System and method for haptic calibration
AssigneeTesla, Inc.
InventorsMichael Kessler, Blane Frye, Tyler Sawatzky
Life of this patent
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Abstract
A switchpack for a vehicle is provided that includes a haptic motor configured to provide haptic feedback to a user in a first mode of operation and provide haptic feedback to at least one sensor in a second mode of operation. The switchpack includes at least one sensor adapted to generate electric signals in response to force applied on the at least one sensor by the user during the first mode of operation. The at least one sensor is further configured to sense the haptic feedback provided by the haptic motor during the second mode of operation.
Claims20
A steering wheel assembly comprising:
- a steering rim;
- a switchpack connected to the steering rim, the switchpack comprising:
- a haptic motor;
- at least one sensor to generate electric signals based on a force applied by a user during a first mode of operation, and to sense haptic feedback provided by the haptic motor during a second mode of operation;
- a processor-based controller connected to the at least one sensor and the haptic motor that performs operations that include:
- commanding the haptic motor to emit test signals during the second mode of operation starting at a first frequency and decreasing in incremental steps to a lower threshold frequency:
- determining a resonance frequency based on the test signals from the second mode of operation;
- and
- adjusting the haptic feedback provided by the haptic motor during the first mode of operation based on the resonance frequency.
A method for calibrating a switchpack, comprising:
- generating, by at least one sensor, an electric signal in response to a force applied to the switchpack during a first mode of operation;
- providing haptic feedback to the user via a haptic motor based on the force applied during the first mode of operation;
- commanding the haptic motor to emit test signals during a second mode of operation starting at a first frequency and deceasing in incremental steps to a lower threshold frequency:
- determining a resonance frequency based on the test signals sensed by the at least one sensor during the second mode of operation;
- and
- adjusting the haptic feedback provided by the haptic motor based on the resonance frequency.
A method of calibrating a steering wheel of a vehicle, comprising:
- generating, by at least one sensor, an electric signal in response to a force applied to the switchpack during a first mode of operation;
- providing haptic feedback to the user via a haptic motor based on the force applied during the first mode of operation;
- commanding the haptic motor to emit test signals during a second mode of operation starting at a first frequency and deceasing in incremental steps to a lower threshold frequency;
- determining a resonance frequency based on the test signals sensed by the at least one sensor during the second mode of operation;
- and
- adjusting the haptic feedback provided by the haptic motor based on the resonance frequency.
Dependencies are inferred from the claim text.