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.
Results
Showing 1 to 20 of 124 for “"linear time-invariant"”.
-
Linear-time invariant Positive Systems: Stabilization and the Servomechanism Problem
… conditions for the stabilization of positive linear time-invariant (LTI) systems using state feedback control, along with providing an algorithm for constructing such a stabilizing regulator. Moreover, the results on stabilization also encompass the two problems of the positive separation …
-
Nonlinear Programming and Multiparameter Sensitivity in Linear Time-Invariant Networks
Made available in DSpace on 2014-12-08T22:24:00Z (GMT). No. of bitstreams: 1 6612360.pdf: 1707781 bytes, checksum: 8526ab5a18aba82f6e81465b1d9e6559 (MD5) Previous issue date: 1966
-
Robust stabilization of linear time-invariant uncertain systems via Lyapunov theory
… a robust stabilizing feedback controller for linear time-invariant systems with constant uncertainties that are not required to satisfy matching conditions. Only the bounds on the uncertainties are required and no statistical property of the uncertainties is assumed. The systems under …
-
Wavelets Based on Second Order Linear Time Invariant Systems, Theory and Applications
… from the response of Second Order Underdamped Linear-Time-Invariant (SOULTI) systems, while the second is a generalization of the first to the complex domain and is similar to the Laplace transform kernel function. The first takes the acronym of SOULTI wavelet, while the second is named the …
-
On the synthesis of switched output feedback controllers for linear, time-invariant systems
… method of designing switching controllers for linear, time-invariant (LTI) systems is to first design a set of stabilizing LTI controllers using standard LTI methods, and then design a switching law to increase performance. While such design algorithms can lead to increases in performance, they …
-
Numerical solutions of matrix equations arising in model reduction of large-scale linear -time -invariant systems
… matrix equations arising from model reduction of linear-time-invariant (LTI) systems. Such systems arise in a variety of areas, especially in circuit simulation. When an integrated circuit has millions of devices, performing a full-system simulation can be infeasible due to the time required for …
-
Chained Aggregation and Control System Design: A Geometric Approach
… Generalized Hessenberg Representation (GHR) of a linear time-invariant control system. It is shown that the GHR explicitly exhibits a sequence of observability subspaces, { (,i)}. By studying these subspaces in this specific basis, a number of results follow.
-
Model Reduction Using Semidefinite Programming
In this thesis model reduction methods for linear time invariant systems are investigated. The reduced models are computed using semidefinite programming. Two ways of imposing the stability constraint are considered. However, both approaches add a positivity constraint to the program. The input to …
-
Reliable control of decentralized systems: An ARE-based H(infinity) approach
… thesis presents a new method of decentralized linear, time-invariant control system synthesis based on the algebraic Riccati equation (ARE). The basic decentralized design guarantees closed-loop stability and a predetermined level of worst-case disturbance attenuation. Certain modifications of …
-
Adaptive Robust Control
… families of plant models for which robust linear time-invariant controllers can be readily designed. We then implement a convex combination of these controllers, the parameters of which are tuned based on error measurements. Using this approach, we are able to provide absolute bounds on the …
-
Lab experiences for teaching undergraduate dynamics
… experiments that illustrate the dynamics of linear time-invariant (LTI) systems and (2) a two wheeled mobile inverted pendulum. The ActivLab equipment has been designed as shareware, and plans for it are available on the web. The inverted pendulum robot developed here is largely inspired by …
-
Frequency domain model-based intracranial pressure estimation
… to ICP estimation using a simple lumped, linear time-invariant model of cerebrovascular dynamics. Preliminary results from 28 records of patients with severe traumatic brain injury are presented and discussed. Suggestions for future work to improve the estimation algorithm are proposed.
-
Robust low-order control of flexible joint manipulators
This thesis presents the application of novel linear time invariant techniques to the design of low-order controllers for flexible joint manipulators. The nonlinear manipulator model is linearized via the perturbation method about an unstable operating point. Some nonlinear terms are treated as an …
-
Multivariable control of a flotation plant simulator
… of the multivariable controllers was based on a linear time invariant model (in s-domain) developed for the simulator. The two frequency domain techniques, Characteristic Loci (CL) and Inverse Nyquist Array (INA), were implemented in the form of CAD packages. The INA CAD package had already been …
-
System Identification via the Proper Orthogonal Decomposition
… application to large, complex structures can be time-consuming and errors in the modeling process may negatively affect the accuracy of analyses based on the model. System identification techniques attempt to circumvent these problems by using experimental response data to characterize or …
-
Topological entropy bounds for switched linear systems with lie structure
… into bounds for topological entropy of switched linear systems. Entropy measures, roughly, the information needed to describe the behavior of a system with finite precision on finite time horizons, in the limit. After working out entropy computations in detail for the scalar switched case, we …
-
Optimal control of dynamical systems with time-invariant probabilistic parametric uncertainties
… model identification software that produces time-invariant parameter uncertainties typically in the form of probability distribution functions. This doctoral thesis derives rigorous theory and algorithms for the optimal control of dynamical systems with time-invariant probabilistic …
-
Nonlinear and Hybrid Feedbacks with Continuous-Time Linear Systems
In this thesis we study linear time-invariant systems feedback interconnected with three specific nonlinear blocks; a play/stop operator, a switching-reset mechanism, and an adaptive dead-zone. This setup resembles the Lure problem studied in the absolute stability framework, but the types of …
Page 1 of 7