基于数字液压缸组的波浪能装置压力匹配

为了解决分布式波浪能装置液压传动系统中不同支路液压油汇集时的压力不均衡问题，提出新型的数字液压缸组以替代常规的液压缸. 该液压缸组由多个面积不同的液压缸组成，由高速开关阀控制液压缸组切入传动系统的液压缸数目，这意味着可以控制不同液压支路的压力以实现不同支路之间的压力匹配. 通过建模仿真和半物理试验表明，与基于传统的液压缸的分布式波浪能装置相比，基于数字液压缸组的分布式波浪能装置能够有效减少在不同波浪载荷作用下的不同液压支路的压力不平衡，系统中不同浮力摆均能够吸收波浪能对外做功，驱动液压马达稳定持续运行.

Pressure matching of wave energy device based on digital hydraulic cylinder group

A new digital hydraulic cylinder group was proposed to replace traditional hydraulic cylinder in order to solve the pressure distribution imbalance among different hydraulic branches when the hydraulic oil of distributed wave energy conversion systems collected together. The proposed hydraulic cylinder group consisted of several cylinders with different piston areas and the number of the connected cylinders was controlled by high-speed switching valves, which meant that different hydraulic branches’ pressures could be controlled to reach pressure balance among them. The modeling simulation and semi-hydraulic experiment results show that the distributed wave energy convertor systems based on digital hydraulic cylinder group can effectively reduce the pressure imbalance among different wave forced hydraulic branches compared with those based on traditional hydraulic cylinder. All different flaps of different branches can absorb wave energy to drive the hydraulic motor to run steadily.