Soft robot review

  • Chiwon Lee
  • Myungjoon Kim
  • Yoon Jae Kim
  • Nhayoung Hong
  • Seungwan Ryu
  • H. Jin Kim
  • Sungwan Kim
Special Issue: Soft Robotics
  • 484 Downloads

Abstract

Soft robots are often inspired from biological systems which consist of soft materials or are actuated by electrically activated materials. There are several advantages of soft robots compared to the conventional robots; safe human-machine interaction, adaptability to wearable devices, simple gripping system, and so on. Due to the unique features and advantages, soft robots have a considerable range of applications. This article reviews state-of-the-art researches on soft robots and application areas. Actuation systems for soft robots can be categorized and analyzed into three types: variable length tendon, fluidic actuation, and electro-active polymer (EAP). The deformable property of soft robots restricts the use of many conventional rigid sensors such as encoders, strain gauges, or inertial measurement units. Thus, contactless approaches for sensing and/or sensors with low modulus are preferable for soft robots. Sensors include low modulus (< 1 MPa) elastomers with liquid-phase material filled channels and are appropriate for proprioception which is determined by the degree of curvature. In control perspective, novel control idea should be developed because the conventional control techniques may be inadequate to handle soft robots. Several innovative techniques and diverse materials & fabrication methods are described in this review article. In addition, a wide range of soft robots are characterized and analyzed based on the following sub-categories; actuation, sensing, structure, control and electronics, materials, fabrication and system, and applications.

Keywords

Biological systems flexible materials smart structure soft robotics soft structure 

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Copyright information

© Institute of Control, Robotics and Systems and The Korean Institute of Electrical Engineers and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Chiwon Lee
    • 1
  • Myungjoon Kim
    • 2
  • Yoon Jae Kim
    • 2
  • Nhayoung Hong
    • 2
  • Seungwan Ryu
    • 3
  • H. Jin Kim
    • 3
  • Sungwan Kim
    • 4
  1. 1.Institute of Medical and Biological Engineering, Medical Research CenterSeoul National UniversitySeoulKorea
  2. 2.Interdisciplinary Program for Bioengineering, Graduate SchoolSeoul National UniversitySeoulKorea
  3. 3.School of Mechanical and Aerospace EngineeringSeoul National UniversitySeoulKorea
  4. 4.Department of Biomedical EngineeringSeoul National University College of MedicineSeoulKorea

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