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通过对挠性摆式加速度计偏值误差的来源分析,提出了导电游丝引入的干扰力矩是偏值误差的重要来源的观点。由于加速度计的偏值误差影响因素较多且无法采用实验的方法逐一分析,因此建立人工绕线方式下导电游丝的数学模型,采用有限元方法对导电游丝进行分析,发现相同焊接位移下,绕线方式对偏值误差有较大影响。在此基础上,提出了导电游丝的多种优化方案,以期为减小该型加速度计的偏值误差奠定基础。
Based on the source analysis of the bias error of the flexible pendulum accelerometer, the view that the disturbance torque introduced by the conductive hairspring is an important source of bias error is proposed. Because the accelerometer bias error has many influencing factors and can not be analyzed experimentally one by one, the mathematical model of conductive hairspring with artificial winding method is established and the conductive hairspring is analyzed by finite element method. It is found that under the same welding displacement, Line mode has a greater impact on bias error. On this basis, a variety of optimization schemes of conductive hairspring are proposed in order to lay a foundation for reducing the bias error of the accelerometer.