The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2003
Filed:
Feb. 13, 2001
Gernot Freitag, Darmstadt, DE;
Schenk Pegasus GmbH, Darmstadt, DE;
Abstract
To correct the loading moment due to the test bench related frictional losses in the simulation of masses on stationary test benches, a correction circuit ( ) is connected to a weather detection device ( ) which detects the air pressure (P), humidity (&phgr;) and temperature (T), and calculates the air density (&rgr;) which is transmitted to the correction circuit ( ). A loss characteristic function stored in the correction circuit defines the total frictional losses of the test bench, including mechanical friction losses and aerodynamic friction losses which are dependent on the velocity, the weight loading and the air density for a particular test. From the actual existing air density (&rgr;) and/or the actual weight loading of the roller bearings (G), the correction circuit ( ) calculates the air frictional losses and the bearing loading losses, which are then combined with the nominal rated rotational moment so that the loading moment is corrected to the extent of the losses.