中文摘要：

传统液压冲击器的冲击能参数调整需在2～3个挡位之间以手动操作的方式进行,且冲击能与冲击频率间的调整具有关联性.参数调整时,液压冲击器需停止工作.为改变这种状态,开发了新型基于微机控制的液压冲击器DBS300.该新型液压冲击器采用模糊控制策略实现控制,在拥有最大300 J冲击能情况下,其可实现冲击频率在0～6Hz间的独立调整.工作中可依据每次冲击后活塞不同反弹速度引起的后部气腔压力变化率来判别被冲击物体特性的改变.依据被冲击物体特性变化,新型冲击器可对冲击能或冲击频率实现独立自我调整,由此可提高冲击破碎工作效率,并具有对冲击器载具功率特性变化的良好适应能力.

英文摘要：

The impact energy of the conventional hydraulic impactor could be regulated manually between the second and the third grade,and its impact frequency couldn＇t be adjusted independently.Also,they have to stop working for adjustment.In order to alter this situation,a new hydraulic impactor,DBS300,has been designed.The impactor,controlled by microcomputer,adopts fuzzy control strategy.With 300 joules maximumimpactorenergy,the impactor＇ s frequency couldbe adjusted from 0 to 6 Hz steplessly.Characteristics of thework object couldbe estimated by piston＇ s rebound behavior which beassociatedgas cavity pressure variation.According to the changes of the object,the impactor could self-regulate impact energy and impact frequency,so that could improve the working efficiency and adapt the power of the loader.