Linear encoder and a guide unit on which it is equipped

Details Linear encoder and a guide unit on which it is equipped Linear encoder and a guide unit on which it is equipped

1993-06-08

1995-05-16

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318687, G05B 1158

Patent

active

054163960

ABSTRACT:
A linear encoder detects the position of relative motion of two objects by providing an electromagnetic conversion element on one of the objects opposing a magnetic circuit on the other object. The magnetic circuit is composed of a yoke in which a plurality of projections, each acting as a magnetic pole, are formed so as to be arranged in a row at prescribed intervals in the direction of relative motion of the two objects. A permanent magnet is joined to the yoke.

REFERENCES:
patent: 4509001 (1985-04-01), Wakabayashi et al.
patent: 4958115 (1990-09-01), Miller
patent: 5047676 (1991-09-01), Ichikawa
patent: 5198740 (1993-03-01), Jacobsen et al.
patent: 5229669 (1993-07-01), Takei
patent: 5289088 (1994-02-01), Andoh

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