Descripción del proyecto
Vehículos eléctricos y electrodomésticos más silenciosos
Los estudios muestran una repercusión negativa y directa de los altos niveles de ruido sobre los niveles de la hormona del estrés o, incluso, en nuestra salud cardiovascular. Para los usuarios potenciales resulta fundamental reducir el ruido (así como las vibraciones, las cuales constituyen su causa principal) en los elementos de una máquina. Actualmente, se ha logrado reducir las vibraciones mediante ensayos modales de las propiedades dinámicas de las máquinas, a través del estímulo preciso de la banda ancha. Sin embargo, los estimuladores que se utilizan no se pueden aplicar en las piezas móviles. El proyecto ProExcer, financiado con fondos europeos, tiene como objetivo experimentar con la aplicación prototipo de una innovadora pistola de bolas que se pondrá a prueba para que se pueda ajustar de forma precisa, a fin de estimular los ejes de los centros de mecanizado mediante los impactos de las bolas. Los fabricantes de electrodomésticos y coches eléctricos o autónomos agradecerán los resultados positivos.
Objetivo
Noise is not just a nuisance; it affects our health. No accepted financial data exist for the treatment costs of noise-related health problems, but several studies prove its direct relation to stress hormone levels or cardiovascular deceases, and many public organizations promote low-noise environment to protect health and comfort. Noise reduction has become major field of manufacturers’ competition: noise level data appear on domestic machines from mixers to dishwashers, brand names with ‘whisper’ or ‘silence’ are popular, aircrafts are successful due to their low noise levels. The efficient way to reduce noise is the elimination of its source that is usually vibration of some machine elements. Vibration elimination is relevant in the development of electric and self-driving cars where control panels and MEMS devices are sensitive for high-frequency excitations in the same way as high-performance machine tools are with aims at (sub)micron cutting precision.
Methods of vibration reduction are based on the so-called modal testing that identifies the machines’ dynamic properties like natural frequencies. The test requires accurate broadband excitation. Commercial exciters have several drawbacks; one of these is the limited applicability for moving targets, rotating shafts. In the ERC Advanced Grant “SIREN”, a patent application was submitted and the pre-prototype of a ball shooter was constructed to excite spindles of machining centres by ball impacts. Experiments with the pre-prototype proved that the contact time is one order of magnitude shorter than that of standard impulse tests, while the force signal is near ideal: prall-free impulses with 30 kHz bandwidth were generated. Potential industrial end-users and distributors expressed interest in case a prototype is developed with accurately tuneable impact time/location together with precise online detection of impact direction for moving objects. These tasks form the work packages and deliverables of the proposal.
Ámbito científico
- engineering and technologymechanical engineeringvehicle engineeringautomotive engineeringautonomous vehicles
- engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraft
- engineering and technologymechanical engineeringmanufacturing engineeringsubtractive manufacturing
Programa(s)
Régimen de financiación
ERC-POC-LS - ERC Proof of Concept Lump Sum PilotInstitución de acogida
1111 Budapest
Hungría