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 32 for “"Full-State Feedback"”.
-
The implementation of optimal full state feedback using area averaging sensors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
-
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 …
-
Trajectory-Tracking Control of the Ball-and-Plate System
… control architectures are explored, these being Full-State Feedback with Integral Action, Single-Input-Single-Output Sliding Mode, and Full-State Feedback with Feed Forward. The mathematical reasoning behind each is detailed, simulation results are shown to validate their practicality and …
-
Adaptive Control Applied to the Cal Poly Spacecraft Attitude Dynamics Simulator
… Reference Adaptive Control and Adaptive Output Feedback Control. The Spacecraft Attitude Dynamics Simulator is a student-built air bearing spacecraft simulator controlled by four reaction wheels in a pyramidal arrangement. Tests were performed to determine the effectiveness of the two adaptive …
-
Adaptive control of nonlinear systems
… are based on the often unrealistic assumption of full-state feedback.
-
A Disturbance-Rejection Problem for a 2-D Airfoil Exhibiting Flutter
… However, due to unmeasurable aerodynamic-lag states, developing an active control using full-state feedback is not viable. The use of a state-estimator is a more practical way of developing active controllers. In this paper we investigate two control methods using state-estimators. We also use …
-
Neural network identification of quarter-car passive and active suspension systems
… systems based on a quarter-car model with both full-state feedback and incomplete state feedback controllers to optimize the passenger ride comfort, road handling and car controlling. Linear stochastic optimal control will be employed to design an active controller in vehicle active suspension …
-
Modeling and LQR Control of a Two-Dimensional Airfoil
… Regulator (LQR) theory is used to design a state feedback controller. The LQR control scheme consists of using a full state feedback controller of the form u=-Kx, where K is a control gain matrix. The goal is to use LQR theory to supress flutter and to maintain stability of the closed loop …
-
An analytical investigation of passive and active suspension systems for articulated freight vehicles
… ideal active suspension design; (iv) limited-state active suspension design; and (v) assesment of tire dynamic forces transmitted to the pavement. An articulated freight vehicle is characterized by an inplane nine degrees-of-freedom (DOF) dynamic system model. An analytical characterization of …
-
Alternative methods of vertical plasma control in the Alcator C-Mod Tokamak
… and fast power supply. Both PD control laws and full state feedback laws were also compared for performance. A rigid displacement model of the plasma motion was developed that took into account a model of induced currents in the vacuum vessel and coils. The results of the analysis concluded that …
-
Modeling and Feedback Control for a Guyed, Flexible, Tubular Lunar Tower
… mast, which transitions into an erect tubular state. Due to variations in the manufacturing process, an 11 m deployment without stabilization exhibits eccentricity and large tip deflections, causing the payload orientation to deviate from a center, upright position. To control the payload …
-
Design of a Helicopter Slung Vehicle for Actuated Payload Placement
… localization. A first attempt at a linear full state feedback controller with a complementary filter was used to control the vehicle. All of the systems were tested individually for functionality. The shrouded propellers met their design goals and were capable of producing .7lbf of thrust …
-
Adaptive Control Allocation for Unmanned Aerial Vehicles with Model Uncertainties
… the command tracking performance of a classical full state feedback controller, and to show the performance remedy with adaptive control allocation methods. Simulation results are presented to show that the proposed adaptive methods improve command tracking performance in the presence of unknown …
-
Optimal control with structure constraints and its application to the design of passive mechanical systems
Structured control (static output feedback, reduced-order control, and decentralized feedback) is one of the most important open problems in control theory and practice. In this thesis, various techniques for synthesis of structured controllers are surveyed and investigated, including H2 …
-
A comparison study of genetic algorithms in feedback controller design
… genetic algorithms are used to design a two-state feedback optimal gain set for a SDOF SMD model with a given initial condition. An improved selection scheme called the stochastic remainder selection without replacement is introduced. An improved GA-based (IGA) feedback controller is designed …
-
Applied Nonlinear Control of Unmanned Vehicles with Uncertain Dynamics
… input amplitude and rate saturation, or partial state measurements availability. More specifically, an adaptive control framework, allowing to enforce amplitude and rate saturation of the command, is developed. The motion control component of this framework, which works in conjunction with a …
-
Hybrid Active/Passive Models with Frequency Dependent Damping
… size. A linear quadratic regulator and output feedback are used to actively control vibration. The length and placement of treatment is optimized using different criteria. It is shown that placing the active element on the opposite side of the passive element is capable of vibration suppression …
-
Finite Element Modeling and Active Control of an Inflated Torus Using Piezoelectric Devices
… is modeled using Euler-Bernoulli beam theory. A state space representation is created of the model in modal space and modal truncation is performed. Traditional control tools are used to suppress vibration in the structure. First observer-based full state feedback is used, then direct output …
-
Marginal oscillator sensitivity enhancement using full-state nonlinear feedback
… 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). Continuous-wave …
-
Estimation and control with limited information and unreliable feedback
… the minimum number of quantization regions. Both full state feedback and output feedback are considered, as well as nonlinear systems. We further show that our approach remains stable under modeling errors and delays. The main analysis tool we use for proving these results is the nonlinear …
Page 1 of 2