状态自动切换法减小电控陀螺罗经机动误差的研究

陀螺罗经的机动误差是罗经的一项主要指标,减少机动误差是罗经技术的一个重要方面.本文以JYJD 型陀螺罗经为分析对象,在理论分析和系统仿真的基础上,提出了一套切实可行的通过辨识舰船运动状态实现电控罗经工作状态的自动切换以减小其机动误差的方法,实践表明,该法简便易行,对减小电控罗经的机动误差效果显著.

Research and Realization of Automatic Changes in Operating Mode to Reduce Ballistic Error of Electrically-torqued Gyrocompass

How to reduce the ballistic error-the main error of gyrocompass is an important aspect in designing the gyrocompass.So far as the electrically- torqued gyrocompass are concerned,now the practical methods to reduce the ballistic error are to prolong the period of oscilation in the motion of the gyrocompass or to limit the output of electromagnetic pendulum,but their actual effects are not ideal.On the basis of theoretical analysis and system simulation a new method that takes full advantages of the microprocessor and the electrically-torqued gyrocompass is proposed in this paper.By controling the microprocessor,the manoeuvre of the ship is identified and the operating mode of the gyrocompass is changed automatically to reduce its ballistic error. Then the realization and the actual effect of this method is also presented. It is proved in practice that this method can be realized easily and has a visible effect on the reduction of the ballistic error of the electrically-torqued gyrocompass.