The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The popular existing de-noising methods are compared and analyzed, including wavelet packet decomposition, coefficient shrinkage and modulus maxima method of wavelet transform, which advantages and disadvantages are analyzed and summarized. So their suitable scopes and premise condition are obtained. To accurately analyze high frequency part of signal in submarine tunnel monitoring, the maxima method...
The double inverted pendulum system is hard to reach steady state, the mathematical model before the simulation and physical control experiment. And the system requires higher performance to the controller. So the improved genetic algorithm is introduced into the wavelet neural network controller. The trained neural network has less number of iterations, smaller error and better global convergence...
Criminal investigation image database retrieval is one of the key tasks in Forensic Science. Tire pattern is an important type of image data for crime scene investigation. It has been found that the rotation of tire pattern image has a great influence on retrieval precision. To relieve this problem, this paper proposes a new texture feature extraction method based on Radon transform, for more efficient...
As an important component of the rotating machine, ball bearings are widely used in industrial production. Its operating state directly concerns the safety production and economic benefits. In this paper, wavelet analysis was used to deal with non-stationary characteristic signals of the bearing. Meanwhile, Hilbert envelope spectrum is quite suitable for feature extraction. A combined diagnosis method...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.