A state of a contracting member (e.g., a shape memory material member) in an actuator can be monitored. When activated, the actuator can be configured to morph into an activated configuration in which a dimension of the actuator increases. A sensor can be ...

A seat device for a vehicle includes a seat body (6) having a base portion (6b) adapted to be mounted on the vehicle and a moving portion (6a) movable relative to the base portion and an actuator (7) configured to operate at a first operational speed and a...