Adaptive estimation of phase or delay for both leading and laggi

Details Adaptive estimation of phase or delay for both leading and laggi Adaptive estimation of phase or delay for both leading and laggi

1990-09-28

1992-06-23

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328 55, 307262, 307602, 307603, 307511, H03K 513, H03K 522

Patent

active

051246562

ABSTRACT:
Apparatus for measuring or compensating for phase or time delay between a reference signal and a desired signal produces an approximate error signal by differentially summing the desired and reference signals. The appoximate error signal is then used, in a feedback loop, to control application of an adaptive delay to each of the reference and desired signals. The total lead or lag difference is represented by the difference between the two delays applied to the reference and desired signals, respectively. The phase or time delay measurement or compensation arrangements may be applied to linear variable differential transformers, synchronous AM detectors, zero crossing detectors and phase locked loops. Variations on this basic technique can yield substantially exact measurement or compensation. The invention is applicable to sampling arrangements including oversampling/decimation or interpolation/decimation to increase compensation accuracy to any desired degree.

REFERENCES:
patent: 4229824 (1980-10-01), En
patent: 4951000 (1990-08-01), Dautriche
Yassa et al., "Adaptive Phase/Delay Estimation for Lead/Lag Phase Shifts", Conference Record, Twenty-Third Asilomar Conference on Signals, Systems & Computers, Oct. 30-Nov. 1, 1989, pp. 284-288.
Robinson-Halpern, LVDT Product Catalog, pp. 1-5, 10 and 11.
Etter et al., "Adaptive Estimation of Time Delays in Sampled Data Systems", IEEE Trans. on ASSP, vol. ASSP-29, No. 3, pp. 582-587, Jun. 1981.
Etter, "Identification of Sparse Impulse Systems Using an Adaptive Delay Filter", Proc. ICASSP, 1985, pp. 1169-1172.
Reed et al., "Time Delay Estimation Using the LMS Adaptive Filter-Static Behavior", IEEE Trans. on ASSP, vol. ASSP-29, No. 3, pp. 561-570, Jun. 1981.
Feintuch et al., "Time Delay Estimation Using the LMS Adaptive Filter-Dynamic Behavior", IEEE Trans. On ASSP, vol. ASSP-29, No. 3, pp. 571-576, Jun. 1981.
Cabot, "A Note on the Application of the Hilbert Transform to Time Delay Estimation", IEEE Trans. on ASSP, vol. ASSP-29, No. 3, pp. 607-609, Jun. 1981.
Etter et al., "System Modelling Using an Adaptive Delay Filter", IEEE Trans. on Circuits and Systems, vol. CAS-34, No. 7, pp. 770-774, Jul. 1987.
Friedlander et al., "A Parametric Technique for Time Delay Estimation", IEEE Transactions on Aerospace and Electronic Systems, vol. AES-20, No. 6, Nov. 1984, pp. 729-735.
Smith et al., "Adaptive Interpolated Time-Delay Estimation", IEEE Transactions on Aerospace and Electronic Systems, vol. AES-21, No. 2, Mar. 1985.
Youn et al., "Comparison of Two Adaptive Methods for Time Delay Estimation", IEEE Transactions on Aserospace and Electronic Systems, vol. AES-20, No. 5, Sep. 1984.
Etter, "Adaptive Identification of Sparse Impulse Response Systems", Proc. 18th Asilomar Conf. Circuits, Syst., Comput., Nov. 1984, pp. 15-19.

Affiliated with

Also associated with

Rating

Adaptive estimation of phase or delay for both leading and laggi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive estimation of phase or delay for both leading and laggi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive estimation of phase or delay for both leading and laggi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-935656