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海洋重力仪是安装在船上用作海洋重力测量的。它在海上工作时必会遇到各种干扰加速度的干扰。重力仪在设计时采取了克服水平方向加速度干扰的措施,使质量只能在垂直方向上平动,仪器测量的视重力值为重力加速度与干扰加速度的垂直加速度之和,经数据处理把重力加速度分离出来。 为了检验重力仪探头在海浪作用下是否产生非线性变化,必须先在室内进行模拟海浪的试验,并要求模拟海浪的试验装置只产生垂直方向平动。同时,因为海浪近似于简谐振动,所以也要求这个装置产生较严格的简谐运动。据此设计了正弦振动台。
Ocean gravimeters are mounted on board for ocean gravity measurement. It is bound to encounter a variety of interference acceleration interference when working at sea. Gravimeter in the design to take to overcome the horizontal acceleration interference measures, so that the quality can only be translated in the vertical direction, the measured value of the instrument as the gravity acceleration and acceleration of the vertical acceleration of the sum of acceleration, the data processing to the acceleration of gravity separate from. In order to check whether the gravimeter probe produces nonlinear changes under the action of waves, it is necessary to experimentally simulate the waves in the room and to require that the test device simulating the waves only produce translational translation in the vertical direction. At the same time, because the waves are similar to simple harmonic vibrations, this device is also required to produce more stringent harmonic motion. Based on this, a sine vibration table is designed.