Apparatus and method for imposing a desired average radial force

Details Apparatus and method for imposing a desired average radial force Apparatus and method for imposing a desired average radial force

1986-08-19

1987-11-10

Woodiel, Donald O.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

G01M 1702

Patent

active

047049006

ABSTRACT:
An apparatus and method for imposing a desired average radial load force on a tire by calculating the current average force between the tire and a loadwheel based on the average radial force and radial distance between the tire and a loadwheel over the last previous complete revolution of the tire, the spring constant of the tire and the current radial distance between the tire and the loadwheel. The calculated average force value is applied as a feedback signal to the loadwheel position controller in order to achieve the desired average radial load. The spring constant of the tire may be determined from the change in force per unit distance as the tire is loaded or programmed as a constant to be applied for testing all tires of a given type.

REFERENCES:
patent: 4078339 (1978-03-01), Ongaro
patent: 4404848 (1983-09-01), Iwama et al.
patent: 4404849 (1983-09-01), Iwama et al.

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