Engineering Research
Study on the Energy Coupling Relationship between ESD and PCB
With the quick development of electronics industry,Electrostatic discharge become more and more dangerous to various microelectronic devices and electronic systems which has become one of the imperative problem needed to resolve.To master the coupling mechanism and the relationship of energy coupling between electronic system and ESD is the pivotal way to solve the problem.Currently,we do [...]
Research on the Electromagnetic Coupling Law of Small Shielding Enclosure under Reverberation Chamber Condition
Shielding Effectiveness(SE) theory of small size shielding enclosures is one of the important part of EMC field.Most of the Electronic devices belong to small size shielding enclosures,but there isn’t international testing standard.Because of the defects of traditional SE definition,the practical shielding effective can’t reflect under complex electromagnetic environment.Reverberation Chamber Room testing method using average power(or [...]
The Study on the Filtering of the Measurement of the Warp’s Tension
With the trawl fishing has hold the dominant position in the capture fishery gradually,the requirements of the automation of the trawlboats are getting higher and higher,the performance impact on the fishing capacity and the production costs directly,and the measurement of the warp’s tension is an important aspects of it.When the trawlboat is fishing,people can know [...]
Practical Analysis and Design Technology of PWM Switching Power Supply
The trends on miniaturization, low power, and high efficiency have grasped the low-voltage electrical devices together with the switching power supply.There are two objectives of this thesis: (1) One is based on their advantages and disadvantages to analyze the structure of power supply control IC, from testing one simple low dropout regulator (LDO) to focusing [...]
Full Bridge Phase-Shifted Soft-switching Multi-Arc Power Supply
The researching in switching power supply includes many technology fields such as power electronics.autocontrol and so on.High frequency, the modularization, the digitization are the objects of of development of switching power supply. The main way to realizes the high frequency is the soft-switch technology, and the full bridge phase-shifted zero voltage pulse width modulation converter [...]
Full Bridge Phase-Shifted Soft-switching Multi-Arc Power Supply
The researching in switching power supply includes many technology fields such as power electronics.autocontrol and so on.High frequency, the modularization, the digitization are the objects of of development of switching power supply. The main way to realizes the high frequency is the soft-switch technology, and the full bridge phase-shifted zero voltage pulse width modulation converter [...]
The Design of Electroplating Current-sharing Control System of Digital Power Supply
With the increasing output current of the switch-mode power supply, compared to the single large module, paralleled power modules have significant advantages in supplying large output current. A flexible and economic distributed power system becomes a trend, and the current balance is one of the key issues during the design of a paralleled power system. [...]
Design of the Zoom Camera Lens within Cell Phone
With the improvement of zoom lens optical system design theory and processing technology,the type of zoom lens is growing rapidly.In particular,various types of optical system design software improve the efficiency of the zoom lens design;camera lens has been widely applied in various areas of life.In this case,it is undoubted the great significance of studying the [...]
Study on the High-definition Time Measurement for the Time-Difference Location System
In the modern war,the hidden detection and a high-definition positioning accuracy makes the time-difference locating system become a main way to realizing the passive locating.But its locating accuracy is impacted by various factors and constrains,of which the measurement accuracy of the pulse TOA(time of arrival) is the key factor.With the continuous improvement of the modern [...]