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AssigneeHitachi, Ltd.
InventorsMasaaki Nakajima, Satoshi Hattori, Yutaka Saito, Yasunori Katayama, Yasuo Morooka, Junzo Kawakami
Estimating the term…
In order to control an apparatus, such as a rolling mill, a control device may use a pre-set operation pattern to generate a pre-set command signal, which is then modified. That first modification may be part of a feedback loop in set command signal, which is then modified. That first modification may be part of a feedback loop in logic. Then the relationship between the modified pre-set command signal and the variation of the variable operation device is investigated to generate a compensation signal which is used to modify further the pre-set command signal. In a feedback loop, that further modification may compensate for changes in the operating point of the loop, due to changes in the apparatus being controlled. In a fuzzy logic arrangement, the compensation signal may be a further control pattern developed by the control device itself, which is combined with the pre-set patterns by fuzzy logic. The control device may be in the form of a series of modules.
A control system having a detecting device including a controlled apparatus operated with an actuator, a control device for controlling said actuator and a detector for detecting operations of said controlled apparatus and said actuator, said control device comprising:
A control system having a plurality of actuator control devices for generating detecting signals of a plurality of detectors, command difference signals for said controlled apparatus using output signals from said detectors and target output signals and operating values for said controlled apparatus, and a controlled apparatus controlled by operations of said plurality of actuators, said actuator control device comprising:
Dependencies are inferred from the claim text.