration system can be concluded as an optimizing problem of one dimensional fluctuant extremum of main loop current in vibration system. Then a method of self-optimizing fuzzy control, used for the realization of automatic frequency tracking in vibration system, is presented on the basis of self-optimizing adaptive control approach and fuzzy control approach. The result of experiments shows that the fuzzy self-optimizing method can solve the problem of tracking frequency drift very well. Response time of tracking in the system is less than 50 ms, which basically meets the requirements of frequency tracking in ultrasonic plastic welding machine.关键词
automatic frequency tracking/fuzzy control/ultrasonic vibration system/resonant frequencyKey words
automatic frequency tracking/fuzzy control/ultrasonic vibration system/resonant frequency分类
通用工业技术引用本文复制引用
ZHU Wu,ZHANG Jia-min,LIU Hong-li,MENG Feng-feng,ZHANG Zhi-ming..Fuzzy control on automatic frequency tracking of ultrasonic vibration system with high power and high quality factor Q[J].哈尔滨工业大学学报（英文版）,2009,16(2):275-278,4.基金项目
Sponsored by the Natural Science Foundation of Shanghai Education Committee (Grant No. 05LZ13), Shanghai Leading Academic Discipline Project (Grant No. P1303) and Shanghai Elitist Project(Grant No. 04YQHB126). （Grant No. 05LZ13）
