Real-time reporting and estimating of mass of vehicles using drive characteristics

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United States of America Patent

PATENT NO 11754434
SERIAL NO

16192147

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A vehicle includes a vehicle mass estimator circuit. The vehicle mass estimator circuit is configurable to estimate a mass of vehicle during real-time operation of the vehicle without employing a scale or dedicated mass sensing system. The vehicle mass estimator circuit generates the vehicle mass Mv from: (1) an estimated torque or sensed torque, (2) an estimated motor angular velocity or sensed motor angular velocity, and (3) sensed acceleration or without any sensed acceleration. In one embodiment, the vehicle mass estimator circuit senses motor current during vehicle operation and estimates a mass of the vehicle using the motor current without any dedicated acceleration sensor such as an accelerometer. A motor angular velocity is estimated from the motor current. In another embodiment, the vehicle mass estimator circuit senses motor current during vehicle operation and estimates a mass of the vehicle using the motor current and acceleration information provided by an accelerometer.

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Patent Owner(s)

  • MOTIV POWER SYSTEMS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Castelaz, James Michael Alameda, US 14 28
Hwang, Tai-Sik Foster City, US 6 75
Stein, Elias San Francisco, US 4 5
Tomlin, Justin San Francisco, US 3 3

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