3.3 Allowable Repeatability
Motor current
Motor speed
1
0- Ti m e
Figure 3.4 M o t o r Current - Motor Speed Timing Chart
Time
• W i t h Motor Constantly Cycling through Acceleration, Idling, and
Deceleration without Stopping
The timing chart for motor armature current and motor speed is shown in
Fig 3.5. If
we assume
that allowable repeatability is n (times per minute), then n can be found using the equation given
below.
T R
n = 286.5 x
NR(JM
+
JL)(1/a
—
p2/a)
[times per minute]
Motor current
Motor speed
II
a I I
- T i m e
Figure 3.5 M o t o r Current - Motor Speed Timing Chart
Time
