Application of multi-resolution wavelet controller in roll eccentricity control

A novel multi-resolution wavelet controller used in roll eccentricity control was presented. The control strategy was based on multi-resolution decomposition of roll force signal by use of wavelets. The roll force from a stand represented the cumulative effect of many underlying phenomena such as process dynamics, roll eccentricity, measured noise, effects of external disturbances etc., which manifest on different scales. The wavelet decomposition, which represented the roll force signal at different scales, was compensated for the roll eccentricity signal and removed other uncertainties in control design. Simulated results were shown to validate the control strategy.