| US 11,754,434 B1 | ||
| Real-time reporting and estimating of mass of vehicles using drive characteristics | ||
| Tai-Sik Hwang, Foster City, CA (US); Justin Tomlin, San Francisco, CA (US); Elias Stein, San Francisco, CA (US); and James Michael Castelaz, Alameda, CA (US) | ||
| Assigned to Motiv Power Systems, Inc., Foster City, CA (US) | ||
| Filed by Motiv Power Systems, Inc., Foster City, CA (US) | ||
| Filed on Nov. 15, 2018, as Appl. No. 16/192,147. | ||
| Claims priority of provisional application 62/586,886, filed on Nov. 15, 2017. | ||
| Int. Cl. G01G 19/08 (2006.01); G07C 5/08 (2006.01); B60W 40/076 (2012.01); G01G 19/02 (2006.01) | ||
| CPC G01G 19/022 (2013.01) [B60W 40/076 (2013.01); G01G 19/08 (2013.01); G07C 5/08 (2013.01)] | 16 Claims |
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1. A method comprising:
(a) sensing motor current during operation of a vehicle, wherein the vehicle has a motor that is mechanically coupled to wheels of the vehicle, and wherein the motor is on the vehicle; (b) estimating a mass of the vehicle using the motor current sensed in (a) ; and (c) estimating around slope using the motor current and vehicle acceleration, wherein the ground slope is estimated while the vehicle is moving, and wherein the ground slope is used in (b) to estimate the mass. |