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Soft robotics is an emerging research subject showing great promise for applications where traditional and rigid robotics is limited, for example, creating stroking sensation by using soft robotics. The purpose of this master's thesis project is to convey caress by designing and manufacturing a wearable haptic soft belt with locomotion. This device is mainly composed of pneumatic artificial muscles, pressurized actuator and control loop by Arduino. The locomotion of this device is realized through the elongation, shortening and position change of tubular pneumatic artificial muscles which was inspired by inchworm locomotion. Several different methods and materials were tested in the experiment. The results show that the device based on the principle of different friction successfully realizes the expected function.

Yes / Although gaze during adaptive gait involving obstacle crossing is typically directed two or more steps ahead, visual information of the swinging lower-limb and its relative position in the environment (termed visual exproprioception) is available in the lower visual field (lvf). This study determined exactly when lvf exproprioceptive information is utilised to control/update lead-limb swing trajectory during obstacle negotiation. 12 young participants negotiated an obstacle wearing smart-glass goggles which unpredictably occluded the lvf for certain periods during obstacle approach and crossing. Trials were also completed with lvf occluded for the entirety of the trial. When lvf was occluded throughout, footplacement distance and toe-clearance became significantly increased; which is consistent with previous work that likewise used continuous lvf occlusion. Both variables were similarly affected by lvf occlusion from instant of penultimate-step contact, but both were unaffected when lvf was occluded from instant of final-step contact. These findings suggest that lvf (exproprioceptive) input is typically used in an online manner to control/update final foot-placement, and that without such control, uncertainty regarding foot placement causes toe-clearance to be increased. Also that lvf input is not normally exploited in an online manner to update toe-clearance during crossing: which is contrary to what previous research has suggested.