104
Motion Control Theory
4.3.3.2
S-curve
An S-curve is a curve where the speed profile in the jerk area can
be represented by second-order profile. This helps to reduce
motor vibration at start up and stop time as indicated by points (t1,
t3, t5, t7) in figure below.
To shorten acceleration and deceleration time the linear section (t2,
t6) is inserted in these area to maintain the maximum acceleration
and so get an acceleration-time (A-T) chart in Trapezoidal.
Figure 4-19: S-curve's velocity, acceleration, and jerk versus time
Start velocity
End velocity
Max. velocity
Max. acceleration
Max. acceleration
Acc.
Dec.
Distance
Time
Time
Time
Tacc
Tdec
Acceleration
Jerk
Velocity
Содержание PCI-8254
Страница 2: ...ii Revision History Revision Date Description 2 00 2014 08 13 First release ...
Страница 8: ...viii Table of Contents Important Safety Instructions 209 Getting Service 211 ...
Страница 12: ...xii List of Figures ...
Страница 14: ...xiv List of Tables ...
Страница 24: ...10 Introduction ...
Страница 54: ...40 Getting Start with The Installation ...
Страница 78: ...64 Signal Connection ...
Страница 111: ...Motion Control Theory 97 PCI 8254 PCI 8258 MCP2 Bode plot page ...
Страница 165: ...Motion Control Theory 151 PCI 8254 PCI 8258 Example Figure 4 55 Continuous interpolation examples ...
Страница 222: ...208 Motion Control Theory ...