Twisting Wire Actuator

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Twisting Wire Actuator
Prof. Moshe Shoham Oded Salomon
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Twist vs. Length
MRL Technion
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Experimental system and Linearity
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Theoretical vs. experimental results
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• Displacement slope

The displacement slope can be determined by the
diameter and length of the twisted wires, given
by D2/L
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• 2-6 DOF system

The shown 2 DOF system, can be easily constructed
as 6 DOF.
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Actuation characteristics
This actuation was known to achieve
We have shown that this type of actuation can
introduce

• High pulling forces
• Small displacements
• High speed
• Low inertia
• Large workspace

• Sub-micron displacement
• Linearity
• High positional accuracy

These characteristics are achieved without the
use of gears, sliders, or high precision lead
screws, thus contributes to

• Simplicity
• No friction
• No stick-slip effects

MRL Technion