Parameter identifier

Details Parameter identifier Parameter identifier

1993-12-22

1996-02-06

Sircus, Brian

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318608, 364149, G05B 1142

Patent

active

054898293

ABSTRACT:
A parameter identifier which estimates parameters of a plant includes a model, a subtracter, a delay circuit, and a parameter adaptive mechanism. Disturbances are assumed to be represented by an impulse train consisting of a finite number (=m) of impulses. The model estimates n state variables and the output of the plant on the basis of the input and output of the plant. The subtracter outputs the error between the output of the plant and the estimated output. The delay circuit delays the state variables outputted from the model by N (.ltoreq.n+m+1) samples before applying them to the parameter adaptive mechanism. The parameter adaptive mechanism calculates the parameters on the basis of the products of the error and the delayed state variables. The number N is determined such that the effect of the disturbance on the error disappears in N samples from the beginning of the disturbance. This makes it possible for the parameter adaptive mechanism to output estimated parameters free from the influence of the disturbance. The present invention can also be applied to multi-inertia machinery.

REFERENCES:
patent: 5099197 (1992-03-01), Hauck et al.
patent: 5144549 (1992-09-01), Youcef-Toumi
patent: 5339016 (1994-08-01), Thoen
Gerhard Kreisselmeier, "Adaptive Observers with Exponential Rate of Convergence", IEEE Transactions on Automatic Control, vol. AC-22, No. 1, Feb. 1977, pp. 2-8.
Z. Iwai, "Problems in Adaptive Observers", System and Control, Japanese Association of Automatic Control Engineers, vol. 28, No. 6, 1984, pp. 354-363.
msr, Berlin 29, 1986, 5, S. 218-220, "Multimodellansatz zur Indentifikation von Regelstrecken mit schnellen Parameteranderungen", Unbehauen, et al.
Automatisierungstechnische Praxis atp 31, 1989, 10, S. 475-480, "Methoden der Proze.beta.fuhrung mit Simulationsmodellen", H. Schuler.
msr, Berlin 29, 1986, 7, S. 298-301, "Adaptive Drehzahlregelung eines Gleichstromantriebs mit Mikrorechner 1", Muller, et al.

Affiliated with

Also associated with

Rating

Parameter identifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Parameter identifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parameter identifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2177039