Fractional Delay Approximation Based Design of Low-order Digital Differentiator
Om Prakash Goswami, Dharmendra Kumar Upadhyay, Tarun Kumar Rawat · 2020
In this paper, two designs of first-order digital differentiators are investigated. In the first design, hybrid filter approximation is used to approximate the fractional delay-based differentiator. The second design involves the direct optimization of the first-order FIR Lagrange filter approximation. Both first-order designs are compared with the existing first-order designs in terms of absolute magnitude error to demonstrate their effectiveness.