EP0436040A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Numeric controller
Assignee: Fanuc Corp
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Filing: 1990-07-12
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Granted: —
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Expires: 2010-07-12
Abstract
Abstract This invention relates to a numeric controller for controlling adaptably a servo appliance. The load current (Ln) and speed (Vn) of a spindle motor (74) are used as fuzzy inputs, and fuzzy control means (80) executes fuzzy inference by using them and outputs a speed control signal (Cng) for controlling the speed of the spindle motor (74). Smooth speed control is possible by controlling the speed of the spindle motor (74) by this signal. <IMAGE>
Inventors
- 👤 Takao Sasaki
- 👤 Kentaro Fujibayashi
- 👤 Takashi Toyota Jidoshokki Kuma Shataku B-502 Endo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
G; G05; G05B; G05B13/00; G05B13/02; G05B13/0265; G05B13/0275; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B19/4163; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34065; G05B2219/34377; G05B2219/37; G05B2219/37285; G05B2219/37347; G05B2219/49; G05B2219/49077; Y; Y10; Y10S; Y10S706/00; Y10S706/90; Y10S706/902; Y10S706/903; Y10S706/904
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
A numerical control apparatus for adaptively controlling a servo apparatus, comprising fuzzy control means for effecting a fuzzy inference by receiving data of a load current and a velocity of the servo apparatus as a fuzzy input and outputting a velocity control signal for controlling the velocity of the servo apparatus.
Claim 2
Dependent Claim
28 words
A numerical control apparatus according to claim 1, wherein the servo apparatus is a spindle motor and the velocity control signal is output as an override control signal.
Claim 3
Dependent Claim
27 words
A numerical control apparatus according to claim 1, wherein the servo apparatus is a servomotor and the velocity control signal is output as an override control signal.
Claim 4
Dependent Claim
43 words
A numerical control apparatus according to claim 1, wherein fuzzy rules and membership functions incorporated in the fuzzy control means are previously converted into an inference data base ready to be executed, and the fuzzy inference is effected using the inference data base.
Claim 5
Dependent Claim
27 words
A numerical control apparatus according to claim 1, wherein a plurality of inference data bases are prepared and are selectively read out in accordance with a workpiece.
Claim 6
Dependent Claim
25 words
A numerical control apparatus according to claim 1, wherein the fuzzy control means is constituted by an independent fuzzy controller arranged in the apparatus body.
Claim 7
Dependent Claim
27 words
A numerical control apparatus according to claim 1, wherein the fuzzy control means is constituted in the form of software which is processed by the apparatus body.
References Cited (Backward Citations)
No citation records indexed.
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