METHOD AND SYSTEM FOR DETECTING A VIBRATION LEVEL OF A WHEEL WITHIN A RESONATING FREQUENCY RANGE OF A VEHICLE SUSPENSION
First Claim
1. A method of detecting a vibration level of a wheel within a resonating frequency range of a vehicle suspension comprising:
- determining velocities of the wheel relative to a sprung mass of said vehicle;
recording velocities over a selected time period;
providing at least one periodic algorithm;
determining an output value by utilizing the at least one periodic algorithm and the recorded velocities over the selected time period; and
determining whether the vibration level of the wheel is within the resonating frequency range by utilizing the output value.
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Accused Products
Abstract
A method that detects whether the vibration level of the wheel is within the resonating frequency range by utilizing discrete velocity measurements. The method includes continuously measuring velocity levels of a wheel relative to a sprung mass vehicle component. These measurements are continuously recorded over a period of time. A periodic algorithm is provided, and the periodic algorithm and the velocity measurements are utilized to determine an output value. The output value is utilized to determine whether the vibration level of the wheel is within the resonating frequency range.
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Citations
20 Claims
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1. A method of detecting a vibration level of a wheel within a resonating frequency range of a vehicle suspension comprising:
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determining velocities of the wheel relative to a sprung mass of said vehicle; recording velocities over a selected time period; providing at least one periodic algorithm; determining an output value by utilizing the at least one periodic algorithm and the recorded velocities over the selected time period; and determining whether the vibration level of the wheel is within the resonating frequency range by utilizing the output value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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9. The method 8, further comprising:
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determining whether the output value is above a predetermined threshold value indicative of a vibration level within the resonating frequency range; and selectively implementing a resonant damping control strategy when the output value is above the threshold value.
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19. A method of detecting a vibration level of a wheel within a resonating frequency range of a vehicle suspension comprising:
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monitoring a velocity level of the wheel relative to a sprung vehicle component; recording the monitored velocity levels over a selected time period at least as long as two times a maximum wave period of the resonating frequency range; providing a Fourier series algorithm; determining a value for each of two Fourier series coefficients by utilizing the Fourier series algorithm, the recorded monitored velocities, and a selected frequency level; and utilizing the values of the two Fourier series coefficients to detect whether the vibration level of the wheel is within the resonating frequency range.
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20. A system of detecting a vibration level of a vehicle within a resonating frequency range of a vehicle suspension comprising:
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a sensor configured to provide a signal indicative of position of a wheel relative to a sprung vehicle component; a controller configured to receive the signals indicative of position of the wheel, utilize the signals to determine a set of velocity measurements, record the set of velocity measurements over a selected time period, and detect whether the vibration level of the wheel is within the resonating frequency range based on the recorded set of velocity measurements.
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Specification