Methods of, and systems, for monitoring and/or controlling mobil

Details Methods of, and systems, for monitoring and/or controlling mobil Methods of, and systems, for monitoring and/or controlling mobil

1985-02-08

1987-08-25

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

Alignment of axes nominally coaxial

356 5, 356375, 356400, 299 1, G01B 1100

Patent

active

046889370

ABSTRACT:
A system serves to establish the spatial positions of a cutter head of a tunnel driving machine with precision and monitors and/or controls this position automatically. The system uses a computer-controlled laser beam scanning technique to locate the three-dimensional positions of mirror devices in successive measuring stations spaced along the tunnel.

REFERENCES:
patent: 3552857 (1971-01-01), Hock et al.
patent: 4402603 (1983-09-01), Lill
patent: 4466667 (1984-08-01), Paulsen et al.
patent: 4560272 (1985-12-01), Harris

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