| 摘要 |
A thermal actuator (1) having a plurality of passive stable states (21, 22) is provided. The thermal actuator (1) comprises an actuator body (3), an actuating arrangement (10)and a thermal control arrangement (15). The actuating arrangement further comprises a phase change material, yielding a volume change upon a change in phase of the phase change material. The actuating arrangement(10) change state due to the volume change. The thermal control arrangement (15) has at least a first and a second thermal controlling means (16, 17), wherein at lest one of themes individually controllable in order to have a localized control of the change in phase and thus the state of the actuating arrangement(10). A method for switching a thermal actuator (1) according to the invention is also presented.
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