This work focuses on model predictive control of nonlinear singularly perturbed systems. A composite control system using multirate sampling (i.e., fast sampling of the fast state variables and slow sampling of the slow state variables) and consisting of a “fast” feedback controller that stabilizes the fast dynamics and a model predictive controller that stabilizes the slow dynamics and enforce...

In this paper, we integrate nonlinear control and supervisory control theory to design a controller of a heating, ventilating and air conditioning (HVAC) system. First we design the nonlinear controllers by Lyapunov theory and backstepping. Then we create the discrete abstraction of this system and thus derive the discrete event system model from the continuous plant. Finally we design the supe...

This paper analyzes the possibility of using a nonlinear controller to mitigate the current ripple of an inverter system powered by a Polymer Electrolyte Membrane Fuel Cell (PEMFC) stack. Hybrid and fuel cell technologies need to be merged in Hybrid Power Sources (HPS) to assure high performance regarding the PEMFC energy efficiency and PEMFC life cycle. The nonlinear controller is designed bas...

This paper proposes a novel iterative data-driven algorithm (IDDA) for the data-driven tuning of controllers for nonlinear systems. The IDDA uses an experiment-based solving of the optimization problems for nonlinear processes with linear controllers accounting for actuator constraints in terms of a quadratic penalty function approach. A Neural Networkbased identification provides the gradient ...

In this paper we consider the control problem of Dynamic Positioning Systems for Ships (DPSS). It interests as a case which study in nonlinear controller design because the model exhibits nonlinear interaction in three degrees of freedom (surge, sway, and yaw) by means of main propellers aft of the ship. The DPSS system considered in this paper is modeled by a Takagi-Sugeno (T-S) type fuzzy mod...

In this paper, a nonlinear control-system design framework predicated on a hierarchical switching controller architecture parameterized over a set of moving system equilibria is developed. Specifically, using equilibria-dependent Lyapunov functions, a hierarchical nonlinear control strategy is developed that stabilizes a given nonlinear system by stabilizing a collection of nonlinear controlled...

in this paper, a novel compensator based on magnetically controlled reactor with fixed capacitor banks (fc-mcr) is introduced and then power system stability in presence of this compensator is studied using an intelligent control method. the problem of robust fc-mcr-based damping controller design is formulated as a multi-objective optimization problem. the multi-objective problem is concocted ...

A recently suggested general anti-windup (AW) compensation scheme is applied to the nonlinear simulation model of the 1 16 scaled BAe Hawk aircraft model used for wind tunnel experiments. The Hawk is modelled as a nonlinear affine system subject to input constraints and has a primary control system consisting of an inner-loop nonlinear dynamic inversion controller and an outer-loop linear PID c...

In this paper, we present a novel decentralized controller to drive multiple unmanned aerial vehicles (UAVs) into a symmetric formation of regular polygon shape surrounding a mobile target. The proposed controller works for time-varying information exchange topologies among agents and preserves a network connectivity while steering UAVs into a formation. The proposed nonlinear controller is hig...

The swing-up control of a triple pendulum on a cart is presented, where the controller is based on a two-degrees-of-freedom scheme consisting of a nonlinear feedforward controller and an optimal feedback controller. The point-to-point transition task is treated as a nonlinear two-point boundary value problem with free parameters resulting from the suitably projected inputoutput dynamics. The ma...