A high-precision angular rate sensitive method of spacecraft based on deflection current and deflection angle measurement is proposed in this paper, in the view of this problem that the angular rate sensitive accuracy of spacecraft using Magnetically Suspended Control & Sensing Gyroscope (MSCSG) is affected by the deflection disturbance of the rotor relative to the stator. Firstly, the moment model of the rotor and the Lorentz force magnetic bearing (LFMB) is established, and the main factors affecting the sensitive accuracy of MSCSG are analyzed in detail; The inertial coupling terms which have great influence on the sensitivity accuracy are effectively retained by the rotor deflection angular velocity and angular acceleration estimation. The high precision analytical expression of attitude angular rate is derived and the error analysis is carried out; It is verified by simulation and experiment that the high precision sensitive method proposed in this paper has higher sensitive precision than the traditional measurement method, which greatly improves the zero bias stability index of MSCSG. The method proposed in this paper has important reference significance for improving the integration of magnetic suspension rotor control and sense performance.

中文翻译：

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基于偏转电流和偏转角的磁悬浮控制传感陀螺角速率敏感方法

针对这一问题，提出了一种基于偏转电流和偏转角测量的高精度航天器角速度敏感方法，该问题会影响使用磁悬浮控制和传感陀螺仪（MSCSG）的航天器对角速度敏感度的准确性。转子相对于定子的挠度扰动。首先建立了转子和洛伦兹力磁轴承（LFMB）的力矩模型，并详细分析了影响MSCSG灵敏精度的主要因素；转子偏转角速度和角加速度估计有效地保留了对灵敏度精度有很大影响的惯性耦合项。推导了姿态角速率的高精度解析表达式，并进行了误差分析。通过仿真和实验证明，本文提出的高精度灵敏方法比传统的测量方法具有更高的灵敏精度，大大提高了MSCSG的零偏置稳定性指标。本文提出的方法对提高磁悬浮转子控制与传感性能的集成具有重要的参考意义。