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Powertrain control based on bearing speed

  • US 9,644,735 B2
  • Filed: 11/24/2014
  • Issued: 05/09/2017
  • Est. Priority Date: 11/24/2014
  • Status: Expired due to Fees
First Claim
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1. A vehicle comprising:

  • a housing;

    a shaft;

    a bearing having a plurality of rolling elements separating the shaft from the housing and configured to transmit radial forces from the shaft to the housing and to translate circumferentially as the shaft rotates to facilitate low friction rotation of the shaft with respect to the housing;

    a sensor mounted on the housing and configured to transmit a signal that varies in response to translation of a rolling element of the plurality of rolling elements;

    a clutch or brake; and

    a controller programmed tobased on the signal from the sensor, calculate an estimated speed of the shaft; and

    adjust a torque capacity of the clutch or brake based on the estimated speed.

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