Toshiba T300MV2 - Vector Control Speed Control

IF08CZ10 April, 2019 - 44 -
CIRCUIT OPERATION (cont’d)
Vector Control Speed Control
The following figure shows the speed control block diagram.
The speed reference signal SP_R and the speed feedback signal SP_F are input with the
count/weight of 1.0/100% and the deviation between these two is subjected to proportional/integral
operations and then output. After the previously output signal is subjected to speed filtering, and the torque
limit is processed, its torque reference SFC_T_R is output with count/weight of 1.0/100%. The control
response is performed with the following parameter settings:
ASPR_A: Anti-overshoot gain
ASPR_AT: Anti-overshoot time constant
ASPR_P: Proportional gain
ASPR_W1: Response target
Note, that if GD2 of the machine is extremely large, compared to the GD2 of the motor, there is a
long extension shaft, or if there is torsional resonance, the control response may need to be slow.
Limit calculation
Speed
reference
SP_R
<Anti-overshoot>
<Differentiation>
<Proportion>
SFC (option)
Simulator
<ACR> <Inertia>
<Torque limit>
<Anti-over>
<Speed control>
ASPR_A: Anti-overshoot gain
ASPR_AT: Anti-overshoot gain time constant
ASPR_P: Proportional gain
ASPR_W1: Response target
<Filter>
<Proportion>
<Integration>
Speed detection
SP_F
+
-
+
-
+
FLT_T_R
SFC_T_R
1.0/100%
Motor Group
Speed control gain
switching
(Option)
Switching of a
maximum of 4 stages
FLG_MOT_G
FLT_SFC: ACR simulator
OP_SFC_J: Inertia
OP_SFC_P: Proportion
OP_SFC_D: Differentiation
OP_SFC_A: Anti-overshoot
LMT_SFC_D: Differentiation limit
<Limit>
SFC_DATA
1.0/100%
+
+
-
+
-
Speed Control