it seems, you'd like to do a "sensorless" vector control for PMSM. Maybe this is a helpful article to get introduced to the topic and its nomenclature: Article Vector control for PMSM
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Note that the rotor usually is a magnet (without windings), thus the electrical resistance of it should be of minor interest (except you want to know electrical losses due to induced eddy current). However, the absolute inductance describes the relation between magnetic flux linkage and the electric current -- but magnetic flux itself depends on the current, which will make the calculation more extrusive, especially if the motor material has nonlinear magnetic permeability.