In association with Bologna and Naples scientists, the Saarland University researchers have constructed a robotic hand using actuators, which is larger than a human arm. Having the ability to twist strings, the small electric motors were used as essential components for designing the innovative string actuator. Though delicate, the robotic hand will be a powerful tool for operation in harsh environments or for assisting house-hold chores.
Presentation of this innovative robotic hand took place during a meeting at the Karlsruhe-based Forschungszentrum Informatik. The event represented the revolution in robotic research, which is a part of European project DEXMART. Since four years, international scientists made efforts to bring upgrades in the implementation of two-arm robots. Around €6.3 M funding was offered by the European Union.
The main objective of this initiative is the incorporation of the innovative technology within the robotic arm, with its size and form being similar to a human arm. The fully-equipped and sensorised robotic hand will be capable of sensing various objects, followed by handling and safely placing the objects in its destination. The handling efficiency of robotic hand was demonstrated with delicate Easter egg and a heavy glass bottle by mechatronic researcher, Chris May in Karlsruhe.
Saarbrücken researchers used robust polymer strings, equipped with a small electric motor and a 20 cm long string to lift a load of 5 Kg by 30 mm within a split second.
According to the novel miniature actuator, Chris May, each robotic finger includes three segments, powered by individual tendons. The high-speed mini electric motors have small torque on the order of 5 N-mm. This dexterous robotic hand will be ideal for operation in both domestic environments as well as industrial settings. The integration of small electric motors with a twisted string will also serve other applications.
Source: http://www.uni-saarland.de/