Flynn, M. and Ringwood, John (1995) A comparative study of delta- and z-based output feedback pole placement adaptive controllers. In: Proceedings of the Irish DSP and Control Colloquium (IDSPCC '95). Belfast, June 1995, pp. 47-54.

Preview

Download (300kB) | Preview

Abstract

This paper selects a popular z-domain adaptive controller based on output feedback pole placement, utilising recursive least squares for system identification. The adaptive algorithm is recast in the delta-domain with a corresponding reformulation of the identification algorithm. Simulation results, incorporating finite word-length effects, are convincingly used to demonstrate the improvement in the delta formulation, when smaller word-lengths are used. Small word lengths are a feature of most popular industrial controllers. In addition, a pilot-scale rig is used as an application example to demonstrate the effectiveness of the delta controller in real-life implementation. The paper concludes by comparing and contrasting the z- and delta-controllers not only in performance terms but also in terms of design complexity, intuitive appeal and cost benefits.

Item Type:	Book Section
Keywords:	z-domain adaptive controller; algorithm; word length; delta-controller;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	9532
Depositing User:	Professor John Ringwood
Date Deposited:	11 Jun 2018 16:07
Publisher:	Belfast, June 1995
Refereed:	Yes
URI:
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

Repository Staff Only(login required)

Item control page

Downloads

Origin of downloads