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一种基于电磁轴承的控制力矩陀螺用非接触位移传感器设计
刘满贵
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提出一种对高速转子轴心位移非接触测量的差动电感式传感器结构,分析了传统电桥检测电路的不足,设计了一种基于“比率脉宽”调制解调信号检测电路对测量误差进行补偿,在此基础上对所研制的传感器的静态、动态性能进行了测试。在控制力矩陀螺上进行初步试验,试验结果表明:该传感器能满足航天器姿态控制关键执行部件长寿命电磁轴承高速转子轴心检测的性能要求。
关键词:控制力矩陀螺;电磁轴承;位移传感器
Abstract :On the basis of analyzing the shortage of in2 specting circuit of t raditional elect ric bridge , a sensor st ructure of differential inductance style for non2tangent measuring axes displacement of high speed rotor is pro2 posed. An inspecting circuit with modulated and demod2 ulated signal based on ratio pulse width is designed to compensate for measuring error. The static and dynamic characteristic of developed sensor are tested and primary
experiment is made on CMG( Cont rol Moment Gyro2 scope) . The result shows that the developed sensor can meet the requirement of axes measuring for high speed rotor of active magnetic bearings with long life which is a key performing component for attitude cont rol of space crafter.
Key words :cont rol moment gyroscope ; active magnetic bearing ;displacement sensor
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