Criterion for the elimination of overflow oscillations in fixed-point digital filters with saturation arithmetic and external disturbance
In this paper, a new criterion for the H ? elimination of overflow oscillations in fixed-point digital filters with saturation arithmetic and external disturbance is presented. The criterion not only guarantees exponential stability but also reduces the effect of external disturbance to an H ? norm constraint. The criterion takes the form of linear matrix inequality (LMI) and, hence, is computationally tractable. An illustrative example is given to demonstrate the effectiveness of the proposed criterion.
digital filters exponential stability linear matrix inequality (lmi) h ? approach h ? h ? h ? finite wordlength effects