Title:
APPARATUS FOR ABSOLUTE POSITION MEASUREMENT
Document Type and Number:
WIPO Patent Application WO1991012493
Kind Code:
A3
Abstract:
An apparatus for measurement of absolute position of a movable machine member is provided. The machine member is moved by a motor and reduction device producing rotation of the machine member in proportion to relative rotation of the motor rotor and motor stator. Two angular position measuring devices provide output signals representing relative positions related to the machine member position and differentiated one from another.
Inventors:
BAILEY EDWARD J (US)
Application Number:
PCT/US1991/000870
Publication Date:
June 10, 1993
Filing Date:
February 11, 1991
Export Citation:
Assignee:
ABB ROBOTICS INC (US)
International Classes:
G01B21/22; B25J19/02; G01B7/00; G01B7/30; G01D1/16; G01D5/245; G05B19/33; G05D3/12; (IPC1-7): G01D5/243; G01D1/16; G05B19/33
Foreign References:
| GB2185594A | 1987-07-22 | |||
| US4632612A | 1986-12-30 |
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