Method and apparatus for balancing a wheel of a vehicle or the like
First Claim
1. Method for analyzing a wheel of a vehicle with a balancing machine comprising a shaft on which a wheel being mounted thereon is rotatable, electrical sensors being coupled to the shaft and issuing sensor output signals when forces are applied to the wheel, and a computer calculating and issuing balancing values form the sensor output values in connection with specific wheel data being peculiar to the wheel to be balanced, said method including the steps ofvibrating the wheel while it is at rest, andcalculating specific wheel data from the sensor output signals which are issued by the sensors on vibration of the wheel.
4 Assignments
0 Petitions
Accused Products
Abstract
A balancing apparatus comprises a shaft on which a wheel may be mounted drivably for rotation. Electrical sensors are coupled to the shaft and issue sensor output signals when forces are acting on the wheel. A computer calculates the unbalance data from the sensor output signals in combination with specific wheel data and displays the result. The wheel at rest is made vibrate and the specific wheel data are calculated from the sensor output signals issued by the sensors on vibration of the wheel, the sensor output signals being compared to sample signals being specific for each particular type of wheel and having been stored together with the specific wheel data. In case of identity of the sensor output signals with the sample signals the specific wheel data are made available for calculating the unbalance data. The sensor output signals issued when the wheel is driven, are transformed into an unbalance frequency spectrum and the unbalance data are calculated from the unbalance frequency spectrum.
17 Citations
23 Claims
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1. Method for analyzing a wheel of a vehicle with a balancing machine comprising a shaft on which a wheel being mounted thereon is rotatable, electrical sensors being coupled to the shaft and issuing sensor output signals when forces are applied to the wheel, and a computer calculating and issuing balancing values form the sensor output values in connection with specific wheel data being peculiar to the wheel to be balanced, said method including the steps of
vibrating the wheel while it is at rest, and calculating specific wheel data from the sensor output signals which are issued by the sensors on vibration of the wheel.
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10. Method for analyzing a wheel of a vehicle with a balancing machine comprising a shaft on which a wheel being mounted thereon is rotatable, electrical sensors being coupled to the shaft and issuing sensor output signals when forces are applied to the wheel, and a computer calculating and issuing unbalance values from the sensor output values in connection with specific wheel data being peculiar for the wheel to be balanced, wherein
the sensor output signals in case of a driven wheel are transformed into an unbalance frequency spectrum, and the unbalance values are calculated from the unbalance frequency spectrum.
- 13. Balancing machine comprising a shaft on which the wheel being mounted thereon is rotatable, electrical sensors being coupled to the shaft and issuing sensor output signals when forces are applied to the wheel, and a computer calculating and issuing unbalance values from the sensor output values in connection with specific wheel data being peculiar for the wheel to be balanced, said computer comprising calculation units calculating the specific wheel data from the sensor output signals which are produced by vibrating a wheel which is at rest.
- 20. Balancing machine comprising a shaft on which a wheel being mounted thereon is rotatably rotatable, electrical sensors being coupled to the shaft and issuing sensor output signals when forces are applied to the wheel, and a computer calculating and issuing unbalance values from the sensor output values in connection with specific wheel data being peculiar for the wheel to be balanced, said computer comprising a transformation calculation unit transforming the sensor output signals produced in case of a driven wheel into an unbalance frequency spectrum and calculation units, calculating the balancing values from the unbalance frequency spectrum in connection with the specific wheel data.
Specification