1. Department of Mechanical Engineering, Chulachomklao Royal Military Academy, Nakhon Nayok, Thailand
2. Institute of Field Robotics, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
3. Department of Mathematics, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
4. Mechatronics Research Unit, Mahasarakham University, Mahasarakham, Thailand