Deceleration

LabVIEW 2018 SoftMotion Module

Edition Date: March 2018

Part Number: 371093W-01

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Specifies the maximum deceleration of the move in Units/s2. Setting deceleration to 0 (default) allows SoftMotion to automatically calculate the deceleration using the specified Smoothing. If you specify a value for deceleration but not acceleration SoftMotion assumes equal values for acceleration and deceleration when calculating the move profile.

Note Note  A different, slower deceleration is useful in applications where coming to a gentle stop is important.

Deceleration defines how quickly the axis or axes come to a stop and is typically limited to avoid excessive stress on the motor, mechanical system, and/or load. Coordinate deceleration is calculated using the root sum of squares as follows:



Specify the units for your application using the Stepper page of the Axis Configuration dialog box for open-loop stepper axes, or the Encoder page for closed-loop stepper and servo axes. Specified units only apply when you perform moves and not when you are generating motion profiles.

Generating ProfilesPerforming a Move
When CalculatedWhen Solve Profile is called.During move execution.
Other Influencing Factors
  • length of move
  • other move constraint values (velocity, acceleration, deceleration, and jerk)
  • length of move
  • other move constraint values (velocity, acceleration, deceleration, and jerk)
  • PID tuning parameters
  • physical constraints of the drive/motor/mechanical system

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