Implementation of Digital Detection Scheme for Closed-Loop FOG Based on DSP and FPGA

Digital closed-loop FOG detection scheme based on square wave bias and digital phase ramp feedback technique is introduced. A novel implementation of the detection scheme is developed with digital signal processor (DSP) and field programmable gate array (FPGA). Design and implementation of the detection system are discussed. Timing control and closed-loop signal processing and are implemented in FPGA. To restrain the random noise in the real-time system, an adaptive transverse filter is designed based on the least mean square (LMS) algorithm and is implemented in DSP for real-time filtering. Experiments and tests show that good performances have been achieved and the implementation scheme is of great practical value