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An Automatic Ball Balancer （ABB） can entirely eliminate the unknown imbalance of the rotor above the critical speed. However，it has the disadvantage of causing large amplitude resonance response and unstable oscillation near the critical speed. To overcome these shortcomings and improve its vibration suppression performance，this paper proposes the addition of a Dynamic Vibration Absorber （DVA）. Using the Jeffcott eccentric rotor model as the research object，dynamic equations are established to control the unbalanced vibration of the rotor when the DVA and ABB are used either separately or in combination，based on the Lagrange equation. The harmonic balance method is used to solve the amplitude expression of the new coupling system，and the influence laws of each parameter on the steady-state amplitude-frequency curve are analyzed to obtain more suitable parameters. The steady-state amplitude-frequency characteristic diagram and the transient amplitude time-domain change curves are obtained using the Runge-Kutta numerical calculation method. The comparison results show that the new scheme of combining the two methods effectively reduces the vibration level of the rotor when passing through the critical resonance region，and causes the rotor to attenuate to zero amplitude above the critical speed. This new scheme achieves the goal of combining the advantages of the two methods and provides superior vibration suppression.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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