5. About the Scaling of Feedback Signals
The Drive-On-Chip Design Example for Intel® MAX® 10 devices requires scaling to convert the feedback samples from alternative ADCs (sigma-delta ADCs versus Intel® MAX® 10 ADCs) into the same units for use in the FOC algorithm. Also, the design requires scaling to convert current and voltage feedback values to the units expected by DC-DC module. The design treats some feedback as "dimensionless" data and scales it into a convenient range (e.g. signed 16-bit integer) for use in the control loop. The design presents data for diagnostic purposes in a GUI provided as a System Console Toolkit. The .tcl toolkit script DOC_debug_gui.tcl, which creates this GUI, performs further scaling into physical units for waveform displays.
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