AUTOMATIC BLADE SLOPE CONTROL SYSTEM FOR AN EARTH MOVING MACHINE
摘要
The slope angle of a blade on an earthmoving machine is automatically controlled based on measurements from a three-axis gyroscope, a blade slope angle tilt sensor, and a blade tip angle tilt sensor mounted on the blade. A three-axis gyroscope has high dynamic response and high resistance to mechanical disturbances but is subject to potentially unbounded errors. A tilt sensor has bounded errors but has a slow dynamic response and a high sensitivity to mechanical disturbances. The combination of a three-axis gyroscope and two tilt sensors provides an advantageous measurement system. Algorithms for performing proper fusion of the measurements account for the lack of synchronization between the three-axis gyroscope and the tilt sensors and also screen out invalid measurements from the tilt sensors. The blade slope angle is controlled based on a reference blade slope angle and an estimate of the blade slope angle computed from properly fused measurements.
申请公布号
EP2686491(A1)
申请公布日期
2014.01.22
申请号
EP20110746053
申请日期
2011.08.12
申请人
TOPCON POSITIONING SYSTEMS, INC.
发明人
KONNO, HIROYUKI;BRABEC, VERNON, JOSEPH;GRAHAM, RENARD, TOMAS