Using a look-up table for decoupling waveforms

Hello everyone,

I am building a vector tracking observer to estimate the PMSM rotor position. I want to do harmonic decoupling. The idea is to build a 'perfect' decoupling waveforms, and store them so they can be used from the look-up tables. But the problem is they look like this:

The input to the look-up table is the rotor position going from 0 to 2*pi, and the output should be the corresponding value from this waveform.

But this is not usable for the standard look-up table and I get an error: "Values of BreakpointsForDimension1 in '...' must be monotonically increasing.

Is there a way around this?

Thank you.

Answer 1

[Andy Bartlett]

Hi Milos,

I've created a FAQ in response to your question Resolve Error Lookup Repeated Breakpoints.

The FAQ includes a utility that will try to adjust the breakpoints used in your table.

Please, see if that helps.

Andy