US 12,346,086 B2
Reduction of friction within a machine tool
Stephen Yutkowitz, Cincinnati, OH (US); Daniel Hein, Munich (DE); and Steffen Udluft, Eichenau (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 17/914,531
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Mar. 23, 2021, PCT No. PCT/EP2021/057457
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2021/197935, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 20167577 (EP), filed on Apr. 1, 2020.
Prior Publication US 2023/0141311 A1, May 11, 2023
Int. Cl. G05B 19/404 (2006.01)
CPC G05B 19/404 (2013.01) [G05B 2219/41161 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A computer-implemented method for reducing friction within a machine tool, comprising:
a) reading a plurality of surrogate models for approximating friction compensation within a given machine tool, wherein each surrogate model is configured such that it assigns a friction compensation result value to a given friction compensation parameter set for reducing friction within a machine tool, and wherein a weighting factor is assigned to each surrogate model, the weighting factor representing a goodness-of-fit of a surrogate model to a machine tool,
b) reading a friction compensation parameter set,
c) determining a friction compensation result value for each surrogate model using the compensation parameter set,
d) determining a weighted average friction compensation value of the friction compensation result values using the respective weighting factor of the respective surrogate model,
e) determining a quality indicator for the friction compensation parameter set based on the weighted average friction compensation value,
f) outputting the friction compensation parameter set, if the quality indicator fulfills a given quality criterion, or otherwise repeating b) to e) until the quality indicator fulfills the given quality criterion, and
g) applying the outputted friction compensation parameter set (Reps to the machine tool for reducing friction within the machine tool.