Oguzhan Cifdaloz - Academia.edu (original) (raw)
Papers by Oguzhan Cifdaloz
TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2021
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GAZI UNIVERSITY JOURNAL OF SCIENCE, 2021
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Challenges and Paradigms in Applied Robust Control, 2011
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AIAA Guidance, Navigation and Control Conference and Exhibit, 2008
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Proceedings of the National Academy of Sciences, 2007
A critical challenge faced by sustainability science is to develop strategies to cope with highly... more A critical challenge faced by sustainability science is to develop strategies to cope with highly uncertain social and ecological dynamics. This article explores the use of the robust control framework toward this end. After briefly outlining the robust control framework, we apply it to the traditional Gordon–Schaefer fishery model to explore fundamental performance–robustness and robustness–vulnerability trade-offs in natural resource management. We find that the classic optimal control policy can be very sensitive to parametric uncertainty. By exploring a large class of alternative strategies, we show that there are no panaceas: even mild robustness properties are difficult to achieve, and increasing robustness to some parameters (e.g., biological parameters) results in decreased robustness with respect to others (e.g., economic parameters). On the basis of this example, we extract some broader themes for better management of resources under uncertainty and for sustainability scie...
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Environmental Modeling & Assessment, 2010
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2009 American Control Conference, 2009
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2021 8th International Conference on Electrical and Electronics Engineering (ICEEE)
Renewable resources are being over exploited at an increasing rate. Institutions/governments are ... more Renewable resources are being over exploited at an increasing rate. Institutions/governments are compelled to devise effective policies and strategies to sustainably manage renewable resources under social, ecological and environmental pressures that stem from increasing demand, model uncertainties, disturbances, and measurement errors. Open-access policies to harvest renewable resources are still widely used around the world. They are mildly regulated by implementing landing quotas, defining harvesting seasons, and/or constraining the technology used for harvesting. In many parts of the world, including the regions that are highly developed, open-access fisheries are failing. In this paper, management of an open-access renewable resource (fishery) with depensation dynamics is formulated as a control systems problem and a strategy to sustainably manage the renewable resource is proposed. First, dynamics of an unregulated open-access fishery is described and its ulnerabilities are stated. Then, an easy-to-implement regulation strategy based on classical control systems ideas is proposed and its robustness characteristics are provided. The management policy (control law) is implemented via manipulating economic variables, i.e. by adjusting the (opportunity) cost of harvesting. An agent-based model is used to model the resource exploiters (i.e. fishermen). It is shown that a classical control law can be used to effectively manage an open access fishery subject to sampling effects.
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Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. K... more Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. Koenig, Karen M. Linda, Oguzhan Cifdaloz, Valana L. Wells, and Armando A. Rodriguez Index Terms:Tilt-Wing, Rotary-Wing ...
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Pnas, 2007
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Proceedings of the 44th IEEE Conference on Decision and Control, 2005
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American Control Conference, 2005
This paper shows how convex optimization may be used to design near-optimal finite-dimensional co... more This paper shows how convex optimization may be used to design near-optimal finite-dimensional compensators for stable linear time invariant (LTI) infinite dimensional plants. The infinite dimensional plant is approximated by a finite dimensional transfer function matrix. The Youla parameterization is used to parameterize the set of all stabilizing LTI controllers and formulate a weighted mixed-sensitivity H∞ optimization that is convex
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2007 46th IEEE Conference on Decision and Control, 2007
This paper focuses on Hinfin near-optimal finite- dimensional compensator design for linear time ... more This paper focuses on Hinfin near-optimal finite- dimensional compensator design for linear time invariant (LTI) distributed parameter plants subject to convex constraints. The distributed parameter plant is first approximated by a finite dimensional approximant. For unstable plants, the coprime factors are approximated by their finite dimensional approximants. The Youla parameterization is then used to parameterize the set of all stabilizing
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Conference on Decision and Control, 2006
This paper describes the development an analysis of robust, multi-variable H∞ control systems for... more This paper describes the development an analysis of robust, multi-variable H∞ control systems for the conversion of the high-speed autonomous rotorcraft vehicle (HARVee), an experimental tilt-wing aircraft. Tilt-wing aircraft combine the high-speed cruise capabilities of a conventional airplane with the vertical takeoff and station keeping abilities of a helicopter by rotating their wings at the fuselage. Changing between cruise and
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Decision and Control, …
Page 1. H∞ Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft Jeffrey J. Dickeson, David R. Mi... more Page 1. H∞ Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft Jeffrey J. Dickeson, David R. Mix, John S. Koenig, Karen M. Linda, Oguzhan Cifdaloz, Valana L. Wells, and Armando A. Rodriguez Abstract This paper describes ...
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Decision and Control, …
Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. K... more Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. Koenig, Karen M. Linda, Oguzhan Cifdaloz, Valana L. Wells, and Armando A. Rodriguez Index Terms:Tilt-Wing, Rotary-Wing ...
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American Control Conference, 2006
Page 1. Constrained H∞ Mixed-Sensitivity Optimization for Stable Infinite-Dimensional Plants: App... more Page 1. Constrained H∞ Mixed-Sensitivity Optimization for Stable Infinite-Dimensional Plants: Application to Thermal Diffusion Process Oguzhan Cifdaloz and Armando A. Rodriguez AbstractThis paper shows how H∞ near ...
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… and Control, 2005 …, 2005
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Decision and Control, …
Page 1. Robust LPV H∞ Gain-Scheduled Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft in the... more Page 1. Robust LPV H∞ Gain-Scheduled Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft in the Presence of CG Variations Jeffrey J. Dickeson David Miles Oguzhan Cifdaloz Valana L. Wells Armando A. Rodriguez Intelligent ...
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TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2021
Bookmarks Related papers MentionsView impact
GAZI UNIVERSITY JOURNAL OF SCIENCE, 2021
Bookmarks Related papers MentionsView impact
Challenges and Paradigms in Applied Robust Control, 2011
Bookmarks Related papers MentionsView impact
AIAA Guidance, Navigation and Control Conference and Exhibit, 2008
Bookmarks Related papers MentionsView impact
Proceedings of the National Academy of Sciences, 2007
A critical challenge faced by sustainability science is to develop strategies to cope with highly... more A critical challenge faced by sustainability science is to develop strategies to cope with highly uncertain social and ecological dynamics. This article explores the use of the robust control framework toward this end. After briefly outlining the robust control framework, we apply it to the traditional Gordon–Schaefer fishery model to explore fundamental performance–robustness and robustness–vulnerability trade-offs in natural resource management. We find that the classic optimal control policy can be very sensitive to parametric uncertainty. By exploring a large class of alternative strategies, we show that there are no panaceas: even mild robustness properties are difficult to achieve, and increasing robustness to some parameters (e.g., biological parameters) results in decreased robustness with respect to others (e.g., economic parameters). On the basis of this example, we extract some broader themes for better management of resources under uncertainty and for sustainability scie...
Bookmarks Related papers MentionsView impact
Environmental Modeling & Assessment, 2010
Bookmarks Related papers MentionsView impact
2009 American Control Conference, 2009
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
2021 8th International Conference on Electrical and Electronics Engineering (ICEEE)
Renewable resources are being over exploited at an increasing rate. Institutions/governments are ... more Renewable resources are being over exploited at an increasing rate. Institutions/governments are compelled to devise effective policies and strategies to sustainably manage renewable resources under social, ecological and environmental pressures that stem from increasing demand, model uncertainties, disturbances, and measurement errors. Open-access policies to harvest renewable resources are still widely used around the world. They are mildly regulated by implementing landing quotas, defining harvesting seasons, and/or constraining the technology used for harvesting. In many parts of the world, including the regions that are highly developed, open-access fisheries are failing. In this paper, management of an open-access renewable resource (fishery) with depensation dynamics is formulated as a control systems problem and a strategy to sustainably manage the renewable resource is proposed. First, dynamics of an unregulated open-access fishery is described and its ulnerabilities are stated. Then, an easy-to-implement regulation strategy based on classical control systems ideas is proposed and its robustness characteristics are provided. The management policy (control law) is implemented via manipulating economic variables, i.e. by adjusting the (opportunity) cost of harvesting. An agent-based model is used to model the resource exploiters (i.e. fishermen). It is shown that a classical control law can be used to effectively manage an open access fishery subject to sampling effects.
Bookmarks Related papers MentionsView impact
Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. K... more Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. Koenig, Karen M. Linda, Oguzhan Cifdaloz, Valana L. Wells, and Armando A. Rodriguez Index Terms:Tilt-Wing, Rotary-Wing ...
Bookmarks Related papers MentionsView impact
Pnas, 2007
Bookmarks Related papers MentionsView impact
Proceedings of the 44th IEEE Conference on Decision and Control, 2005
Bookmarks Related papers MentionsView impact
American Control Conference, 2005
This paper shows how convex optimization may be used to design near-optimal finite-dimensional co... more This paper shows how convex optimization may be used to design near-optimal finite-dimensional compensators for stable linear time invariant (LTI) infinite dimensional plants. The infinite dimensional plant is approximated by a finite dimensional transfer function matrix. The Youla parameterization is used to parameterize the set of all stabilizing LTI controllers and formulate a weighted mixed-sensitivity H∞ optimization that is convex
Bookmarks Related papers MentionsView impact
2007 46th IEEE Conference on Decision and Control, 2007
This paper focuses on Hinfin near-optimal finite- dimensional compensator design for linear time ... more This paper focuses on Hinfin near-optimal finite- dimensional compensator design for linear time invariant (LTI) distributed parameter plants subject to convex constraints. The distributed parameter plant is first approximated by a finite dimensional approximant. For unstable plants, the coprime factors are approximated by their finite dimensional approximants. The Youla parameterization is then used to parameterize the set of all stabilizing
Bookmarks Related papers MentionsView impact
Conference on Decision and Control, 2006
This paper describes the development an analysis of robust, multi-variable H∞ control systems for... more This paper describes the development an analysis of robust, multi-variable H∞ control systems for the conversion of the high-speed autonomous rotorcraft vehicle (HARVee), an experimental tilt-wing aircraft. Tilt-wing aircraft combine the high-speed cruise capabilities of a conventional airplane with the vertical takeoff and station keeping abilities of a helicopter by rotating their wings at the fuselage. Changing between cruise and
Bookmarks Related papers MentionsView impact
Decision and Control, …
Page 1. H∞ Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft Jeffrey J. Dickeson, David R. Mi... more Page 1. H∞ Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft Jeffrey J. Dickeson, David R. Mix, John S. Koenig, Karen M. Linda, Oguzhan Cifdaloz, Valana L. Wells, and Armando A. Rodriguez Abstract This paper describes ...
Bookmarks Related papers MentionsView impact
Decision and Control, …
Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. K... more Page 1. Towards Gain-Scheduled H∞ Control Design for a Tilt-Wing Aircraft David R. Mix, John S. Koenig, Karen M. Linda, Oguzhan Cifdaloz, Valana L. Wells, and Armando A. Rodriguez Index Terms:Tilt-Wing, Rotary-Wing ...
Bookmarks Related papers MentionsView impact
American Control Conference, 2006
Page 1. Constrained H∞ Mixed-Sensitivity Optimization for Stable Infinite-Dimensional Plants: App... more Page 1. Constrained H∞ Mixed-Sensitivity Optimization for Stable Infinite-Dimensional Plants: Application to Thermal Diffusion Process Oguzhan Cifdaloz and Armando A. Rodriguez AbstractThis paper shows how H∞ near ...
Bookmarks Related papers MentionsView impact
… and Control, 2005 …, 2005
Bookmarks Related papers MentionsView impact
Decision and Control, …
Page 1. Robust LPV H∞ Gain-Scheduled Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft in the... more Page 1. Robust LPV H∞ Gain-Scheduled Hover-to-Cruise Conversion for a Tilt-Wing Rotorcraft in the Presence of CG Variations Jeffrey J. Dickeson David Miles Oguzhan Cifdaloz Valana L. Wells Armando A. Rodriguez Intelligent ...
Bookmarks Related papers MentionsView impact