Zhilun Gui

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Experiments show that there is a limited minimum stepped angle in ultrasonic motors (USM). The research on the minimum angle of stepper USM with 15 mm in diameter and wobbling mode is being carried out. This paper presents a novel way to decrease the minimum stepped angle of USM based on the principle of differential composite motion (DCM), i.e. clockwise(More)
Microwave dielectric ceramics with the composition of (1-x)Ba(Ni<inf>1/2</inf>W<inf>1/2</inf>)O<inf>3</inf>-xBaTiO<inf>3</inf> (x = 0.1&#x2013;0.5) were prepared by a solid-state reaction method. A cubic-to-hexagonal phase transition occurred from x = 0.15 to 0.5, where the cubic double perovskite structure transformed into the h-BaTiO<inf>3</inf>-type(More)
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