Method and apparatus for controlling the position of a...

Details Method and apparatus for controlling the position of a... Method and apparatus for controlling the position of a...

B - Operations, Transporting

66

C

138/71, 341/97

B66C 23/00 (2006.01) E21B 15/04 (2006.01) G05B 19/31 (2006.01)

Patent

CA 1203309

ABSTRACT OF THE DISCLOSURE A method is set forth for controlling the orientation of an articulated boom of the type having a first portion and a second feed arm portion such that the first portion remains parallel to a predetermined position during movement of the articulated boom. The method utilizes a computer which senses the angular position of the various parts of the boom in a total of five directions and computes the required angular position of the feed arm to maintain it parallel to a set position as the boom is moved in any direction. Various hydraulic servovalves are utilized to control the flow of hydraulic fluid in a manner to maintain parallelism within 1/2° with the referenced position.

436142

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