Title :
High precision phase measurement using reduced sine and cosine tables
Author :
Mahmud, Syed Masud
Author_Institution :
Dept. of Electr. & Comput. Eng., Wayne State Univ., Detroit, MI, USA
Abstract :
The author proposes a microprocessor-based hardware implementation of a high-precision phase measurement technique. The hardware implementation requires two reduced tables: a sine table and a cosine table. If each table has (i(i+5)/2) entries, then the phase can be accurately determined even if the signals are distorted by any number of harmonics in the range of 2nd through ith harmonics. This design could easily be fabricated to make a 28-pin custom VLSI chip
Keywords :
VLSI; computerised instrumentation; computerised signal processing; digital signal processing chips; microcomputer applications; phase measurement; cosine table; custom VLSI chip; harmonics; microprocessor-based hardware; phase measurement; reduced tables; sine table; Distortion measurement; Frequency conversion; Frequency measurement; Harmonic distortion; Phase distortion; Phase measurement; Pulse measurements; Signal processing; Signal sampling; Time measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1989. IMTC-89. Conference Record., 6th IEEE
Conference_Location :
Washington, DC
DOI :
10.1109/IMTC.1989.36857
