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We propose a new reliability evaluation technology by using &#x201C;Pulse-Photoconductivity Method&#x201D; to measure the electrical and dielectrical properties of the insulator sample directly and non-destructively. We evaluate the electrical characteristics of SiO<inf>2</inf> and HfO<inf>2</inf> film by measuring the transient phenomenon of(More)
This paper is focused on control method of piezoelectric actuator through &#x201C;Variable Frequency Drive&#x201D; to get out the friction state and avoid abrasion. The NRUSM is used as piezoelectric actuator; AC voltage at constant amplitude sine wave has applied to input voltage, where drive frequency profile is designed according to the principle of(More)
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