Identification of Static Moment and Inertia Moment of Electric Drive with the Method of Least Squares

The paper considers an identification method based on the method of least squares (LSM identification) to evaluate inertia moment and static moment of a single-mass electric drive. The method uses an equation obtained by integrating the left and right parts of the main equation for electric drive motion. This eliminates differential operator and greatly improves identification accuracy. The identification process is periodical. The observed data is updated after each observation period. This allows zeroing identification arrays which solves the conditionality problem for equation system coefficients obtained with the method of least squares. Furthermore, updating integrated variables allows avoiding arithmetic data overflow error which makes the method practically applicable. Simulation experiment showed the efficiency and high accuracy for LSM identification of electrical drive mechanics parameters.