设计了一种一体化的内循环数字液压缸。通过设计与计算，发现这种完全一体化的内循环数字液压缸具有一定的可行性，能在工业上推广，给液压传动带来了新的活力。%A fully integrated digital hydraulic actuator with inner circulation was designed. Through design and calculation,it is found that the fully integrated digital hydraulic actuator has certain feasibility and can be promoted in industry. It brings new vitality to hydraulic transmission.
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