基于AD2S1205的旋变解码系统设计

Design of decoding system to rotary transformer based on AD2S1205

为了利用磁阻式旋转变压器获取永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)的转子位置信息和转速信息,基于解码芯片AD2S1205,设计了旋变解码系统。首先分析了磁阻式旋转变压器的工作原理,然后设计出旋变解码系统的硬件电路,并通过C代码实现转子位置信息和电机转速信息的计算。最后,利用单片机和电机驱动板驱动电机旋转,并通过CAN总线实时将转子位置信息和电机转速信息发送到dSPACE。实验结果表明,该旋变解码系统能够有效地解算出电机转子的位置信息和电机的转速信息。

In order to obtain the rotor position information and speed information of permanent magnet synchronous motor with magnetic resistance rotary transformer,the system of spin decoding is designed.The design is based on decoding chip AD2S1205.Firstly,the working principle of the magnetic resistance rotary transformer is analyzed.Then the hardware circuit of the rotary decoding system is designed,and the rotor position information and motor speed information are calculated by C code.Finally,single chip microcomputer and motor drive plate are used to drive motor rotation.The rotor position information and motor speed information are sent to dSPACE in real time through the CAN bus.The experimental results show that the system can effectively solve the motor rotor position information and the motor speed information.