A method for controlling a shape memory alloy - actuator with the use of a change in resistance

摘要

A method for autonomous control of a shape memory alloy - actuator, which forms an actuator length are, wherein the process comprises:a. application of an activation signal to the actuator;example, monitoring of the specific electrical resistance of the actuator in the course of time, in order, on the basis of a change of the electrical resistance to develop a return signal;c. determining a first event within the return signal on the basis of a predetermined event definition; andd. generating a response, is determined when the event,wherein the step b) further comprises the steps of monitoring of the specific resistance with the use of a - of the wheatstone bridge, which forms a plurality of paths, in order to a value different from zero to detect, and wherein within at least one of the branches a shape memory section is arranged, which forms one section length, which is smaller than the actuator length are, and wherein the step b) further comprises the step of searching a look-up table contains for providing a temperature compensation.