Global ETD Search
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Showing 1 to 7 of 7 for “"Delayed-position feedback"”.
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Control of Rotary Cranes Using Fuzzy Logic and Time-Delayed Position Feedback Control
… of controllers are studied: fuzzy logic and time-delayed position feedback controllers. The fuzzy logic controller is introduced first with the idea of split-horizon; that is, to use some fuzzy engines for tracking position and others for damping load oscillations. Then the time-delayed position …
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Adaptation of Delayed Position Feedback to the Reduction of Sway of Container Cranes
… this work, we will extend the recently developed delayed position feedback controller to container cranes. In contrast with traditional work, which models a crane as a simple pendulum consisting of a hoisting cable and a lumped mass at its end, we have modeled the crane as a four-bar mechanism. …
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Local and Global Stability and Dynamics of a Class of Nonlinear Time-Delayed One-Degree-of-Freedom Systems
… the dynamics and stability of nonlinear time-delayed one-degree-of-freedom systems possessing quadratic and cubic nonlinearities and subjected to external and parametric disturbances. Due to the time-delay terms, the trivial solution of the unforced system undergoes Hopf bifurcations. We use …
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Cargo Pendulation Reduction on Ship-Mounted Cranes
… to model the system. A control law using time-delayed position feedback is developed and the system is simulated on a computer using the full nonlinear equations of motion. A three-degree-of-freedom ship-motion simulation platform, capable of simulating heave, pitch, and roll motions, was …
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Virtual Reality Simulation of Ships and Ship-Mounted Cranes
… ship is taken into consideration. A nonlinear delayed-position feedback-control system is applied to the crane and the resulting simulation is used to compare the controlled and uncontrolled pendulations of the cargo. Our simulator showed a great deal of realism and was used to simulate …
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A Control System for the Reduction of Cargo Pendulation of Ship-Mounted Cranes
… The successful control strategy is based on delayed-position feedback of the cargo motion in-plane and out-of-plane of the boom and crane tower. Its effectiveness is demonstrated with a fully nonlinear three-dimensional computer simulation and with an experiment on a 1/24 scale model of a …
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Adaptation of Nontraditional Control Techniques to Nonlinear Micro and Macro Mechanical Systems
… operations, we develop a closed-loop nonlinear delayed-position feedback controller. Key features of this controller are that it: does not require major modifications to the existing crane structure, accounts for motion inversion delays, rejects external disturbances, and is superimposed on the …