DRIVING METHOD AND DRIVING SYSTEM OF ACTUATING USING SHAPE MEMORY ALLOY, AND ELECTRONIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a driving method of an actuator using shape memory alloy.SOLUTION: An impact driving type actuator 100 operates with pulse voltage generated with an operation of an FET 213. A key board 209 is configured to output a key event at timing of input operation. A stress monitoring unit 201 is configured to calculate a stress amount of the impact driving actuator on the basis of the key event and a parameter of the pulse voltage. A stress adjustment unit 203 is configured to, when the stress amount reaches an allowance, change the parameter of the pulse voltage. The parameter may be a crest value or pulse width of the pulse voltage. The stress adjustment unit may stop an operation of the impact driving type actuator depending on the key event corresponding to a brake cord.SELECTED DRAWING: Figure 6