Rotation detection device

Details Rotation detection device Rotation detection device

2008-04-15

2008-04-15

Noori, Max (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

Reexamination Certificate

active

07357041

ABSTRACT:
Torque ripple of a motor due to a rotation detection device is reduced. A periodicity gain multiplier51multiplies the rotation angle θ of a detection target by a ripple periodic number m per rotation of the detection target. An adder53adds a phase adjusting value “ψ” from a phase adjustor49to the value “mθ”. The value “sin(mθ+ψ)”, which is calculated by a sine calculator55, is multiplied by a predetermined gain G by an amplitude adjustor57and by the angular velocity ω of the detection target by a multiplier59. A subtractor61subtracts the output of the multiplier59from the value “ω” and outputs “ω(1−G sin(mθ+ψ))”. The output of the subtractor61and the output “mθ+ψ” of the adder53are input to the phase adjustor49and amplitude adjustor57. The phase adjustor49calculates the phase adjusting value “ψ” based on the summation of the derivative values of the outputs from the subtractor61sampled for each “π/2” of the output from the adder53. The amplitude adjustor57calculates the gain G based on the summation of the differences between averages of the sampled values at “0” and “π” of the output of the adder53and averages of the time integration value at the integral interval of “0” to “π”.

REFERENCES:
patent: 4020685 (1977-05-01), Van Millingen et al.
patent: 4399397 (1983-08-01), Kleinschmidt, Jr.
patent: 4899596 (1990-02-01), Janik et al.
patent: 7054783 (2006-05-01), Morishita
patent: 7-129251 (1995-05-01), None
patent: 9-113528 (1997-05-01), None
patent: 10-281809 (1998-10-01), None
patent: 11-299277 (1999-10-01), None
patent: 2002-199501 (2002-07-01), None
patent: 2003-083769 (2003-03-01), None

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