为降低单轴旋转运动引起的加速度计尺寸效应误差,提高单轴旋转惯导系统的精度,通过分析单轴旋转产生的加速度计尺寸误差效应以及由加速度计尺寸效应引起系统速度误差的机理,给出了加速度计尺寸效应误差的补偿方法。理论分析和仿真结果表明,加速度计尺寸效应误差不会引起定位误差的发散,但会增加无阻尼系统速度误差的振荡幅值,在水平阻尼状态下,会产生动态误差,引起更大的速度误差;通过补偿加速度计的尺寸效应误差,可以提高系统在旋转过程中的工作精度。

In order to reduce size effect error of accelerometers caused by single-axial rotation of the single-axial rotation of INS (SRINS), the size effect error of accelerometers caused by the rotation was analyzed, the error of velocity caused by the size effect error of accelerometers was researched, and the compensation method was offered. According to theory analysis and simulation results, the size effect error could not bring on emanation of positioning error, however, it would increase surge of velocity errors, for the damping system, it would bring on bigger velocity errors: The precision was improved in the rotating process by compensating the size effect errors.