摘  要： 针对磁阻式旋转变压器的输出信号电压不满足数字式解码芯片所要求的输入电压范围问题，该文对磁阻式旋转变压器的信号绕组进行了阻抗匹配分析。首先建立了信号绕组的PSpice等效电路模型，然后仔细分析了信号绕组的电感参数、电阻参数及输出信号的滤波电容参数对输出电压幅值的影响，最后通过对实际应用的磁阻式旋转变压器的测试验证了分析方法与分析结果的正确性和可行性。
关键词：磁阻式旋转变压器；阻抗匹配；数字式旋变解码芯片

Abstract: The output signal voltage of the variable-reluctance resolver does not satisfy the input voltage requirements of the resolver-to-digital converter, this paper analyzed the impedance matching of the output signal windings of the variable-reluctance resolver.Firstly built the equivalent PSpice circuit model of the output signal windings was built, then analyzed the influence of inductance parameter, resistor parameter and filter capacitor parameter on the output signal voltage, and finally the correctness and feasibility of the proposed analysis method were verified through the test experiments on the practical resolver.
Key words: variable-reluctance resolver; impedance matching; resolver-to-digital converter1