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Electromagnetic emission from information technology equipment (ITE) can cause the information leakage. The eavesdroppers can reconstruct the information operated on the marked equipment by eavesdropping the electromagnetic radiation. In this paper, we design a method to detect whether existing character information in the leakage signal and located them automatically using machine learning algorithms...
Master-slave motion mapping method based on time-varying coefficients is proposed for the dexterous hand driven by ultrasonic motors. In order to evaluate the performance of motion mapping qualitatively, Feature Point Sets(FPSs) of dexterous and human hands are built to describe the whole configurations of both in Cartesian space, and then, a cost function based on generalized Euclidean norm of FPS...
A new type of linear motor based on non-resonant vibration with piezoelectric stacks has been investigated. The sandwich-type structure of stator has been produced according to the mechanical properties and the operating principles of piezoelectric stacks. The elliptical trajectory can be excited at driving top and its motion principle has been deduced theoretically. Piezoelectric stacks have extraordinary...
A new type of linear motor based on non resonant vibration with piezoelectric stacks was investigated. The operation principle of the motor was studied basing on the output characteristic of the piezoelectric stack. The elliptical trajectory could be excited at driving top which was proved theoretically. The structure of the motor was designed and a prototype machine was fabricated. The testing of...
Diamond-like carbon (DLC) films were deposited on 2Cr13 stainless steel, 40Cr and 20Cr low-alloy steel using a multi-function ion-beam assisted deposition device, and their mechanical performance and anti-corrosion behavior were studied. The results show that dual ion-beam bombardment and mixing technology raises the compound hardness of DLC film and substrate, which increases and then decreases with...
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