Pasquettaz
Giorge Pasquettaz, Strada Torino IT
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20110192828 | SYSTEM FOR MONITORING ARC WELDING PROCESSES AND CORRESPONDING MONITORING METHOD - Described herein is a system for monitoring arc-welding processes, comprising arc-voltage sensor means ( | 08-11-2011 |
Giorgio Pasquettaz, Vercelli IT
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20100228377 | METHOD FOR CONTROLLING THE QUALITY OF INDUSTRIAL PROCESSES, IN PARTICULAR LASER-WELDING PROCESSES - A system and a method for controlling the quality of an industrial process, of the type that comprises the steps of: providing one or more reference signals for the industrial process; acquiring one or more real signals that are indicative of the quality of said industrial process; and comparing said one or more reference signals with said one or more real signals in order to identify defects in said industrial process. According to the invention, the method moreover comprises the operations of: obtaining a transformed signal from said reference signal; obtaining a transformed signal from said real signal; and calculating energies of said transformed reference signal and said real signal, respectively, said comparison operation comprising; comparing with one another said energies of said transformed reference signal and said transformed real signal, respectively, in order to extract corresponding time-frequency distribution for selected frequency values; calculating energies of said time-frequency distributions; and comparing the energies of said time-frequency distributions with threshold values in order to identify energy values associated to defects. | 09-09-2010 |
Giorgio Pasquettaz, Vercelli Torino IT
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20080245778 | Method For Controlling the Quality of Laser-Welding Processes, Control System an Program Product Therefor - Described herein is a method for controlling the quality of a laser-welding process, for example of laser welds of semifinished products constituted by elements of sheet metal of different thickness and/or properties (“tailored blanks”), of the type that comprises the steps of: detecting a radiation (E*) produced in the welding area ( | 10-09-2008 |
Giorgio Pasquettaz, Orbassano (torino) IT
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20120218405 | SYSTEM AND METHOD FOR MONITORING PAINTING QUALITY OF COMPONENTS, IN PARTICULAR OF MOTOR-VEHICLE BODIES - A system and a method for monitoring painting quality of components, for example of motor-vehicle bodies, comprises a robot which moves a monitoring head to follow the components to be monitored while they move along a production line. The monitoring head moves with respect to the surface to be monitored and comprises both a source of light and a camera which receives the light emitted by the source of light which is reflected by the monitored surface. An electronic processing unit receives the signals coming from the camera and processes them according to different processing algorithms for detecting various categories of defects, specifically small defects, medium defects, and large defects. | 08-30-2012 |
20120245893 | MODULE FOR MONITORING INDUSTRIAL PROCESSES - A module for monitoring industrial processes for use in a system for monitoring industrial processes that comprises sensor means ( | 09-27-2012 |
20130199296 | METHOD FOR MONITORING THE QUALITY OF INDUSTRIAL PROCESSES AND SYSTEM THEREFROM - A method for monitoring the quality of an industrial working process, which includes identifying defects of the working process, comprises acquiring at least one signal having multiple frequency components from the industrial working process, decomposing the at least one signal having multiple frequency components in signals having single frequency components, calculating the information content for each signal having a single frequency component, analyzing the information content for each signal having a single frequency component, and if the value of the information content of the signal at the lowest single frequency component does not represent a main percentage of the information content of the whole acquired signal, the acquired signal having multiple frequency components is evaluated as indicative of a working process with defects and a defect analysis step is performed on the signal having multiple frequency components. | 08-08-2013 |
Giorgio Pasquettaz, Vercelli(torino) IT
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20120325785 | Method for controlling the quality of laser-welding processes, control system and program product therefor - Described herein is a method for controlling the quality of a laser-welding process, for example, of laser welds of semifinished products constituted by elements of sheet metal of different thickness and/or properties (“tailored blanks”), of the type that comprises the steps of: detecting a radiation (E*) produced in the welding area and issuing signals (E*) indicating said radiation; acquiring and processing said signals (E*) indicating said radiation; making a division into blocks of said signals (E*) indicating said radiation; calculating for each block a block-mean value (u) and a value of block standard deviation (o); and in supplying input values comprising block-mean values (u) and values standard deviation (o) for identifying defects and/or porosities and insufficient penetration. | 12-27-2012 |
Giorgio Pasquettaz, Orbassano IT
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20130147947 | METHOD FOR MONITORING THE QUALITY OF THE PRIMER LAYER APPLIED TO A MOTOR-VEHICLE BODY PRIOR TO PAINTING - A method for monitoring the quality of the primer layer applied to the body of a motor vehicle prior to painting (enamelling) envisages provision of at least one manipulator robot carrying a monitoring head. The monitoring head includes a light source constituted by an array of LED sources and a videocamera that are held in a position fixed with respect to one another whilst they are displaced with respect to the surface to be monitored following the profile of said surface. The signals at output from the videocamera are processed by dividing the area monitored into an array of sub-areas and executing the same processing procedure simultaneously on all the sub-areas. | 06-13-2013 |