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 51 for “"Feedback Linearization"”.
-
Robustness studies of the feedback linearization method
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
-
Feedback linearization and adaptive control of a nonlinear aeroelastic system
… the aeroelastic system is not input-state feedback linearizable, a partial linearized representation of the system in dimension three can be obtained. Based on this partially linearized representation, a new inverse controller was derived and simulation results show that control of pitch …
-
Fault tolerant control for nonlinear aircraft based on feedback linearization
… Considering initially fault-free flight, the feedback linearization theory plays an important role to provide a baseline control approach for de-coupling and stabilizing a non-linear statically unstable aircraft system. Then several reconfigurable control strategies are studied to provide …
-
Stability robustness to unstructured uncertainty for nonlinear systems under feedback linearization
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
-
Design and Development of a High-Performance Quadrotor Control Architecture Based on Feedback Linearization
… C++ program for increased performance. A feedback linearization of the quadrotor's dynamics was performed to account for its nonlinearities. A controller structure designed to ensure exponential Lyapunov stability was applied to the input-output linearized dynamics. The simplex method was …
-
Feedback linearization of nonminimum phase systems and control of aeroelastic systems and undersea vehicles
The thesis presents the design of feedback control systems for a class of nonminimum phase single input-single output nonlinear systems. The linearized system is assumed to have one unstable zero. Since asymptotic or exact tracking of output trajectory cannot be accomplished, an approximate output …
-
Feedback linearization, invertibility of map, zero dynamics, and nonlinear control of the space station
Based on feedback linearization and ultimate boundedness theory, a new approach to attitude control of the space station using control moment gyros (CMG's) is presented. A linearizing transformation is derived to obtain a simple linear representation of the nonlinear pitch axis dynamics. A feedback …
-
Transitions Between Hover and Level Flight for a Tailsitter UAV
… are described: a simple controller, a feedback linearization controller, and an adaptive controller. An autopilot navigational state machine with appropriate transitioning between level and hover waypoints is also presented. The simple controller is useful for performing a immediate …
-
Nonlinear Analysis and Control of Aeroelastic Systems
… LCOs in aeroelastic systems and develop state feedback controllers to suppress them. The research results are demonstrated on a two degree of freedom airfoil section model with stiffness nonlinearity. Three different approaches are developed and discussed. The first approach uses a feedback …
-
Spline based controller for nonlinear systems
… controller signals are compared with the exact feedback linearizaton method.;The first objective for power systems is to design nonlinear excitation controllers for a multi-machine power system using Direct Feedback Linearization. The designed controllers, whose parameters are obtained, require …
-
Bandwidth-limited robust nonlinear spacecraft control
… problem, which can be resolved by exact feedback linearization with respect to attitude variables. This requires exact measurements and perfect model parameters. However, spacecraft maneuvers in uncertain circumstances. Thus robust control is required.
-
Nonlinear Controller Design and Implementation for a Magnetic Levitation System
… ANN based techniques have been compared with a feedback linearization approach. The control algorithms have been developed and implemented on a hardware-in-the-loop (HIL) system of magnetic levitation in LabVIEW environment. The ANN based controllers performed very well and much better than the …
-
Development of Fault Tolerant Adaptive Control Laws for Aerospace Systems
… that do not attain large angles and use exact feedback linearization of Euler angle kinematics. A proof of stability is presented by means of the circle Criterion and Lyapunov’s direct method. The second approach is intended for aerospace systems that can attain large attitude angles (e.g. …
-
Mechatronics examples for teaching modeling, dynamics, and control
… this classic nonlinear controls problem with feedback linearization; the main advantage with this technique is operating point independency. However, it is highly sensitive to modeling errors and unpredicted plant behavior. We overcome these barriers by using a model based on both theory and …
-
Robust decentralized control of power systems through excitation systems and thyristor controlled series capacitors
… excitation control is developed based on a feedback linearization technique. Feedback linearization technique is applied in excitation control of each generator to obtain an interconnected system where subsystems have linear system matrices and interconnections are represented by nonlinear …
-
Integration of potential field theory and proportional navigation theory to autonomously guide an unmanned aerial vehicle.
… style UAV is developed and controlled using feedback linearization. A simulator is built for deploying a number of environments and taking performance measurements. Aspects of the hardware implementation are introduced.
-
Design and implementation of control system for magnetic suspension device
… of two nonlinear controls techniques: linearization of the plant around an operating point, and feedback linearization. A combination of electromagnetic theory and experimentation was used to model the suspension actuator, and two different controllers were designed and implemented …
-
Adaptive swing-up and balancing control of acrobot systems
… dynamics. Swing up is accomplished using partial feedback linearization and a pump up strategy to add energy to the system. The controller then catches the swung up system in the basin of attraction of an LQR controller computed using the estimated parameter values generated from online system …
-
RF power amplifier linearity compensation for MRI systems
In this thesis, a polar-feedback linearization system for use with MRI RF power amplifiers was designed and simulated. The design here presented is intended to replace Analogic's (located in Peabody, Massachusetts) feed-forward, digital linearization scheme. This involved the selection and testing …
-
Development of a Research Spacecraft Test-Bed with Implementation of Control Laws to Compensate Undesired Dynamics
… control architecture based on quaternion feedback linearization is also described, and performance analysis in the compensation of undesired dynamics is presented. The results show the capabilities and potential of EASY to simulate missions that require validation and verification …
Page 1 of 3