Imperial College London


Faculty of MedicineInstitute of Global Health Innovation

Visiting Professor



+44 (0)7554 342 293robert.istepanian Website




Central FacultyFaculty BuildingSouth Kensington Campus






BibTex format

author = {Whidborne, JF and Istepanian, RSH},
doi = {10.1049/ip-cta:20010604},
pages = {377--382},
title = {Genetic algorithm approach to designing finite-precision controller structures},
url = {},
year = {2001}

RIS format (EndNote, RefMan)

AB - The parameters of a digital control design usually need to be rounded when the controller is implemented with finite precision arithmetic. This often results in degradation of the closed loop performance and reduced stability margins. This paper presents a multi-objective genetic algorithm based approach to designing the structure of a finite-precision second-order state space controller implementation, which can simultaneously minimise some set of performance degradation indices and implementation cost indices. The approach provides a set of solutions that are near Pareto-optimal, and so allows the designer to trade-off performance degradation against implementation cost. The method is illustrated by the design of the structure of a PID controller for the IFAC93 benchmark problem.
AU - Whidborne,JF
AU - Istepanian,RSH
DO - 10.1049/ip-cta:20010604
EP - 382
PY - 2001///
SN - 1350-2379
SP - 377
TI - Genetic algorithm approach to designing finite-precision controller structures
UR -
ER -