The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1981
Filed:
Apr. 27, 1979
Applicant:
Inventors:
Hiroomi Fukuyama, Kanagawa, JP;
Shinichi Isobe, Tachikawa, JP;
Assignee:
Fujitsu Fanuc Limited, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318565 ; 340679 ;
Abstract
In a numerical control unit which has an interpolation function from generating command pulses in response to a distribution command and a servo system for driving a movable part of a machine in accordance with command pulses, a comparison is made between the error of the servo system a predetermined period of time after the distribution command is switched off and a preset value; when the error of the servo system is larger than the predetermined value, an alarm signal is produced to detect the occurrence of a malfunction.