Tire uniformity improvement through improved process harmonic resolution

A system for improving the uniformity of tires, the system comprising:

• a uniformity measurement machine configured to measure a uniformity waveform for each tire in a plurality of tires, the uniformity waveform for each tire comprising a plurality of uniformity measurements of a uniformity parameter for a plurality of measurement points about the tire;
• and
• one or more computing devices coupled to the measurement machine, the one or more computing devices comprising one or more processors and at least one memory, the memory storing computer-readable instructions that when executed by the one or more processors cause the one or more processors to perform operations, the operations comprising:
• obtaining uniformity measurements of a uniformity parameter for each tire in a set of a plurality of tires, the uniformity measurements for each tire being obtained for a plurality of points about the tire, the uniformity measurements containing a process harmonic associated with the candidate process effect;
• aligning, with one or more computing devices, the uniformity measurements for the set of tires based at least in part on an azimuthal location of a maximum magnitude of the process harmonic on each tire in the set of tires to construct a composite process harmonic sampling;
• estimating, with the one or more computing devices, a magnitude of the process harmonic from the composite process harmonic sampling;
• and
• modifying tire manufacture based on the magnitude of the process harmonic;
• wherein the uniformity measurements for each tire are obtained for the plurality of points about the tire at a first sampling resolution over an interval of the process harmonic, the composite process harmonic sampling being associated with a second sampling resolution over an interval of the process harmonic, the second sampling resolution being greater than the first sampling resolution.