This paper presents a novel controller built to exploit the physical behaviour of a simple dynamical system, namely a spinning wheel. The phenomenon of gyroscopic precession causes the instrument to slowly oscillate when it is spun quickly, providing the performer with proprioceptive feedback. Also, due to the mass of the wheel and tire and the resulting rotational inertia, it maintains a relat...

This paper presents a novel controller built to exploit the physical behaviour of a simple dynamic system, namely a spinning wheel. The phenomenon of gyroscopic precession causes the instrument to slowly oscillate when it is spun quickly, providing the performer with proprioceptive feedback. Also, due to the mass of the wheel and tire and the resulting rotational inertia, it maintains a relativ...

To enable a quantification of net joint moments and joint reaction forces, indicators of joint loading, this study aimed to locate the mediolateral joint axes of rotation and establish the body segment parameters of the limbs of pigs (Sus scrofa). To locate the joint axes of rotation the scapulohumeral, humeroradial, carpal complex, metacarpophalangeal, coxofemoral, femorotibial, tarsal, and me...

This paper proposes a mathematical model of a CNC rotary table driven by a worm gear. The CNC rotary tables are generally utilized as rotary axes of 5-axis machining centres. In this study, a mathematical model which can simulate dynamic behaviours of rotary table is proposed. The model consists of inertia of motor, spur and worm gears, and table. Axial displacement of the worm is also consider...

This paper derives the analytic solution of nonlinear H∞ robust controller for a system with mass and moments of inertia uncertainties and investigates the implementation using control surface inverse algorithm. A special Lyapunov function with mass and moments of inertia uncertainties is introduced to solve the associated Hamilton-Jacobi partial differential inequality (HJPDI). The HJPDI is so...

A parameter free investigation of the moments of inertia of ground state rotational bands in well deformed rare-earth nuclei is carried out using Cranked Relativistic Hartree-Bogoliubov (CRHB) and non-relativistic Cranked Hartree-Fock-Bogoliubov (CHFB) theories. In CRHB theory, the relativistic fields are determined by the non-linear Lagrangian with the NL1 force and the pairing interaction by ...

In this paper we develop an efficient numerical method for the finite-element model updating of damped gyroscopic systems based on incomplete complex modal measured data. It is assumed that the analytical mass and stiffness matrices are correct and only the damping and gyroscopic matrices need to be updated. By solving a constrained optimization problem, the optimal corrected symmetric damping ...

The rotational band structure of the Z=104 nucleus (256)Rf has been observed up to a tentative spin of 20ℏ using state-of-the-art γ-ray spectroscopic techniques. This represents the first such measurement in a superheavy nucleus whose stability is entirely derived from the shell-correction energy. The observed rotational properties are compared to those of neighboring nuclei and it is shown tha...

Whereas edge-based stereo has traditionally received a lot of attention, relatively few explicit region-based 3D reconstruction techniques have been developed, despite the significant advantages such global features present for representing indoor or urban environments. We propose a general framework for 3D reconstruction of planar patches from stereoscopic pairs of images, and explicit a gener...

We study the Hamiltonian mean field (HMF) model of coupled Hamiltonian rotors with a heterogeneous distribution of moments of inertia and coupling strengths. We show that when the parameters of the rotors are heterogeneous, finite-size fluctuations can greatly modify the coupling strength at which the incoherent state loses stability by inducing correlations between the momenta and parameters o...