Low-Pass Filter; Gain Adjustment Of Position Loop - Delta ASDA-B2-F Series User Manual

Control Mode of Operation

6.2.4 Low-pass Filter

Relevant Parameters (Please refer to Chapter 7 for detailed description):
6 Parameter

6.2.5 Gain Adjustment of Position Loop

Before setting the position control unit, users have to manually complete the setting of tuning
mode selection (P2-32) since the speed loop is included in position loop. Then, set the position
loop gain (P2-00) and position feed forward gain (P2-02). Users also can use the auto mode to
automatically set the gain of speed and position control unit.
1. Proportional gain: Increase the gain so as to enhance the response bandwidth of position
loop.
2. Feed forward gain: Minimize the deviation of phase delay.
The position loop bandwidth cannot exceed the speed loop bandwidth. It is suggested that:
For example: the desired position bandwidth is 20 Hz  KPP = 2 ×  × 20= 125.
Relevant Parameters (Please refer to Chapter 7 for detailed description):
Parameter
6-6
Abbr.
P1-08 PRLT Smooth Constant of Position Command (Low-pass Filter)
P1-45 GR2 Gear Ratio (Denominator) (M)
Target Position
fv
fp 
. fv: response bandwidth of speed loop (Hz).
4
KPP = 2 ×  × fp. fp: response bandwidth of position loop (Hz).
Abbr.
P2-00 KPP Position Loop Gain
P2-02 PFG Position Feed Forward Gain
Function
Function
ASDA-B2-F
September, 2015