Mathematical modeling and analysis of fractional-order brushless DC motor

Zafar Z. U. A., Ali N., Tunç C.

ADVANCES IN DIFFERENCE EQUATIONS, vol.2021, no.1, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 2021 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1186/s13662-021-03587-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Metadex, zbMATH, Directory of Open Access Journals, Civil Engineering Abstracts
  • Keywords: Brushless DC motor (BDCM), Chaotic attractor, Product integration, Atangana-Baleanu derivative, Liouville-Caputo derivative, Lyapunov exponent, DIFFERENTIAL-EQUATIONS, NUMERICAL SIMULATIONS, STABILITY, STABILIZATION, SYNCHRONIZATION, ATTRACTORS, EXISTENCE, DYNAMICS, SYSTEMS, CAPUTO
  • Van Yüzüncü Yıl University Affiliated: Yes


In this paper, we consider a fractional-order model of a brushless DC motor. To develop a mathematical model, we use the concept of the Liouville-Caputo noninteger derivative with the Mittag-Lefler kernel. We find that the fractional-order brushless DC motor system exhibits the character of chaos. For the proposed system, we show the largest exponent to be 0.711625. We calculate the equilibrium points of the model and discuss their local stability. We apply an iterative scheme by using the Laplace transform to find a special solution in this case. By taking into account the rule of trapezoidal product integration we develop two iterative methods to find an approximate solution of the system. We also study the existence and uniqueness of solutions. We take into account the numerical solutions for Caputo Liouville product integration and Atangana-Baleanu Caputo product integration. This scheme has an implicit structure. The numerical simulations indicate that the obtained approximate solutions are in excellent agreement with the expected theoretical results.