<< Click to Display Table of Contents >> Navigation: MechDesigner Reference & User Interface > Dialog-Boxes > Dialog: Function-Block: Polynomial-Fit |
Note: Save your model before you use the Polynomial-Fit dialog-box controls.
You must connect a wire to its input-connector.
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The Polynomial Fit FB finds a concatenated series of Polynomials (5th order) that are an approximation to the data that you connect to its input-connector. After you calculate (fit) the Polynomials, you can: •Transfer the Polynomials directly to MotionDesigner as a new Motion •Connect the output from the Polynomial-Fit FB as the input to a different FB. •Save the motion-values that you calculate as a text-file. •Save the values for position, velocity, and acceleration at the beginning and end of each polynomial segment as a CSV file. •Save the values for position, velocity, and acceleration at the beginning and end of each polynomial segment in the format required for a Schneider-Electric® EPAS4 servo-controller. |
Edit the Polynomial-Fit FB:
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The Polynomial-Fit dialog-box is now open.
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The Polynomial-Fit dialog-box:
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![]() Acquire and Save Results toolbar |
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The toolbar buttons are:
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Number of Fitted Polynomials in Fit (Read-Only) The number of Polynomials in the numerical solution. See also: Maximum Polynomial Count. in the Settings for Polynomial Fitting Algorithms. RMS Position Error, RMS Velocity Error, RMS Acceleration Error (Read-Only). They give the RMS (Root, Mean, Square) error values of the Position, Velocity and Acceleration between the 'best-polynomial-fit' and the 'input-motion-data', as percentage of the maximum range of each motion-derivative. |
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Parameters to enter before you click Fit Polynomials to Data (button
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The toolbar buttons are:
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Graph plot color scheme for •original, or input, data •fitted data calculated from the fitted polynomials •each motion-derivative •Cursor - you can click ON a graph of each motion-derivative to show a cursor. The X-Y data-values of the active cursor is above the graphs. |