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M4220170607EN
UI Robot Technology Co. Ltd.
UIM2842
UIM2842 can make NEMA17/23 4000RPM (quad step) in 0.25 seconds. UIM2842
controller has the following non-linear acceleration functions.
If the desired speed is higher than a certain value (i.e. the Maximum Starting Speed,
defined by instruction), and current motor speed is lower than the Max. Starting Speed,
then the motor speed will first step up to the Max Starting Speed and then linearly
accelerated according to the acceleration rate.
Figure7-3: Nonlinear Acceleration Control (case 1)
If the desired speed is less than the Max Starting Speed, then the motor speed will step up
to the desired speed immediately.
Figure7-4: Nonlinear Acceleration Control (case 2)
If the current speed is higher than the Max Starting Speed, the UIM2842 will use the linear
Acceleration Control Algorithm to control the speed.
Figure7-5: Nonlinear Acceleration Control (case 3)
7.4 Nonlinear Deceleration
Similar to the nonlinear acceleration control, there are three cases and corresponding
control algorithms as listed below.
T
(
Time
)
Speed
Uniform acceleration
Desired Speed
Current Speed
Step acceleration
Maximum Starting Speed
T
(
Time
)
Speed
Desired Speed
Current Speed
Step Acceleration
Maximum Starting Speed
T
(
Time
)
Speed
Uniform acceleration
Desired Speed
Current Speed
Maximum Starting Speed