Criterion for the H∞ Suppression of Overflow Oscillations in Fixed Point Digital Filters Employing Saturation Nonlinearities and External Interference

Abstract

This paper proposes a novel criterion for suppressing the [Formula: see text] overflow oscillations in fixed point state-space digital filters employing saturation nonlinearities and external interference. The proposed criterion can be used to ensure the exponential stability (ES) and diminish the external interference effects to an [Formula: see text] norm constraint. An example is given to exemplify the utility of the obtained results.