Electricity: motive power systems – Linear-movement motors
Patent
1991-12-03
1994-01-04
Stephan, Steven L.
Electricity: motive power systems
Linear-movement motors
318687, 318433, G05B 1302, G05B 19403
Patent
active
052763870
ABSTRACT:
Control method and apparatus for a moveable control member with n observed states, the apparatus incorporating a sliding mode control system, operable to maintain the state point of the moveable member on a predetermined hyperplane having n-1 dimensions, and comprising digital processor means operable to reference, at a first frequency, n-1 low order observed states to the predetermined hyperplane to establish a desired value of the highest order observed state, the control system further comprising comparator means operable to compare, at a second frequency, said desired value with the observed highest order state, the first frequency being less than the second frequency, and means responsive to the comparator means and operable to implement the control action necessary to maintain the state point on the predetermined hyperplane.
REFERENCES:
patent: 4962976 (1990-10-01), Takahashi
IBM Technical Disclosure Bulletin vol. 33, No. 4 Sep. 1990 New York U.S. pp. 377-381; "Sliding Mode Control for Arrivals and Small Movement" whole document.
Zeitschrift Fur Fl, wissenschaften vol. 23, No. 6, 1975, Feb. Braunschweig DE pp. 196-203; H. H. Von Salzen: "Regler Variabler Struktur Zur Reduzierung Der Komplexitat Von Flugzeugsystemen" paragraph 2-4; FIGS. 2-4.
Revue A. Tijdschrift vol. 7, No. 2, Apr. 1965, Bruxelles Be pp. 81-87; E. G. Gilbert: "Hybrid Computer Solution of Time Optimal Control Problems" pp. 82-87.
Jones Judson H.
Stephan Steven L.
Vickers Systems Limited
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