RF Performance Test Analysis of 3G UE

2006 ◽  
Author(s):  
Sang Lin ◽  
Liupeizhi
Keyword(s):  
Performance Test ◽  
Test Analysis ◽  
Rf Performance

Research on the Performance of Strain Sensors Applied to Bridges

2014 ◽  
Vol 875-877 ◽  
pp. 680-684
Author(s):  
Zhi Liu ◽  
Jing Liu ◽  
Shu Ri Cai
Keyword(s):  
Health Monitoring ◽  
Performance Test ◽  
Strain Sensor ◽  
Safety Monitoring ◽  
Strain Sensors ◽  
Great Role ◽  
Temperature Drift ◽  
Short Life ◽  
Test Analysis ◽  
Health Monitoring System

Strengthening safety monitoring of bridges during service time and improving the capability of emergency support have become the priority of the development of China’s present transportation system. Strain sensors play a great role in bridge detection and health monitoring system. In order to overcome disadvantages of traditional resistance strain sensors, such as big temperature drift, short life and inadaptability in the environment of low temperature and humidity, new arch strain sensors have been developed. This paper mainly discusses the structural and material characteristics of this sensor, as well as the performance test analysis of this strain sensor.

Research on the Anti-Vibration Technology of Large Cross-Section Conductor

2013 ◽  
Vol 457-458 ◽  
pp. 522-526
Author(s):  
Jun Zhang ◽  
Kuan Jun Zhu ◽  
Zhen Liu ◽  
Xue Ping Zhan
Keyword(s):  
Cross Section ◽  
Performance Test ◽  
Power Transmission ◽  
Normal Operation ◽  
Large Cross Section ◽  
Element Analysis ◽  
Test Analysis ◽  
Vibration Effect ◽  
The Finite Element Analysis ◽  
Vibration Technology

The conductor is an important part of the process of power transmission. Keep conductor to be normal operation is an important link of power transmission. In practice, Due to the influence of many weather environments, such as wind, temperature, rain and snow, the conductor often appear ice disaster, dance and other disasters; therefore, the anti-vibration technology of conductor is an urgent need to develop. This paper masters the performance of damper by carrying out a great deal of performance test analysis, such as self-damping, the power of damper, anti-vibration effect. At the same time, this paper understands the effect of spacer arrangement on the sub span oscillation, through the finite element analysis and lingo program of nonlinear programming, laying the foundation for studying anti-vibration technology for large cross-section conductor.

RF performance test and current operations of LHRF and ICRF heating systems on JT-60

1987 ◽  
Author(s):  
T. Imai ◽  
T. Nagashima ◽  
H. Kimura ◽  
K. Uehara ◽  
K. Annoh ◽  
...  
Keyword(s):  
Performance Test ◽  
Heating Systems ◽  
Rf Performance ◽  
Icrf Heating

scholarly journals Research on performance test analysis method of mechanical structure based on measured error / virtual simulation

2022 ◽  
Vol 355 ◽  
pp. 03072
Author(s):  
Beilei Wang
Keyword(s):  
Performance Test ◽  
Test Method ◽  
Virtual Simulation ◽  
Simulation Technology ◽  
Simulation Test ◽  
Vibration Acceleration ◽  
Test Analysis ◽  
Mechanical Structure ◽  
Profile Errors ◽  
Two Peaks

Mechanical errors seriously affect the transmission performance of mechanical structure, especially for high-precision mechanical structure. With the development of virtual simulation technology, the performance test of mechanical structure in virtual environment is gradually applied. Under the background, this paper takes the movable tooth reducer as the research object and puts forward a virtual performance test method by combing test errors with virtual simulation technology. The tooth profile errors of key components of the reducer are obtained by optical scanning, and the simulation test is carried out. Meanwhile, the accuracy of the simulation test is verified by the implementation of vibration test. The results show that both the simulated vibration acceleration and the experimental test vibration acceleration show a double-peak variation trend, and the frequency difference between the two peaks is less than 5%. Therefore, the simulation test method proposed in this paper can effectively evaluate the performance of mechanical structures.

scholarly journals Mechanical Performance Test and Analysis of DC Charging Cable for Electric Vehicles

2020 ◽  
Vol 185 ◽  
pp. 01070
Author(s):  
Lin Li ◽  
Zhiyong Xiao ◽  
Guiping Lu
Keyword(s):  
Mechanical Properties ◽  
Electric Vehicles ◽  
Performance Test ◽  
Mechanical Performance ◽  
Tension Test ◽  
Comparative Test ◽  
Electrical Performance ◽  
Test Accuracy ◽  
Test Analysis ◽  
Electric Vehicle Charging

The mechanical performance of the cable is directly related to the electrical performance of the cable, and even affects the safety, reliability and durability of the whole charging process. Electric vehicle charging cable is different from the traditional wire and cable, which has higher requirements for the mechanical properties of the cable. In this paper, the tension test is carried out on the insulation or sheath of the cable. By observing the phenomenon of "slipping" and "end breaking" in the process of the test, the structure of the flat push collet is optimized. It can be seen from the comparative test analysis that the improved chuck mechanism has a great effect on improving the test accuracy and reliability

scholarly journals Psychophysiological changes during workspace virtualization

2021 ◽  
Vol 6 (2) ◽  
pp. 66-74
Author(s):  
I. V. Tarasova ◽  
M. S. Nikitenko ◽  
O. A. Trubnikova ◽  
I. N. Kukhareva ◽  
D. S. Kupriyanova ◽  
...  
Keyword(s):  
Cognitive Load ◽  
Performance Test ◽  
Short Term Memory ◽  
Spatial Perception ◽  
Brain Activity ◽  
Psychometric Testing ◽  
Test Analysis ◽  
Before And After ◽  
Rhythm Activity ◽  
The Brain

Aim. To estimate psychophysiological changes during workspace virtualization.Materials and Methods. We evaluated the psychophysiological profile of 10 healthy right-handed males aged 25 to 45 years before, during and after the working in a virtual reality (VR) headset. All participants had higher education, normal or corrected to normal vision, and were experienced computer users. Psychometric testing included a neurological examination, assessment of functional and feedback-related brain activity (reaction time, errors, and missed signals) and attention span, quantification of processed symbols in the 1st and 4th minutes of Bourdon test, analysis of short-term memory (10 words, 10 numbers and 10 meaningless syllables memorization) and spatial perception, and multi-channel electroencephalography recording in rest.Results. Deterioration of psychometric indicators after a cognitive load in a VR headset was documented only in the most difficult tasks: the number of errors increased by 93% in the brain performance test and by 65% in the attention distribution test. The analysis of electroencephalography data showed that the delta rhythm and theta1 rhythm activity decreased by 28 and 13%, respectively, after working in a VR headset as compared to baseline values, while alpha1 rhythm activity increased by 96%. Probably, the observed electroencephalography changes corresponded to the patterns of brain activation associated with cognitive load and the resulting fatigue.Conclusions. We developed a suitable approach for the psychometric testing before and after working in VR headset, which demonstrated general tolerance and acceptable subjective difficulties to VR load. 

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