Δ-Σ ADC在旋变解码与电流采样中的应用  

The Application of Δ-Σ ADC on Resolver-To-Digital Conversion and Motor Current Sampling

作　　者：钟再敏[1] 陈振挺 ZHONG Zai-min CHEN Zhen-ting(Tongji University, Shanghai 201804, China)

机构地区：[1]同济大学,上海201804

出　　处：《微特电机》2017年第10期9-12,17,共5页Small & Special Electrical Machines

基　　金：国家科技支撑计划项目(2015BAG17B00);国家科技支撑计划项目(2015BAG03B00)

摘　　要：将Δ-ΣADC应用于永磁同步电机旋变解码与电流/位置同步采样中。根据旋变工作原理对旋变激励电路、返回缓冲电路和英飞凌TC275芯片的底层模块配置进行设计,并在MATLAB/Simulink环境中完成了信号仿真,根据仿真结果分析了反正切函数的缺点,并在相角观测器中对相位延迟进行补偿。针对Δ-ΣADC同时运用在电机旋变解码和电流采样的情况,设计了一个合适的同步方案。联合硬件在环和CANape工具,验证了旋变软件解码的准确性与同步方案的可行性。A-E ADC was applied to the resolver-to-digital conversion and the current/position synchronous samplingof PMSM. According to the operating principle of the resolver, the exciting circuit, the returning circuit and the configura-tion of the modules in the Infenion microcontroller TC275 were designed. The simulation was operated in the environment ofMatlab/Simulink. On the basis of the simulation result, the shortcoming of the arctangent function was analyzed and thephase delay was compensated in the angle-tracking observer. A proper design plan was put forward under the circumstanceof applying Δ-∑ ADC to both resolver-to-digital conversion and the current/position synchronous sampling. The accuracyof the software-based resolver-to-digital con,ersion and the feasibility of the synchronization design are verified in the helpof hardware-in-loop and CANape.

关 键 词：Δ-∑型模数转换器 旋变解码 电流/位置同步采样 相角观测器 硬件在环测试 

分 类 号：TN911.7[电子电信—通信与信息系统]