Load-adaptive frequency tracking control implementation of two-phase resonant inverter for ultrasonic motor

2002 ◽  
Author(s):  
S. Furuya ◽  
T. Maruhashi ◽  
Y. Izuno ◽  
M. Nakaoka
Keyword(s):  
Tracking Control ◽  
Ultrasonic Motor ◽  
Two Phase ◽  
Frequency Tracking ◽  
Resonant Inverter ◽  
Control Implementation

Automatic Frequency-Tracking Control for Ultrasound Welding System

2011 ◽  
Vol 204-210 ◽  
pp. 2041-2044
Author(s):  
Kao Feng Yarn ◽  
King Kung Wu ◽  
Kai Hsing Ma ◽  
Wen Chung Chang
Keyword(s):  
High Power ◽  
Tracking Control ◽  
Control Method ◽  
Ultrasonic Welding ◽  
Automatic Frequency ◽  
Frequency Tracking ◽  
Power Ultrasonic ◽  
Fpga Chip ◽  
Working Frequency ◽  
Welding System

A new frequency-tracking control method to catch the optimal working frequency for the high power ultrasonic welding system is proposed. In a high power ultrasonic resonant system, the induced high temperature will change the working frequency. Therefore, the proposed control method to track the optimal working frequency becomes very attractive and important. This control method is practically implemented by a FPGA chip which basically includes two logic circuits. One logic circuit is to find the optimal working frequency automatically and the other one is to adjust the working frequency by detecting the working current simultaneously. Experimental results exhibit the new method can effectively control and track frequency for high power ultrasonic welding system.

Frequency tracking control of the WPT system based on fuzzy RBF neural network

2021 ◽  
Author(s):  
Yuanyuan Liu ◽  
Fei Liu ◽  
Hongwei Feng ◽  
Guoxin Zhang ◽  
Lu Wang ◽  
...  
Keyword(s):  
Neural Network ◽  
Tracking Control ◽  
Rbf Neural Network ◽  
Frequency Tracking
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