Design of a miniature series elastic actuator for bilateral teleoperations requiring accurate torque sensing and control

Ying Lung Yu, Chao-Chieh Lan

Research output: Contribution to journalArticle

Abstract

Compared with stiff actuators, series elastic actuators (SEAs) can render more accurate output torque and stiffness. Hence, SEAs are suitable for robots that need to interact safely with human or properly with the actual or virtual environment. Many existing rotary SEAs are bulky and not suitable for multiple-degree-of-freedom (DoF) applications. To explore the merits of SEAs in bilateral teleoperations that often require multiple-DoF force feedback, this letter presents a miniature rotary SEA. By using a specifically designed planar spring, the size of the SEA can be minimized while the output torque and stiffness can still be accurately controlled. Dynamic modeling and impedance control experiments show that the torque and stiffness rendering results are better than those of existing SEAs. A master-slave robot system using the proposed SEA demonstrates that both stiff and soft remote environments can be virtually realized. We expect that this miniature SEA can serve as an alternative actuator for robotic teleoperations requiring accurate torque sensing and control.

Original languageEnglish
Article number8604035
Pages (from-to)500-507
Number of pages8
JournalIEEE Robotics and Automation Letters
Volume4
Issue number2
DOIs
Publication statusPublished - 2019 Apr 1

Fingerprint

Teleoperation
Remote control
Torque
Actuator
Sensing
Actuators
Series
Stiffness
Design
Robot
Degree of freedom
Impedance Control
Robots
Force Feedback
Output
Dynamic Modeling
Virtual Environments
Rendering
Virtual reality
Robotics

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Human-Computer Interaction
  • Biomedical Engineering
  • Mechanical Engineering
  • Control and Optimization
  • Artificial Intelligence
  • Computer Science Applications
  • Computer Vision and Pattern Recognition

Cite this

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Design of a miniature series elastic actuator for bilateral teleoperations requiring accurate torque sensing and control. / Yu, Ying Lung; Lan, Chao-Chieh.

In: IEEE Robotics and Automation Letters, Vol. 4, No. 2, 8604035, 01.04.2019, p. 500-507.

Research output: Contribution to journalArticle

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