波浪模拟标定系统的设计

基于重力加速度式波浪传感器的工作原理，设计了一套波高在05~9 m范围可调、周期在2~40 s连续可调的波浪模拟标定系统。系统根据正弦波浪理论，将波浪传感器安装在可做匀速转动的一圆形桁架上，波浪传感器的运动轨迹可看做正弦运动，以此进行模拟标定，再由控制系统控制波浪传感器的旋转半径和桁架的转动周期，从而实现对波高和波周期的模拟和标定。最后通过有限元对桁架的整体结构强度和刚度进行分析，并在理论上对系统的模拟标定精度作出分析，得到波高精确度为±2 mm，周期精确度为±01 s，达到设计和使用要求。

Design of wave simulation and calibration system

We design a set of wave simulation calibration system based on the principle of gravity acceleration wave sensor.Its parameters are adjustable forwave height of 0.5 ~ 9 m, and cycle of 2 ~ 40 s.We mount a wave sensor on a circular truss of uniform rotation based on sine wave theory.The trajectory of the wave sensor can be considered as a sine wave, which is simulated the calibration.Its control system controls rotational radius of the wave sensor and the rotational cycle of the truss in order to achieve the simulation and calibration for wave height and wave period.We eventually employ finite element analysis for truss overall structural strength and stiffness.We also analyze its calibration precision, and acquire the wave height accuracy of ± 2 mm and wave cycle accuracy of ± 0.1 s.The results satisfy the requirement of design and operation.