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Unread 09-02-2009, 14:50
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Ivan Helmrich Ivan Helmrich is offline
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FRC #1775 (Tigerbytes)
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LabVIEW Filter help needed

I want to put a low pass filter on the joystick axes to limit accelleration. I've found a low pass filter vi (equi-ripple lawpass filter.vi) that I think should work but I'm not sure what to do with it. When I try to wire the joystick to the filter, it tells me that I have a scalar going into an array of that type. I guess I don't understand what I need to do with the joystick value to get it into an array that is useful. For that matter, I don't really know what the array should consist of.

Short term of course, I'm just looking for a solution. Long term, I'd really like to have an understanding of what needs to go in the filter. I'm not a controls guy so I'm a little confused by the taps also. Is there is a simpler filter I should use?

Anybody got the time to post a screenshot of how to hook this up or an explanation of how to make this work? I'm trying to do this in the teleop vi of the Advanced Project. Thanks.
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