Electric heating – Metal heating – Cutting or disintegrating
Patent
1991-07-29
1993-06-01
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
219 6913, 395904, B23H 720
Patent
active
052162184
ABSTRACT:
An adaptive control unit for an electrical discharge machine having a movable electrode for machining a workpiece, the adaptive control unit including a processing circuit for detecting several machining conditions between a time when the movable electrode begins machining the workpiece and a time when the movable electrode is moved away from the workpiece, a first memory for storing the detected machining conditions, a second memory for storing information representing several rules for defining a changing a machining state; and a determination circuit for determining a value representing a machining instability condition in accordance with the machining conditions stored in the first memory, and the rules stored in the second storage means. The rules stored in the second memory include fuzzy set representations, and the second memory further stores membership functions for the fuzzy set representations.
REFERENCES:
patent: 4071729 (1978-01-01), Bell, Jr.
patent: 4335436 (1982-06-01), Inoue
patent: 4559434 (1985-12-01), Kinoshita
patent: 4700039 (1987-10-01), Konno et al.
patent: 4806719 (1989-02-01), Seereider et al.
patent: 5012430 (1991-04-01), Sakurai
patent: 5117083 (1992-05-01), Kawamura
Evans Geoffrey S.
Mitsubishi Denki K.K.
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