Title:
NUMERICAL CONTROLLER
Document Type and Number:
Japanese Patent JP3227266
Kind Code:
B2
Abstract:
PURPOSE: To provide the numerical controller which can automatically adjust fuzzy inference part control rule parameters for the slow-motion correcting process of an object machine to be controlled.
CONSTITUTION: The numerical controller which performs position control by estimating a slow-motion quantity by fuzzy inference from measurement data in machine operation is equipped with a fuzzy parameter learning part 40 which learns fuzzy parameters so that the square of the difference between slow-motion measurement data and an estimated value becomes minimum, and corrected fuzzy parameters are used for actual fuzzy inference. The fuzzy parameters which are learnt and updated are used as the center value, width, and consequent constant of a triangular membership function of simple fuzzy inference and slow-motion data measured at any time in the machine operation are difference data between a semiclosed loop current position and a full-closed loop current position right after semiclosed loop current position data are inverted.
Inventors:
Akihito Shibata
Application Number:
JP9971293A
Publication Date:
November 12, 2001
Filing Date:
April 26, 1993
Export Citation:
Assignee:
Okuma Corporation
International Classes:
G05B13/02; G05B19/18; G05B19/404; G05B19/4155; (IPC1-7): G05B19/404; G05B13/02
Domestic Patent References:
| JP4251303A | ||||
| JP2274480A | ||||
| JP4342703A |
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)
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