Dennis S. Bernstein

Duhem Models for Hysteresis in Sliding and Presliding Friction* (2009)

Jinhyoung Oh, Ashwani K. Padthe, Dennis S. Bernstein, Demosthenis D. Rizos, Spilios D. Fassois

Abstract — In this paper we analyze the Dahl, LuGre, and Maxwell-slip friction models as Duhem hysteresis models. We classify each model as either a generalized or a semilinear Duhem model, and we...

A Student's Guide to Research 1 by (2007)

Dennis S. Bernstein

Research is the search for new knowledge, and it is thus distinct from the routine application of known results. The "re " in "research " is a misnomer. When you...

A Student’s Guide to Peer Review by (2007)

Dennis S. Bernstein

Publishing is an essential part of research. Publications provide a lasting record of scientific accomplishment that other researchers can refer to and build on. Before a manuscript is accepted for...

Adaptive Stabilization and Disturbance Rejection for First-Order Systems 1 (2007)

Harshad S. Sane, Er V. Roup, Dennis S. Bernstein, Hector J. Sussmann

We consider the use of a discontinuous adaptive control algorithm to achieve simultaneous stabilization and disturbance rejection for a rst-order linear system. Lyapunov methods are used to prove...

Guaranteed Cost Inequalities for Robust Stability and Performance Analysis (2007)

Scot L. Osburn, Dennis S. Bernstein

For unstructured time-varying or complex uncertainty, the small gain theorem provides a nonconservative test for robust stability [1]-[5]. For structured, and possibly real uncertainty, however, the...

Electric Potential Estimation with Line-of-Sight Measurements Using Basis Function Optimization (2007)

Harish J. Palanth, Steven Gillijns, Aaron J. Ridley, Dennis S. Bernstein, Bart De Moor

Given line-of-sight drift-velocity measurements at points on the earth, our goal is to estimate the electric potential distribution to match the drift velocity pattern. The electric potential is...

Robust Fixed-Structure Control (2006)

Bernstein, Dennis S.

This final report for AFOSR Grant F49620-92-J-0127 summarizes results obtained in five areas, namely, robust control, linear control, sampled-data control, tracking and disturbance rejection, and...

Lyapunov-stable discrete-time model reference adaptive control (2005)

Akhtar, S., Bernstein, Dennis S.

Discrete-time model reference adaptive control (MRAC) is considered with both least squares and projection algorithm parameter identification. For both cases complete Lyapunov proofs are given for...

Geometric homogeneity with applications to finite-time stability (2005)

Bernstein, Dennis S., Bhat, S. P.

This paper studies properties of homogeneous systems in a geometric, coordinate-free setting. A key contribution of this paper is a result relating regularity properties of a homogeneous function to...

Maximum Entropy/Optimal Projection Design Synthesis for Decentralized Control of Large Space Structures. (2005)

Hyland, David C., Bernstein, Dennis S.

The maximum Entropy/Optical Projection (MEOP) methodology is a novel approach to designing implementable vibration-suppression controllers for large space systems. Two issues, in particular, have...

Guaranteed cost inequalities for robust stability and performance analysis (2002)

Bernstein, Dennis S., Osburn, Scot L.

In this paper, we formulate robust stability and performance bounds in terms of guaranteed cost inequalities. We derive new guaranteed cost bounds for plants with real structured uncertainty, and we...

Exploration of the Maximum Entropy/Optimal Projection Approach to Control Design Synthesis for Large Space Structures. (2002)

Hyland,David C., Bernstein,Dennis S.

Increased interest in deploying large flexible spacecraft has focused attention on active structural control techniques to achieve crucial advances in vibration suppression, pointing accuracy and...

Induced Convolution Operator Norms of Linear Dynamical Systems (2000)

Wilson, David A., Haddad, Wassim M., Chellaboina, VijaySekhar, Bernstein, Dennis S.

In this paper we develop explicit formulas for induced convolution operator norms and their bounds. These results generalize established induced operator norms for linear dynamical systems with...

Output Feedback Adaptive Stabilization of a Second-Order Systems (2000)

Harshad S. Sane, Héctor J. Sussmann, Dennis S. Bernstein

We consider output feedback adaptive stabilization for second-order systems. The assumptions we make are standard, namely, that the system has relative degree two and the sign of the high frequency...

A student’s guide to research (1999)

Dennis S. Bernstein

Research is the search for new knowledge, and it is thus distinct from the routine application of known results. The "re " in "research " is a misnomer. When you...

Maximum Entropy/Optimal Projection Design Synthesis for Decentralized Control of Large Space Structures. (1998)

Hyland, David C., Bernstein, Dennis S.

The Maximum Entropy/Optimal Projection (MEOP) Methodology is a novel approach to designing implementable vibration-suppression controllers for large space systems. Two issues, in particular, have...

OPUS: Optimal Projection for Uncertain Systems. (1998)

Bernstein, Dennis S.

OPUS: Optimal Projection for Uncertain Systems is a unified approach to control-system design and analysis for high-performance, multivariable applications such as large flexible space structures. In...

Active Nonlinear Feedback Control for Aerospace Systems. Processor. (1998)

Hyland, David C., Bernstein, Dennis S.

Although the theory of linear control systems is highly mature, nonlinear control-system design techniques remain relatively undeveloped. In real-world applications such as vibrations suppression in...

OPUS: Optimal Projection for Uncertain Systems. Volume 1. (1998)

Bernstein, Dennis S., Haddad, Wassim M.

OPUS (Optimal Projection for Uncertain Systems) is a unified approach to control-system design and analysis for high-performance, multivariable applications such as large flexible space structures....

OPUS: Optimal Projection for Uncertain Systems. Volume 2. (1998)

Bernstein, Dennis S., Haddad, Wassim M.

OPUS (Optimal Projection for Uncertain Systems) is a unified approach to control-system design and analysis for high-performance, multivariable applications such as large flexible space structures....

Robust Fixed-Structure Control. (1998)

Bernstein, Dennis S.

This final report for AFOSR Grant F49620-92-J-0127 summarizes results obtained in five areas, namely, robust control, linear control, sampled-data control, tracking and disturbance rejection, and...

Robust, Nonlinear Feedback Control (1998)

Bernstein, Dennis S.

This project has encompassed research in four areas of control theory, namely robust, fixed structure control, identification, adaptive cancellation, and nonlinear control. The robust, fixed...

State Space Identification and Active Structural Control for the ACTEX Experiment (1998)

Bernstein, Dennis S.

The purpose of this work was to develop a stronger theoretical foundation for the Juan-Pappas eigensystem realization algorithm. This technique is a widely used method from impulse response data....

A Real-Time Multi-Processor for Adaptive Control Experiments (1998)

Bernstein, Dennis S.

The objective of this project was to acquire instrumentation that will advance the state of the art in real time control and enhance the transition of new adaptive control techniques to DoD...

Intelligenct Flight Control of Uninhabited Aerial Vehicles (1998)

Bernstein, Dennis S.

The goal of this project was to develop, implement, and demonstrate intelligence flight control technology. During the previous two reporting periods, constriction of the flight test vehicle was...

Experimental and Theoretical Techniques for Nonlinear Identification and Adaptive Cancellation (1998)

Bernstein, Dennis S.

Under this project we developed and demonstrated new techniques for identification and adaptive control. For linear identification, we developed quadratically constrained least squares (QCLS)...

A High Precision Triaxial Air Bearing for Research in Spacecraft Dynamics and Control (1998)

Bernstein, Dennis S., McClamroch, N. H., Bloch, Anthony M.

Under this project we acquired equipment for research on spacecraft attitude dynamics. A single-degree-of-freedom air spindle and a triaxial air bearing were developed. In addition, we acquired...

A Six-Degree-of-Freedom Shaker Table, Active Isolator, and Gimbaled Stage for Research in Precision Motion Control and Target Tracking (1998)

Bernstein, Dennis S.

We have acquired a unique facility that will allow us to conduct experimental research relating to precision motion control and target tracking in a high disturbance environment. The principal...

Nonlinear Identification and Adaptive Control (1998)

Bernstein, Dennis S.

To address Air Force applications, new methods are developed for system identification (ID) and adaptive control. For linear systems, ID algorithms are developed to obtain consistent parameter...

Identification of FIR Wiener Systems With Unknown, Non-Invertible, Polynomial Non-Linearities (1998)

Lacy, Seth L., Bernstein, Dennis S.

Wiener systems consist of a linear dynamic system whose output is measured through a static non-linearity. In this paper we study the identification of single-input single-output Wiener systems with...

Spacecraft Trajectory Estimation Using a Sampled-Data Extended Kalman Filter with Range-Only Measurements (1998)

Erwin, R. S., Bernstein, Dennis S.

Determining the trajectory or a body orbiting the Earth is a fundamental task in astrodynamics. In this paper we use a sampled-data extended Kalman Filter to estimate the trajectory or a target...

Fixed-structure robust controller synthesis via decentralized static output feedback (1998)

Erwin, R. Scott, Sparks, Andrew G., Bernstein, Dennis S.

This paper describes and illustrates a unified methodology for robust, fixed-structure controller synthesis. The approach is based upon direct fixed-structure controller synthesis using a...

Global Asymptotic Stabilization of a Spinning Top With Torque Actuators Using Stereographic Projection (1997)

Wan, Chih-Jian, Tsiotras, P., Coppola, Vincent T., Bernstein, Dennis S.

The dynamical equations for a spinning top are derived in which theorientation is specified by a complex variable using stereographic projectionof Poisson's equations. Necessary and sufficient...

Global stabilization of the oscillating eccentric rotor (1996)

Wan, Chih-Jian, Bernstein, Dennis S., Coppola, Vincent T.

The oscillating eccentric rotor has been widely studied to model resonance capture phenomena occurring in dual-spin spacecraft and rotating machinery. This phenomenon arises during spin-up as a...

Nonlinear feedback control with global stabilization (1995)

Wan, Chih-Jian, Bernstein, Dennis S.

Hamilton-Jacobi-Bellman theory is shown to provide a unified framework for nonlinear feedback control laws for special classes of nonlinear systems. These classes include Jurdjevic-Quinn type...

H2-suboptimal stable stabilization, (1994)

Wang, Y. William, Bernstein, Dennis S.

In this paper we present two approaches for designing H2-suboptimal stable controllers. Both full-order and reduced-order controllers are considered.

Parameter-dependent Lyapunov functions and the discrete-time Popov criterion for robust analysis, (1994)

Haddad, Wassim M., Bernstein, Dennis S.

Parameter-dependent Lyapunov functions are developed for discrete-time systems with constant real parameter uncertainty. This construction of a family of Lyapunov functions is then used to analyze...

Maximum-entropy-type Lyapunov functions for robust stability and performance analysis (1993)

Bernstein, Dennis S., Haddad, Wassim M., Hyland, David C., Tyan, Feng

We present two Lyapunov functions that ensure the unconditional stability and robust performance of a modal system with uncertain damped natural frequency. Each Lyapunov function involves the sum of...

A riccati equation approach to the singular LQG problem (1993)

Halevi, Yoram, Haddad, Wassim M., Bernstein, Dennis S.

The problem of optimal fixed-order dynamic compensation for the singular LQG problem is considered. Necessary conditions characterizing the optimal compensator for the case involving both singular...

Some open problems in matrix theory arising in linear systems and control (1992)

Bernstein, Dennis S.

Control theory has long provided a rich source of motivation for developments in matrix theory. Accordingly, we discuss some open problems in matrix theory arising from theoretical and practical...

Second-order necessary conditions in optimal control: Accessory-problem results without normality conditions (1983)

Gilbert, Elmer Grant, Bernstein, Dennis S.

An optimal control problem, which includes restrictions on the controls and equality/inequality constraints on the terminal states, is formulated. Second-order necessary conditions of the...

Direct adaptive command following and disturbance rejection for minimum phase systems with unknown relative degree

Hoagg, Jesse B., Bernstein, Dennis S.

This paper considers parameter-monotonic direct adaptive command following and disturbance rejection for single-input single-output minimum-phase linear time-invariant systems with knowledge of the...