A5028998019- Dynamics and Control of Mechanical Systems
- Mechanical Engineering and Vibrations Research
- Robotic Mechanisms and Dynamics
- Structural Analysis and Optimization
- Iterative Learning Control Systems
- Magnetic Bearings and Levitation Dynamics
- Adhesion, Friction, and Surface Interactions
- Vibration and Dynamic Analysis
- Neutrino Physics Research
- Composite Structure Analysis and Optimization
- Particle accelerators and beam dynamics
- Nanofabrication and Lithography Techniques
- Particle physics theoretical and experimental studies
- Muon and positron interactions and applications
- Mechanical stress and fatigue analysis
- Aeroelasticity and Vibration Control
- Advanced Surface Polishing Techniques
- Experimental and Theoretical Physics Studies
- Gear and Bearing Dynamics Analysis
- Magnetic Properties and Applications
- Control and Dynamics of Mobile Robots
- Metal and Thin Film Mechanics
- Electric Motor Design and Analysis
- Orbital Angular Momentum in Optics
- Structural Health Monitoring Techniques
National Tsing Hua University
2007-2023
Ulsan National Institute of Science and Technology
2017-2023
National Institute for Subatomic Physics
2023
Radboud University Nijmegen
2023
Information and Communication Technologies Centre
2009
Commonwealth Scientific and Industrial Research Organisation
2009
Michigan State University
1984-1987
This paper presents an analytical and experimental study on the elastodynamic analysis control of flexible linkages mechanisms using piezoceramic sensors actuators. A mixed variational principle is developed to provide basis for deriving finite element equations which govern dynamic responses links, behavior piezoelectric materials their coupling relationships, while being subjected both mechanical electric boundary conditions. The devices featuring characteristics smart capable sensing...
A methodology for suppressing the elastodynamic responses of high-speed flexible linkage mechanisms by employing a state feedback optimal control scheme is proposed. This permits to be subjected controlled dynamic inputs generated several pairs suitably-selected piezoelectric ceramics while additional piezoceramics are utilized as sensing devices. includes law and Luenberger observer. The instabilities caused combined effect observation spillover investigated carefully prevented. Finally,...
The operating speed and endpoint positional accuracy of existing industrial manipulators are limited by the inertial stiffness characteristics articulating members robot’s mechanical linkage. This limitation may be overcome developing having high structural strength with low mass, this has been recognized for some time. These can obtained fabricating moving in fiber-reinforced composite materials. In order to establish a basis dynamic analysis robots fabricated viscoelastic composites,...
A variational formulation is presented for the nonlinear finite element analysis of general planar mechanisms comprising assemblages elastic bodies connected by revolute or sliding joints. geometrically theory developed to describe behavior in axial and flexural modes, model dynamical includes inertial coupling terms linking rigid-body kinematic motions. The herein employed predict elastodynamic response experimental four bar linkages slider crank mechanisms.
Adaptive modulation and coding (AMC) is a powerful technique to enhance the link performance by adjusting transmission power, channel rates levels according state information. In order efficiently utilize AMC scheme, an accurate signal-to-noise ratio (SNR) value normally required for determining level. this paper, we propose simple method represent SNR values maximum likelihood (ML) detector in multi-input multi-output (MIMO) systems. By analyzing relation between upper bound lower of ML...
This paper presents a methodology for designing piezoelectric sensors/actuators in an application to monitor/generate flexural and torsional vibrations of cylindrical shells. Based upon the classical laminate theory equations electro-mechanical interactions, constitutive, strain-displacement relations composite shells are derived. With these sensor actuator shell then developed. The modal fabricated with PVDF embedded capable monitoring generating particular mode or several combined modes...
The task of designing symmetric laminated beams with optimal stiffness and damping is considered by incorporating the model Adams, et al. into an optimization algorithm. design variables are fiber orientation in each ply, stacking se quence, also thickness ply laminate. A recursive quadratic program ming algorithm employed for process numerical results presented several test problems including constraint condition invariable flexural rigidity.
The fabrication of lightweight robot arms in composite mate rials and the ability robotic devices to dissipate residual vibrations at termination a maneuver have both been highlighted as key research problems recent report pub lished by U.S. Congress, Office Technology Assess ment. Both are addressed here. We develop method for optimally configuring geometry rial parameters hollow box members robo tic manipulators constructed with laminates. do it integrating formulation laminated beams...
This work employs a metal direct imprinting process, which possesses the characteristics of simplicity, low-cost and high resolution, for fabrication subwavelength structures on metallic thin film. Herein, mould featuring periodic line is manufactured by using E-beam lithography followed dry etching process; meanwhile, film fabricated sputtering Al silicon substrate. AFM section analyses are employed to measure depths it found that uniformity affected designed patterns, material property...
Hula-hoop motion refers to the spinning of a ring around human body; it is made possible by interactive force between moving and body. Inspired generic concept hula-hoop motion, this study proposes novel transformer design that consists main mass sprung in one translational direction free-moving attached at end rod, other which hinged onto center mass. It expected capable transforming linear reciprocating into rotational motion. In addition, could be integrated with coils, magnets, electric...
This paper introduces a new approach to measure the muon magnetic moment anomaly $a_{\mu} = (g-2)/2$, and electric dipole (EDM) $d_{\mu}$ at J-PARC facility. The goal of our experiment is $a_{\mu}$ using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing $g-2$ experiments unprecedented quality storage field. Additional significant differences from present experimental include 1,000 transverse emittance beam (reaccelerated...
High-brightness muon beams of energy comparable to those produced by state-of-the-art electron, proton and ion accelerators have yet be realised. Such the potential carry search for new phenomena in lepton-antilepton collisions extremely high also provide uniquely well-characterised neutrino beams. A beam may created through decay pions interaction a with target. To produce high-brightness from such source requires that phase space volume occupied muons reduced (cooled). Ionization cooling...
This paper presents a theoretical and experimental study on the vibration suppression of elastodynamic response high-speed flexible linkage mechanisms by incorporating smart materials featuring piezoceramic actuators sensors into mech anism systems. A mixed variational principle is developed to provide basis for deri vation finite element equations governing dynamic responses links, behaviors piezoelectric their coupling relationships. The mathematical models are then employed in analysis...