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A Digitally Controlled Drive System for Travelling-wave Ultrasonic Motor
Ultrasonic motor digital control speed control
2009/7/28
A digitally controlled drive system was implemented in this study to control the speed and direction of a travelling-wave ultrasonic motor. The drive system, based on a 2-phase voltage-fed high-freque...
Parameters That Influence the Ultrasonic Bond Quality
Parameters the Ultrasonic Bond Quality the ultrasonic bond system
2010/12/27
This paper summarizes some non-destructive ultrasonic bond quality test methods. Systems described in the literature are mainly based on monitoring the deviation of the vibration amplitude during weld...
Ultrasonic Ball/Wedge Bonding of Aluminium Wires
Ultrasonic Ball/Wedge Bonding Aluminium Wires
2011/1/21
The process of ball/wedge bonding and its advantages are described. A capacitor discharge technique for the formation of balls on 25 and 75 μm diameter aluminium wires is discussed. Ultrasonic welding...