Title :
State and parameter estimation for step motors under actual working conditions
Author :
Imagi, A. ; Tomisawa, M. ; Koizumi, T.
Author_Institution :
Mitsubishi Electr. Corp., Hyogo, Japan
Abstract :
A method of measuring the dynamic behavior and characteristics of step motors without attaching mechanical sensors is described. Friction load torque and motor torque constant, as well as rotor position and velocity, are estimated by a sequential least square filter driven by sensed back electromotive force and current. The validity of the proposed filter is confirmed in detail by comparing the estimated results with direct measurements in both steady and transient state
Keywords :
filters; parameter estimation; rotors; state estimation; stepping motors; torque; transients; back electromotive force; dynamic behavior; filter; friction load torque; motor torque constant; parameter estimation; rotor position; rotor velocity; sequential least square filter; state estimation; steady state; step motors; transient state; Filters; Force sensors; Friction; Joining processes; Least squares approximation; Mechanical sensors; Mechanical variables measurement; Parameter estimation; Rotors; Torque;
Conference_Titel :
Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-87942-600-4
DOI :
10.1109/IECON.1990.149121
