The robot's drive train, including the dual-hemisphere system. (Image: University of Twente)

Inspecting the condition of dikes and other sea defense structures is typically a task for robots, working in a team and in a highly autonomous way. But if they move around across the dikes, perform tests, and communicate the results for six hours a day, they use a lot of energy.

A new method of storing energy in a mechanical, rather than electrical way, was developed. This controlled passive actuation incorporates an automatic gearbox that uses two metal hemispheres instead of a belt drive. Electromotors join in only to compensate for mechanical losses. By doing so, they can work within the high-rev/low-torque regime. The new powertrain was specifically designed for future dike inspection robots, but improving the energy efficiency of existing robots and robot arms is an attractive application as well.

Source 

Topics:
Automation Motion Control Motors & Drives Power Transmission

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