Design of FPGA for Inductosyn Angle Calculation Algorithm Based on Feedback Tracking

The inductosyn angle measurement system is well-known for its high accuracy, good anti-interference ability and strong reliability, and is widely used in the aerospace field. Taking into account the decoding speed, decoding accuracy, anti-interference and feasibility, it is decided to use the amplitude detection method based on feedback tracking to perform the angle calculation operation on the two-phase induced electromotive force output by the inductosyn body. In order to increase the operating rate of the internal signal, the process is developed using FPGA. The results show that the proposed design is consistent with the results of the system-level simulation and roughly meets the tracking requirements.