ARM Automation’s SplashBotix division is leveraging magnetic coupling technology to solve complex mechanical challenges in machine design. Their experience spans some of the largest fountain shows integrating robotics, but current projects are pushing the envelope in miniaturization and safety-critical design, according to Ronn Garland, program director at the company.
One notable development is a compact robot capable of creating dynamic dancing fountains for children's playgrounds. The design incorporates magnetic couplings to ensure intrinsic safety: If a child inserts a foreign object, the magnets disengage before causing harm. This showcases how magnetic design can replace traditional mechanical barriers for safer human-machine interaction.
Software and Aquatic Actuators
These magnetic coupling systems are supported by proprietary in-house software that addresses the core mechanical issues of torque “wind up” and slip inherent to magnetically coupled drives. Garland credits Dr. Joseph Geisinger, the company’s CTO, with engineering sophisticated position control loops running on robust processors embedded within the SplashValve system. This solution eliminates the need for conventional shaft seals that are notorious for eventual leakage and wear, thereby significantly enhancing system reliability beyond fountains, Garland said.
The company is developing very high torque underwater actuators designed for harsh aquatic environments and potential use in submersibles and ocean exploration tech. The magnetic coupling approach here offers superior sealing integrity, Garland notes, and reduces maintenance compared to traditional shaft-seal designs.
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