Browsing by Subject "Closed loop control systems"

Article

Active process control of reactive sputter deposition

Voevodin, A. A.; Stevenson, P.; Rebholz, Claus; Schneider, J. M.; Matthews, A. (1995)

Control of the density, composition, ionisation rate and arrival energy of species is one of the main objectives of research in the development of reactive magnetron sputtering. The deposition of the latest generation of ...

Conference Object

Adaptive vehicle following control system with variable time headways

Zhang, J.; Ioannou, Petros A. (2005)

In this paper, we design a vehicle following control system with variable time headways, using adaptive control design methodology. It is shown that the designed vehicle following control system guarantees closed-loop ...

Conference Object

Comparison of a nonlinear adaptive controller with certainty-equivalence type adaptive controllers

Zhang, Youping; Ioannou, Petros A. (IEEE, 1995)

Recently a new class of adaptive controllers for linear time invariant minimum phase plants has been proposed and analyzed. The design of these controllers is based on nonlinear tools and appears to be different from that ...

Article

Design of strictly positive real systems using constant output feedback

Huang, C. -H; Ioannou, Petros A.; Maroulas, J.; Safonov, M. G. (1999)

In this paper, the authors present a linear matrix inequality (LMI) approach to the strictly positive real (SPR) synthesis problem: find an output feedback K such that the closed-loop system T(s) is SPR. The authors establish ...

Conference Object

Finite-time approximate consensus and its application to distributed frequency regulation in islanded AC microgrids

Cady, S. T.; Domínguez-Garcia, A. D.; Hadjicostis, Christoforos N. (IEEE Computer Society, 2015)

In this paper, we propose an iterative algorithm that allows a set of interconnected nodes to reach approximate consensus in a finite number of steps, i.e., Allows the nodes to reach agreement to within a pre-specified ...

Conference Object

Modeling and control design for a computer controlled brake system

Raza, H.; Xu, Z.; Yang, B.; Ioannou, Petros A. (IEEE, 1996)

In this paper we consider the problem of modeling and control of a computer controlled brake system. The brake model is developed using a series of experiments conducted on a test bench which contains the full scale brake ...

Conference Object

Neural network control of unknown systems

Kosmatopoulos, Elias B.; Chassiakos, Anastassios; Boussalis, Helen R.; Mirmirani, Maj; Ioannou, Petros A. (IEEE, 1998)

In this paper, we show that for all unknown Multi-Input (MI) nonlinear system that affected by external disturbances, it is possible to construct a semi-global state-feedback stabilizer when the only information about the ...

Conference Object

Non-identifier based adaptive control scheme with guaranteed stability

Zhang, J.; Ioannou, Petros A. (2006)

In this paper, we investigate a non-identifier based adaptive control scheme for single-input single-output (SISO) plants. The overall adaptive control system can be viewed as a feedback interconnection of a SISO plant, a ...

Conference Object

On multiobjective H2/H∞ optimal control

Djouadi, S. M.; Charalambous, Charalambos D.; Repperger, D. W. (2001)

In this paper the solutions to the optimal multiobjective H2/H∞ problem are characterized using Banach space duality theory, and shown to satisfy a flatness or allpass condition. Dual and predual spaces are identified, and ...

Article

Parameter convergence of a new class of adaptive controllers

Zhang, Y.; Ioannou, Petros A.; Chien, C. -C (1996)

A new class of adaptive control schemes for minimum-phase linear time invariant (LTI) systems has recently been developed using nonlinear design techniques which guarantee improved transient performance in addition to ...

Article

Performance Analysis And Improvement In Model Reference Adaptive Control

Datta, Aniruddha; Ioannou, Petros A. (1994)

Boundedness of all closed-loop signals and asymptotic convergence of the tracking error to zero or to a residual set are the criteria that have been most commonly used to characterize the performance of model reference ...

Conference Object

Position error signal estimation at high sampling rates using data and servo sector measurements

Ioannou, Petros A.; Kosmatopoulos, E. B.; Despain, A. M. (2002)

Track density in hard disk drives (HDD) is related to the performance characteristics of the HDD servo control system. Higher track density can be achieved by improving the performance characteristics of the servo controller ...

Conference Object

Robust adaptive control for a class of mimo nonlinear systems

Xu, H.; Ioannou, Petros A. (2002)

The design of stabilizing controllers for nonlinear plants with unknown nonlinearities is a challenging problem. The inability to identify the nonlinearities on-line or off-line accurately motivates the design of stabilizing ...

Article

Robust adaptive control for a class of MIMO nonlinear systems with guaranteed error bounds

Xu, H.; Ioannou, Petros A. (2003)

The design of stabilizing controllers for multiple-input-multiple-output (MIMO) nonlinear plants with unknown nonlinearities is a challenging problem. The high dimensionality coupled with the inability to identify the ...

Conference Object

Robust adaptive sliding control of linearizable systems

Xu, H.; Mirmirani, M.; Ioannou, Petros A.; Boussalis, Helen R. (2001)

A switching adaptive control algorithm based on a sliding mode method is proposed for a class of single-input, single-output nonlinear systems with unknown dynamics. The plant is assumed to be linear-in-the-control input ...

Conference Object

Using the milliken moment method and dynamic simulation to evaluate vehicle stability and controllability

Hoffman, R. C.; Louca, Loucas S.; Stein, J. L.; Huh, K. (American Society of Mechanical Engineers (ASME), 2004)

The Milliken Moment Method (MMM) is a way of efficiently organizing the results from a kinematically constrained vehicle test. Using the MMM and closed-loop dynamic simulation, the authors present a new method for evaluating ...

Article

Vehicle Following Control Design for Automated Highway Systems

Raza, H.; Ioannou, Petros A. (1996)