A method of circuit design based on the experimental analysis of high-intensity ultrasonic transducer and the numerical analysis of zero current soft switching inverter using current overlapping commutation

2003 ◽  
Author(s):  
H. Kifune ◽  
Y. Hatanaka
Keyword(s):  
Numerical Analysis ◽  
Circuit Design ◽  
Experimental Analysis ◽  
High Intensity ◽  
Ultrasonic Transducer ◽  
Soft Switching ◽  
Zero Current

Experimental and Numerical Analysis for Two Kinds of Impact Vibration of Gear

2011 ◽  
Vol 141 ◽  
pp. 43-48 ◽  
Author(s):  
Lin Yu Su ◽  
Yi Qiang Sun ◽  
Jian Ming Wen
Keyword(s):  
Numerical Analysis ◽  
Experimental Analysis ◽  
Dynamic Responses ◽  
Elastic Model ◽  
Motion Equations ◽  
Elastic Boundary ◽  
Mechanical Models ◽  
Impact Vibration ◽  
Dynamic Bifurcation ◽  
Impact Models

In this paper, there are two kinds of impact vibration models: rigid impact model and elastic model. The dynamic responses of the two kinds of gear impact models are compared by experimental and numerical analysis. Firstly, establish the motion equations of the two models. Secondly, verify the correctness of the mechanical models through experimental analysis. Comparing the results of the numerical and experimental analysis, we can find that the intensity noise of gear vibration is reduced by the elastic boundary. Finally, the dynamic bifurcation characteristic of dimensionless excitations magnitude and backlash will be analyzed as well.

scholarly journals Soft Switching of Full-Bridge DC-DC Buck Converter

2020 ◽  
pp. 561-565
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Distribution Systems ◽  
Buck Converter ◽  
Soft Switching ◽  
Power Supplies ◽  
Power Circuit ◽  
Zero Voltage Switching ◽  
Zero Current Switching ◽  
Zero Current

The conventional Bidirectional Full-bridge dc -dc converter is inefficient and may not be practical for the low power applications. This paper specifies an efficient DC-DC Converter that avoids power losses by using soft switching techniques like Zero Voltage Switching and Zero Current switching. The soft switching of Bidirectional Full-bridge DC-DC Converter operates as a buck converter when the power is positive and as a boost converter when the power flow is negative. Applications of soft switching Bidirectional Full-bridge DC-DC Converter are uninterrupted power supplies (UPS), distribution Systems, battery charger circuits, telecom power supplies, computer power systems. Detailed analysis of the converter is carried out in buck mode to obtain relations between the power circuit parameters. Based on the analysis, control schemes are described to operate the converter. The proposed full bridge DC-DC converter is simulated in Buck mode using MATLAB /SIMULINK.

Efficiency analysis on a piezoelectric micro-machined ultrasonic transducer as a high intensity wave generator in air

2012 ◽  
Vol 131 (4) ◽  
pp. 3498-3498
Author(s):  
Haksue Lee ◽  
Yub Je ◽  
Wonkyu Moon ◽  
Young-Nam Na ◽  
Hee-Seon Seo ◽  
...  
Keyword(s):  
High Intensity ◽  
Ultrasonic Transducer ◽  
Efficiency Analysis ◽  
Wave Generator ◽  
Intensity Wave
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