d-coil d 中文意思是什麼
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The hybrid claw - pole alternators have magnetic fields contributed by permanent magnet as well as excitation coil, and the advantages are high efficiency, have good low - speed characteristics, excitation adjustable and high flux densities. for the reason of complex claw - pole construction and 3 - d magnetic field distributions, there is lack of the research on the alternators
混合勵磁爪極發電機是由永磁體和勵磁線圈共同產生電機磁場的一種發電機，與傳統的爪極發電機相比有高效、低速性能好和集線圈勵磁的電壓調節性能與高磁通密度的優點，具有很好的研究前景和使用價值。 -
Secondly, methods of improving on probe are investigated in detail : using the electromagnetic shielding effect to decay the direct - coupled magnetic field and using the dual probe to control the energy flow, so as to make the probe to be shorter ; designing 3 - d pick - up coil array to increase detection sensitivity. at last, experiment system is set up to verify the simulation result and the comparing result shows simulation result agrees with experiment result
其次，對改進傳感器性能的幾種方法進行了詳細研究:利用電磁屏蔽效應以衰減在直接路徑上的磁場傳播、採用復式探頭激勵方式以實現能流控制，從而減小傳感器體積，模擬證實這兩種改進方案有效;設計三維周向檢測線圈陣列以提高缺陷檢測靈敏度，模擬結果證實三維探頭的周向靈敏性。 -
Mechanism of various ohmic and non - ohmic flux losses is reviewed. an equivalent circuit code is realized, where the 3 - d effect of helical coil and the distribution of armature ' s mirror current is considered
然後總結了各種ohmic磁通損失和非ohmic磁通損失機制，指出了它們各自的嚴重性和可能的解決辦法。
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