My research is focused on feedback control theory and its applications. A recurrent theme has been to balance the simplicity and insight of classical control with the power and potential of digital control implementation to address nonlinear control problems. The focus is systems with actuator nonlinearities such as saturation, rate constraints, backlash and hysteresis.

I am interested in multiplier theory within the framework of absolute stability theory. Recent highlights include new frequency domain characterisations of both the continuous-time O'Shea-Zames-Falb multipliers and their discrete-time counterparts. I apply these techniques to model predictive control and antiwindup. 

School of Computer Science and Engineering
Bangor University
Dean Street
Bangor
Gwynedd
LL57 1UT

email: w.heath@bangor.ac.uk