针对直驱式波浪发电系统的工作效率较低问题，研究基于一种全封闭的振荡浮 子波浪发电系统，采取高速发电和低速储能的分段控制运行策略，结合基于无源性理论的 控制方法，研究了该系统的综合最大功率捕获控制问题． 为避免分段控制过程中造成的波 动和冲击现象，运用微分平滑性理论，对切换过渡过程的能量变化轨迹进行了规划． 仿真 结果表明，分段控制运行策略以及微分平滑性理论的应用，使振荡浮子式波浪发电系统达 到了既提高发电效率又避免冲击的控制效果．

Subsection control strategy of power generation at high-speed and energy storage at low-speed was used to solve the low efficiency problem of direct-drive wave power generation system based on the fully enclosed oscilla- ting floating wave power generation system． The control of integrated maximum power acquisition was studied com- bining with passivity-based control． In order to avoid the fluctuation and shock phenomena in the process of sub- section control，the energy trajectory of the switching process was planned by using the differential smoothing theo- ry． The simulation results show that the application of subsection control strategy and the differential smoothing theory can not only improve the power generation efficiency but also avoid shock impact．