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详细分析了直流牵引电动机反馈试验台失调的原因，探讨了解决失调的一些措施，对牵引电动机试验及试验台设计均有一定的参考价值。
The causes of the misalignment of DC traction motor feedback test bench are analyzed in detail. Some measures to solve the mismatch are discussed. It is of certain reference value to the traction motor test and test bench design.