Electricity: measuring and testing – Magnetic – Displacement
Patent
1983-05-23
1987-01-27
Karlsen, Ernest F.
Electricity: measuring and testing
Magnetic
Displacement
34087033, G01B 714, G08C 1906
Patent
active
046396675
ABSTRACT:
A multi-directional contactless controller senses the displacement of a manipulator with respect to a reference frame along two orthogonal directions and also indicates rotation of the manipulator with respect to the reference frame. The manipulator is journaled to a carrier and means are provided for preventing rotation of the carrier with respect to the reference frame. A rotary-type sensor indicates the rotation of the manipulator with respect to the carrier. Contactless linear sensors indicate the displacement of the carrier with respect to the reference frame. In one preferred embodiment, the carrier is planar and carries a square flat magnet which differentially saturates two pairs of saturable cores secured to the reference frame. In a second embodiment, the carrier is cylindrical and telescopes within a cylindrical frame. In a third embodiment, the carrier is spherical and is received in a ball-and-socket type joint fashioned in the reference frame. A contactless controller is also disclosed having the polarity of the indication for a first direction of control selected by a second direction of control, the first direction of control providing a linear response and the second direction of control providing a nonlinear response.
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Karlsen Ernest F.
Snow Walter E.
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