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 19 of 19 for “"Linear feedback control"”.
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Analytical Design of Linear Feedback Control Systems
Made available in DSpace on 2014-12-04T21:03:26Z (GMT). No. of bitstreams: 1 6202914.pdf: 3624066 bytes, checksum: 7d677605d9e63176001cb188491d882f (MD5) Previous issue date: 1962
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Transient Response of Pseudo-Linear Feedback Control Systems
Made available in DSpace on 2014-12-04T21:02:53Z (GMT). No. of bitstreams: 1 0018162.pdf: 2921892 bytes, checksum: ecf293c8f12695162f5f4539dbfe4699 (MD5) Previous issue date: 1956
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Optimal Linear Feedback Control for Incompressible Fluid Flow
Linear feedback control is considered for large systems of differential algebraic equations arising from discretization of saddle point problems. Necessary conditions are derived by applying the Maximum Principle and have the form of constrained Riccati equations. We consider two approaches for …
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Actuator selection and placement for linear feedback control of compressible flows
Actuator and sensor placement for active control of high-Reynolds number flows is largely based on experience and trial-and-error because of the system’s large dimensionality and complexity. A novel strategy for estimating how to select and place a linear feedback control system using co-located …
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Computer simulation of a large-scale non-linear feedback control system
… Antenna Compensation Network. This network is a feedback control system that filters out the effects of surface ship motion on a weapon's response to commands from the ship's fire control center. The network includes a number of non-standard elements that prevent mathematical prediction of its …
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Reducing noise from supersonic jets using linear feedback control informed by resolvent analysis
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Modeling a natural resource problem using an optimal linear feedback control: an application in the petroleum industry
Includes bibliographical references (pages 81-83).
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On the robust stabilization of a linear time-varying uncertain system
In recent years the problem of designing a feedback control law to stabilize a linear, time-varying uncertain system has received considerable attention. However, the problem is usually limited to the case of systems which satisfy the "matching" assumptions. Moreover, the question of the existence …
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Drag considerations for flight in atmospheric turbulence
… is determined. Furthermore, a classic set of non-linear equations of motion for longitudinal flight is reduced to a set of linear equations by linearization. The location of the CG of the aircraft is then changed and a linear feedback control law is used to retain the dynamic characteristic …
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Networked Predictive Control Systems: Control Scheme and Robust Stability
Networked predictive control is a new research method for Networked Control Systems (NCS), which is able to handle network-induced problems such as time-delay, data dropouts, packets disorders, etc. while stabilizing the closed-loop system. This work is an extension and complement of networked …
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Application of a model of cerebellar function to the maintenance of human upright posture
In this thesis a simple human postural control model is suggested and analyzed based on hypothesized neurophysiology of the cerebellar function and the musculoskeletal system. The cerebellum model is made up of simple linear filters such as differentiator and integrator. The simple linear filters …
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Sensitivity Analysis of Partial Differential Equations With Applications to Fluid Flow
… in fluid flows by analyzing the spectrum of the linearized Navier-Stokes equations. However, for many simple flows, this approach has failed to match experimental results. Recently, new scenarios for transition have been proposed that are based on the non-normality of the linearized operator. …
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Dissertation review on a new control perspective on phase locked loops
… system. PLL is traditionally viewed as a non-linear feedback control loop that will automatically locks the adjustable frequency of a local oscillator in reference to the incoming signal. However, the classic PLL technique has reviewed its first sign of weakness, limited convergence …
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Optimal Boundary and Distributed Controls for the Velocity Tracking Problem for Navier-Stokes Flows
… a desired target flow with a flow which can be controlled through time dependent distributed forces or time dependent boundary conditions. The flow model is the Navier-Stokes equations for a viscous incompressible fluid and different kinds of controls are studied. Optimal distributed and …
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Modeling and control of evolving, noisy chaotic dynamical systems
We study the modeling and control of evolving dynamical systems. In particular we model the dynamics of an evolving noisy iterative map, we study the extraction of the control parameter of the same map using a sparse time series from it, and we also study the dynamics of an evolving electronic …
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Design of a Robotic Equine Forelimb for Testing Load-Bearing Rehabilitative Devices
… evaluate the function of the robotic replica, a control system was developed to reproduce observed gait characteristics. Comparison of the computer-simulated gait with the observed gait showed that a linear feedback control algorithm resulted in a response adequate for the proposed function. The …
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Modeling the Sit-to-Stand Transition using Koopman Lifting Linearization and Human State Estimation
… capture the multi-phase nature of STS, lifting linearization, a dynamic modeling methodology inspired by Koopman operator theory, to subsume segmented local dynamics in a globally linear dynamic model. A novel class of lifting linearization basis functions, termed “State-Membership Product …
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Digital Control of Levitation
… levitation the system is unstable and nonlinear. Two dominant approaches to this problem have been to use a state feedback control system or a simple linear PID compensated control architecture. State feedback is a well-known control technique, but is complicated to implement and can rely …
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Feedback control of complex oscillatory systems
… paper an approach which ensures an efficient control of such diverse systems as noisy or chaotic oscillators and neural ensembles is developed. This approach is implemented by a simple linear feedback loop. The dissertation paper consists of two main parts. One part of the work is dedicated to …