Study on complicated nonlinear phenomena in ultrasonic infrared thermography using circuit simulation method

2014 ◽  
Author(s):  
Kai Zheng ◽  
Jiang Zheng ◽  
Shu-yi Zhang
Keyword(s):  
Infrared Thermography ◽  
Circuit Simulation ◽  
Simulation Method ◽  
Nonlinear Phenomena ◽  
Ultrasonic Infrared Thermography

Effects of crack surface roughness on crack heat generation characteristics of ultrasonic infrared thermography

2020 ◽  
Vol 106 ◽  
pp. 103262
Author(s):  
Lihong Dong ◽  
Bozheng Wang ◽  
Haidou Wang ◽  
Ming Xiang ◽  
Xi Chen ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Infrared Thermography ◽  
Heat Generation ◽  
Crack Surface ◽  
Ultrasonic Infrared Thermography

scholarly journals Research on Output Waveform of Generator with Rectifier Load considering Commutation Overlap Angle

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Bingyi Zhang ◽  
Gongfei He ◽  
Guihong Feng
Keyword(s):  
Circuit Simulation ◽  
Harmonic Distortion ◽  
Simulation Method ◽  
Conduction Time ◽  
Current Waveform ◽  
Voltage Waveform ◽  
Rectifier Circuit ◽  
Output Waveform ◽  
Output Side ◽  
Distortion Rate

The purpose of this paper is to study the influence of the uncontrolled rectifier circuit on the generator’s output waveform when considering the commutation overlap angle. Taking the nonsalient permanent magnet (PM) generator directly connected with the uncontrolled rectifier circuit as an example, the equivalent circuit of the generator with rectifier load is established, and the commutation process of the rectifier circuit is analyzed when the effect of the commutation overlap angle is considered. The output waveforms of generator’s output side are obtained by analytical method, circuit simulation method, field-circuit coupled simulation method, and experimental method. The validity of the analysis methods is demonstrated by comparison. According to the results of analytical analysis, we know the characteristics of the output waveform under the influence of the commutation overlap angle. The existence of the commutation overlap angle will cause the voltage waveform to concave or convex, prolong the conduction time of the winding, and result in phase difference between the voltage waveform and current waveform. The influence of synchronous inductance and extra inductance on the output waveforms and harmonic distortion rate is analyzed. The research of this paper provides a theoretical basis for improving the output waveform of the generator with rectifier load.

The Application of Fault Injection Using Circuit Simulation in Testability Verification

2013 ◽  
Vol 347-350 ◽  
pp. 937-941
Author(s):  
Yuan Wei Yin ◽  
Chao Xuan Shang ◽  
Yan Heng Ma ◽  
Gang Li
Keyword(s):  
Fault Injection ◽  
Circuit Simulation ◽  
Simulation Method ◽  
Structure And Function ◽  
Injection System ◽  
Injection Method ◽  
Injection Technology ◽  
And Function

The fault injection technology is an important aspect in testability verification, because the actual fault injection in equipment can damage itself, so using circuit simulation fault injection method to instead. Research on the simulation method that based on PSPICE, using VC++ software to design a simulated fault injection system, its structure and function to achieve workflow introduced. Finally, taking a circuit for example uses the system to fault injection and analysis to prove the availability and correctness of the system.

scholarly journals Distributed Circuit Simulation using Combined Simulation Method

2019 ◽  
Vol 1325 ◽  
pp. 012197
Author(s):  
Chen-Jung Chen ◽  
Tai-Ning Yang ◽  
Chih-Jen Lee ◽  
Jen-Dong Sun ◽  
Sheng-Hsuan Hsu
Keyword(s):  
Circuit Simulation ◽  
Simulation Method ◽  
Combined Simulation

Discriminate the substrate crack under sprayed coatings using ultrasonic infrared thermography

2019 ◽  
Vol 102 ◽  
pp. 103073
Author(s):  
Wei Guo ◽  
Lihong Dong ◽  
Haidou Wang ◽  
Zhiguo Xing ◽  
Fuzhou Feng ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Ultrasonic Infrared Thermography ◽  
Sprayed Coatings

Analysis on Equivalence between Transfer Function and Equivalent Circuit Simulation in General Hamiltonian Modeling

2012 ◽  
Vol 204-208 ◽  
pp. 4896-4899
Author(s):  
Jing Qian ◽  
Yun Zeng ◽  
Li Xiang Zhang ◽  
Tian Mao Xu
Keyword(s):  
Transfer Function ◽  
Equivalent Circuit ◽  
Circuit Simulation ◽  
Hamiltonian Function ◽  
Simulation Method ◽  
Generator System ◽  
Time Simulation ◽  
Internal Parameters ◽  
Hamiltonian Model ◽  
System Stabilizer

Take generator system included AVR (automatic voltage regulator) and PSS (power system stabilizer) as an example, Using the time simulation method, Study the equivalence between the transfer function model and the equivalent circuit simulation, and establish the corresponding relations between the circuit structures, internal parameters and transfer function parameters, based on the energy of equivalent circuit, the Hamiltonian function of transfer function is derived indirectly, and the Hamiltonian model is established. The study in this paper provides a new way to establish generalized Hamiltonian model for linear system based on transfer function.

A New Algorithm for Isomorphism Determination of Undirected Graphs-Circuit Simulation Method

2010 ◽  
Vol 30 (5) ◽  
pp. 1115-1130 ◽  
Author(s):  
Huiliang Shang ◽  
Feng Li ◽  
XianDing Tang ◽  
Peng-Yung Woo
Keyword(s):  
Circuit Simulation ◽  
Simulation Method ◽  
Undirected Graphs
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