Sensor having mutually perpendicular sections using zigzag coils

Details Sensor having mutually perpendicular sections using zigzag coils Sensor having mutually perpendicular sections using zigzag coils

1992-12-30

1995-01-10

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

73745, 32420724, 324162, 324173, 336129, 34087032, G01B 714, G01P 350, G01L 910, H01F 2104

Patent

active

053810910

ABSTRACT:
A sensor having a wide sensing range is capable of being controll by a small scale processor. The sensor comprises: a plurality of planar zigzag coils being provided on substrates, the planar zigzag coils having the same coil pitch and being formed into zigzag shape in a first direction, the planar zigzag coils being capable of relative movement in the first direction, the planar zigzag coils including a first planar zigzag coil, which is a primary coil, and a second planar zigzag coil, which is a secondary coil; a magnetizing unit for magnetizing the first planar zigzag coil; a first detecting unit for detecting induced electromotive force, which is induced in the second planar zigzag coil by the first magnetized planar zigzag coil; and a second detecting unit for detecting displacement length between the first planar zigzag coil and the second planar zigzag coil on the basis of the induced electromotive force in the second planar zigzag coil. Therefore, the sensor is capable of having a wide sensing range in which the first planar zigzag coil induces the second planar zigzag coil.

REFERENCES:
patent: 3090934 (1963-05-01), Farrand
patent: 3202948 (1965-08-01), Farrand
patent: 3473098 (1969-10-01), Waller
patent: 4604575 (1986-08-01), Shimizu et al.
patent: 4879672 (1989-11-01), Pombrio, Jr.
patent: 5046702 (1991-09-01), Miyazawa et al.
"Inductosyn Precision linear and rotary position transducers" Farrand Controls Brochure and Catalogue May 28, 1987.
Kiyohito Yamasawa et al., Ieee Transactions on Magnetics, vol. 26, No. 3, May 1990.

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