Patent ID: 11873617
Assignee: DEERE & COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A mobile work machine, comprising:
a frame;
a ground engaging, blade;
a first grade control system that controls an orientation of the blade based on a geographic position signal received from a geographic position system;
a second automatic grade control system that automatically controls the orientation of the blade;
a grade control switching, system that receives a presence signal indicative of a presence of the geographic position signal and automatically controls activation of the first grade control system and the second automatic grade control system based on the presence of the geographic position signal;
an angle identifier that identifies a predetermined target mainfall and cross slope of the grade while the first grade control system is controlling the orientation of the blade and is configured to provide the identified predetermined target mainfall and cross slope to the second grade control system when the presence signal indicates that the geographic position signal is interrupted, the angle identifier including a blade orientation detector that detects an orientation of the blade and a frame orientation detector that detects an orientation of the frame, wherein the second automatic grade control system automatically controls the orientation of the blade based on the predetermined target mainfall and cross slope, the detected orientation of the blade, and the detected orientation of the frame.