This paper presents a novel Brain Emotional Learning Based Intelligent Controller (BELBIC) for controlling some of the parameters, such as speed, torque, quadrature and direct axis current and voltage of an Interior Permanent Magnet Synchronous Motor (IPMSM). PI controllers are widely used as speed controllers in industries. IPMSMs are characterized as complex, highly non-linear and time-varyin...

We define model recovery anti-windup for SISO linear control systems with output saturation. We address the problem by relying on a hybrid modification of the linear closed loop which employs a suitable logic variable to activate/deactivate various components of a control scheme. The scheme relies on a finite-time observation law, an open-loop observer and an open-loop input generator which is ...

This paper presents a new system to control secondary cooling water sprays in continuous casting of thin steel slabs, CONONLINE. It uses real-time numerical simulation of heat transfer and solidification within the strand as a software sensor, in place of unreliable temperature measurements. The one-dimensional finite-difference model, CON1D is adapted to create the real-time predictor of the s...

Until not long ago, most fuzzy logic based control applications were limited to the management of user interfaces, sensors and actuators, corresponding to a slow software operation. These techniques are specially appropriated whenever the system model is non-linear and/or difficult to obtain. Is it viable to use fuzzy logic in faster “real time” applications? Is it interesting to use these tech...

This study presents a fuzzy logic direct torque control for induction motor to be used in photovoltaic (PV) water pumping system. The system is intended less expensive and simple while maximizing PV array power utilization. For this purpose, smart technology based on controller (FLC) has been implemented track the maximum which successfully solar systems under different irradiance levels. Next,...

This article presents an antiwindup propor- tional-integral (PI) controller, using a saturating integrator, for single-input and single-output (SISO) stable nonlinear plant, whose steady-state input–output map is increasing. We prove that, under reasonable assumptions, there exists upper bound on the controller gain such that any constant reference input, corresponding equilibrium point of clos...

Zusammenfassung Dieser Beitrag stellt eine neue Entwurfsmethodik für Hippes Regler-Antiwindup, das auch als Beobachtertechnik bezeichnet wird, vor. Die Beobachtertechnik basiert auf einer geeigneten Zerlegung des Reglers. Um eine akzeptable Regelgüte sicherzustellen, wurden bislang alle zulässigen Zerlegungen mittels Simulationen evaluiert. Die neu eingeführte Methode bestimmt mittels konvexer ...

This technical note is devoted to a recently discovered phenomenon that takes place in feedback systems with saturating actuators, proportional-integral (PI) control, and antiwindup. Namely, in such systems, measurement noise induces steady-state error in step tracking, which is incompatible with the standard error coefficients. We quantify this phenomenon using stochastic averaging theory and ...

In this brief, we present and validate an antiwindup (AW) control design suitable to deal with saturated discrete-time linear plants. Following the modern approach AW design, proposed synthesis procedure is based on compensator paradigm in which controller acts top of a baseline one, tuned achieve desirable performance unsaturated regime. After extending existing ideas for continuous-time plant...