PLC Coder: How do I prevent exponential notation in lookup tables?

Isaac Friedman

2020 6 1

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I'm using Simscape Multibody to create lookup tables that correlate joint rotation to linear actuator data. When I parse the data collected from the simulations, I get a lot of numbers that are less than 1E-3 (0.001), which MATLAB only displays in exponential notation when the table is exported to a TwinCAT3 format using the PLC Coder. All other exponential numbers are written out to 8 decimal places, but specifically not those.

TwinCAT3 doesn't accept exponential notation.

How do I tell MATLAB or the PLC Coder app to only export these values in decimal form to 8 decimal places?

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Isaac Friedman 2020-6-1

The matrix that makes up a lookup table is programmatically inserted into the lookup table function block as a string. Currently I use mat2str to do this. Is there a way to tell the mat2str function to use the decimal forms of the numbers when called?

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