Title:
METHOD AND DEVICE FOR ADJUSTMENT OF PHOTOELECTRIC CONVERTER OF SHAFT ROTATION ANGLE INTO CODE
Document Type and Number:
WIPO Patent Application WO/1991/011056
Kind Code:
A1
Abstract:
The essence of the invention consists in that first a preliminary adjustment of a measuring disk and an indicating disk (9, 2) is effected while turning the indicating disk (2) about the rotation axis of the shaft (4). On final adjustment of the measuring disk (9), two areas of its coding path (10) located at an angle (alpha1) are illuminated by means of illuminators (13), the bisector vector of the angle (alpha1) is determined and, while continuously turning the measuring disk (9) electric signals (18, 19) are generated by means of reading elements (15, 16), one of them being used as a reference signal and the other as a measuring signal. The eccentricity (e) of the path (10) is determined from the extreme values of the variable component of the phase difference (DELTAphi) of the signals (18, 19), and the moment of coincidence of the eccentricity vector and the bisector vector of the angle (alpha1) is determined from the change of sign and direction of said variable component. The disk (9) is moved by means of a mechanism (11) in a direction opposite to vector (e(Boolean not)) until the variable component of the phase difference (DELTAphi) equals zero. On final adjustment of the indicating disk (2) another area of the path (10) is illuminated, the adjusted disk (9) is turned and an additional electric signal (21) is generated. The deviations from the calculated value of the phase difference (DELTAphi) between the reference and measuring signals and between the reference and additional signals (18, 19, 21) are determined. Then the disk (2) is moved by means of the mechanism (6) until the deviations of the phase difference (DELTAphi) equal zero.
Inventors:
BABAIAN SLAVA KHUDANOVICH (SU)
SARKISIAN ROBERT ASHOTOVICH (SU)
SARKISIAN ROBERT ASHOTOVICH (SU)
Application Number:
PCT/SU1990/000017
Publication Date:
July 25, 1991
Filing Date:
January 18, 1990
Export Citation:
Assignee:
SP K BJURO RADIOELEKTRONNOI (SU)
International Classes:
H03M1/10; H03M1/30; (IPC1-7): H03M1/10; H03M1/24
Foreign References:
| US4772872A | 1988-09-20 | |||
| US3683195A | 1972-08-08 | |||
| GB1384891A | 1975-02-26 | |||
| SU1146710A1 | 1985-03-23 | |||
| SU1179529A1 | 1985-09-15 | |||
| SU1005129A1 | 1983-03-15 | |||
| SU796888A1 | 1981-01-15 |
Other References:
"Fotoelektricheskie Preobrazovateli Informatsii", pod. redaktsiei L.N. Presnukhina, 1974, MASHINOSTROENIE, (Moscow), pages 349-351.
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