US 11,740,106 B2 · SINCOS encoder interface

Abstract

In an example, a circuit includes a first comparator, a second comparator, a pulse counter, a processor, a first ADC, and a second ADC. The first comparator has a first input coupled to a first node, a second input, and an output. The second comparator has a first input coupled to a second node, a second input, and an output. A first DAC is coupled to the second input of the first comparator. A second DAC is coupled to the second input of the second comparator. The pulse counter has a first input coupled to the output of the first comparator and a second input coupled to the output of the second comparator. The first ADC has an input coupled to the first node and an output coupled to the processor. The second ADC has an input coupled to the second node and an output coupled to the processor.

Claims20

Dependent claims

A system, comprising:

a rotary shaft;
a motor coupled to the rotary shaft;
a controller coupled to the motor;
an encoder coupled to the motor and to the controller, the encoder comprising:
a first comparator having a first input, a second input, and an output;
a second comparator having a first input, a second input, and an output;
a first digital-to-analog converter (DAC) coupled to the first input of the first comparator;
a second DAC coupled to the first input of the second comparator;
a pulse counter coupled to the output of the first comparator and to the output of the second comparator;
a processor having a first input and a second input;
a first analog-to-digital converter (ADC) coupled to the first input of the processor and to the second input of the first comparator;
and
a second ADC coupled to the second input of the processor and to the second input of the second comparator.

10 more elements

Dependencies are inferred from the claim text.

SINCOS encoder interface

Life of this patent

SINCOS encoder interface

Life of this patent

Abstract

Claims20