
Title 9083 / 9087 / 90A3 / 90A7
Learning Control Operator’s Manual
03 '00.06.07 N.Sonoda Qualified 2'nd issue Draw No.
02 ‘99.01.14 K.Maeda Qualified 1’st issue
A - 63639E - 034
01 ‘97.12.08 K.Maeda Newly designed Sheet 027
Edit Date Design Description / 070
Data range : 0 to 20
Standard : Refer to Appendix 3. Parameter table for Learning control.
Data range : 0 to GODMX
Standard : Refer to Appendix 3. Parameter table for Learning control.
(Note) In case of Expanded Gx being enable (No.2008#3 = 1) , set GXDMN to 0.
Data range : 0 to 128
Standard : 64 (When No.2008#3 = 0)
(Note) In case of Expanded Gx being enable (No.2008#3 = 1), Refer to
Appendix 3. Parameter table for Learning control.
Dynamic characteristic compensation Gx is composed from three parameters No.2246, No.2247, No.2248,
which symbols are GODMX, GODMN, GCOEF respectively. Furthermore six successive parameters from
No.2248 to No.2253 are named Expanded Gx. Attention to No.2248 double assigned by both Gx and Expanded
Gx. Either of Gx or Expanded Gx is to be active, not both.
In usual case you need not to change Gx or Expanded Gx from Appendix 3. Parameter table for Learning
control so long as the accuracy convergence problem doesn’t occur.
If it occurs, you need to tune three parameters of Gx after reset EXGX (No.2008#3) to zero. Due to many
parameters of Expanded Gx, it is recommended to disable it by EXGX=0.
Gx improves the characteristic of controlled object. GODMX and GODMN improve the phase characteristics of
controlled object. The greater both values are, The more advance value of phase it have. GCOEF is the
compensation parameter to improve the gain characteristics of controlled object. As the values are greater, the
value of gain gets greater. There is a predetermined parameter set fit to each properties of the motor such as
velocity gain and position gain. If there is not a parameter set you want to use, please consult to Kyushu branch
office, Servo Laboratory through the charged person of your nearest FANUC or GEFanuc office.
In case of Expanded Gx chosen with EXGX (No.2008#3 ) one set, you need to set for the following parameters.
Standard : 0
2246
GODMX Maximum order of Gx
2247
GODMN Minimum order of Gx
2248
GCOEF / EXGXK1 Coefficient of Gx / Coefficient 1 of expanded Gx
2252
EXGXK 5 Coefficient 5 of expanded Gx
2253
EXGXK 6 Coefficient 6 of expanded Gx
2251
EXGXK 4 Coefficient 4 of expanded Gx
2249
EXGXK2 Coefficient 2 of expanded Gx
2250
EXGXK 3 Coefficient 3 of expanded Gx