Authors:
Ryota Suzuki
1
and
Yoshihisa Uchida
2
Affiliations:
1
Graduate School of Engineering, Aichi Institute of Technology, Yachigusa 1247, Yakausacho, Toyota 470-0392 and Japan
;
2
Aichi Institute of Technology, Yachigusa 1247, Yakausacho, Toyota 470-0392 and Japan
Keyword(s):
Mower Robot, Swing Mower Mechanism, Lever-crank Mechanism, Swath, Torque, Velocity, Centroid Movement, Sideslip, Energy Consumption, Operation Time.
Related
Ontology
Subjects/Areas/Topics:
Informatics in Control, Automation and Robotics
;
Modeling, Simulation and Architectures
;
Robot Design, Development and Control
;
Robotics and Automation
Abstract:
This study proposes a new mower robot with a swing mower mechanism for advantages such as a string trimmer and a wide swath. The proposed swing mower mechanism is designed for installation in the main body of a four-wheel drive mower robot AMR-D01. The AMR-D01 had overall dimensions as follows: 0.60 m length, 0.50 m width, and 0.30 m height; it weighs 28 kg and maximum velocity is 1.29 m/s. The swing mower mechanism is based on the lever-crank mechanism and translates motor rotation into swing of the rotary blade. We model the mechanism and simulate the characteristics of the centroid movement, sideslip, energy consumption, and operation time to evaluate the swing mower mechanism. The robot velocity is controlled to prevent the occurrence of the unmown spot. Swath is increased from 0.24 m to 0.62 m by 2.58 using the mechanism. The operation time is also decreased by 1/2.58. The swing mower mechanism does not have much influence on the robot movement. The change of the static friction
coefficient and the slope angle also does not have much influence on the sideslip of the robot under the present conditions. The energy consumption increases with the increasing robot velocity.
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