Control system for unmanned carrier vehicle

Details Control system for unmanned carrier vehicle Control system for unmanned carrier vehicle

1991-04-01

1993-06-08

Black, Thomas G.

Boots, shoes, and leggings

36442405, 364443, 180169, G06F 1550

Patent

active

052185427

ABSTRACT:
A control system for an unmanned carrier vehicle, capable of automatically and independently traveling along a guiding line laid on a floor, provides a steering angle control unit and/or a velocity control unit. Herein, when the unmanned carrier vehicle is deviated from the guiding line, its deviation is detected. By performing a time-differentiation on the deviation, a deviation direction of the unmanned carrier vehicle is computed. In addition, a steering angle of a steering wheel of the unmanned carrier vehicle is detected by a sensor provided at a wheel of the unmanned carrier vehicle. Based on a result of a fuzzy inference to be performed on the deviation, deviation direction and steering angle, the steering angle control unit controls the steering angle of the unmanned carrier vehicle. Similarly, the velocity control unit controls a traveling velocity of the unmanned carrier vehicle. Incidentally, the fuzzy inference is performed in accordance with the predetermined fuzzy control regulation.

REFERENCES:
patent: 4930084 (1990-05-01), Hosaka et al.
patent: 4958288 (1990-09-01), Takahashi
patent: 5036936 (1991-08-01), Kawano et al.
patent: 5087969 (1992-02-01), Kamada et al.
Patent Abstracts of Japan, vol. 013, No. 165, Apr. 20, 1989, of Japanese Patent A-1,003,712.
Proceedings IEEE International Conference Symposium on Intelligent Control, 1987, pp. 94-99.
Electronic Engineering, vol. 61, No. 750, Jun. 1989, pp. 75 and 76 "Fuzzy Logic Processor for Real-Time Control".
Zadeh, "Making Computers Think Like People", Aug. 1984, pp. 26-32, IEEE Spectrum.
Schwartz, "Fuzzy Logic Flowers in Japan", Jul. 1992, pp. 32-35, IEEE Spectrum.

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