Title:
NUMERICAL CONTROLLER
Document Type and Number:
WIPO Patent Application WO/1989/012264
Kind Code:
A1
Abstract:
A numerical controller having a control function which permits a main axis to be stopped at any absolute position by a drive motor to determine the position of the main axis that controls the positioning. The numerical controller has storage means (6) for storing data related to a motor stop position and the rotational direction included in a control instruction via transfer means (3) which transfers the control instruction to the corresponding drive means, and has calculation means (7) which calculates a drive signal for stopping the motor at a predetermined position based on the stored data and feedback signals related to the speed and position of the motor. With the absolute position such as an angle and the rotational direction up to that position being instructed from the numerical controller, the motor side determines its position by itself.
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Inventors:
KOHARI KATSUO (JP)
KONO SHINICHI (JP)
TAKAHASHI HIRONOBU (JP)
KONO SHINICHI (JP)
TAKAHASHI HIRONOBU (JP)
Application Number:
PCT/JP1989/000535
Publication Date:
December 14, 1989
Filing Date:
May 29, 1989
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
G05B19/19; G05B19/414; G05D3/12; (IPC1-7): G05B19/19
Foreign References:
| JPH05983217A | ||||
| JPS61189303U | 1986-11-26 | |||
| JPS549295U | 1979-01-22 | |||
| JPS62184504A | 1987-08-12 |
Other References:
See also references of EP 0371146A4
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