No. SX-DSV02472 -
49-
5-1 Automatic adjusting function
The figure below shows outline of automatic adjusting function of MINAS-A5B series.
Current
control
Position/
speed
instruction
Motor
speed
Torque
instruction
Basic gain
automatic setting
Motor
current
Motor
Encoder
Servo driver
Adaptive
process
Load characteristic
estimation
Friction torque
compensation
Position/
speed
control
Notch filter
Torque
instruction
generation
Resonance freq.estimation.
1)
Real-time auto tuning
Estimates the load characteristics based on the motor velocity and torque command, and automatically sets up
the basic gain related to position and velocity control, based on estimated inertia. Also estimates the friction
torque at the same time and adds the estimated value to the torque command to shorten positioning settling time.
2)
Adaptive filter
Estimates the resonance frequency based on the motor velocity and removes the frequency components from
torque command to prevent resonant oscillation.
R1.05
Motor Business Division, Appliances Company, Panasonic Corporation