Boots – shoes – and leggings
Patent
1994-02-01
1996-08-06
Cosimano, Edward R.
Boots, shoes, and leggings
364463, 364572, 381 71, G01H 1700
Patent
active
055440800
ABSTRACT:
A sine wave signal generated in synchronism with a pulse signal determining a frequency of vibrations and noises generated by a vibration
oise source is input to a W filter and a C filter. The C filter selects filter coefficients dependent on the rotational speed of an engine, and generates a transfer characteristic-dependent reference signal R dependent on a transfer characteristic of a vibration
oise-transmitting path, based on the filter coefficients. Alternatively, a divisional signal is prepared by dividing a repetition period of vibrations and noises by a predetermined number, and values of a sine wave generated in synchronism with occurrence of said divisional signal is delivered to a W filter, while the transfer characteristic-dependent reference signal is delivered from the C filter storing data of the transfer characteristic identified in advance to the W filter. Alternatively, a sine wave signal and a delayed sine wave signal delayed by a quarter of a repetition period of the sine wave relative to the sine wave, as well as phase and amplitude-related information of the transfer characteristic of the path are generated and delivered in synchronism with generation of the divisional signal. These sine wave signals and the transfer characteristic-dependent reference signal (phase and amplitude-related information) are used to actively control the vibrations and noises.
REFERENCES:
patent: 5146505 (1992-09-01), Pfaff et al.
patent: 5245552 (1993-09-01), Andersson et al.
Alain Roure; "Fast Algorithms in Active Noise or Vibration Control"; IEEE, ICASSP '88: Acoustics, Speech & Signal Proc. Cont. pp. 2582-2585.
Kobayashi Toshi-aki
Ozawa Hidetaka
Cosimano Edward R.
Honda Giken Kogyo Kabushiki Kaisha
Shah Kamini S.
LandOfFree
Vibration/noise control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vibration/noise control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibration/noise control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2196754