Читать книгу Automática y Robótica en Latinoamérica - Alexander Martínez - Страница 10

Active Magnetic Bearings (AMB) are wide studied and applied nowadays, as for example in mining, petrol companies, power generator stations, etc. It is because this system improves efficiency in energy transmission as the consequence of controlled magnetic force over the shaft, which joins the source of the mechanical energy with the rotating machine (turbine, compressor, pump). Notwithstanding, shafts transmit not only rotating speed, also torque and quite advances of industry forced that shaft rotates at high speed values. Therefore, sensors and actuators must to be faster than this, but whether AMB cannot get an optimal position control, the electrical current, which produces the magnetic field to achieve the controlled magnetic force, will provoke heat through the wires that contain it. For this reason, in this work is analyzed the impact of sensors and actuators that were based in nanostructures in order to get faster response time and robustness, while AMB system can find its desired position control. Furthermore, while the heat is reduced also from their magnets, the total efficiency can be transmitted in better percent than AMB without faster and robust sensors.

Keywords: Rotating machinery, bearings, Active Magnetic Bearings, heat transmission, nanostructures.