Plate brake tester apparatus and method

Details Plate brake tester apparatus and method Plate brake tester apparatus and method

1990-06-05

1992-01-28

Raevis, Robert

Measuring and testing

Brake testing

Slidable platform

G01L 528

Patent

active

050834568

ABSTRACT:
The brakes of a two-axle vehicle are tested by weighing the vehicle and measuring the braking forces for both axles to determine the actual ratio of front axle braking force to total braking force. The deceleration applied to the vehicle is determined from the weight of the vehicle and the applied braking forces. A nominal preferred value of the ratio of front axle braking force to total braking force is calculated from the determined deceleration and the measured weight of the vehicle. The nominal preferred value varies from test to test with both the actual deceleration and the vehicle weight. For each test, upper and lower limits for the acceptability of the actual ratio of front axle braking force to total braking force are set based upon the computed nominal preferred value. These limits move from test to test with the computed nonimal preferred value. The nominal preferred value, the movable limits, and the actual ratio are displayed to the user on a CRT screen. The actual ratio is displayed in the form of a bar on the screen, with the limits and nominal preferred value displayed as non-numeric indicia along the longitudinal axis of the bar.

REFERENCES:
patent: 4011751 (1977-03-01), Weiss et al.

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