
SimplIQ Software Manual Unit Modes
MAN-SIMSW (Ver. 1.4)
10-10
Software
position
command
Σ
Enable if
RM==1
Auxiliary position
command
Stop
manager
Stop and limit
switches
Smoother
d/dt
Position
Controller
FF[2]
Σ
Auxiliary
feedback
encoder
main feedback
encoder
Speed
Estimator
--
Σ
DV[3]
DV[2]
Speed
Error
d/dt
Acceleration
feed forward
FF[1]
Position
correction
Figure 10-9: Dual Feedback Mode (UM=4)
The position and speed commands are generated by:
The position software command generator
The position auxiliary command generator
The position stop manager
Generation of the position and speed commands is similar to the position and speed
command generation of UM=5 and is described in Chapter 12.
The speed command, multiplied by the gain FF[2], is fed as reference to the speed
controller in addition to position correction. Setting FF[2] exactly to the gear ratio
between the position sensor and the speed sensor prevents steady-state constant-speed
tracking errors.
The acceleration of the position command, multiplied by FF[1], can be injected directly as
a torque command. By default, FF[1]=0. The reference values to the position, speed and
torque controllers can be queried by DV[3], DV[2] and DV[1] respectively.
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