Adaptive Control Design of Band-Pass Digital Filters by Poleplacement Approach

This research proposes poleplacement approach to achieve adaptive control design of band-pass digital filters. Digital control concept is deployed in the design scheme for practical computer control use. Frequency transformation is current well known skill to transfer low-pass prototype filter into another desired filter. It is a mathematical methodology to have the passband change. Here, poleplacement approach is used to shift poles of the original low-pass prototype filter to the desired poles location so that a new filter which has the desired passband and the desired cut-off frequency can be obtained. This control process provides the filters potentially possessing adaptive performances. The filter responses of frequency transformation and the responses of poleplacement control approach are also compared to show the feasibility of this design. Key words: adaptive, digital, band-pass filter, control design, poleplacement.