How do you control the acceleration and velocity of the contour move function?

[Hideoutdoor]

Unlike straight line move there isn't a control for acceleration, velocity and etc... For contour move so I was wondering how you control the movement so that a stepper motor slows down near the set position listed in the table?

At the moment I'm trying to use 2-axis to draw a square but the next movement from the table starts before the previous motion slows down. So the square I get have fillet corners. I know it's impossible to have a perfect square because of inertia but is there a way to slow the the movement enough to reduce how quick the movement is between steps?

[ben64]

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Hideoutdoor a écrit :
Unlike straight line move there isn't a control for acceleration, velocity and etc... For contour move so I was wondering how you control the movement so that a stepper motor slows down near the set position listed in the table?

At the moment I'm trying to use 2-axis to draw a square but the next movement from the table starts before the previous motion slows down. So the square I get have fillet corners. I know it's impossible to have a perfect square because of inertia but is there a way to slow the the movement enough to reduce how quick the movement is between steps?

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If you use NI-Motion assistant you can define velocity and acceleration for contour move. You will always have rounded corner with contour move because it uses cubic spline interpolation. In your case it is best to use linear moves, contour moves are useful when you can't define a move using linear and arc moves.

Ben64

[Hideoutdoor]

Thanks! I looked into it and I have to use contour move because the application for my project is 3D prototyping.
I was wondering if there's a way to take information from the contour move table and plot a graph to show the movement/what the completed movement will look like?

[ben64]

If you use Motion Assistant you can visualize the configured contour move. If you don't have it or your controller is not supported you will have to use the 3D contour graph in LabVIEW.

Ben64