No. SX-DSV02829 -
110-
5-2-8 Instantaneous Velocity Observer function
This function enables both realization of high response and reduction of vibration at stopping, by estimating the motor
velocity using a load model, hence improving the accuracy of the velocity detection.
Current
control
Velocity
control
Speed
command
Torque
command
Instantaneous
velocity observer
Load model
Motor
current
Motor
Feedback
Scale
Servo driver
Motor
position
Position
control
Load
(Total inertia)
Estimate
velocity value
(1) Applicable Range
□ Following conditions have to be satisfied to apply this function.
Conditions under which the instantaneous velocity observer is activated
Control mode
• Control mode to be position control or velocity control.
Others
• Should be in servo-on condition
• Parameters except for controls such as torque limit setup, are correctly set, assuring that the
motor can operate normally.
• Real-time auto-tuning should be disabled. (Pr 0.02=0)
• The motor should be of a linear type. (Pr 9.00=1)
• No velocity estimation operation is performed during the execution of magnet pole position.
R1.00
Motor Business Unit, Panasonic Corporation