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 16 of 16 for “"Double Pendulum"”.
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DOUBLE PENDULUM CHAOTIC MODEL FOR PSEUDORANDOM NUMBER GENERATION
The double pendulum is a system of two connected masses, one tethered to a point in space and the other tethered to the first mass. The double pendulum exhibits chaotic motion under the influence of an external force such as the gravitational force. The chaotic motion is sensitive to the initial …
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A LIGO Double Pendulum Suspension Prototype for Reducing Unwanted Cross-Couplings
… the effects of changing the wire geometry of a double pendulum as a case study for LIGO pendulum designs. By changing the wire attachment point to be closer to the center of mass, we are able to see a decrease in longitudinal-to- pitch coupling by about a factor of 3. We observe that the …
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Control of a Chaotic Double Pendulum Model for a Ship Mounted Crane
… control scheme is used on a simple double pendulum. The base point of the double pendulum moves in both horizontal and vertical directions which leads to rather complicated behavior.A delay coordinate is used to reconstruct the attractor. The required dimension is determined by the …
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Application of Product Design Concepts and Hybrid System Dynamics to Demonstrate Zeno Behavior and Zeno Periodic Orbits in a Physical Double Pendulum Setup
… ? an anthropomorphic Bipedal walking robot and a Double Pendulum with a mechanical stop. The primary objectives of this project are to demonstrate the phenomena of Zeno and zeno periodic orbits in hybrid dynamic systems involving impacts. Initially, I describe the salient features of the product …
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Dynamic Instabilities in Structures with Nonholonomic Constraints
… theory. Initially, the stability of Ziegler's double pendulum is analyzed to show its interesting dynamic behavior and capability of flutter via a Hopf bifurcation. The main contribution of the thesis is the development of models based on a double pendulum equipped with a non-holonomic …
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Extending the boundary method for solving human motion problems using a 3 dimensional coupled pendulum model
… dynamic equations of motion governing a coupled double pendulum in 3 Dimensions.
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Stability problems in constrained pendulum systems and time-delayed systems
… systems under this class: a constrained double pendulum connected by a rigid rod and a state-feedback-controlled mechanical system with time delay. In the first system, the destabilizing parameter is the distance between the supports of the two pendulums. In the second system, the …
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Anti-swing control of overhead cranes
… crane and the suspended payload are modeled as a double pendulum with motion in three dimensional space. The equations of motion of the overhead crane and the payload are transformed in terms of a single path parameter which represents single degree of motion along the path. The resulting set of …
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Design of sprayer boom suspensions through computer simulation and design optimization
… in this study include: central pivot, simple pendulum, double pendulum, and twin-link. The suspension models derived for this study consisted of two-dimensional roll models for analysis of the vertical movement of the sprayer boom in relation to the input excitation to the suspension system. …
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Design and control of a planar two-link manipulator for educational use
… reconfigured into an acrobot (an underactuated double-pendulum which can be stabilized in a vertical configuration while being actuated only at the middle joint). The governing equations of the system are derived and an analysis of velocity control in the xy plane is perform and a control …
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Deep Multi-Resolution Operator Networks (DMON): Exploring Novel Data-Driven Strategies for Chaotic Inverse Problems
… are evaluated on two chaotic systems, a double pendulum and turbulent flow around a cylinder, with improvements observed under idealized scenarios whereby high and low-resolution inputs are manually paired, along with minor improvements when this pairing is conducted through the proposed …
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Theoretical framework for predicting joint reaction and ground reaction forces in a dynamic pendulum tree model of human motion
… the human body modeled as a general branched 2-D pendulum tree system with arbitrary segments and arbitrarily distributed point masses. A theoretical framework is established for predicting these constraint forces during human motion and consequently their effects on dynamics, dynamic stability, …
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Direct application of the least action principle to solve (human) movement dynamics without using differential equations of motion
… method (DSM) is applied to both the single and double pendulum systems as beginning test problems. The solutions so obtained are compared to numerical solutions of the corresponding Lagrange BOM solved using a first order Euler algorithm for the same mechanical problems. The output path obtained …
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Simulating the EUSO-SPB2 balloon flight train with Lagrangian mechanics
… super pressure balloon flight train as a rigid double pendulum. The simulation model is additionally tested against a wood built small-scale payload with an internal rotating telescope. The small-scale internal telescope is rotated at three different speeds and the motion of the payload is …
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Optimal state estimation for a power line inspection robot
… The brachiation mechanism was approximated to a double pendulum and kinematics based Kalman filter was designed. Simulations of EKF and UKF were made. The EKF is still recommended as its estimates are closer to the true values and its computation time is about five times faster.
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Reduced-order Adaptive Output Predictor for a Class of Uncertain Dynamical Systems: Application to EEG-Based Control of Working Memory
… and experimental studies, such as single pendulum, double pendulum, six-link pendulum, rope as a high-dimensional rope, and EEG data. Then the dissertation goal is to experimentally validate the proposed reduced-order model parameterization technique for tracking uncertain linear …