Patent ID: 9696147
Date: 2017-07-04
CPC Classifications: E01C,G01B,G01C

Claim:
1. A method for aligning tracks of a roadwork machine, the roadwork machine being designed for producing and/or processing a surface layer comprising concrete or asphalt material along a predetermined path, and comprising a machine frame with: a surface processor for carrying out a material processing step, a plurality of track units with tracks for moving the roadwork machine along a first axis and actuators for pivoting the track units about a second axis with respect to the machine frame, wherein the second axis is orthogonal to the first axis, and a machine guidance system for controlling the tracks and the actuators of the track units, wherein at least one retro-reflector is attached to a first track unit for allowing detection of an orientation of the first track unit, and at least one retro-reflector is attached to the machine frame for allowing detection of an orientation of the machine frame; the method comprising: determining an initial orientation of the machine frame, determining an initial orientation of the first track unit, determining whether a difference between a most recently determined orientation of the machine frame and a most recently determined orientation of the first track unit is within a predefined threshold value, initializing a pivoting of the first track unit, determining a changed orientation of the first track unit after the pivoting, and determining an orientation of the machine frame after the pivoting.