Fixed-Point DSP Realizing Highly-Precise FIR Digital Filter
Ri-gui Zhou · Journal of Electron Devices · 2003
The paper researches on adopting the fixed-point DSP in measuring alternating voltage and current signals in the electronic calibration system. Owing to calibrating instruments, it requires that the results of measurement have the quality of the high accuracy and stability. The article employs efficiently FIR filter algorithm and makes great improvements and supplements on the algorithm, which make the FIR algorithm be able to rid aiguille signals caused by external interferences and solve the problem of the signal zero-floating. The consequence is so satisfactory that it can make the measurement high stable and accurate, in 0.02 %. The research on the FIR algorithm is emphasis and difficulty in this thesis.