鉄管内走行ロボットのセンサと円周方向走行
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概要
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This paper describes an adhesion status detection sensor as well as crabbing motion for an in-pipe magnetic-wheeled robot. The robot targeted in this study can travel in any position within a pipe via magnetic-wheel adhesion, and can easily negotiate bends in pipe elbows and T-pieces. Moreover, the dual structure of the wheels ensures superior travel performance even over gaps like those commonly found in gas and other pipelines.<BR>However with no sensor in the robot for accurately judging its own adhesion status, we had a significant problem because the robot had to be attached to the pipe in order to travel. Steps also had to be taken because it looked like the adhesion status of the robot might well deteriorate under certain conditions, such as when traveling over weld lines or when reacting to avoid obstacles. To that end, we used a hall element in the present study to accurately detect adhesion status, and then set about confirming the efficacy of the element using an actual robot. We found with hall element output that inner magnetic-wheel rotation generated periodic vibration, so we eliminated this vibration as well.<BR>Here we are also proposing a new means of travel related to crabbing, which is the magnetic car-type robots unique motion for mobility, and we set about confirming the efficacy of this means of travel using an actual robot. In more specific terms, the method maintains stability and provides mobility with a crabbing motion (much like Bogen moves in skiing) using a system that steers the front and rear wheels in opposite directions and offsetting their speed for forward and backward direction.
- 社団法人 日本ロボット学会の論文
- 1997-11-15
著者
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