Speed Feed Forward Control, Model Adaptive Speed Control (Pr. 877 To Pr. 881) - Mitsubishi Electric FR-V560 Instruction Manual

2.3.5

Speed feed forward control, model adaptive speed control (Pr. 877 to Pr. 881)

By making parameter setting, select the speed feed forward control or model adaptive speed control.
The speed feed forward control enhances the trackability of the motor in response to a speed command
change.
The model adaptive speed control enables individual adjustment of speed trackability and motor disturbance
torque response.
Parameter
828 Model speed control gain
Speed feed forward control/model
877
adaptive speed control selection
878 Speed feed forward filter
879 Speed feed forward torque restriction
880 Load inertia ratio
881 Speed feed forward gain
POINT
When model adaptive speed gain is selected, the data obtained from easy gain tuning is used for Pr. 828 "model
speed control proportional gain". Perform easy gain tuning also (simultaneously). (Refer to the Instruction
Manual (basic).)
1
2
+
2
Speed
command
0
1
Pr.877
Name Factory Setting
Speed feed
Load inertia
forward torque
ratio
restriction
Speed feed
J s
forward gain
Pr.880
Pr.881
Model adaptive speed control
Model speed
control gain
Pr.828
-
Torque factor
(J : Pr.880)
Speed control
+
P gain 1
Pr.820
-
Actual speed controller
Fine adjustment of gains for speed control
Setting Range
60% 0 to 1000%
0 0,1,2
0s 0 to 1s
150% 0 to 400%
7 0,1 to 200 times
0% 0 to 1000%
Pr.879
Pr.878
Speed feed
forward filter
Pr.877
J
1
2
+
+
+
Speed control
integral time 1
Pr.821
51
1
J·s
Model speed
operation
iq current
IM
control
Encoder
2