Patent ID: 6628004
Filing Date: 2003-09-30
Classification: G01P,H02P

Abstract:
A method for controlling the acceleration of an armature of an electric drive, with means for generating a partly synthesized high quality acceleration error correction signal z, comprising the steps of:obtaining a measured armature acceleration value bm, equal to the product of a true armature acceleration &agr;, measured by an accelerometer mechanically attached to the armature of the electric drive, and an acceleration measurement transfer function Fg(p), having a complex frequency variable p whereby the function Fg(p) equals one when p equals 0; obtaining a measured acceleration signal, bEm, generated from a measured substitute acceleration signal bE; scaling the measured armature acceleration value bm and the measured acceleration signal bEm such that the relationship of bm=&agr;Â·Fg(p)=bEmÂ·Fg(p) is satisfied; filtering the measured armature acceleration signal bm with a first filter transfer function of FT(p), to obtain a first filter output signal x=bmÂ·FT(p), in which the first filter transfer function FT(p) has the complex frequency variable p; filtering the measured acceleration signal bEm with a second filter transfer function of FH(p), to obtain a second filter output signal y=bEmÂ·FH(p); and combining the first and second filter outputs to form the partly synthesized high quality acceleration error correction signal z=bmÂ·FT(p)+bEmÂ·FH(p).