Variable Stiffness Actuators

Dear Colleagues,

The application of compliant actuators is pursued for various reasons, including safe human-machine interactions, the imitation of physiological muscle characteristics, the reduction of peak torque, peak performance, and energy consumption. The mechanical design and technical implementation of the variable compliant actuators is a key challenge. As multivariable systems, actuator systems equipped with adjustable compliance require special control methods. Some application scenarios for these modern actuator topologies are bipedal gait, support at work or in everyday life, rehabilitation robotics, and industrial motion control.

Contributions from all areas of compliant actuators are welcome in this Special Issue, particularly the following:

• Rehabilitation Robotics: Variable stiffness actuators to support the lower limb;
• Design: Variable Stiffness Actuator design and experimental validation of prototypes;
• Energy Analysis: Efficiency enhancement with actuators containing elastic elements;
• Support in everyday life: Actuators for motion support (e.g., elderly people);
• Control Systems: Control of systems including compliant actuators;
• Industrial Application: VSA for use in motion support and automated processes.

Prof. Dr.-Ing. Dr. med. Dr. h. c. Steffen Leonhardt
Dipl.-Ing. Bernhard Penzlin
Dr.-Ing. Chuong Ngo
Guest Editors

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