In this paper we present a novel approach to the design of reference tracking controllers for constrained, discrete-time piecewise affine systems and apply it to a vehicle yaw control problem. The paper is divided in two parts. In the first part, we present a methodology for designing reference tracking controllers for constrained, discrete-time piecewise affine systems. The approach follows th...

This paper proposes a distributed sliding mode control strategy for optimal Load Frequency Control (OLFC) in power networks, where besides frequency regulation also minimization of generation costs is achieved (economic dispatch). We study a nonlinear power network partitioned into control areas, where each area is modelled by an equivalent generator including voltage and second order turbine-g...

Discrete-time, linear control systems with specified pointwise-in-time constraints, such as those imposed by actuator saturation, are considered. The constraints are enforced by the addition of a nonlinear ‘reference governor’ that attenuates, when necessary, the input commands. Because the constraints are satisfied, the control system remains linear and undesirable response effects such as ins...

In a recent Boston Globe op ed article, “Is the ‘Governor Effect’ Real?,” Harvard University economist Edward Glaeser (2011) asks whether elected state officials have the power to influence the trajectory of job growth within their states. Glaeser questions one governor’s claim that he is responsible for the substantial job growth in his state. Using a comparative statistical analysis, he estim...

This paper presents a practical model for load frequency control (LFC) of two-area interconnected power system. The proposed model is a non-linear power system and is framed with thermal generating units including security constraint governor dead band imposed by the governor. A Proportional Integral Derivative (PID) controller is used for the design and analysis of the proposed model. The Part...

It is hypothesised that physical activity is controlled by a central governor in the brain and that the human body functions as a complex system during exercise. Using feed forward control in response to afferent feedback from different physiological systems, the extent of skeletal muscle recruitment is controlled as part of a continuously altering pacing strategy, with the sensation of fatigue...

Power system performance is affected by dynamic characteristics of hydraulic governor-turbines during and following any disturbance, such as occurrence of a fault, loss of a transmission line or a rapid change of load. Accurate modelling of hydraulic governor-turbines is essential to characterise and diagnose the system response during an emergency. In this article, both detailed and simplified...

Low-affinity sites for the activator NRI-P (NtrC-P) that map between the enhancer and the glnAp2 promoter were responsible for limiting promoter activity at high concentrations of NRI approximately P in intact cells and in an in vitro transcription system consisting of purified bacterial components. That is, the low-affinity sites constitute a 'governor', limiting the maximum promoter activity....

While adaptive control has been used in numerous applications, the ability to obtain a predictable transient and steady-state system response is still an open problem for dynamical systems with large system uncertainties and without a priori knowledge of a conservative upper bound on their unknown ideal weights. In order to address this problem, recently a novel command governor architecture wa...

Self-control is considered broadly important for many domains of life. One of its unfortunate features, however, is that it tends to wane over time, with little agreement about why this is the case. Recently, there has been a push to address this problem by looking to the literature in exercise physiology, specifically the work on the central governor model of physical fatigue. Trying to explai...