Dual resolver device

Details Dual resolver device Dual resolver device

2005-08-30

2005-08-30

Noori, Max (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

Reexamination Certificate

active

06935194

ABSTRACT:
A dual resolver device that includes a first resolver having a first rotary shaft, and a second resolver having a second rotary shaft, wherein the absolute value of a difference between a shaft angle multiple of the first resolver and a shaft angle multiple of the second resolver is 1. In one embodiment, the dual resolver device further includes a torsion bar connecting the first and second rotary shafts. In another embodiment, the first and second rotary shafts constitute different portions of the same rotary shaft. In either embodiment, the first resolver preferably produces an output indicative of a rotation angle of the first rotary shaft, and the second resolver preferably produces an output indicative of a rotation angle of the second rotary shaft. The dual resolver device preferably further includes a processor that determines an absolute shaft rotation angle in response to the first and second outputs, and the shaft angle multiples of the first and second resolvers. Most preferably, the processor has the capability of determining both the absolute and relative shaft rotation angles in response to the first and second outputs, and the shaft angle multiples of the first and second resolvers.

REFERENCES:
patent: 4672347 (1987-06-01), Garcia et al.
patent: 4954763 (1990-09-01), Kumar et al.
patent: 5644224 (1997-07-01), Howard
patent: 6331759 (2001-12-01), Atmur
patent: 6369686 (2002-04-01), Pielok
patent: 6554303 (2003-04-01), Benz et al.

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