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US 12,613,110 B2Granted
Systems and methods for motor position sensing
AssigneeAptiv Technologies AG
InventorsJanusz Debski, Wojciech Typrowicz, Krysztof Tokarz
Life of this patent
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Abstract
A system includes a controller, a magnetic field sensor, and a signal conditioning circuit. The magnetic field sensor is configured to sense a position of a motor and provide an output signal. The signal conditioning circuit is configured to produce an AC-coupled output signal from the output signal. The AC-coupled output signal is an input to the controller. The controller is configured to process the AC-coupled output signal.
Claims11
A system comprising:
- a controller;
- a magnetic field sensor configured to sense a position of a motor and provide an output signal;
- and
- a signal conditioning circuit including a high-pass filter, wherein:
- the signal conditioning circuit is configured to produce an AC-coupled output signal from the output signal,
- the AC-coupled output signal is an input to the controller,
- the signal conditioning circuit includes a first diode configured to limit voltages in the AC-coupled output signal to a lower limit, and a second diode configured to limit voltages in AC-coupled output signal to an upper limit, and
- the controller is configured to process the AC-coupled output signal by counting a number of pulses in the AC-coupled output signal to determine a position of the motor.
5 more elements
A vehicle comprising:
- a motor;
- a controller;
- a magnetic field sensor configured to sense a position of the motor and provide an output signal;
- and
- a signal conditioning circuit including a high-pass filter, wherein:
- the signal conditioning circuit is configured to produce an AC-coupled output signal from the output signal,
- the AC-coupled output signal is an input to the controller,
- the signal conditioning circuit includes a first diode configured to limit voltages in the AC-coupled output signal to a lower limit, and a second diode configured to limit voltages in AC-coupled output signal to an upper limit, and
- the controller is configured to process the AC-coupled output signal by counting a number of pulses in the AC-coupled output signal to determine a position of the motor.
6 more elements
A method comprising:
- configuring a magnetic field sensor to sense a position of a motor and provide an output signal;
- conditioning the output signal by a signal conditioning circuit including a high-pass filter, wherein the signal conditioning circuit is configured to produce an AC-coupled output signal, and wherein the AC-coupled output signal is input to a controller;
- and
- processing, by the controller, the AC-coupled output signal by counting a number of pulses in the AC-coupled output signal to determine a position of the motor, wherein the signal conditioning circuit includes a first diode configured to limit voltages in the AC-coupled output signal to a lower limit, and a second diode configured to limit voltages in AC-coupled output signal to an upper limit.
1 more element
Dependencies are inferred from the claim text.