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Math Help - Profile Graph Problem

  1. #1
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    Apr 2012
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    United Kingdom
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    Profile Graph Problem

    Hi,
    I read through all your forum topics and wasn't sure where to post!
    So here goes for a stab, please tell me if I'm in the wrong topic area: -

    Background
    I am re-writing/updating some software for a machine that uses motors to move/stack a single continuous row of articles off a "y axis" conveyor belt and onto a second wider "X axis" conveyor belt so the articles stack 50 in a row.
    The two motors X and Y control a push bar by sweeping the articles off the y axis conveyor and onto the X axis conveyor in an "S" shaped profile.

    Problem 1
    The original software produced two arrays of up to 50 points. X axis = [time, distance] and Y axis[Time, distance].
    Depending on the complexity the profile the number of points vary between 30 and 50.
    Each array entry is made up of a time and position entry. starting from 0secs, 0mm.
    Both always complete at the same time.
    Both final time and final distance are variable.
    The time points for each array are not linked other that they do represent real time.

    Real Data
    Number of Points = 44
    xAxisTime = {0, 900, 2700, 3150, 3600, 4012, 4425, 4837, 5250, 5662, 6075, 6487, 6899, 7312, 7724, 8137, 8549, 8962, 9374, 9713, 10051, 10390, 10728, 11067, 11405, 11744, 12082, 12421, 12760, 13098, 13437, 13775, 14114, 14452, 14452, 15212, 15972, 16731, 17491, 18251, 19002, 20268, 21534, 22800, 24000}


    xAxisPosition = {0, 13, 64, 73, 76, 77, 81, 90, 101, 112, 126, 141, 158, 177, 198, 219, 239, 256, 271, 283, 295, 306, 317, 326, 335, 344, 351, 358, 364, 368, 372, 375, 376, 377, 377, 374, 360, 329, 280, 220, 157, 66, 13, 0, 0}


    Number of Points = 46
    yAxisTime = {0, 1482, 2894, 3600, 6625, 6625, 6625, 6720, 6815, 6909, 7004, 7099, 7194, 7289, 7383, 7478, 7573, 7668, 7763, 7857, 7952, 8047, 8142, 8237, 8331, 8426, 8521, 8616, 8710, 8805, 8900, 8995, 9090, 9184, 9279, 9374, 9374, 15646, 16245, 16844, 17443, 18042, 20403, 21202, 22001, 22800, 24000}


    yAxisPosition = {0, 0, 43, 97, 374, 374, 374, 383, 391, 400, 408, 416, 424, 432, 439, 446, 453, 459, 465, 470, 475, 479, 483, 486, 489, 492, 494, 496, 497, 498, 499, 499, 500, 500, 500, 500, 500, 500, 495, 475, 432, 374, 126, 52, 10, 0, 0}

    What would I love at this point?

    I need to graphically show the profile by mapping X against Y on a graph.
    Anyone got any pointers on how to achieve this?

    Thank you in anticipation
    Steve
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  2. #2
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    Apr 2012
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    India
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    Re: Profile Graph Problem

    Hi,

    What I understand is that you have two datas xdistance and ydistance to be mapped against time.So, why dont you plot with x in one axis ,y another one and time the third axes.Plot x data in one color and y data in another color.
    sorry if it is a dumb answer.
    -swetha
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  3. #3
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    Apr 2012
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    United Kingdom
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    Re: Profile Graph Problem

    hi,
    Yep that is the easy answer and what I did first.
    That gives you the X and the Y position individually.
    But That doesn't give you the representative X,Y position of the push bar when plotted against each other.
    Or am I been stupid - this problem has been with me for a sleepless week now
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