Abstract
This paper studies the dynamic evolution behaviors of the hydro-turbine governing system by using Adams–Bashforth–Moulton algorithm. Based on the non-autonomous dynamic model of the hydro-turbine governing system, the effects of the frequency and intensity of periodic excitation on the dynamic characteristics of the hydro-turbine governing system are analyzed in detail. Due to the different scales between the natural frequency and the excitation frequency, the fast-slow effect is obviously found on the behavior of the system under different motion modes. Furthermore, the influence rules of the fast-slow effect for the dynamic behavior of the hydro-turbine governing system are given. The results of the study can contribute to the optimization analysis and control of the hydro-turbine governing system in practical process.
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Acknowledgements
This work was supported by the scientific research foundation of National Natural Science Foundation–Outstanding Youth Foundation (51622906), National Science Foundation (51479173), Fundamental Research Funds for the Central Universities (201304030577), Scientific research funds of Northwest A&F University (2013BSJJ095), the scientific research foundation on water engineering of Shaanxi Province (2013slkj-12), the Science Fund for Excellent Young Scholars from Northwest A&F University and Shaanxi Nova program (2016KJXX-55).
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Zhang, H., Chen, D., Xu, B. et al. The slow-fast dynamical behaviors of a hydro-turbine governing system under periodic excitations. Nonlinear Dyn 87, 2519–2528 (2017). https://doi.org/10.1007/s11071-016-3208-0
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DOI: https://doi.org/10.1007/s11071-016-3208-0