| Title |
FPGA Implementation of Recursive DFT based Phase Measurement Algorithm |
| Authors |
안병선(Ahn Byoung-Sun) ; 김병일(Kim Byoung-Il) ; 장태규(Chang Tae-Gyu) |
| Keywords |
위상측정 ; 유한비트근사 ; 위상 오차 Sliding-DFT ; FPGA |
| Abstract |
This paper proposes a phase measurement algorithm which is based on the recursive implementation of sliding-DFT. The proposed algorithm is designed to have a robust behavior against the erroneous factors of frequency drift, additive noise, and twiddle factor approximation. Four channel power-line phase measurement system is also designed and implemented based on the time-multiplexed sharing architecture of the proposed algorithm. The proposed algorithm's features of phase measurement accuracy and its robustness against the finite wordlength effects can provide a significant impact especially for the ASIC or microprocessor based embedded system applications where the enhanced processing speed and implementation simplicity are crucial design considerations. |