Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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An Experimental Study on Control and Development of an Omni-directional Mobile Robot

전방향 이동로봇의 제작과 제어에 관한 실험연구

  • Lee, Jeong Hyung (Department of Mechatronics Engineering, Chungnam National University) ;
  • Jung, Seul (Department of Mechatronics Engineering, Chungnam National University)
  • 이정형 (충남대학교 메카트로닉스공학과) ;
  • 정슬 (충남대학교 메카트로닉스공학과)
  • Received : 2013.10.17
  • Accepted : 2014.07.16
  • Published : 2014.08.25
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Abstract

This paper presents the development and control of an omni-directional holonomic mobile robot platform, which is equipped with three lateral orthogonal-wheel assemblies. Omni-directionality can be achieved with decoupled rotational and translational motions. Simulation studies on collision avoidance are conducted. A real robot is built and its hardware is implemented to control the robot. Control algorithm is embedded on DSP and FPGA chips. Hardware for motor control such as PWM, encoder counter, serial communication modules is implemented on an FPGA chip. Experimental studies of following joystick commands are performed to demonstrate the functionality and controllability of the robot.

본 논문은 세 개의 바퀴로 구동되는 전방향 이동로봇의 제작과 제어에 대해 소개한다. 전방향성 움직임은 독립적인 회전과 병진운동을 통해 이루어진다. 전방향 이동로봇의 기구학과 동역학을 사용하여 장애물 회피에 대한 시뮬레이션도 수행하였다. 실제 로봇을 제어하기 위해 로봇을 제작하고 하드웨어를 구성하였으며, 제어 알고리즘은 DSP와 FPGA 칩에 구현하였다. 모터제어에 필요한 PWM, 엔코더 카운터, 통신 등과 같은 하드웨어는 FPGA에 구현하였다. 조이스틱을 통한 전방향 이동로봇을 제어함으로써 로봇의 동작성을 확인하였다.

Keywords

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