Vehicle steering system

An acceleration sensor is attached to a rack housing. A FFT processing unit converts a signal output from the acceleration sensor, which is a time-domain signal, into a frequency-domain signal. An inverse input vibration component extraction unit extracts a signal, of which the frequency (f) falls w...

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Bibliographic Details
Main Author KOUCHI TATSUMA
Format Patent
LanguageEnglish
Published 02.09.2014
Subjects
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MOTOR VEHICLES
PERFORMING OPERATIONS
TRAILERS
TRANSPORTING
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Summary:An acceleration sensor is attached to a rack housing. A FFT processing unit converts a signal output from the acceleration sensor, which is a time-domain signal, into a frequency-domain signal. An inverse input vibration component extraction unit extracts a signal, of which the frequency (f) falls within a predetermined range (fL f fH (fH>fL)) and of which the power density ( ) falls within a predetermined range ( L H ( H> L)), from the frequency-domain signal obtained by the FFT processing unit. An IFFT processing unit converts the frequency-domain signal extracted by the inverse input vibration component extraction unit into a time-domain signal (estimated inverse input vibration).
Bibliography:Application Number: US201213679297