VIBRATION REDUCTION CONTROL METHOD AND APPARATUS OF POWER TRAIN BY CONTROLLING MOTOR TORQUE OF ELECTRIC VEHICLE
First Claim
1. A vibration reduction apparatus of a power train for controlling a motor torque of a vehicle, comprising:
- a processor configured to;
generate a generation of vibrations in the power train as the vehicle passes on protruded portions of a road surface; and
calculate a compensation torque for a vibration reduction of the power train when vibrations occur in the power train as the vehicle passes on protruded portions of the road surface.
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Accused Products
Abstract
The present invention relates to a vibration control method and apparatus of a power train in a vehicle for reducing the vibrations in a power train when driving on a protruded portion of a road surface using a motor torque control. The apparatus comprises a processor configured to determine the generation of vibrations in a power train as the vehicle passes on the protruded portions of the road surface; and calculate a compensation torque for a vibration reduction of the power train when vibrations occur in the power train as the vehicle passes on the protruded portions of the road surface.
28 Citations
18 Claims
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1. A vibration reduction apparatus of a power train for controlling a motor torque of a vehicle, comprising:
a processor configured to; generate a generation of vibrations in the power train as the vehicle passes on protruded portions of a road surface; and calculate a compensation torque for a vibration reduction of the power train when vibrations occur in the power train as the vehicle passes on protruded portions of the road surface. - View Dependent Claims (2, 3, 4)
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5. A vibration reduction method of a power train for controlling a motor torque of a vehicle, comprising:
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receiving, by a processor, an acceleration signal of the vehicle from a vehicle body acceleration sensor by a band-pass filter, wherein only a certain frequency band is passed therethrough by the band-pass filter; measuring, by the processor, a size of an acceleration signal component of a frequency band passed through the band-pass filter and determining an occurrence of vibrations in the power train when a change ratio per hour of the size of the acceleration signal component exceeds a threshold value; calculating, by the processor, a compensation motor torque for reducing the vibrations of the power train when the vibrations occur in the power train as the vehicle passes on protruded portions of a road surface; and applying, by the processor, the calculated compensation motor torque to the power train to compensate the vibrations in the power train. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
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program instructions receiving an acceleration signal of the vehicle from a vehicle body acceleration sensor by a band-pass filter, wherein only a certain frequency band is passed therethrough by the band-pass filter; program instructions measuring a size of an acceleration signal component of a frequency band passed through the band-pass filter and determining an occurrence of vibrations in the power train when a change ratio per hour of the size of the acceleration signal component exceeds a threshold value; program instructions calculating a compensation motor torque for reducing the vibrations of the power train when the vibrations occur in the power train as the vehicle passes on protruded portions of a road surface; and program instructions applying the calculated compensation motor torque to the power train to compensate the vibrations of the power train. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification