旋转调制微机电惯性系统方案研究

微机电惯性系统具备小体积优势，但现阶段系统精度仍在消费级与战术级之间。研究了旋转调制技术在微机电惯性系统中的应用，探讨了基于PCB小型化电机的微旋转方案，并开展了单轴旋转调制验证试验，以探索旋转调制技术对微机电惯性系统性能的提升作用。结果表明，在微机电陀螺精度约为2(°)/h的条件下，该方案能够实现约0.2n mile/10min的导航精度，相较于同等惯性器件条件下的捷联式系统，精度提高了不止1个数量级，证明了该方案能够有效提高微机电惯性系统的精度。

Research on the Rotating Modulation Scheme of MEMS Inertial System

The MEMS inertial system has the advantage of small size, but the accuracy of the system is still ranging from the consumption level to tactical level. This paper studies the application of rotary modulation technology in MEMS inertial systems and discusses the MEMS rotation scheme of the miniaturized motor based on PCB. The verification test of uniaxial rotating modulation is carried out to explore the role of rotating modulation technology in improving the performance. The results show that under the condition that the accuracy of MEMS gyro is about 2(°)/h, the navigation accuracy of this scheme is about 0.2n mile/10min, which is at least one order of magnitude higher than that of strapdown system under the condition of the same inertial device. The proposed scheme can effectively improve the accuracy of the MEMS inertial system.