
B-65270EN/05 4.SERVO FUNCTION DETAILS
- 263 -
(Example of setting for a rotary motor)
- Suppose that the estimated disturbance value at 1000 min
-1
is 1
[Ap] (the maximum amplifier current value is 40 [Ap]).
Dynamic friction compensation coefficient = 1/40 × 440 = 11
These portions represent
disturbances due to dynamic
friction. An adjustment is made
to eliminate these portions.
Read value
(A)
The effect of dynamic friction is
reduced, and stable estimated
disturbance values are
obtained.
Dynamic friction compensation
before setting
Dynamic friction compensation
after setting
(ii) Method of setting a dynamic friction as "portion
proportional to velocity + constant portion" and imposing a
limit
If the compensation value for stop time to low-velocity
movement is insufficient in adjustment of (i), set a dynamic
friction compensation value in the stop state. If the
compensation value for high-speed movement is excessive,
a limit is imposed on the compensation value.
No.2758(Series 15
i
)
No.2345(Series 16
i
and so
on)
Compensation value in the
sto
time
No.2759(Series 15
i
)
No.2346(Series 16
i
and
so on)
Com
ensation limit value
No.1727(Series 15
i
)
No.2116(Series 16
i
and
so on)
Dynamic friction
com
ensation coefficient
Velocity
Dynamic friction compensation value
1000min
-
Set a compensation value in the stop time and
a compensation limit value in addition to a
com
ensation value at 1000 min
-1
.