Based on costas loop algorithm, the hardware and the software of a kind of resolver-to-digital converter was designed. Throughout qualitative analyzed the influences of the output angle signal when the resolver contains amplitude imbalance and imperfect quadrature between the two output sin/cos signals, an error correction module was designed and the simulation analysis was given. For the research of steady performance and dynamic performance, setting up a performance comparison test platform between the RDC this article designed and AU6802. The experimental results verified the reliability of the design scheme.%基于考斯塔斯环路解码算法,设计了一种车用磁阻式旋变解码电路,并进行软硬件的设计与实现.通过定性分析非理想状况下旋变两相绕组输出信号含有幅值不对称和不完全正交误差分量时,对角度解算的影响,设计相应的校正模块,并给予仿真分析.搭建与专用解码芯片AU6802性能对比的测试平台,对所设计的旋变解码器进行稳态测角性能和动态性能的试验研究.试验结果验证了该旋变解码器设计方案的可行性.
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