This paper presents a comparative evaluation of power electronic control approaches for vibro-acoustic noise reduction in High Rotor-Pole Switched Reluctance Machines (HR-SRM). It carries out fundamental analysis that can be used to target acoustic and vibration reduction. Based on the comprehensive study, four candidates have been identified applied HR-SRM drive evaluate their effectiveness id...

This paper concerns the analysis of the relationship between the threshing process in an axial flow harvesting machine and its vibro-acoustic behaviour. Several indoor and outdoor measurements are performed in various operational conditions in order to evaluate their influence on the vibration response of the threshing unit. The test results have been used to identify how the vibration and soun...

The presented work discusses the vibration behavior of an axial turbine, analyzed using finite element method (FEM) commercial software ANSYS®. turbine was modeled as a 2-D plate type structure discretized with 4-noded shell 63 elements to save computational time. Constraints were applied keeping in view actual operating conditions. more than one FE meshes. Mesh sensitivity analysis carried out...

OBJECTIVE To evaluate the voice quality of patients with idiopathic Parkinson's disease, at the "on" and "off" moments of the disease. METHOD Five individuals with Parkinson's disease and five of the control group were assessed. All of them underwent the recording of voice and speech. The acoustic parameters analyzed were: fundamental frequency, jitter, shimmer, harmonic noise proportion and ...

the paper investigates into the vibrational characteristics of the truck chassis including the natural frequencies and mode shapes. truck chassis forms the structural backbone of a commercial vehicle. when the truck travels along the road, the truck chassis is excited by dynamic forces caused by the road roughness, engine, transmission and more. modal analysis using finite element method (fem) ...