Trinamic QBL5704-94-04-032 - 57 x 57mm Brushless DC Motor, 0.32Nm, 36Vdc, 5.0A 51-0004 Data Sheet
Product codes
51-0004
QBL5704 Manual (V1.00 /09-May-2007)
8
Copyright © 2007, TRINAMIC Motion Control GmbH & Co. KG
5.2 RMS torque requirement
Root-Mean-Square or RMS torque is a value used to approximate the average continuous torque
requirement. Its statistical approximation is with
t1: acceleration time
requirement. Its statistical approximation is with
t1: acceleration time
t2: run time
t3: deceleration time
t4: time in a move
(
)
(
)
4
3
2
1
3
2
F
L
J
2
2
F
L
1
2
P
RMS
t
t
t
t
t
T
T
T
t
T
T
t
T
T
+
+
+
⋅
−
−
+
⋅
+
+
⋅
=
5.3 Motor
velocity
The motor velocity is also dictated by the configuration of the mechanical system that is coupled to
the motor shaft, and by the type of move that is to be effected. For example, a single velocity
application would require a motor with rated velocity equal to the average move velocity. A point to
point positioning would require a motor with a rated velocity higher than the average move velocity.
(The higher velocity would account for acceleration, deceleration and run times of the motion profile).
Figure 5.1 relates rated motor velocity to average move velocity for two point to point positioning
move profiles.
the motor shaft, and by the type of move that is to be effected. For example, a single velocity
application would require a motor with rated velocity equal to the average move velocity. A point to
point positioning would require a motor with a rated velocity higher than the average move velocity.
(The higher velocity would account for acceleration, deceleration and run times of the motion profile).
Figure 5.1 relates rated motor velocity to average move velocity for two point to point positioning
move profiles.
Figure 5.1: Rated motor velocity to average move velocity for point to point positioning