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US 11,881,806 B2Granted
Resolver converter and motor control device
AssigneeRenesas Electronics Corporation
InventorTakashi Umamichi
Life of this patent
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Abstract
A resolver converter includes a tracking loop circuit that calculates an angle θ from a resolver output signal, a control and diagnosis circuit that controls the tracking loop circuit and diagnoses based on the resolver output signal, wherein the control and diagnosis circuit, by operating the tracking loop circuit as a direct digital synthesizer (DDS), synchronously detects a noise signal superimposed on the resolver output signal.
Claims13
A resolver converter comprising:
- a tracking loop circuit that calculates an angle θ from a resolver output signal;
- and
- a control and diagnosis circuit that controls the tracking loop circuit and diagnoses based on the resolver output signal,
- wherein the control and diagnosis circuit, by operating the tracking loop circuit as a direct digital synthesizer (DDS), synchronously detects a noise signal superimposed on the resolver output signal.
1 more element
A motor control device comprising:
- a resolver that outputs an output signal in accordance with a rotation angle θ of a motor;
- and
- a resolver converter that receives the output signal of the resolver,
- wherein the resolver converter comprising:
- a tracking loop circuit that calculates the rotation angle θ from the output signal of the resolver;
- and
- a control and diagnosis circuit that controls the tracking loop circuit and diagnoses based on the output signal of the resolver,
- wherein the control and diagnosis circuit, by operating the tracking loop circuit as a direct digital synthesizer (DDS), synchronously detects a noise signal superimposed on the output signal of the resolver.
5 more elements
Dependencies are inferred from the claim text.