
SimplIQ Software Manual The Controller
MAN-SIMSW (Ver. 1.4)
15-3
DV[2]
Σ
Speed command
-
Torquecommand
(DV[1], Amp)
Speed
controller:
KP,KI
High order
filter
FF[1] d/dt
Automatic
Controller
Selector
0
Fixed if
GS[2]=0
Position sensor
Speed
Estimator
Encoder pulse
timer
Speed feedback
Figure 15-1: Speed Controller Block Diagram
15.1.2 Speed Controller Parameters
The basic continuous-time PI controller is:
s
sKK
PI
+
where:
K
I
is the integral parameter.
K
P
is the proportional parameter.
When using the scheduler, K
I
and K
P
are functions of time. When not using the gain
scheduler, they are fixed.
The input to the PI element is the speed error e
SPEED
(t) [Internal speed units]:
)()()( tackSpeedFeedbtndSpeedCommate
SPEED
−=
The output to the current command I(t) in ampere units is:
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
⋅⋅+⋅=
∫
)()()()(
0
tpteKdeKKtI
SPEEDP
t
SPEEDISpeed
ττ
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