| Robustness and Transition to Turbulence in Boundary Layer Flows |
MAR 2001 |
21 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA CONTROL AND DYNAMICAL SYSTEMS
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 | Understanding the dynamics of transition to turbulence in shear flows has been a long standing problem, and although substantial progress has been made in various directions to this effect, there is still no consistent theory. As prt of AFOSR MURI project 'Uncertainty Management in Complex Systems' at the California Institute of Technology (CalTech) with John Doyle as the principal investigator, a novel theory was developed on the transition to turbulence ... |
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| Bioinspired Concepts: Unified Theory for Complex Biological and Engineering Systems |
2001 |
39 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA CONTROL AND DYNAMICAL SYSTEMS
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| The overall long-term objective of our research is to develop mathematical and software infrastructure in support of post-genomics research in systems biology. One near-term objective articulated in this abstract centers in a deeper understanding of the organizational principles of biological networks. |
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| Robust Nonlinear Control Theory with Applications to Aerospace Vehicles |
23 MAR 2000 |
22 pages |
| Authors:
Richard M. Murray; Gary Balas; John C. Doyle; Jerrold E. Marsden; CALIFORNIA INST OF TECH PASADENA
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| The focus of this program is fundamental research in general methods of analysis and design of complex uncertain nonlinear systems. The approach builds on our recent success in blending robust and nonlinear control methods with a much greater emphasis on the use of local and global techniques in nonlinear dynamical systems theory. Specific areas of accomplishment include real-time trajectory generation for unmanned aerial vehicles, geometric mechanics and nonlinear stabilization, linear ... |
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| Workshop on Theoretical Foundations of Virtual Engineering and Complex Systems |
01 NOV 1998 |
5 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
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| This program was a workshop held at Caltech December 1-5, 1997. The documentation for the workshop, including participants, their email and website addresses, the schedule, presentation materials, and a tutorial are available online at the workshop website: http://www.cds.caltech.edu/vecs. Because most of the workshop involved computer displayed material, the most suitable format for presentation is the website. The aim was for the workshop to function as nearly paperless as possible. Thus ... |
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| Nonlinear Robust Control Theory and Applications |
NOV 1998 |
16 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
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| This research has developed a suite of fundamental tools for automating the system design, system identification, controller synthesis, and various aspects of analysis and simulation. |
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| Robust Control Theory and Applications |
06 FEB 98 |
46 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
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| This AASERT program supported research in robust simulation, hierarchical uncertainty representation, and novel methods for robustness analysis of uncertain systems. In the context of this program, robust simulation means simulating simultaneously sets of initial conditions and disturbance or noise signals. Thus sets of state space must be propagated by the dynamics of the model. Initial investigations have focused on piecewise linear discrete time systems, which map polyhedra to polyhedra at ... |
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| Nonlinear Robust Control Theory and Applications |
18 JAN 1997 |
11 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
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| Model based control methods are commonly used in the design of large, complex systems. Specifically, a mathematical model of the system is constructed, utilizing, for example, first principles analysis and experimental data, which is then used for subsequent control system design and analysis. For the purposes of feedback control highly accurate models are desired. However, such accuracy often requires that complicated high order models be used, which in turn lead ... |
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| Nonlinear Robust Control Theory and Applications |
10 OCT 95 |
4 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA DEPT OF ELECTRICAL ENGINEERING
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| Robert M'Closkey (now an Assistant Professor in the Mechanical Engineering Department at UCLA) worked in the general area of stabilization of strongly nonlinear systems. His thesis work addresses various control theoretic aspects of driftless control systems. Driftiess systems area class of nonlinear problems that arise in physical systems with nonintegrable (nonholonomic) constraints and/or conservation laws. The stabilization of these systems present special problems no continuous dynamics or static function of ... |
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| Robust Control of Uncertain Nonlinear Systems |
95 |
5 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
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| Active Control of Instabilities in Jet Engines |
94 |
31 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
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| Advances in several areas of robust control theory and its applications were made during the extension of this program. Our emphasis has been in the development of computable measures of performance robustness for both linear and nonlinear systems, and in the development of computationally sound identification algorithms. In the following paragraphs we briefly discuss the main areas of our program. A detailed description of the results obtained and the future ... |
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| Robust Control of Multivariable and Large Scale Systems |
23 MAR 88 |
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| Authors:
Andrew Packard; John C. Doyle; HONEYWELL SYSTEMS AND RESEARCH CENTER MINNEAPOLIS MN
|
 | This report gives fairly complete introduction to the Structured Singular Value (mu) and detail some of the latest results. The mu-based methods discussed here have proven to be useful for analyzing the performance and robustness properties of linear feedback systems. This report also describes the recent nonlinear extensions. A description is given for how parametric uncertainty in state space models can be rearranged into the mu framework. The theories for ... |
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| Robust Control of Multivariable and Large Scale Systems |
14 MAR 86 |
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| Authors:
John C. Doyle; Cheng C. Chu; HONEYWELL SYSTEMS AND RESEARCH CENTER MINNEAPOLIS MN
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| New methods are presented for analysis and synthesis of control systems subject to structured uncertainties. The technical approach involves the structured singular value, as an analysis tool and H infinity as a synthesis tool. Alternative formulations are compared with the H infinity approach, extensions of mu to handle real parameter problems are presented, and the issue of the convergence of mu synthesis to a global optimum is studied. A comprehensive ... |
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Reports by Author
