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In this paper, a wavelet-based statistical method is proposed for health monitoring and fault diagnosis. This method integrates the statistical process control technology and the discrete wavelet transform. A statistical indicator based on discrete wavelet transform is constructed, and the X-bar chart is used to monitor the indicator. The fault frequency can be identified in the Hilbert envelope spectrum...
Onew360 is a training simulator for simulating gas metal arc welding (GMAW) welding. This system is comprised of standard welding hardware components (helmet, gun, work-piece), a PC, a head-mounted display, a tracking system for both the torch and the user's head, and external audio speakers. The track model of welding simulator using single-camera vision measurement technology to calculate the position...
It is difficult to implement three-dimensional (3D) measurement in small field of view (FOV) or confined space with traditional sensors, for they cannot be put into or operated flexibly in such circumstances. To solve the problem, a sensor constructed by an electronic endoscope and a pair of mirrors is designed, combining the flexible characteristics of the endoscope transmission wire and the advantages...
A novel barometric altimeter system for the application of vehicular test of SINS has been designed and implemented in this paper. The barometric altimeter system has been designed to give altitude and speed information of the vehicle. The main part of the barometric altimeter system consists of the pitot tube, the gas circuit, high-precision sensors, one PXI acquisition computer and user programme...
The hemispherical resonator gyro (HRG) is a vibration gyro with high accuracy, long life and great reliability. Analyzing and studying its output signal is one of the key techniques to science evaluating performance. This paper presents the principle of the HRG, induces the Allan variance methods, and uses the MATLAB programming to simulate and calculate. Itpsilas the first time in China to apply...
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