Stiffness Of The Speed Controller - Parker Compax3 Series Operating Instructions Manual

Parker EME Setting up Compax3
4.4.1.1

Stiffness of the speed controller

The stiffness is proportional to the control loop speed.
Nominal value: 100%
On increasing stiffness:
Control action becomes faster. The control loop oscillates above a critical threshold
value. Set the stiffness with an adequate safety margin with respect to the
oscillation threshold value.
On decreasing stiffness:
Control action becomes slower. This increases the tracking error. Current limiting
will be reached later.
3
=100%
3
>100%
1
3
<100%
2
t
1: target value
2: actual value
3: stiffness
2100.2: Stiffness of the speed controller
Unit: % Range: 10 ... 100 000 Standard value: 100%
The stiffness is proportional to the control loop speed.
69
I11 T11 192-120101 N6 - March 2004