Method for the conversion of an electrical magnitude into a pneumatic or hydraulic magnitude and a converter for implementing this method

摘要

The method for the conversion of an electrical magnitude into a pneumatic or hydraulic magnitude is of the type using at least one pneumatic or hydraulic potentiometer 4. The method involves securely fixing a vibrating blade 1, in particular piezoelectric, near the potentiometer 4 in such a way as to allow the said blade to vibrate opposite the nozzle 9 of the potentiometer and thus successively to block or unblock the nozzle outlet during the vibration of the blade. The electrical magnitude to be converted is applied to the blade in such a way that it is made to vibrate with an amplitude depending on the said electrical magnitude. The resultant modulation of the outflow from the nozzle is thus a function of this electrical magnitude and, as a result, the mean pressure Ps sampled at the output of the potentiometer is representative of the said electrical magnitude. <IMAGE>