Multi-Frequency Homotopy Analysis Method for Coupled Van der Pol-Duffing System with Time Delay
Mathematics, ISSN: 2227-7390, Vol: 11, Issue: 2
2023
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Research on Mathematics Reported by Researchers at Zhejiang Normal University (Multi-Frequency Homotopy Analysis Method for Coupled Van der Pol-Duffing System with Time Delay)
2023 FEB 06 (NewsRx) -- By a News Reporter-Staff News Editor at Math Daily News -- Data detailed on mathematics have been presented. According to
Article Description
This paper mainly studied the analytical solutions of three types of Van der Pol-Duffing equations. For a system with parametric excitation frequency, we knew that the ordinary homotopy analysis method would be unable to find the analytical solution. Thus, we primarily used the multi-frequency homotopy analysis method (MFHAM). First, the MFHAM was introduced, and the solution of the system was expressed by constructing auxiliary linear operators. Then, the method was applied to three specific systems. We compared the numerical solution obtained using the Runge–Kutta method with the analytical solution to verify the correctness of the latter. Periodic solutions, with and without time delay, were also compared under the same parameters. The results demonstrated that it was both effective and correct to use the MFHAM to find analytical solutions to Van der Pol-Duffing systems, which were classical systems. By comparison, the MFHAM proved to be effective for time delay systems.
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