Moog DS2100 User Manual Page 276

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DS2100 User’s Manual SECTION 7: CANOPEN DRIVE PROFILE: DS402
PAGE 7-22 C27750-001
LINEAR EXAMPLE
Consider the case of a linear example as shown below. Consider for example that the position encoder resolution
(feedback) is 2
20
i.e. 1048576 increments/rev (e.g. using encoder encinc = 2048, and encres = 9), the gear ratio is
1:1, and the feed constant is 50000 μm/rev. The velocity should be in μm/sec, and acceleration in μm/sec
2
.
Motor Revolution
Mo to r
Pos in Position Units (Linear)
Figure 7.9 Linear Factor Example.
The following input values, will result in the output factors listed below: -
ds402 position notation index = -6 ds402 acceleration dimension index 0x55 (m/sec
2
)
ds402 position dimension index = 0x01 (metres) ds402 position encoder resolution = 1048576 / 1
ds402 velocity notation index = -6 ds402 velocity encoder resolution = 65536 / 1 (Fixed)
ds402 velocity dimension index = 0xA6 (m/sec) ds402 gear ratio = 1/1
ds402 acceleration notation index = -6 ds402 feed constant = 50000 / 1
×
=
constfeed
ratiogearresolutionencoderposition
FactorPosition
_
___
50000
1048576
1
50000
1
1
1
1048576
=
×
=
incs per position unit
)(
10
__
sec
_
___
xPosNotIndexVelNotInde
unitsvelconstfeed
unitsPos
ratiogearresencvel
FactorEncoderVelocity
×
×
××
=
50000
65536
10
1
50000
1
1
1
65536
))6(6(
=×
×
=
incs/sec per velocity unit
)(
10
sec_
_
xVelNotIndexAccNotInde
unitsaccel
unitsvelFactorEncVel
FactoronAccelerati
×
×
×
=
50000
65536
10
1
50000
65536
))6(6(
=×
=
incs/sec2 per acceleration unit
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