Structure Of Speed Control Mode - Delta Electronics ASDA-A Series User Manual

ASDA-A User Manual

6-3-2 Structure of Speed Control Mode

Basic Structure:
Speed command
Speed Command
Processing
Speed Control
Block Diagram
In the above figure, the speed command processing is used to select the command source of speed
control according to chapter 6-3-1, including max. rotation speed of analog speed command selection
(parameter P1-40) and S-curve filter smoothing strategy of speed control. The speed control block
diagram is used to manage the gain parameters of the servo drive and calculate the current input provided
to motor instantaneously. The resonance suppression block diagram is used to suppress the resonance
of mechanical system.
The function and structure of speed command processing is shown as the figure below:
(Command source:
Internal parameter)
(Command source:
External analog signal)
The command source is selected according to the state of SPD0, SPD1 and parameter P1-01 (S or Sz).
Whenever the command signal needs to be more smoothly, we recommend users to use S-curve and
low-pass filter.
© DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
Resonant Suppression
Block Diagram
Internal
parameter
P1-09
~P1-11
Proportion
Gain
A/D
P1-40
Analog signal
Chapter 6 Control Modes of Operation
Speed estimator
Torque limiter
S-curve filter
P1-34,
P1-35,
P1-36
Analog command
filter
P1-34,
P1-35,
P1-36
6-15
Current loop
SPD0,SPD1 signal of CN1
Low-pass
Command
filter
selection
P1-01
P1-06
4th Edition 2005/11/30, HE03