A Novel Excitation Source Model for Analysis of Rhombic Antenna Characteristics

2014 ◽  
Vol 1 (2) ◽  
pp. 76-86
Author(s):  
Fan Yin ◽  
◽  
Chengyou Yin
Keyword(s):  
Source Model ◽  
Excitation Source ◽  
Antenna Characteristics

Pressure Pulsations by a Centrifugal Compressor at Blade Passing Frequency

2007 ◽  
Author(s):  
Itsuro Hayashi ◽  
Shigehiko Kaneko
Keyword(s):  
Centrifugal Compressor ◽  
Evaluation Method ◽  
Source Model ◽  
Excitation Source ◽  
Maximum Pressure ◽  
Pressure Amplitude ◽  
Pressure Pulsations ◽  
Blade Passing Frequency ◽  
Practical Evaluation ◽  
Piping Systems

Pressure pulsations excited by a centrifugal compressor or fan at blade passing frequency may cause severe noise and vibrations in piping systems. Therefore, the practical evaluation method of pressure pulsations is strongly required. In this study, a one-dimensional excitation source model for a compressor was proposed based on the equation of motion. An experiment was performed for the validation of this model. As a result, the relation of the maximum pressure amplitude in piping systems to the location of the excitation source under resonant conditions can be evaluated by introducing the equivalent resistance of the compressor and that of piping systems. The role of the system resistance to the response of pressure pulsations is discussed in detail.

Micro- Inductively Coupled Plasma as Excitation Source Used for Qualitative Analysis of Gas Sample

2013 ◽  
Vol 41 (12) ◽  
pp. 1923
Author(s):  
Yong-Qing WANG ◽  
Jin-E LI ◽  
Ying-Chang ZHOU ◽  
Rong-Xia SUN ◽  
Na CHONG
Keyword(s):  
Qualitative Analysis ◽  
Inductively Coupled Plasma ◽  
Excitation Source ◽  
Inductively Coupled
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