Optical position and orientation sensing systems

Details Optical position and orientation sensing systems Optical position and orientation sensing systems

1983-12-19

1986-04-22

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

73455, G01B 1126, G01M 100

Patent

active

045838623

ABSTRACT:
Orientation and/or position of a first body, such as the inboard end 42 of a helicopter blade 21, with respect to a second body, such as a rotor hub arm 36, is sensed by determining the position of the images 93, 95-97, of light from sources 80, 81 passed through slits 89, 90 on detector arrays 91, 92. Signal processing means (FIG. 5, FIG. 11) provide signals indicative of such image positions, which can be used to determine, from simple trigonometry, the orientation and/or position of the first body.

REFERENCES:
patent: 2806402 (1957-09-01), Ferris
patent: 3386031 (1968-05-01), Able et al.
patent: 3690767 (1972-09-01), Missio et al.
patent: 4534650 (1985-08-01), Clerget et al.

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