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Impact load is a common load，but it is also very special. Compared with other persistent loads，impact load has the characteristics of short duration and large output energy，leading to the transient vibration which may affect the system’s operation safety. In this paper，the active magnetic bearing （AMB）-flexible rotor was installed on an elastically supported base. The vibration characteristics of the elastic supported base under five types of impact loads，including double half-sine wave，half-sine wave，sine wave，triangle wave，and double triangle wave，were investigated. The influence of different impact load parameters on the acceleration of the base was obtained. In order to suppress the rotor vibrations，relative to the base induced by impact loads，a transient vibration compensation control strategy based on the base acceleration was derived. The theoretical and experimental results indicate that the elastic supported base and the AMBs-flexible rotor system installed on it both exhibit obvious impact characteristics under impact loads. These impact characteristics vary with different types of impact loads. The effect of base shock excitations on the rotor vibration can be effectively suppressed by the proposed algorithm.
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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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