Research on Anti-Jamming Technology of Variable Adjusting Speed System

2013 ◽  
Vol 385-386 ◽  
pp. 1205-1208
Author(s):  
Jiu Yan Zhou
Keyword(s):  
Frequency Conversion ◽  
Timing System ◽  
Electro Magnetic ◽  
Electro Magnetic Compatibility

In order to analysis the EMC(electro magnetic compatibility) of variable adjusting speed system, This paper firstly introduces the inverters jamming source, Then analyzes the jamming dissemination way, Finally gives the countermeasure of frequency conversion timing system anti-jamming.

Application of Frequency Conversion Technology in the Constant Pressure Water Supply System

2013 ◽  
Vol 457-458 ◽  
pp. 1623-1626
Author(s):  
Jing Bo Zhu ◽  
Yong Hua Zhang
Keyword(s):  
Water Supply ◽  
Frequency Conversion ◽  
Constant Pressure ◽  
Circuit Breaker ◽  
Supply System ◽  
Water Supply System ◽  
Dc Power ◽  
Controlling System ◽  
Pressure Water ◽  
Electro Magnetic

In order to solve the problem that the management of water-supply operation is still backward and the phenomenon of water resources wasting is exceedingly serious, this paper introduce some advanced technologies such as computer, frequency transformer, programmable logical controller (PLC) and so on into water-supply network, the constant pressure water supply system is devised to achieve the variable-frequency speed control by making use of the electric controlling system composed of S7-200PLC, MM440 frequency transformer, miniature circuit breaker, AC contactor, thermal relay, DC power supply, miniature electro-magnetic relay, sorts of indicator lights and host command devices.

Electro Magnetic Compatibility Noise Free Endoscope Using Optical Fiber Communication Technology

2008 ◽  
Vol 47 (8) ◽  
pp. 6819-6825 ◽  
Author(s):  
Wataru Kubo ◽  
Tadashi Minakuchi ◽  
Koichi Sato ◽  
Koichi Tsutamura ◽  
Takaaki Shoji ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Communication Technology ◽  
Optical Fiber Communication ◽  
Fiber Communication ◽  
Electro Magnetic ◽  
Electro Magnetic Compatibility

A Design of 3D EMC Scanning System

2013 ◽  
Vol 389 ◽  
pp. 1031-1034
Author(s):  
Ping Chen ◽  
Jie Zhang ◽  
Lei Chen ◽  
Lin Wang
Keyword(s):  
Electromagnetic Radiation ◽  
Three Dimensional ◽  
Single Component ◽  
Spectrum Analyzer ◽  
Host Computer ◽  
Scanning System ◽  
The Core ◽  
Electro Magnetic ◽  
Real State ◽  
Electro Magnetic Compatibility

3D Electro Magnetic Compatibility (EMC) Scanning system is based on a spectrum analyzer as the core, can provide the relevant parameters of the EMC quickly and accurately, and can be a single component, PCB, machine, cable-round three-dimensional test. Through the host computer, it can realize the visualization of electromagnetic radiation to show real state of electromagnetic radiation.

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