The NOAO 4-meter Mayall Telescope (Kitt Peak, Arizona, EEUU) will be the basis of the worldwide research project BigBOSS [1], [2], witch allows the simultaneous observation of thousands of galaxies and quasars and provide significant advances in the study of the Dark Energy. To achieve this, BigBOSS uses an array of 5000 mini-robots responsible for positioning optical fibers. These will focus the radiation of each target into a three spectrograph system that will analyse the obtained signals. To do this, these positioners are able to place the fibers with an accuracy of 5 ┬Ám, within a maximum time of 16 s and with very low consumption levels. This surpasses the performance of all mechatronic positioners designed for this type of applications.