Abstract: A resolver transformer is an electromagnetic angular sensor that converts the rotor angle into sine and cosine signals. The resolver transformer has a simple and robust structure and strong anti-interference ability, so it has been widely used in many fields such as electric vehicles, servo drives, and permanent magnet motors. This paper introduces the resolver transformer and the current research status at home and abroad, as well as the two common methods of resolver angle calculation. Considering the need for experiments and testing, a design of the resolver experimental platform is proposed. The feasibility and error analysis of the resolver decoding algorithm are evaluated by comparing the output values of the high-precision encoder and the experimental resolver decoding. Finally, a brief description of the design of the permanent magnet motor control module, drive board, and motor control strategy is given. The design of the resolver experimental platform provides convenience for verifying the decoding algorithm of the resolver, measuring accuracy, and analyzing errors, thereby accelerating the application and research speed of the resolver.