Fırçasız doğru akım motorunun hız kontrolü için uyarlamalı geri adımlamalı kontrolcü tasarımı

Öz

Fırçasız doğru akım motorlarının hız kontrolünde yüksek performans elde edebilmek için doğrusal olmayan dinamik model ve modeldeki fiziksel niceliklerin tam olarak biliniyor olması gerekmektedir. Fakat, model parametrelerinin tam olarak bilinememesi, bazı fiziksel özelliklerin çalışma esnasındaki değişimleri ve yük momentinin belirsiz olması sebebi ile bu mümkün olmayabilmektedir. Parametrik model belirsizlikleri olması durumunda hız kontrolünü sağlayabilmek için uyarlamalı geri adımlamalı bir kontrolcü tasarımı bu çalışmada önerilmektedir. Kontrolcünün tasarımında model belirsizlikleri de göz önünde bulundurulmuş ve Lyapunov kararlılık analizi ile rotor hız hatasının sıfıra yakınsayacağı garanti edilmiştir. Pratik bir uygulamadaki tüm unsurların hesaba katıldığı bir benzetim ortamı ile tasarlanan kontrolcü farklı referans yörüngeler için sınanmış ve tatmin edici sonuçlar elde edilmiştir.

Anahtar Kelimeler

• Uyarlamalı geri adımlamalı kontrol,FDAM hız kontrolü,Lyapunov kararlılığı

Adaptive backstepping controller design for the speed control of brushless DC Motor

Abstract

Nonlinear dynamical model and its physical quantities have to be known exactly in order to obtain a high performance in the speed control of brushless direct current (BLDC) motors. However this may not be possible due to the lack of knowledge on the model parameters, the change of some physical characteristics during the operation and uncertainty on the load torque. An adaptive backstepping controller design is proposed in this paper to provide the speed control under parametric uncertainties. Model uncertainties have been considered in the design process of the controller and the convergence of the speed error to zero has been ensured via Lyapunov stability analysis. The designed controller has been tested for various reference trajectories considering all the practical issues in a simulation environment and satisfactory results have been obtained.

Keywords

• Adaptive backstepping controller,Speed control of BLDC motors,Lyapunov stability.

Kaynakça

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