Method for determining the rotational velocity of an axle...

Details Method for determining the rotational velocity of an axle... Method for determining the rotational velocity of an axle...

2011-03-29

2011-03-29

Tran, Khoi (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Railway vehicle

C701S082000, C318S139000, C318S609000, C303S151000, C073S118040

Reexamination Certificate

active

07917257

ABSTRACT:
A method for detecting a rotational velocity of a traction motor in a vehicle comprising: obtaining a traction motor signal having at least one phase, wherein the traction motor signal is responsive to an operating condition of the traction motor in an electrically unexcited state. The method also includes processing the traction motor signal to create an indication result based on a frequency of the traction motor signal and determining rotational velocity of the traction motor based on the indication result.

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R.C.Becerra; T.M jahns; M.Ehasani; Four Quadrant Sensorless Brushless ECM Driver; CH2992-6/91/0000-0202; IEEE.
Three Phase I.
Three Phase II.

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