提出一種對高速轉子軸心位移非接觸測量的差動電感式傳感器結構,分析了傳統電橋檢測電路的不足,設計了一種基于“比率脈寬”調制解調信號檢測電路對測量誤差進行補償,在此基礎上對所研制的傳感器的靜態、動態性能進行了測試。在控制力矩陀螺上進行初步試驗,試驗結果表明:該傳感器能滿足航天器姿態控制關鍵執行部件長壽命電磁軸承高速轉子軸心檢測的性能要求。
關鍵詞:控制力矩陀螺;電磁軸承;位移傳感器

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