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Servo system principles
Section 1-4
15
The output speed gain can be useful for smoothing motions but will
generate high Following Errors. The output speed gain axis parameter is
called
OV_GAIN
.
• Speed feed forward gain
The speed feedforward gain
K
vff
produces an output
O
vff
that is
proportional to the change in demand position
P
d
and minimizes the
Following Error at high speed.
O
vff
= K
vff
·
∆
P
d
The parameter can be set to minimise the Following Error at a constant
machine speed after other gains have been set. The speed feed forward
gain axis parameter is called
VFF_GAIN
.
The default settings are given in the table along with the resulting profiles.
Fractional values are allowed for gain settings.
/i
Gain
Default value
Proportional gain
0.1
Integral gain
0.0
Derivative gain
0.0
Output speed gain
0.0
Speed feedforward gain
0.0
Содержание SYSMAC CJ Series
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Страница 70: ...Specifications Section 2 4 58...
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Страница 148: ...All BASIC commands Section 4 2 136 AXIS 1 AXIS 0...
Страница 277: ...Section 265 SECTION 5 Examples This chapter gives 2 categories of examples and tips How to s Practical examples...
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