Apparatus and method for precisely controlling the movement of a magnetostrictive transducer including an elongated magnetostrictive rod, means for inducing a magnetic field in the rod and supplying drive current for moving the rod in response to the drive current. A temperature compensated strain sensor...http://www.google.es/patents/US4975643?utm_source=gb-gplus-sharePatente US4975643 - Measurement and control of magnetostrictive transducer motion using strain sensors
Measurement and control of magnetostrictive transducer motion using strain ...
