极靴是电机上的关键零件，其作用是使气隙磁阻减小，改善磁场分布，并使励磁绕组容易固定。

Pole pieces, key parts on electrical motor, reduce the reluctance of the air-gap; improve the static magnetic field distributions and fix the excitation windings.

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首次提出采用永磁励磁的转子结构，并对补偿电机内部磁场进行了仿真，对磁钢的尺寸进行了优化设计。

At the first time a permanent excitation structure is used in the design of CPA. The inner magnetic field of CPA is simulated and fundamental dimension of permanent magnet material is optimized.

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其传感器是利用对磁场具有高灵敏度的钴基非晶态合金丝作为敏感材料，并采用单磁芯双绕组结构、多谐振荡桥励磁，它是一种体积小、性能高的新型磁场传感器。

Using single amorphous-core and double-winding as the sensitive element excited by multivibrator bridge, a kind of weak magnetic sensor with small size and high performance is developed.

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