Miniaturization and Lightweighting of Marine Rudder Control Lever

The miniaturization and lightweighting of the marine rudder control lever is not a mere “size reduction”.

1. Shift in Design Philosophy
1）From "mechanical lever" to "intelligent node"
① Adoption of Steer-by-Wire technology, replacing physical transmission with signals.
② Decoupling the direct relationship between lever size and steering torque, enabling weight and bulk reduction.
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2. Four Core Technical Enablers
1）Mechanical structure innovation
① Highly integrated packaging of sensors and controllers into a compact module.
② Simplified transmission system, with widespread use of small precision gearboxes.
③ Optimized support base (e.g., column-type structure instead of monolithic base), achieving weight reduction of approx. 37.7%.
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2）Application of new materials
① Aluminum alloy: more than 30% lighter than conventional steel.
② Carbon fiber composite: specific strength 7–9 times that of steel; high-end models achieve weight reduction of over 50%.
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3）Electronic control system evolution
① Steer-by-Wire replaces bulky mechanical/hydraulic lines with cables and a compact control box.
② Embedded systems integrate multiple circuit board functions into a single small board, eliminating redundancy.
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4）Modular design
① Modular commonality rate can reach over 70%.
② On-site replacement time for a faulty module < 5 minutes.
③ Final thickness controlled within 10 cm, and overall weight reduced by more than 50%.