ACTUATOR ARRANGEMENT COMPRISING A MAGNETIC SHAPE-MEMORY ALLOY

摘要

The invention relates to an actuator arrangement which comprises an actuating element which is composed of a magnetic shape-memory material, a solenoid which can be driven and has at least one ferromagnetic flux-conducting element and at least one field coil which is arranged on the flux-conducting element, wherein the actuating element is arranged in an air gap in the flux-conducting element in such a way that a magnetic field which is generated by driving the solenoid penetrates the actuating element and causes the length of the actuator element to change, wherein the actuator arrangement has a measuring means which generates a measurable electrical signal, the value of said electrical signal changing depending on the expansion of the magnetic shape-memory material and the current which is impressed into the solenoid.