Miniature probe positioning actuator

Details Miniature probe positioning actuator Miniature probe positioning actuator

1995-05-26

1998-09-08

Nguyen, Vinh P.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324754, 335266, G01R 106

Patent

active

058049827

ABSTRACT:
Disclosed is a Mini Probe Positioning Actuator which is low in cost and mass, capable of high accelerations, relatively long stroke and compact packaging. The probe positioning actuator is composed of a pair of substantially parallel cantilevered beams, each beam being comprised of flexible, signal carrying cable formed of a polyimide composition which allows for the probe tip to be suspended from and form part of the armature of the actuator. The armature also includes a pair of oppositely wound coils intermediate the beams, which coils coact electromagnetically with a pair of spaced apart but fixedly positioned (relative to the coils/armature) magnets forming a motor for effecting armature and thus probe tip movement. The light mass of the coils and armature and the dual functional purpose of the suspension beams serves to make the probe actuator highly accurate and sensitive while allowing for reliable operation.

REFERENCES:
patent: 3446065 (1969-05-01), Wiesler et al.
patent: 3970980 (1976-07-01), Nelson
patent: 4001685 (1977-01-01), Roch
patent: 4034293 (1977-07-01), Roch
patent: 4123706 (1978-10-01), Roch
patent: 4267507 (1981-05-01), Guerpont
patent: 5041806 (1991-08-01), Enderle et al.
patent: 5153472 (1992-10-01), Karadis et al.
patent: 5373730 (1994-12-01), Kovacevic
IBM TDM Feb. 1984 No. 9, pp. 4457-4462: "Robot Position and Orientation Sensor".

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