Open-loop control method for cancelling engine induced noise...

Details Open-loop control method for cancelling engine induced noise... Open-loop control method for cancelling engine induced noise...

2011-03-01

2011-03-01

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C073S117030

Reexamination Certificate

active

07899607

ABSTRACT:
An open-loop control system that provides control signals to active engine mounts to reduce or eliminate the transfer of engine vibration to a vehicle body structure, where the system uses only a crank signal from the engine as an input. The control system includes an instant crank speed variation sensing processor that receives the crank signal from the engine, where the crank signal is a pulsed signal including missing pulses as a result of teeth missing on the vehicle crank wheel. The crank speed variation sensing processor provides a measurement of the instant crank speed variation of the crank signal and minimizes an error in the measurement as a result of the missing pulses. The crank speed variation sensing processor outputs a crank speed sensing variation signal as a sine wave that identifies order content in the crank pulse signal.

REFERENCES:
patent: 5186136 (1993-02-01), Kadomukai et al.
patent: 7000578 (2006-02-01), Eiraku
patent: 7350405 (2008-04-01), Sheikh et al.
patent: 64-066450 (1989-03-01), None
patent: 06-081708 (1994-03-01), None
patent: 2000-205029 (2000-07-01), None

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