Figure 3

Characterization of the SMA actuator and conceptual actuator design of a suit-type soft wearable robot. (a) Schematic diagram of the experimental setup for tensile testing. (b) Measured 0.006-mil SMA blocked force as functions of strain and input current. (c) Overview of the suit-type soft wearable robot. (d) The cooling and heating of the SMA actuators. (e) The torque inducing the plantar flexion of the ankle.