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6-57
6-17 Instantaneous Speed Observer Function
Accurax G5 AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Applied Functions
6-17
Instantaneous Speed Observer Function
Outline of Operation
Estimating the motor speed using a load inertia increases responsiveness and reduces
vibration at stopping and improves the speed detection accuracy. This function can be used
for position control.
The instantaneous speed observer function can be used in the following situations.
When servo is ON
When there is no trouble with the motor's normal rotation
When realtime autotuning is disabled
Parameters Requiring Settings
Current
control
Speed control
Speed command
Speed estimation
value
Torque
command
Instantaneous
speed observer
Load model
Motor
current
Motor
Encoder
Servo amplifier
Motor
position
To position control
Load
(Total inertia)
Parameter
number
Parameter name Explanation Reference
Pn610
Setting of Several
Function
Set whether to enable or disable the instantaneous
observer function.
P.8-59
Pn004 Inertia Ratio
Set the inertia ratio 1.
P.8-3
Pn100 Position Loop Gain
Set the position loop gain.
P.8-10
Pn101 Speed Loop Gain
Set the speed loop gain.
P.8-11
Pn103
Velocity detection
filter 1
To select the velocity detection filter 1 setting out of 6 preset
values.
P.8-11
Pn108
Velocity detection
filter 1
To select the velocity detection filter 2 setting out of 6 preset
values.
P.8-11
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