Resolver signal processing device

Details Resolver signal processing device Resolver signal processing device

2008-03-04

2008-03-04

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Orientation or position

C340S672000

Reexamination Certificate

active

07340370

ABSTRACT:
A resolver signal processing device includes a control portion, a resolver, and an input/output portion. The control portion includes a memory for storing sine wave data for two cycles, and a DMA controller for transmitting to the resolver the excitation signal including a sine wave. A calculation portion provided in the control portion commands, in initial setting, DMA transfer of the sine wave data for one cycle from a reference phase as the excitation signal, and commands, in detecting the rotational angle, DMA transfer of the sine wave data for one cycle from a modified phase as the excitation signal. The modified phase is determined, in the initial setting, based on the phase difference between the excitation signal and a sine wave output signal or a cosine wave output signal, and the rotational angle of the resolver.

REFERENCES:
patent: 6389373 (2002-05-01), Ohya
patent: 2004/0233079 (2004-11-01), Takehara
patent: 3368837 (2002-11-01), None

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