A Flux and Speed Observer for Induction Motors with Unknown Rotor Resistance and Load Torque and no Persistent Excitation Requirement

2020/09/02 by Pyrkin, Anton, Bobtsov, Alexey, Vedyakov, Alexey +3
#FOS: Electrical engineering #Systems and Control (eess.SY) #electronic engineering #information engineering

paper · doi:10.48550/arxiv.2009.00966

Abstract

In this paper we address the problems of flux and speed observer design for voltage-fed induction motors with unknown rotor resistance and load torque. The only measured signals are stator current and control voltage. Invoking the recently reported Dynamic Regressor Extension and Mixing-Based Adaptive Observer (DREMBAO) we provide the first global solution to this problem. The proposed DREMBAO achieve asymptotic convergence under an excitation condition that is strictly weaker than persistent excitation. If the latter condition is assumed the convergence is exponential.

Related

• A Robust Adaptive Flux Observer for a Class of Electromechanical Systems
• A high performance globally exponentially stable sensorless observer for the IPMSM: Theoretical and experimental results
• A globally exponentially stable position observer for interior permanent\n magnet synchronous motors
• Observer design for a special class of nonlinear systems
• Speed-sensorless state feedback control of induction machines with LC filter