Patent ID: 6263355
Filing Date: 2001-07-17
Classification: C08F,G05B

Abstract:
A method for generating a filtered signal from a plurality of raw signals and at least one previously generated filtered signal, the method comprising steps for:(a) calculating n FACTOR values according the expressions: ##EQU17##(b) calculating n f values according to the expressions:fn=SIGN[X(t)-Xf(t-n)]*FACTORnfn-1=SIGN[X(t-1)-Xf(t-n)]*FACTORn-1##EQU18##(c) calculating fsum according to the expression:fsum=ABS(f1+f2+f3+ . . . +fn)(d) calculating FAC according to the expression:FAC=([ABS(fsum)]/n).sup.z(e) calculating the smoothed value XS(t) according to the expression:XS(t)=(a0)X(t)+(a1)X(t-1)+ . . . +(an-1)X(t-(n-1));and(f) calculating a filtered value Xf(t) according to the expression (60):Xf(t)=Xf(t-1)+FIL*FAC*{XS(t)-Xf(t-1)},wherein:X(t) =raw data point at time t;Xf(t)=filtered signal at time t;n is a positive integer;z is a positive number; and1=a0+a1+ . . . +an-1.