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Study on Driving a Bumped Slope of Mobile Robot According to Changing the Damping Coefficient of Suspensions

이동 로봇의 서스펜션 댐핑계수 변화에 따른 장애물이 있는 경사로 주행에 관한 연구

  • Jeon, Bongsoo (Mechatronics Engineering, Chungnam National University) ;
  • Kim, Jayoung (Mechatronics Engineering, Chungnam National University) ;
  • Lee, Jihong (Mechatronics Engineering, Chungnam National University)
  • Received : 2016.02.25
  • Accepted : 2016.04.06
  • Published : 2016.05.31

Abstract

Most of outdoor mobile robots have a suspension on each wheel in order to relieve the shock by ground obstacles and to improve the driving stability. Typically, in the actual operations, the suspensions have been used under a given set of conditions as all the damping and spring coefficients of the suspensions are fixed. However, it is necessary to readjust the coefficients of the suspensions according to surface conditions that may cause the unstable shaking of a robot body at high speed driving. Therefore, this paper is focused on the mobility analysis of an outdoor robot when the coefficients of suspensions (in particular, damping coefficients) are changed while driving on an uneven road surface. In this paper, a semi-active suspension with twelve damping coefficient levels was used and a small sized vehicle with the suspensions was employed to analyze the mobility dependent on a change of the damping coefficient. And the mobility was evaluated through driving experiments on a bumped slope.

Keywords

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