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1. (WO2018082744) METHOD FOR FILTERING A POSITION SIGNAL OF A POSITION SENSOR OF A CLUTCH ACTUATION DEVICE

Pub. No.:    WO/2018/082744    International Application No.:    PCT/DE2017/100927
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Nov 03 00:59:59 CET 2017
IPC: F16D 48/00
F16D 13/00
F16D 48/06
Applicants: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventors: GÖPPERT, Georg
Title: METHOD FOR FILTERING A POSITION SIGNAL OF A POSITION SENSOR OF A CLUTCH ACTUATION DEVICE
Abstract:
The invention relates to a method for filtering a position signal (S) of a positions sensor of a clutch actuation device of a friction clutch in a drive train of a motor vehicle. In order to eliminate vibrations occurring in an in particular hydrostatically designed clutch actuation device due to a non-linear arrangement, the position signal (S) is filtered by means of a low pass filter (12), the position signal (S) is additionally filtered in a first filter element (13) having a sliding average and in a second filter element (14) as a hysteresis filter (15), wherein both filtered position signals (S(m), (S(h)) are weighted in a decision module (16) in order to minimize deviations of the filtered position signal (S(s)) from the actual position.