US 12,000,109 B2
Scraper control method
Michael D. Peat, Dubuque, IA (US); and Francois Stander, Dubuque, IA (US)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on Aug. 25, 2021, as Appl. No. 17/445,884.
Prior Publication US 2023/0066877 A1, Mar. 2, 2023
Int. Cl. E02F 3/65 (2006.01); E02F 3/64 (2006.01)
CPC E02F 3/652 (2013.01) [E02F 3/6481 (2013.01); E02F 3/651 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A control method to operate a scraper over ground, the scraper having a first actuator coupled to a front portion of a bowl and a second actuator coupled to a rear portion of the bowl, the control method comprising:
receiving a signal indicative of a desired attack angle between a cutting edge of the scraper and the ground;
receiving a height control signal, from an operator interface, to control a cutting edge height;
receiving one or more measuring signals from one or more sensors;
calculating a measured attack angle based on the one or more measuring signals;
comparing the measured attack angle and the desired attack angle;
outputting at least one control signal commanding movement of the bowl of the scraper based on the height control signal and a result of the comparing the measured attack angle and the desired attack angle; and
in response to the at least one control signal, extending or retracting at least one of the first actuator coupled to the front portion of the bowl and the second actuator coupled to the rear portion of the bowl to move the bowl.