Profile Velocity

Motion Block

Description

Profile Velocity returns the current commanded speed (signed magnitude) that is being used to generate the trapezoidal motion trajectory. During slew, the magnitude of Profile Velocity is the same as Speed. During Accel and Decel the profile velocity varies linearly with progress through the phase.

Escapes

The Profile Velocity block does not generate any escapes.

Examples

Consider a machine with a laser that had variable intensity based on an analog input. As the speed of the laser is increased it is necessary to increase the voltage to this input. The following block list would ratio the analog output of the laser to the current speed of the axis:

The Abs block is needed since the Profile Velocity block will return a negative value for motion occurring in the negative direction but the voltage needs to remain positive regardless of direction.

Related Topics

Accel
Decel
Speed
Jog
Profile Phase