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Incremental sheet metal forming is a novel kind of flexible forming technology widely used in industry. This technology has been applied in ship hull plate forming field, showing many advantages over traditional production processes such as high forming limit, high degree of automation and good adaptability to plate shapes. This paper introduces the development of an eight-axis open CNC system for...
According to the infrared imaging mechanism, this paper proposes a Nonuniformity Correction(NUC) enhancement method to improving the image quality of Infrared system. analyzing the connection between the responsivety and the nonuniformity of each pixel on infrared focal plane array (IRFPA), gain and offset coefficients were updated gradually, calculating the image of a scene threshold gray level information,...
The flight control system is the core of small unmanned gyroplane, in this paper, micro controller AT91M55800A chosen from ARM7 series is used to construct the control platform. In order to improve the stability and robustness of small unmanned gyroplane, this paper puts forward a kind of PID controller which based on improved Differential Evolution Algorithm so that the gyroplane can finally achieve...
This paper presented a high speed data acquisition system for real-time appLication. The hardware of system mainly consists of data acquisition, distribution and storage section. A 3Gsps ultra high-speed ADC is appLied in acquisition section. In distribution section, the original data stream will be distributed into four streams. Each data stream will be stored into one soLid-state storage card which...
A critical step in fingerprint recognition is to skeletonize the fingerprint image for minutiae extraction, which is recognized as "thinning" in image processing. The speed and reliability of the thinning process are important for the whole fingerprint identification system. In this paper, to accelerate the thinning process, a fast hardware thinning algorithm is implemented on the Xilinx...
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