Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1989-06-16
1991-08-06
Herrmann, Allan D.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
3644241, B60K 4106, B60K 4112
Patent
active
050367307
ABSTRACT:
A system for controlling automatic, multi-step or continuously variable, transmission equipped with a motor vehicle utilizing fuzzy logic. In the system, fuzzy production rules have been prepared based upon an expert driver's judgments and operation made on a vehicle with a manually shifted transmission. Various operating conditions including opening degree of a throttle valve and road speed of the vehicle are detected and from the detected value, various predictions are made such as an appropriateness of vehicle response to a gearshift intended by the driver and engine output change that would occur should the transmission be shifted to a given gear. These measured or estimated value are put on a common scale named universe of discourse and membership values of the rules are successively calculated. Among the rules, one rule is finally selected and according to the gear indicated in the selected rule, the current gear is shifted up or down or is held at the present position, in case of the multi-step transmission. Similarly, the speed ratio in the continuously variable transmission is determined from the selected rule.
REFERENCES:
patent: 4713764 (1987-12-01), Klatt
patent: 4777585 (1988-10-01), Kokawa et al.
patent: 4809175 (1989-02-01), Hosaka et al.
patent: 4841815 (1989-06-01), Takahashi
patent: 4842342 (1989-06-01), Takahashi et al.
patent: 4852007 (1989-07-01), Yasunobu et al.
patent: 4853858 (1989-08-01), Kumura
patent: 4922428 (1990-05-01), Takahashi
patent: 4930084 (1990-05-01), Hosaka et al.
"Suri Kagaku", Fuzzy Expert System by Eiichiro Tazaki, Feb. 1, 1987, pp. 46-55; Japan.
Text of seminar entitled "Fuzzy Theory and Expert System" by Kaoru Hirota, Apr. 20, 1986; Japan.
King et al., "The Application of Fuzzy Control Systems to Industrial Processes", Automatica, vol. 13, Pergamon Press, Great Britain, 1977, pp. 235-242.
Arai Yasuhisa
Matsui Hiroki
Sakai Ichiro
Yamamoto Masataka
Herrmann Allan D.
Honda Giken Kogyo Kabushiki Kaisha
Levi Benjamin
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