Parameter Adjustments For Predictive Control; Overview Of Predictive Control; Related Parameters - YASKAWA SGD7S series Product Manual

7.1 Parameter Adjustments for Predictive Control

7.1.1 Overview of Predictive Control

7.1

Parameter Adjustments for Predictive Control

The related parameter settings and adjustment procedures necessary to use predictive control
for cutting applications are given below.
Applying predictive control has the following merits.
• Shorter positioning times
• Improved trajectory tracking
Note: Predictive control is only enabled during cutting operations.
7.1.1

Overview of Predictive Control

Predictive control can be used only during cutting operations (operating mode 0). During cut-
ting operations (operating mode 0), gain bank 0 is selected unconditionally.
You can use predictive control to diminish servo tracking errors such as corner undercutting,
arc radius reductions, and overshooting, and to improve trajectory tracking.
7.1.2

Related Parameters

The parameters related to predictive control are given in the following tables.
Pn070
Pn150
Pn153
Pn154
7-2
Parameter

n. 0
Disable predictive control.
(default setting)

n. 1 Enable predictive control.

n. 2
Tp = 0.001
(default setting)

n. 3 Tp = 0.002
 
n. 1
Kp interlocking prediction parameter set-
(default setting) ting
Predictive Control Equivalent Kp
Setting Range Setting Unit
10 to 300
Predictive Control Speed Feedforward Gain
Setting Range Setting Unit
0 to 5,000
Description
Default Setting
1% 100
Default Setting
0.1% 0
When Enabled Classification
After startup Setup
After startup Setup
After startup Setup
Position
Classifica-
When Enabled
tion
Immediately Tuning
Position
Classifica-
When Enabled
tion
Immediately Tuning