The heave motion of drilling platforms is caused by the wave.
由于海浪的作用，钻井平台会产生升沉运动。
Therefore, a drill string heave compensation system is needed to compensate the heave motion.
因此，需要采用升沉补偿系统对钻柱升沉运动进行补偿。
A kind of active heave compensation system is put forward, and the key difficult problem to detect the heave motion signal of the deep-ocean mining equipment is solved.
提出了一种主动型升沉补偿系统，解决了深海采矿装置升沉运动信号采集的关键难题。
Moreover, the calculation process of the theoretical natural heave period was analyzed, and the influence on the heave motion of the caisson with different drafts was studied.
同时，分析了理论垂荡固有周期值的计算过程，并研究了不同吃水对气浮沉箱垂荡运动特性的影响。
On the basis of hardware in existence, the algorithm can make use of the journey and provide fidelity sense of pitch, roll, yaw, heave, surge and sway motion.
该算法在不增加系统硬件的前提下，充分利用液压缸现有行程，逼真地模拟飞机俯仰、滚转、偏航、升降、纵向和侧向平移运动。
A telescoping joint at the surface in floating offshore operations that permits vessel heave (vertical motion) while maintaining a riser pipe to the seafloor.
浮动海洋钻井作业时位于水面的伸缩节，它允许钻井船升降(垂直运动)而保持导管接触海底。
A telescoping joint at the surface in floating offshore operations that permits vessel heave (vertical motion) while maintaining a riser pipe to the seafloor.
浮动海洋钻井作业时位于水面的伸缩节，它允许钻井船升降(垂直运动)而保持导管接触海底。
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