A low power ultrasonic welding machine powered by solar energy

2015 ◽  
pp. 2519-2522
Author(s):  
Yiwang Wang ◽  
Shuai Zhang
Keyword(s):  
Solar Energy ◽  
Low Power ◽  
Ultrasonic Welding ◽  
Welding Machine ◽  
Power Ultrasonic

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.

An Inexpensive Low-Power Ultrasonic 3-Dimensional Air Velocity Sensor

2019 ◽  
Author(s):  
Ali Ghahramani ◽  
Megan Zhu ◽  
Richard Przybyla ◽  
Michael Andersen ◽  
Syung Min ◽  
...  
Keyword(s):  
Low Power ◽  
Air Velocity ◽  
Velocity Sensor ◽  
3 Dimensional ◽  
Power Ultrasonic

Grain Refinement of LC9 Alloy by Low-Power Ultrasonic Vibration Melt Treatment

2012 ◽  
Vol 538-541 ◽  
pp. 1267-1271
Author(s):  
Le Ping Chen ◽  
Yan Yan Han ◽  
Quan Zhou
Keyword(s):  
Grain Size ◽  
Low Power ◽  
Grain Refinement ◽  
Ultrasonic Vibration ◽  
Turning Point ◽  
Treatment Temperature ◽  
Melt Treatment ◽  
Preheating Temperature ◽  
Power Ultrasonic ◽  
Treatment Changes

The influences of different preheating temperature of mold and treatment temperature on solidified structure of LC9 alloy were studied by low-power ultrasonic vibration melt-treatment. The results show that grain of LC9 alloy can be refined greatly by low-power ultrasonic vibration melt-treatment. The dendrite growth is restrained and the microstructure is changed from larger dendrite grains to dominant fine none-dendritic and globular grains. With the decrease of preheating temperature of mold, grain size decreases. The efficiency of grain refinement is better at low preheating temperature. With the increase of ultrasonic vibration temperature, grain size decreases firstly, then increases, and the turning point is 660 °C. At 640 °C, grain size of the alloy with US vibration treatment changes slightly compared with non US-treated alloy.

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