Abstract
An adaptive backstepping recurrent fuzzy neural network (ABRFNN) control system is proposed to control the rotor position of a synchronous reluctance motor (SynRM) servo drive in this paper First, the field-oriented mechanism is applied to formulate the dynamic equation of the SynRM servo drive. Then, an adaptive backstepping approach is proposed to compensate the uncertainties in the motion control system. With the proposed adaptive backstepping control system, the rotor position of the SynRM drive possesses the advantages of good transient control performance and robustness to uncertainties for the tracking of periodic reference trajectories. Moreover, to further increase the robustness of the SynRM drive, a 1ITVN uncertainty observer is proposed to estimate the required lumped uncertainty in the adaptive backstepping control system. In addition, an online parameter training methodology, which is derived using the gradient descent method, is proposed to increase the learning capability of the RFNN. The effectiveness of the proposed control scheme is verified by experimental results.
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