A linear magnetostrictive actuator with feedback compensation including a force train that has at least one magnetostrictive element, an excitation component disposed on or within the actuator, a feedback apparatus whose output signal is proportional to the magnetic induction within the magnetostrictive...http://www.google.es/patents/US4585978?utm_source=gb-gplus-sharePatente US4585978 - Magnetostrictive actuator with feedback compensation
Magnetostrictive actuator with feedback compensation
