Patent ID: 6082927
Filing Date: 2000-07-04
Classification: E01C,E02F,Y10S

Abstract:
A process of controlling a mobile machine along a path under the mobile machine with a cross slope level/torsion control comprising the steps of:providing a frame for supporting paving, fine grading, conveying or supporting equipment while traveling along the path under the mobile machine;providing at least two traveling supports for transporting and elevating the frame with at least one traveling support on a reference side of the mobile machine and at least one traveling support on cross slope side of the mobile machine;providing at least four jacking points having variable vertical extension placed between the traveling supports and frame with two jacking points being on the reference side of the mobile machine and two jacking points being on the cross slope side of the mobile machine;tracking on the reference side of the mobile machine a reference in elevation to determine a desired reference attitude for the reference side of the mobile machine;varying the actual attitude of the reference side of the mobile machine to assume the desired reference attitude;sensing the actual attitude of the reference side relative to gravity;providing an attitude sensor on the cross slope side of the mobile machine for causing the actual attitude of the cross slope side to be sensed relative to gravity;varying the relative elevation between the two jacking points on the cross slope side of the mobile machine to cause the attitude sensor of the cross slope side of the mobile machine to null to a predetermined value relative to the reference side of the mobile machine; and,sensing the actual cross slope relative to gravity; and,varying together the elevation of the cross slope side of the mobile machine relative to the reference side of the mobile machine to produce a desired cross slope.