Phys.org: Soft robots do a lot of things well but they're not exactly known for their speed. The artificial muscles that move soft robots, called actuators, tend to rely on hydraulics or pneumatics, which are slow to respond and difficult to store.
Dielectric elastomers, soft materials that have good insulating properties, could offer an alternative to pneumatic actuators but they currently require complex and inefficient circuitry to deliver high voltage as well as rigid components to maintain their form—both of which defeat the purpose of a soft robot.
Now, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a dielectric elastomer with a broad range of motion that requires relatively low voltage and no rigid components. They published their work recently in Advanced Materials. Cont'd...
Engineers use the environment to give simple robotic grippers more dexterity.
Engineers at MIT have now hit upon a way to impart more dexterity to simple robotic grippers: using the environment as a helping hand. The team, led by Alberto Rodriguez, an assistant professor of mechanical engineering, and graduate student Nikhil Chavan-Dafle, has developed a model that predicts the force with which a robotic gripper needs to push against various fixtures in the environment in order to adjust its grasp on an object.
By David Szondy for Gizmag: One of the biggest events at the recent 2015 IEEE International Conference on Robotics and Automation (ICRA) in Seattle was the first Amazon Picking Challenge, in which 31 teams from around the world competed for US$26,000 in prizes. The challenge set entrants with the real-world task of building a robot that can do the same job as an Amazon stock picker.According to Amazon Chief Technology Officer Peter Wurman, who initiated the challenge, the task of picking items off the shelf may seem simple, but it involves all domains of robotics. The robot has to capable of object and pose recognition. It must be able to plan its grasps, adjust manipulations, plan how to move, and be able to execute tasks while noticing and correcting any errors.
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