Abstract To improve the efficiency of wireless power transfer (WPT) systems, this paper proposes a bilateral perturbation and observation method for WPT systems based on resonant modular three-level topology. This uses duty cycle rectifier to control output voltage, optimizes reactive in primary secondary sides by disturbing phase difference between input voltage current rectifier, achieves imp...

Atmospheric perturbation is certainly the most important degradation when observing a scene horizontally at a distance of several kilometers. Because such images with short time exposure are expensive to obtain, they have to be simulated. The goal of this paper is to adapt simulation and restoration of images perturbated by atmospheric turbulence to the case of horizontal ground observation at ...

objectives: to check and compare the effectiveness of modified agility and perturbation training over conventional physical therapy in patients with knee osteoarthritis. methods: subjects were screened on the basis of inclusion and exclusion criteria and a total of 50 subjects were recruited for the study. they were randomly divided into group a and group b with n=25 each. results: group receiv...

A theoretical study analyzing three-dimensional combustion acoustic instabilities in a liquid propellant rocket engine combustor has been conducted. A linear theory based on Crocco’s pressure sensitive time lag model is used. To apply this theory the combustor is divided into two main components, including the combustion chamber and the converging part of the nozzle. The assumption of concentra...