Method of controlling a shape memory alloy actuator utilizing resistance change

A method of controlling a shape memory alloy actuator utilizing the change in resistance exhibited by the actuator over an actuation cycle, or a derivative thereof, to identify at least one event, such as, for example, a peak, valley, change in slope without reaching a valley, or a jump in resistanc...

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Bibliographic Details
Main Authors Herrera, Guillermo A, McKnight, Geoffrey P, Gao, Xiujie, Johnson, Nancy L, Mankame, Nilesh D, Browne, Alan L, Pinto, Nicholas William
Format Patent
LanguageEnglish
Published 29.05.2012
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Summary:A method of controlling a shape memory alloy actuator utilizing the change in resistance exhibited by the actuator over an actuation cycle, or a derivative thereof, to identify at least one event, such as, for example, a peak, valley, change in slope without reaching a valley, or a jump in resistance within the signal plot that corresponds to the start of actuation, end of actuation, an overload case, and the introduction of a resistive element respectively, and generating a response based upon the event.