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Development of Active Suspension System for Wheelchairs to Improve Riding Comfort of Gait Disorders

보행 장애인의 승차감 개선을 위한 휠체어용 능동형 서스펜션 시스템 개발

  • Heo, Yeong Jun (Gumi Electronics & Information Technology Research Institute, ICT Convergence Research Division Health Care Research Center) ;
  • Jeon, Geum Sang (Gumi Electronics & Information Technology Research Institute, ICT Convergence Research Division Health Care Research Center) ;
  • Lee, Sang Hun (Gumi Electronics & Information Technology Research Institute, ICT Convergence Research Division Health Care Research Center) ;
  • Choi, Seong Dae (Kumoh National Institute of Technology, Department of Mechanical System Engineering) ;
  • Jang, Ik Gyu (Gumi Electronics & Information Technology Research Institute, ICT Convergence Research Division Health Care Research Center)
  • 허영준 (구미전자정보기술원 ICT융합연구본부 디지털헬스케어연구센터) ;
  • 전금상 (구미전자정보기술원 ICT융합연구본부 디지털헬스케어연구센터) ;
  • 이상훈 (구미전자정보기술원 ICT융합연구본부 디지털헬스케어연구센터) ;
  • 최성대 (금오공과대학교 기계시스템공학과) ;
  • 장익규 (구미전자정보기술원 ICT융합연구본부 디지털헬스케어연구센터)
  • Received : 2020.07.15
  • Accepted : 2020.10.23
  • Published : 2020.10.31

Abstract

As the number of people with gait disorders increases, the demand for using wheelchairs increases and the area of a ctivity for people with disabilities expands, thereby they increasing the demand for riding comfortability in various driving environments. Therefore, this study is to develop an entry-level active suspension system that apply to wheelchairs and to evaluate its usability. The suspension applied in this paper consists of a coil spring, a shock absorber, a control module to control the strength of the shock absorber, and a road surface condition monitoring system. A wheelchair occupant secures the riding comfort by adjusting the coil strength of the shock absorber in 12 steps according to various road conditions. Therefore, the mechanical properties were evaluated through the structural analysis of the suspension system, and the tendency toward the magnitude of the road surface vibration attenuated according to the rigidity of the suspension through the vibration test was attempted. In conclusion, as a result of structural analysis of the suspension system, stress in a range lower than the yield strength of the material was generated, and the vibration test showed the effect of attenuating the vibration generated from the road surface when the stiffness of the suspension was adjusted.

Keywords

References

  1. Lim G, Kim YJ, Kim YO, Yang SY. A Study on the Wheelchair Storage System Mounted on the Trunk of the Sedan Passenger Car. The Korea Society for Fluid Power and Construction Equipment. 2019;16(3):8-15.
  2. Kim JY, Kim JB, Hwang SB, Jang WH. The Usability Study on Korea Express Bus with Wheelchair Access. Journal of The Korea Academia Industrial cooperation Society. 2019; 20(7):571-7. https://doi.org/10.5762/KAIS.2019.20.7.571
  3. Jung JA, Hwang HC, Lee WY, Lee EH. A Study on the Direct Drive Calibration Techniques of Power Assist Modules to Assist the Lift of Manual Wheelchairs Stairs. Journal of The Institute of Electronics and Information Engineers. 2019; 56(12):134-41. https://doi.org/10.5573/ieie.2019.56.12.134
  4. Kim BS, Jeong YJ, Son BR. Study of Electric Car Manufacturing Using Self Made Technology. Journal of The Korean Society of Automotive Engineers. 2019;2019(11): 1384-8.
  5. Han SW, Jo JM, Yang JG, Song YH, Heo GS. Development of Unified Chassis Control System for Vehicle Stability with Active Suspension and Torque Vectoring. Journal of The Korean Society of Automotive Engineers. 2019;2019(5):387-9.
  6. Jang SH, Jang IK. Semi-Active Control of Wheelchair Suspension for the Ride Comfort Improvement. Journal of Institute of Control, Robotics and Systems. 2019;2019(5):460-1.
  7. Jung JS, Ahn YH, Hwang IH, Yuk SW, Chin DH, Choi JG. Test Method of Safety in Wheel Position for Wheelchair. Journal of The Korean Society of Manufacturing Process Engineers. 2011;2011(11):94.
  8. CATENARO, EDOARDO. Modeling and experimental analysis of a bicycle equipped with an in-wheel suspension system. (Master's degree, ING-Faculty of Industrial and Information Engineering, 2018).
  9. Kim KC, Han JH, Lee YK, Soh MW, Park KH, Seo IS. Development of Active Suspension Control Logic for Improving Ride Comfort using State Constraint SMC. Journal of The Korean Society of Automotive Engineers. 2018;2018(6):425.
  10. Jeong JH, Seo IS, Lee SH, Lee JW. A Study On The Active Suspension Control For Improving Vehicle Handling Performance. Journal of The Korean Society of Automotive Engineers. 2018;2018(6):404.
  11. Kwon HD, Jang KI, Hong SJ, Seo IJ, Yang KJ. The study of Timing Belt Tracking & Pulley Flange Design for reducing belt wear. Journal of The Korean Society of Automotive Engineers. 2019;2019(5):124-7.
  12. Kim HJ. Experimental Study on Production Characteristics of Straight Bevel Gear using a Polyjet Method 3D Printer. Journal of The Korean Society of Manufacturing Process Engineers. 2015;14(6):63-8. https://doi.org/10.14775/ksmpe.2015.14.6.063
  13. Choi GH, Lee IH, Oh JS. A study on the design of light weight impact beam using aluminum material. Journal of Korean Society of Automotive Engineers. 2014;2014(5):14.
  14. Yoon YG, Yu YC, Choi IH. Effects of Heat-Treatment on the Microstructure and Mechanical Properties of Cu-1.9% Be-O.2% Co Alloy. Journal of Metals and Materials. 1971;1971(1):1-10.
  15. Jee DH, Kang KJ. A Systematic Approach for Material Selection of Parts. Journal of The Korean Society of Automotive Engineers. 1996;1996(6):353-9.