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 39 for “"Nonlinear Feedback"”.
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Nonlinear feedback control of continuum systems.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1972. Sc.D.
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Nonlinear Feedback and Stochastic Control in Translation
… its lifetime. Next, we investigate auto-negative feedback on translation initiation and its substantial impact on controlling protein level in a cell. Finally, we incorporate ribosome recycling into the auto-negative feedback control. Novel results such as oscillation and bistable switching in …
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A Mathematical Analysis of Nonlinear Feedback Amplifiers
Made available in DSpace on 2014-12-04T21:02:53Z (GMT). No. of bitstreams: 1 0018164.pdf: 2841593 bytes, checksum: 010c976003d03a27e124db7b79773df5 (MD5) Previous issue date: 1956
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Nonlinear Feedback Control Systems With Sampled-Data
Made available in DSpace on 2014-12-04T21:02:59Z (GMT). No. of bitstreams: 1 5801717.pdf: 12084453 bytes, checksum: c44d8007fe1bf286e0e96df8d616ef4d (MD5) Previous issue date: 1958
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Optimal nonlinear feedback control of spacecraft attitude maneuvers
Polynomial feedback controls are developed for large angle, nonlinear spacecraft attitude maneuvers. Scalar and two-state systems are presented as simple examples to demonstrate the method, and several systems of state variables to parameterize spacecraft motion are considered. Both external and …
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Marginal oscillator sensitivity enhancement using full-state nonlinear feedback
A marginal oscillator is a tank circuit with nonlinear output feedback applied to maximize the change in amplitude with respect to the circuit's internal resistance. Although used in many applications, the marginal oscillator is most commonly used in continuous wave magnetic resonance (CW-MR). …
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Sinusoidal Analysis of Hysteresis Effects in Nonlinear Feedback Control Systems
Made available in DSpace on 2014-12-04T21:03:19Z (GMT). No. of bitstreams: 1 6101616.pdf: 3194447 bytes, checksum: c94460df6b6e5d7cd7c5f3c3ec50f14e (MD5) Previous issue date: 1961
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Nonlinear feedback solution for minimum-time intercept with constant thrust acceleration.
Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Thesis. 1966. M.S.
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Time-Lag in a Nonlinear Feedback System With a Time-Varying Parameter
Made available in DSpace on 2014-12-04T21:03:29Z (GMT). No. of bitstreams: 1 6202982.pdf: 3864258 bytes, checksum: 393fac0a3cda813ebaeeea20df8e3338 (MD5) Previous issue date: 1962
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Optimization based nonlinear feedback control for pedestrian evacuation from a network of corridors
… associated with the uncontrolled flow, the feedback control schemes are developed. An optimization-based approach is proposed for designing the feedback control. The control scheme is designed to ensure that the flow states continuously track a certain optimal state and that a certain …
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Optimal Open Loop and Nonlinear Feedback Control for Remote Orbital Capture (multi-Body Dynamics, Recovery, Satellite Servicing, Payload Handling)
Optimal open loop and nonlinear feedback control histories are presented for the problem of detumbling (passivating) a target satellite by a remotely operated robot spacecraft. Detumbling is required so that the robot spacecraft, sometimes called a teleoperator or orbital maneuvering vehicle (OMV), …
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Time optimal control for asymptotic tracking of linear systems with input saturation
… with input saturation, and design composite nonlinear feedback controllers. We have explored the problem of asymptotic time optimal tracking for a class of linear system with actuator nonlinearities. A formula on the optimal settling time is given and the corresponding composite nonlinear …
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Feedback design for nonlinear distributed-parameter systems by extended linearization
A feedback design procedure known as extended linearization consists in replacing a mathematical model of a nonlinear dynamical system with its family of linearizations, parametrized by the operating point, and then combining feedback gains designed for representatives of the family into a single …
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Computation of Lyapunov Exponents and Control of a Hyperchaotic System
… stablize the hyperchaotic Chen system via linear feedback, speed feedback and nonlinear feedback control and a stability analysis is presented.</p>
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Fast half-loop maneuvers for the F/A-18 fighter aircraft using a singular perturbation feedback control law
The primary purpose of this study is to develop a nonlinear feedback control law for the F / A-I8 fighter aircraft that performs a fast half-loop maneuver. This feedback law is developed using a singular perturbation approach. A secondary purpose of this study is to establish a baseline for time …
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Magnetic Stabilization of Nadir-Pointing Small Satellites
… In this thesis we present averaging-based feedback control laws that achieve three-axis stabilized nadir-pointing attitude. Two types of nonlinear feedback control laws are proposed: full-state feedback and passivity-based feedback. Full-state feedback uses the attitude and angular velocity …
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Modeling and Slew-Maneuver Control of a Flexible Spacecraft
… to which a long flexible appendage is attached. Nonlinear dynamical system models are developed using both distributed parameter modeling and discrete parameter modeling; these models are shown to be equivalent for appropriately chosen system parameters. Lyapunov-based nonlinear feedback …
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Studies on hybrid optical bistable devices using an acousto-optic modulator
… including both acousto-optic diffraction and a nonlinear feedback path is studied in this thesis. Theoretical results based on diffraction involving two and four diffracted orders have been obtained and compared. Experimental results confirm the validity of the theoretical model. The principle …
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Spacecraft Attitude Tracking Control
… during the tracking maneuver. We develop a nonlinear feedback tracking control law, derived from Lyapunov stability and control theory, to provide the control torques for target tracking. The controller makes the body frame asymptotically track the reference motion when there are initial …
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