Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Linear matrix inequality"”.
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Multisensor Signal Processing: Theory and Algorithms for Image -Based Rendering and Multichannel Sampling
… theory tools, including model-matching and linear matrix inequality. The designed system is robust against delay estimate errors.
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Flight Dynamic Constraints in Conceptual Aircraft Multidisciplinary Analysis and Design Optimization
… and actuators to be rapidly synthesized. A linear matrix inequality (LMI) problem formulation provides a general and scalable numerical technique for computing the feedback control laws using convex optimization tools. The VCFQ approach is exercised in a design optimization study of a …
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A General Framework for the Control of Nonlinear Systems
… effective controller design techniques for nonlinear processes is the lack of a nonconservative framework for analyzing the closed loop stability and performance of generic nonlinear dynamical systems. Such a framework can be developed for systems consisting of interconnections of linear …
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Design of robust active trailer steering controllers for multi-trailer articulated heavy vehicles using software/hardware-in-the-loop real-time simulations
… techniques is proposed. In recent years, the Linear Quadratic Regular (LQR) technique has been applied to the design of controllers for ATS systems of Articulated Heavy Vehicles (AHVs). In the LQR-based controller designs, all vehicle system parameters, e.g., forward speed and operating …
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Design of Distributed Controllers Over Heterogeneous Networks
… over constrained and noisy links and provide linear matrix inequality (LMI) based procedures. The two forms of constraints considered are the case of limited number of communication links and the case of limited communication power with communication noise. Second, we consider the problem of …
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PREDICTION AND CLOSED-LOOP CONTROL OF BLOOD PRESSURE FOR HEMORRHAGE RESUSCITATION
… setpoint. The controller was designed using linear matrix inequality (LMI) techniques to ensure it was absolutely stable, which let a portion of the hemodynamic plant model remain unspecified and allowed for performance over a range of physiologies. Both strategies were evaluated in-silico on …
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Convex Modeling Techniques for Aircraft Control
… approach. One such design method leads to a linear parameter varying (LPV) controller that changes based on the real-time variation of system dynamics. Before such a controller can be designed, the system has to also be represented as an LPV system. The current effort proposes a LPV modeling …
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INVESTIGATIVE STUDY OF CONTROL DESIGN FOR A CLASS OF NONLINEAR SYSTEMS USING MODIFIED STATE-DEPENDENT DIFFERENTIAL RICCATI EQUATION
… equation (SDRE) plays an important role in nonlinear controller design. For autonomous nonlinear systems that can be expressed in linear form with state-dependent coefficients (SDC), SDRE-based controllers guarantee local asymptotic stability of the closed-loop system, under pointwise …
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Decentralized sliding mode control and estimation for large-scale systems
… sliding mode observers (SMO) theory based on a linear matrix inequality (LMI) approach. A complete theory of decentralized first order sliding mode theory is developed. The main developments proposed in this thesis are: The novel development of an LMI approach to decentralized state feedback …
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Robust de-centralized control and estimation for inter-connected systems
… of distributed control of uncertain non-linear inter-connected systems. The basic principle adopted throughout the work is that the controller has two components, one involving the nominal control with unmatched components including uncertainties and disturbances. The second controller …
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Spatiotemporal systems: gradual variations, identification, adaptation and robustness
… First, we consider the l_infinity stability of linear spatiotemporally varying (LSTV) systems when the underlying controllers are designed based on local linear spatiotemporally invariant (LSTI) approximants. We show that the l_infinity to l_infinity performance of global LSTV systems cannot be …
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Observer-based robust fault estimation for fault-tolerant control
… is made for direct application to smooth non-linear systems via the use of linear parameter-varying systems (LPV) modeling.The main contributions of the research are thus:- The development of a robust observer-based FE method and integration design for the FE and AFTC systems with the bounded …
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Coordinated Control of Inter-area Oscillations using SMA and LMI
… control is through the development of a Linear Matrix Inequality (LMI)-based polytopic model of the system that guarantees pole placement for a variety of operating conditions. The size of the polytopic formulation is an issue for application of LMIs to large systems. The use of Selective …
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Observer based active fault tolerant control of descriptor systems
… state and fault estimation based on a joint linear matrix inequality (LMI) approach to pole-placement and H∞ optimization to minimize the effects of bounded exogenous disturbance and modelling uncertainty. A novel proportional derivative (PD)-ESO is introduced to achieve enhanced estimation …
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Robust Control of Input-Delay Linear Parameter-Varying (LPV) Systems
Practical systems are nonlinear and time-varying and thus linear techniques can expose their control design to extra conservatism. Nevertheless, the Linear Parameter-Varying (LPV) representation can effectively describe them, which in contrast to linearization, maintains the principal dynamic modes …
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Robustification in Repetitive and Iterative Learning Control
… existing methods of robustification, such as Linear Matrix Inequality (LMI), mu-synthesis and H-infinity, but few of these methods offer intuitive information about how the stability robustness is achieved. In addition, many of these existing algorithms produce conservative stability …
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Simultaneous Power and Signal Transfer via Capacitive Coupling
… loss analyses. Based on mutual capacitance matrix modelling, the expression of maximum output power among possible configurations is derived. Coupler loss is categorised into innate loss and region loss, which are linked to coupler materials and leakage currents, respectively. It is found …
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Reliable control of surgical robots and stabilization of long short-term memory neural networks
… form whereas the other is obtained through linear matrix inequality (LMI) based computation. Since these conditions are formulated in terms of the networks' weight matrices and biases that are essentially control variables, the same conditions can be viewed as a way to globally …
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Time-delay systems : stability, sliding mode control and state estimation
… (L-K) method, in conjunction with the Linear Matrix Inequality (LMI) techniques is mainly used for analysis and design. Firstly, a brief survey on recent developments of the L-K method for stability analysis, discrete-time sliding mode control design and linear functional observer …
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Robust Control for Inter-area Oscillations
… on system stability, it is possible to use Linear Matrix Inequalities (LMIs) to design a multi-objective state feedback. The LMI optimization finds a control law that stabilizes several contingencies simultaneously using a polytopic model of the system. However, the number of cases to be …