Active vibration control system for hybrid vehicle

Details Active vibration control system for hybrid vehicle Active vibration control system for hybrid vehicle

2007-03-09

2009-12-15

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Positional servo systems

With stabilizing features

C701S022000

Reexamination Certificate

active

07633257

ABSTRACT:
In a motor-assisted hybrid vehicle, an active vibration control system suppresses torque fluctuations of an engine without detriment to the response of a static torque. An adaptive notch filter outputs a control signal depending on a harmonic basic signal generated by a basic signal generator from a rotational frequency of a crankshaft. A combiner combines the control signal with a drive signal for the generator motor and supplies the combined signal through a power controller to the generator motor. The basic signal is supplied to corrective filters having the transfer function of the generator motor to output a reference signal. The filter coefficient of an adaptive notch filter is successively updated so that an error signal representative of a rotational speed fluctuation of the crankshaft will be minimized.

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