Modular wireless linear motor

Details Modular wireless linear motor Modular wireless linear motor

1998-03-17

1999-07-20

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Linear

318135, H02K 4100

Patent

active

059259434

ABSTRACT:
A path module for a linear motor, for use with a linear motor stage, includes switching sensors and encoder sensors. The switching sensors energize only those armature windings that are within the magnetic influence of the linear motor stage. The stage carries an encoder magnet having magnetic zones of alternating polarity. The encoder magnet has a length D. An encoder sensor in one path module is separated from its nearest counterpart in an adjacent path module by no more than the distance D. In the preferred embodiment, each path module has three encoder sensors spaced D/2 apart, and the outer ones of the three encoder sensors are spaced D/4 from their mating ends, whereby, when adjacent path modules are assembled, closest encoder sensors in adjacent modules are spaced D/2 apart.

REFERENCES:
patent: 4689530 (1987-08-01), Nakamura et al.
patent: 4789815 (1988-12-01), Kobayashi et al.

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