Patent ID: 6405146
Filing Date: 2002-06-11
Classification: G01M

Abstract:
A method for cycling each tire being tested on a force variation machine through an adaptive warm-up cycle, comprising the steps of:a) inputting a tire type and preset tolerance values for each parameter of a tire being measured into said force variation machine on which said tire being tested is mounted; b) rotating said tire in a first direction for two successive revolutions; c) calculating data values for each of said parameters being measured during each of said two successive revolutions; d) determining the differences between the calculated data values for each of said parameters being measured during said first two successive revolutions and said preset tolerance values for each of said parameters being measured; e) selecting said data values of each of said parameters being measured during said second revolution for grading said tire, if the difference between data values of each of said corresponding parameters measured during said first two successive revolutions is less than a corresponding one of said preset tolerance values; f) rotating said tire in a second opposite direction on said force variation machine and running said adaptive warm-up cycle again repeating steps c) through e); g) rotating said tire for one or more additional revolutions and again calculating the data values for the measured parameters, if the difference between data values of each corresponding parameter measured during the said first two successive revolutions is greater than said preset tolerance values; h) determining the differences between said calculated data values for each corresponding parameter measured during successive revolutions after said second revolution and said preset tolerance values until the difference between the corresponding data values for the parameters measured during any two successive revolutions is less than said preset tolerance values; and i) repeating steps f)-h).