基于角速率匹配法的船体变形实船测量技术研究

针对船体变形测量技术大多处于理论仿真的局限性,提出了基于实船试验的船体变形测量技术,考虑到测量速度的需要及静态变形角缓慢变化的特征,推导了基于角速率匹配法"准静态"模型。采用Kalman滤波技术对Mochalov模型和"准静态"模型下的变形角进行了估计,从实船试验的角度验证了船体变形的产生原因,拓展了"准静态"模型适用范围,进一步分析了舵操作对船体变形角的影响。试验结果表明,"准静态"变形角对缓变静态变形角跟踪效果良好,提高了静态变形角的测量精度,为光纤陀螺船体变形测量技术的实际应用奠定了坚实的基础。

Actual ship measurement technology research of ship deformation based on angular matching method

In order to solve the limitation of ship deformation measurement technologies on the basis of the-ory simulation phases, a measurement technology based on actual ship test was proposed. Considering the measurement speed and the slowly varying feature of static deforming angle, 'quasi-static' model was put forward. Kalman filter was used to estimate the ship's deforming angles based on the model proposed by Mochalov and 'quasi-static' model respectively, and hence the reasons of ship deformation were validated from the actual ship experiments. The applicable scope was expanded, and the influence of rudder opera-tion on ship's deformation angles was further analyzed. The experiment results indicated that the 'quasi-static' deforming angle can track the adagio process of static deforming angle well, thus further improving the measurement accuracy of 'quasi-static' deforming angle and laid a solid foundation for the actual ap-plication of optical fiber gyro in ship deformation measurement technology.