| 摘要 |
FIELD: physics. ^ SUBSTANCE: analysed a(tj) and reference sine bsin0(ti) and cosine bcos0(ti) signals are given by readings of instantaneous values for the same time moments tj=t1, t2,Ç, tN, and the sine bsin0(ti) and cosine bcos0(ti) reference signals for the given frequency ë0k are simultaneously determined. The sine Qsink and cosine Qcosk area under the current versus voltage curve is determined for common solution points of a(bsin0) and a(bcos0). Values of amplitude Amk, phase åk and frequency ëk=ë0k are also simultaneously recorded. The signal for setting the next frequency ë0k+öë is then transmitted. All operations for determining Amk and åk are repeated until achieving ë0k=ën. ^ EFFECT: cutting on time required for determining amplitude, frequency and phase of separate signal components. ^ 2 dwg, 3 tbl |
