Resolver malfunction diagnostic circuit

Details Resolver malfunction diagnostic circuit Resolver malfunction diagnostic circuit

2005-10-25

2005-10-25

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

Reexamination Certificate

active

06958620

ABSTRACT:
An objective is to perform malfunction diagnosis such as a wire breakage of resolver windings using a simple circuit configuration, realize the cost down and reliability improvement for resolver malfunction diagnostic circuits, and reduce electric-power consumption in the resolver malfunction diagnostic circuits. A resolver malfunction diagnostic circuit includes a resolver-signal inputting circuit for, in response to rotation of a rotor, receiving signals from a resolver that outputs from its output winding rotational-angle signals corresponding to the rotor rotational angle, and the output winding is determined to be out of order when the amplitude of the output from the output winding is equal to or lower than a predetermined value, and a deviation between the center voltage of its output voltage and the center voltage in the normal operating state exceeds an allowable level.

REFERENCES:
patent: 6577957 (2003-06-01), Fujimoto et al.
patent: 11-14691 (1999-01-01), None
patent: 2000-131096 (2000-05-01), None

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