Now showing items 1-19 of 19

    • Adaptive Control of a Generic Hypersonic Vehicle 

      Wiese, Daniel P.; Annaswamy, Anuradha M.; Muse, Jonathan A.; Bolender, Michael A.; Lavretsky, Eugene (2016-03-10)
      This paper presents an adaptive augmented, gain-scheduled baseline LQR-PI controller applied to the Road Runner six-degree-of-freedom generic hypersonic vehicle model. Uncertainty in control effectiveness, longitudinal ...
    • Adaptive Output Feedback Based on Closed-Loop Reference Models for Hypersonic Vehicles 

      Wiese, Daniel P.; Annaswamy, Anuradha M.; Muse, Jonathan A.; Bolender, Michael A.; Lavretsky, Eugene (2016-03-09)
      This paper presents a new method of synthesizing an output feedback adaptive controller for a class of uncertain, non-square, multi-input multi-output systems that often occur in hypersonic vehicle models. The main challenge ...
    • Adaptive Output Feedback Based on Closed-Loop Reference Models for Hypersonic Vehicles 

      Annaswamy, Anuradha M.; Wiese, Daniel P.; Muse, Jonathan A.; Bolender, Michael A.; Lavretksy, Eugene (2015-04-07)
      This paper presents a new method of synthesizing an output feedback adaptive controller for a class of uncertain, non-square, multi-input multi-output systems that often occur in hypersonic vehicle models. The main challenge ...
    • Adaptive Output-Feedback Control for A Class of Multi-Input-Multi-Output Plants with Applications to Very Flexible Aircraft 

      Qu, Zheng; Annaswamy, Anuradha; Lavretsky, Eugene (2015-10-07)
      A dominant presence of parametric model uncertainties necessitates an adaptive approach for control of very flexible aircraft (VFA). This paper proposes an adaptive controller that includes a baseline design based on ...
    • Adaptive Output-Feedback Control with Closed-Loop Reference Models and Applications to Very Flexible Aircraft 

      Qu, Zheng; Anuradha, Annaswamy (2015-04-07)
      This paper proposes an adaptive controller for a class of multi-input multi-output (MIMO) plants where the number of outputs is larger than the number of inputs, an example of which is very-flexible aircraft (VFA). A ...
    • Analysis of Slow Convergence Regions in Adaptive Systems 

      Nouwens, Oscar; Annaswamy, Anuradha; Lavretsky, Eugene (2015-10-07)
      We examine convergence properties of errors in a class of adaptive systems that corresponds to adaptive control of linear time-invariant plants with state variables accessible. We demonstrate the existence of a sticking ...
    • Co-Design of Arbitrated Network Control Systems with Overrun Strategies 

      Soudbakhsh, Damoon; Phan, Linh; Annaswamy, Anuradha; Sokolsky, Oleg (2015-06-28)
      This paper addresses co-design of platform and control of multiple control applications in a network control system. Limited and shared resources among control and noncontrol applications introduce delays in transmitted ...
    • Delay-Aware Control Designs of Wide-Area Power Networks: Proofs of the Results 

      Dibaji, Seyed Mehran; Yildiz, Yildiray; Annaswamy, Anuradha; Chakrabortty, Aranya; Soudbakhsh, Damoon (2017-04-07)
      The purpose of this document is to provide proofs of the results in Dibaji et al. (2017).
    • A Delay-Aware Cyber-Physical Architecture for Wide-Area Control of Power Systems 

      Soudbakhsh, Damoon; Chakrabortty, Aranya; Alvarez, Francisco; Annaswamy, Anuradha (2015-06-28)
      In this paper we address the problem of widearea control of power systems in presence of different classes of network delays. We pose the control objective as an LQR minimization of the electro-mechanical states of the ...
    • A Dynamic Market Mechanism for Integration of Renewables and Demand Response 

      Knudsen, Jesper; Hansen, Jacob; Annaswamy, Anuradha M. (2015-04-21)
      The most formidable challenge in assembling a Smart Grid is the integration of a high penetration of renewables. Demand Response, a largely promising concept, is increasingly discussed as a means to cope with the intermittent ...
    • Foundations of Infrastructure CPS 

      Annaswamy, Anuradha; Hussain, Alefiya; Chakrabortty, Aranya; Cvetkovic, Milos (2015-10-07)
      Infrastructures have been around as long as urban centers, supporting a society’s needs for its planning, operation, and safety. As we move deeper into the 21st century, these infrastructures are becoming smart – they ...
    • Frequency Control using Cooperative Demand Response through Accumulated Energy 

      Cvetkovic, Milos; Annaswamy, Anuradha (2015-10-07)
      This paper proposes a hierarchical control architecture for engaging demand into providing primary frequency response services. The proposed architecture relies on the use of information about accumulated energy for the ...
    • An Integrated Dynamic Market Mechanism for Real-time Markets and Frequency Regulation 

      Shiltz, Dylan; Cvetkovic, Milos; Annaswamy, Anuradha M. (2015-04-21)
    • A Model-based Dynamic Toll Pricing Strategy for Controlling Highway Traffic 

      Phan, Thao; Annaswamy, Anuradha; Yanakiev, Diana; Tseng, Eric (2015-10-07)
      A model-based approach to dynamic toll pricing has been developed to provide a systematic method for determining optimal freeway pricing schemes. A novel approach is suggested for alleviating congestion, which utilizes ...
    • A Practical Integration of Automatic Generation Control and Demand Response 

      Shiltz, Dylan; Annaswamy, Anuradha (2015-10-16)
      For a power grid to operate properly, electrical frequency must be continuously maintained close to its nominal value. Increasing penetration of distributed generation, such as solar and wind generation, introduces ...
    • Sequential Loop Closure Based Adaptive Autopilot Design for a Hypersonic Vehicle 

      Wiese, Daniel P.; Annaswamy, Anuradha M.; Muse, Jonathan A.; Bolender, Michael A.; Lavretsky, Eugene (2016-03-09)
      This paper presents a sequential loop closure approach to designing a velocity and altitude tracking au- topilot for a hypersonic vehicle. The control architecture consists of two decoupled control subsystems, one for ...
    • A Systems and Control Perspective of CPS Security 

      Dibaji, Seyed Mehran; Pirani, Mohammad; Flamholz, David Bezalel; Annaswamy, Anuradha M.; Johansson, Karl Henrik; e.a. (2019-01-22)
      Abstract—The comprehensive integration of instrumentation, communication, and control into physical systems has led to the study of Cyber-Physical Systems (CPS), a field that has recently garnered increased attention. ...
    • Towards Resilient Cyber-Physical Energy Systems 

      Baros, Stefanos; Shiltz, Dylan; Jaipuria, Prateek; Hussain, Alefiya; Annaswamy, Anuradha M. (2017-03-14)
      In this paper, we develop a system-of-systems framework to address cyber-physical resilience, the ability to withstand the combined presence of both cyber attacks and physi-cal faults. This framework incorporates a definition ...
    • Utilization-Aware Adaptive Back-Pressure Traffic Signal Control 

      Chang, Wanli; Chakraborty, Samarjit; Annaswamy, Anuradha (2015-10-07)
      Back-pressure control of traffic signal, which computes the control phase to apply based on the real-time queue lengths, has been proposed recently. Features of it include (i) provably maximum stability, (ii) low ...