Tuning of Parametric Excitation for Rotor Balancing
| Autor: | Ricardo Ugliara Mendes, Fadi Dohnal |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 1264:012036 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/1264/1/012036 |
| Popis: | Residual unbalance is the primary source of vibration in rotating machines. In many cases, the time and, consequently, the cost involved in the balancing procedure is high due to the need to accelerate the rotor up to every critical speed to be balanced in every iteration of the traditional influence coefficients method. Recently, a novel method which does not need to accelerate the rotor up to every critical speed to be balanced was proposed. In this method, active magnetic bearings are used to apply a parametric excitation at the combination resonance frequencies inducing an effect similar to transferring kinetic energy from a lower mode to higher modes. Therefore, maximizing the energy transferred is mandatory to obtain a high signal-to-noise ratio and capture the correct responses of the higher modes to successfully balance the rotor. This paper study the sensibility of the kinetic energy transfer between modes to the parameters of the parametric excitation; namely amplitude, frequency, and phase. The analyses are performed via computational simulations of a flexible rotor sustained by two AMBs and with three critical speeds in its operational range. |
| Databáze: | OpenAIRE |
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