Acceleration

LabVIEW 2018 SoftMotion Module

Edition Date: March 2018

Part Number: 371093W-01

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

Acceleration defines how quickly the axis or axes come up to speed and is typically limited to avoid excessive stress on the motor, mechanical system, and/or load. Coordinate acceleration 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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