US 9,810,203 B2
Method and calculator unit for determining total damage to at least one rotating component of a drive train
Guenter Berger, Castrop-Rauxel (DE); Tobias Herrmann, Ismaning (DE); and Boris Buchtala, Muehlacker (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Appl. No. 14/360,540
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Oct. 25, 2012, PCT No. PCT/EP2012/004455
§ 371(c)(1), (2) Date May 23, 2014,
PCT Pub. No. WO2013/075777, PCT Pub. Date May 30, 2013.
Claims priority of application No. 10 2011 119 466 (DE), filed on Nov. 25, 2011.
Prior Publication US 2014/0318226 A1, Oct. 30, 2014
Int. Cl. G01M 13/02 (2006.01); F03D 11/00 (2006.01); F16H 57/01 (2012.01); G01M 15/14 (2006.01); F03D 17/00 (2016.01); F03D 15/00 (2016.01)
CPC F03D 11/0091 (2013.01) [F03D 15/00 (2016.05); F03D 17/00 (2016.05); F16H 57/01 (2013.01); G01M 15/14 (2013.01); F05B 2240/60 (2013.01); F05B 2260/40 (2013.01); F05B 2260/80 (2013.01); F16H 2057/012 (2013.01); Y02E 10/722 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for determining total damage to a gear mechanism of a drive train of a system, comprising:
determining a first variable characterizing a torque transmitted by the gear mechanism over time during operation of the system;
determining a second variable characterizing a rotational speed of a component of the gear mechanism over time during operation of the system;
determining, with a calculator unit, a load collective based upon a first temporal progression of the first variable and a second temporal progression of the second variable; and
determining a total damage to the gear mechanism by comparing the determined load collective with a reference load collective using the calculator unit.