| 摘要 |
A method and apparatus for moving a blasting machine along a surface to be treated while maintaining a desired disposition of the blasting machine relative to the surface being treated. A support structure having a moveable boom with a blasting machine on its distal end is positioned adjacent the surface for treatment. Means are provided on the blasting machine to sense the positions of the blasting machine relative to the surface for treatment as the boom is moved through a working path. Movements of the blasting machine away from the desired disposition are sensed and compensated to adjust the blasting machine toward the intended disposition substantially throughout the movement of the boom through the working path.
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