为研究液压冲击器的冲击能量控制特性，根据功率键合原理，搭建了氮爆式液压冲击器工作时冲程和回程两阶段的功率键图，据此建立了氮爆式液压冲击器的状态方程组．通过AMESIM平台构建了氮爆式液压冲击器仿真系统．该系统能综合考虑冲击器运动状态高频变化特点，可快速实现对氮爆式液压冲击器主要参数的计算．利用DBS500型氮爆式液压冲击器现有的设计参数进行仿真计算，计算结果与实测参数之误差在6％以内，表明所建模型是基本合理的．

In order to analyze the impact energy-controlling performance of nitrogen-inflating hydraulic hammer, the power bond graphs of both the stroke and the backhaul are presented based on the theory of power bond, and the state equations of the nitrogen-inflating hydraulic hammer are established. Afterwards, a simulation model, which takes into consideration the high-frequency variation of motion state of hydraulic hammer and realizes the fast calculation of main simulation parameters, is built in the AMESIM system. Then, a simulation is performed using the existing design parameters of DBS500 hydraulic hammer, and the error between the simulated and the test results is found to be less then 6%. It is thus concluded that the proposed model is basically correct and reliable.