Hello, I want to model a DC motor which I bought from a company. I only have the following information: torque constant [M.N.M./Amp], EMF constant [MV/RAD/SEC], Dynamic Resistance [OHMS] and Motor Regulation [RPM./M.N.M.]. The company does not provide the moment of inertia nor elect/mech time constant. As far as I know, I need all these three pieces of information in order to model the motor. Am I right? Is there a way to do it without the missing information?