Papers by Keyword: Elimination

Abstract: The exact determination of emissivity and the following determination of the surface temperature of glossy materials can be carried out e. g. after applying a material with a known value of emissivity on the surface (e. g. self-adhesive foil or spray tint). The contribution deals with other possibility of determination of surface temperature and the influence of emissivity of glossy materials using a metal shield that reduces the negative influence of the reflected radiation during the termographical measurement.

Abstract: It is possible to measure the surface temperature of a peripheral wall in a certain point with an advantage when using a technical device for elimination of reflected radiation. Other advantages of the diagnostics of the peripheral wall using the infrared termographic system after removing the mentioned technical device from the wall is, that if we determine (using the technical device) the surface temperature in a determined point, then we are, after inserting it into the termographic systém, able to determine retroactively the real value of the apparent reflected temperature, and this is even done with higher accuracy. Then we use the value for a termographic measuring of all the surface of the peripheral wall, keeping the same angle of scanning.

Abstract: The practical determination of the surface temperature and emissivity of glossy materials using the infrared thermography is carried nowadays in the way that the surface is covered with a material which has a known value of emissivity. The mentioned values are, however, possible to be determined even without the materials which havae a known value of emissivity: using the infrared radiation, which is reflected by the glossy surface and is detected by the termographical device afterwards. The contribution deals with the possibility of determination of surface temperature and emissivity of glossy materials by the mentioned method.

Abstract: The value of the surface temperature and emissivity of glossy materials can be determined by the method of four points. However, in practical measurements on the peripheral walls of buildings there may occur situations where four points are not available. In such case it is possible to use alternate sources of heat.

Abstract: The reflected radiation significantly negatively influences the results of the quantitative infrared thermographic measurement in the exterior. The paper deals the method of elimination of reflected radiation using appropriate equipment including examples of practical results of measurements.

Abstract: This paper discusses the faults of master clutch,broken weft parking,broken weft or warp no-parking,miss operation,inadequate parking and thick-film circuit,and corresponding solutions are put forward:Check clutch and replace the bearings timely when clutch has abnormal sound;Check the brake angle frequently;Pay special attention to the quality of the beam and the original yarn;Enforce vigorously the quality of the main parts; The adjustment of the sensor angle is very important;The most intuitive feel of broken weft or warp no-parking is the faults of sensor;Miss operation of loom dues to the circuit board fault or other faults,regulating improper self-locking,the peripheral circuit,starting circuit fault is in unable to conduction state,or stop circuit fault is in the power state;Inadequate parking shall check the setting position of micro switch.

Abstract: For rapier loom,in five big institutions and main auxiliary institutions,weft insertion mechanism and let-off mechanism in all kinds of mechanical problems frequency are higher,this paper focuses on GTM-AS type rapier loom as an example to introduce the mechanical problems diagnosis and elimination methods.

Abstract: Scientific document primarily describes the functionality of the principles of regression methods to determine the time of death and at the same time appreciating method used Henssgeho nomogram. Part of the document suggest application process statistically measurement in a process algor mortis and in the same time determining the measurement uncertainty of the process of translocation of material sensed temperature fields in the hepatic parenchyma. Evaluation of measured values for the determination of the correction factor of the material used there to define errors incurred in the process of research evaluation. Analyze the errors are drawn conclusions, leading to particularized elimination processes, which are used to determine the time of death polynomial regression method, and thus leads to propose strategic measures for practical application usage.

Abstract: The image matching is key technology of image processing applied to many fields. Image matching based on invariant features was the hot spot in image matching research recently. SIFT is one of the most effective scale, rotation and illumination invariant features. However there are a lot of wrong match pairs produced by original SIFT algorithm. Two specific types of wrong matches are analyzed and corresponding eliminating methods are given. Aiming at general wrong matches eliminating, a method based on similar triangles is proposed. Experiments are carried out, and the results confirm that: compared with the art of state, the proposed method is faster; it can eliminate wrong matches cleanly and preserve correct matches as well.

Abstract: In order to ensure the normal operation of the hydraulic system, the faults must be found and eliminated promptly and accurately. Most of the faults of hydraulic system don’t happen suddenly. generally, there are signs such as noise, vibration, lash, pollution and leakage etc.. If these phenomena can be found, controlled and eliminated promptly and properly, the system faults can be reduced accordingly. This paper introduces several common faults of hydraulic system and the elimination methods. which the hydraulics technicians can refer to.