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    METHOD TO DETERMINE ANGULAR PITCH OF A TOOTHED CRANK WHEEL OR GEAR
    2.
    发明公开
    METHOD TO DETERMINE ANGULAR PITCH OF A TOOTHED CRANK WHEEL OR GEAR 审中-公开

    公开(公告)号：EP3532802A1

    公开(公告)日：2019-09-04

    申请号：EP17797078.7

    申请日：2017-10-24

    申请人： Delphi Technologies IP Limited

    发明人： EL HOR, Noureddine ,  RIVA, Jérémy

    IPC分类号： G01D5/244 ,  G01P3/481 ,  G01M15/06

    摘要： A method of determining the error in the angular interval, pitch or period of one or more teeth of a rotating toothed wheel having N teeth comprising: i) generating a periodic signal corresponding to the tooth periods of said teeth passing a point; ii) in respect of each tooth period Ti, for each tooth i, determining the value of the centered sum Ti (N-1) of the flanking N-1 periods; iii) determining a measure of the local gradient ΔT į N-1 of each centered sum Ti(N-1) iv) computing the mean value of gradient —ΔT į N-1 with respect to all tooth periods Ti(N-1) v) computing an error Ʈ value τ in respect of tooth angle period based on the difference between said mean value of gradient —ΔT į N-1 and the local gradient ΔT į N-1 calculated with respect of the tooth in step iii).