This paper describes the design and experimental implementation of a discrete-time fixed-order H∞ controller for a DC motor speed and position control. To provide a model for the DC motor, two system identification techniques are employed. In the first one a model for DC motor speed control is identified in open-loop based on black box modeling whereas in the other one a model for position cont...

Robust controller synthesis is of great practical interest and its automation is a key concern in control system design. Automatic controller synthesis is still a open problem. In this paper a new, efficient method has been proposed for automated synthesis of a fixed structure quantitative feedback theory (QFT) controller by solving QFT quadratic inequalities of robust stability and performance...

a multi objective honey bee mating optimization (hbmo) designed by online learning mechanism is proposed in this paper to optimize the double fuzzy-lead-lag (fll) stabilizer parameters in order to improve low-frequency oscillations in a multi machine power system. the proposed double fll stabilizer consists of a low pass filter and two fuzzy logic controllers whose parameters can be set by the ...

The set of all positive definite periodic covariances that a linear discrete periodically time-varying plant with a fixed order controller may process is characterized in this paper. The controllers which assign such periodic covariance to any linear discrete periodically time-varying system are given explicitly in the closed form. The freedom in those covariance controllers is explicitly param...

The aim of this paper is to present the methodology of programming the FPAA (Field Programmable Analog Arrays) in an automatic way. In the field of control the automatic design of the analogue controller structure is specially interesting. In many cases it is possible to fix some structures of the controllers and adapt their parameters to the controlled system. The controller design procedure c...

In this paper, we develop a new control technique for discrete event dynamic systems subject to synchronization phenomena. We propose a feedback controller for (max,+)-linear systems which delays input events as little as possible while constraints on internal or output events are satisfied. The synthesis is mainly based on new results about fixed points of antitone (i.e., order reversing) mapp...

This paper investigates the local asymptotic stabilization of a very general class of instable autonomous nonlinear difference equations which are subject to perturbed dynamics which can have a different order than that of the nominal difference equation. In the general case, the controller consists of two combined parts, namely, the feedback nominal controller which stabilizes the nominal i.e....

This paper deals with the decentralized overlapping control of interconnected systems. The notion of a quotient overlapping fixed mode (QOFM) is first introduced and it is shown that a mode of an interconnected linear time-invariant system can be shifted by means of a general decentralized overlapping controller if and only if it is not a QOFM. It is then asserted that any interconnected system...

In this paper, the Unified Power Flow Controller (UPFC) is enhanced with a Chaotic Particle Swarm Optimization (CPSO) Damping Controller in order to mitigate the Low Frequency Oscillations (LFO) in a Single Machine Infinite Bus (SMIB) power system. The designed damping controller is an optimized lead-lag controller, which extracts the speed deviation of the generator rotor and generates the out...

Abstract—This paper is proposed an algorithm, Genetic Algorithm (GA) based fixed-structure Η loop shaping control, to the problem-solving of conventional Η loop shaping, such as high-order and difficult to be usable in general. In this approach, a structure of controller is specified combine Η loop shaping method is solved by GA algorithm. Additionally, in the proposed technique, the desired...