The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The reliability of solder interconnects in electronic packages is of vital importance. However, the demand for rapid product development puts an urgent need to develop new and fast testing methods and protocols for accurate crack initiation and propagation measurements for the new generation lead free solder. The failure is mainly due to two consecutive processes: viscoplastic deformation ultimately...
This paper presents a robotic automated battery sorting system. Robotic battery sorting algorithm is developed, implemented and tested. A battery measurement device is integrated with an ABB IRB120 robot to conduct the battery sorting test; a pneumatic driven probe station is connected to a measurement device and controlled by the robot controller to coordinate the battery picking-measuring-placing...
Light Emitting Diodes (LED) are being implemented more and more into demanding applications like automotive and high-brightness general lighting. From the reliability point of view, the automotive environment is extremely harsh and challenging. Automotive electronics have to withstand exposure to high temperature fluctuations, mechanical shock impacts and vibration. The cyclic thermal load of solder...
Some superconducting magnets research at IMP (Institute of Modern Physics, CAS, Lanzhou) will be described in this paper. Firstly, a superconducting electron cyclotron resonance ion source (SECRAL) was successfully built to produce intense beams of highly charged heavy ions for Heavy Ion Research Facility in Lanzhou (HIRFL). An innovation design of SECRAL is that the three axial solenoid coils are...
The paper proposes a control strategy for three-phase pulse width modulated (PWM) voltage source converter (VSC) used in distributed grid-connected generation system. The key is to take the current of inductor in the filter as feedback to regulate the output current, with the addition of a feed-forward control scheme into the inner current loop. The paper explores the fundamental performance issues...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.