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Spinoff story
Motor Controllers
A real-world story of NASA technology finding a life beyond the mission.
About this technology
Overview
Kollmorgen Corporation's Mermaid II two person submersible is propeller-driven by a system of five DC brushless motors with new electronic controllers that originated in work performed in a NASA/DOE project managed by Lewis Research Center. A key feature of the system is electric commutation rather than mechanical commutation for converting AC current to DC.