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Study and Improving of Dynamic Electric Contact Testing System

Author: WangYingHui
Tutor: XuLiangJun
School: Beijing University of Posts and Telecommunications
Course: Detection Technology and Automation
Keywords: The dynamic electrical contact test Contact resistance Micro simulation Contact pressure
CLC: TM934
Type: Master's thesis
Year: 2009
Downloads: 63
Quote: 0
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Abstract


Between components of the electronic system , the circuit between the device between the existence of a large number of electrically connected inside the device is also true . By external environmental factors such as mechanical vibrations, electromagnetic force, the thermal stress cycle , the small amplitude of the relative movement generated between the electrically connected to the contact surface known as fretting . Fretting caused by fretting wear or fretting corrosion, thereby reducing its contact properties will result in the contact resistance value of the connector increases . Dynamic electrical contact with the test system is dynamically plane - spherical electrical contact performance testing experiment system collectively . Dynamic electrical contact test system is mainly applied to the micro electric contact failure mechanism analysis , currently consists of two subsystems : the the micro electrical contact testing system and precise positioning of electrical contact test system . Micro electrical contact testing system testing Samples electrical contact performance under the experimental simulation of fretting . Precision positioning electrical contact testing system precision positioning to fretting corrosion failure zone test fretting corrosion of electrical contact performance . Electrical contact performance of two sets of system testing , the contact resistance . Improved electrical contact fretting test system consists of three parts : an analysis of the impact of micro- moving trip accuracy , and proposed to increase the accuracy of the program ; introduction of the force sensor to respond to dynamic changes of the contact pressure micro experiment combined with the force sensor to improve the existing systems, the contact pressure load with the holding structure design ; analysis of the contact resistance of the four-point method \Precision positioning electrical contact testing system improvements , including : improved the existing contact pressure loading and unloading , servo motor life ; the servo motor Samples impact reduce load contact pressure .

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CLC: > Industrial Technology > Electrotechnical > Electrical measurement techniques and instruments > Lumped parameter,the distribution parameter measurement and instrumentation
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