Control apparatus for hydraulic elevators using fuzzy logic and

Details Control apparatus for hydraulic elevators using fuzzy logic and Control apparatus for hydraulic elevators using fuzzy logic and

1991-03-07

1993-11-30

Voeltz, Emanuel T.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 292, 187116, B66B 904

Patent

active

052667561

ABSTRACT:
A control apparatus for hydraulic elevators, including: a flow control valve for controlling the amount of oil in a hydraulic jack; a sensor device for detecting at least one of oil temperature and load pressure and producing corresponding input data; a correcting rule storing device for storing correcting rules of control instruction values corresponding to input data from the sensor device; a fuzzy reasoning processor for calculating control instruction values as fuzzy values from the input data and the correcting rules; a speed pattern correcting circuit for correcting the control instruction values based on the fuzzy values calculated by the fuzzy reasoning processor; and a speed controlling device for supplying the corrected control instruction values to the valve.

REFERENCES:
patent: Re33171 (1990-02-01), Ogasawara et al.
patent: 4760896 (1988-08-01), Yamaguchi
patent: 4775031 (1988-10-01), Nakamura et al.
patent: 4852007 (1989-07-01), Yasunobu et al.
patent: 5001640 (1991-03-01), Matsumoto et al.
Proc. 5th Conference on Artificial Intelligence Applications, 1989, pp. 287-294, S. Tsuji, et al., "Application of the Expert System to Elevator Group-Supervisory Control".

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