Soft Rotary Actuators

Basic configuration and sequential actuation for subgroups of embedded bladders for two types of rotary actuators Invention Summary: Rutgers researchers have invented a novel rotary mechanism – a soft rotary actuator – based on peristaltic motion of elastomeric materials, which consists of an inflatable stator paired with a rotor. Timed inflation and deflation of the air-filled channels in the stator enable the rotation of the rotor. This invention can extend the potential functionality of soft robotic systems and machines by providing rotational torque without requiring bending or twisting. This technology could also enable novel flexible mobile vehicles that are pneumatically actuated. Market Applications: Soft Robotics Medical Devices Flexible Mobile Vehicles Search and Rescue Equipment Advantages: Unique wheel and axle configuration that may allow for passive suspensions in wheeled vehicles Motor rotation without bending/twisting Soft, metal-free motors suitable for harsh environments with electromagnetic fields Can withstand mechanical impact Intrinsically safer for human/machine interaction Intellectual Property & Development Status: Patent pending. Available for licensing and/or research collaboration. Publication: Rotary Actuators Based on Pneumatically Driven Elastomeric Structures (2016) Gong X, Yang K, Xie J, Wang Y, Kulkarni P, Hobbs AS and Mazzeo AD. Advanced Materials 28:7533-7538.