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Design of Transmission Shafts

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Related Experiment Video

Updated: May 5, 2026

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

Wire-form shape memory alloy actuators: modeling, design, and control.

Rongru Zhang¹, Honghao Yue², Hao Sun³

¹Research Center of Aerospace Mechanism and Control, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150080, China.

Microsystems & Nanoengineering

|March 2, 2026

Summary

This summary is machine-generated.

Wire-form shape memory alloy (WF-SMA) actuators offer high energy density for robotics and biomedicine. This review assesses WF-SMA modeling, control, and applications, highlighting challenges and future directions in integrated design.

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Area of Science:

Materials Science
Robotics
Biomedical Engineering

Background:

Wire-form shape memory alloy (WF-SMA) actuators are crucial in advanced applications due to their energy density and actuation versatility.
WF-SMAs bridge high-force actuation and material compliance, enabling intelligent soft materials and stretchable electronics.

Purpose of the Study:

To provide a comprehensive assessment of WF-SMA actuators, covering modeling, configurations, control, and applications.
To identify challenges hindering widespread WF-SMA adoption and propose future research directions.

Main Methods:

Systematic review of SMA actuation models, actuator design paradigms, and control strategies.
Classification of actuator designs based on mechanical load characteristics (linear, nonlinear, differential).
Survey of control approaches from conventional algorithms to advanced methods like neural networks and self-sensing.

Main Results:

Revisiting SMA actuation models highlights challenges in representing nonlinear and thermodynamic behaviors.
Actuator designs are classified, and large-stroke strategies are explored.
Control strategies range from conventional to intelligent methods, including integrated self-sensing.

Conclusions:

Key challenges for practical WF-SMA application include the need for integrated micro-nano fabrication, flexible electronics, and multifunctional materials.
Future research should focus on integrated modeling-design-control frameworks, leveraging deep learning for improved performance and reliability.