Low cost resolver system

Details Low cost resolver system Low cost resolver system

1998-06-09

2000-07-04

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318254, 318439, 318661, H02P 616

Patent

active

060843764

ABSTRACT:
A resolver (10) is excited with a high frequency signal from excitation circuit (16). Outputs of the resolver (10) are transmitted through receiver circuit (24) and input to a DSP signal processing circuit (18), which demodulates the sine and cosine outputs to provide samples of the sine and cosine of the rotor position. The sample values are converted to digital values, which are used to calculate a shaft angular position, which is then used for closed loop position and velocity control of a brushless PM motor (14).

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