| 摘要 |
A constant force actuator transforms applied heat to an applied force on an output device. Strips of shape memory alloy are coiled into spirals and trained to have this configuration as a static state. The shape memory alloy springs are attached to the output device to apply a directional force. When one of the springs is heated, the modulus of elasticity within the spring material changes. This change in modulus increases the force which the spring exerts in returning to its static state, which in turn increases the force applied to the output device, upsetting the balance of forces and resulting in a rotation. |
