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In this paper the investigation and basic principles of a small-size hydrau- lic exciter are described. The exciter is equipped with an exciting force-con- trol unit w hich can maintain a constant exciting force during the yariation of the exciting frequancy. Some experiments are carried out to study the charac- teristics of this cxciter and to determine its main capacities and the range of its application.
In this paper the investigation and basic principles of a small-size hydrau lic exciter are described. The exciter is equipped with an exciting force-con- trol unit w hich can maintain a constant exciting force during the yariation of the exciting frequancy. Some experiments are carried out to study the charac- teristics of this cxciter and to determine its main capacities and the range of its application.