Measuring and testing – Dynamometers – Responsive to torque
Patent
1992-09-23
1994-04-12
Chilcot, Jr., Richard E.
Measuring and testing
Dynamometers
Responsive to torque
73862325, 324209, G01L 302
Patent
active
053015592
ABSTRACT:
A torque detecting system for detecting the torque acting on a rotational member has first and second magnetic heads provided spaced from each other in the axial direction of the rotational member, and a third magnetic head provided spaced from the first magnetic head by a predetermined angle .theta.o in a circumferential direction of the rotational member. First and second magnetic layers are provided on the peripheral of the rotational member and position signals are recorded on the respective magnetic layers through the first and second magnetic heads while the rotational member is rotating under no load. The position signals recorded on the magnetic layers are reproduced through the first to third magnetic heads while the rotational member is rotating under load. The phase difference .DELTA.t between the position signals reproduced by the first and second magnetic heads is detected and at the same time the time difference t between the position signals reproduced by the first and third magnetic heads is detected. The angle of torsion .theta. of the rotational member and the torque T thereon are calculated by use of the time difference t and the phase difference .DELTA.t.
REFERENCES:
patent: 4572005 (1986-02-01), Kita
patent: 4979398 (1990-12-01), Goodzey et al.
patent: 5001937 (1991-03-01), Bechtel et al.
Nakamura Hiroyuki
Okazaki Toshimi
Tsuji Yorikazu
Chilcot Jr. Richard E.
Dougherty Elizabeth L.
Mazda Motor Corporation
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