Control system for a machine

Patent metadata

Field	Value
Publication number	US-10480157-B2
Application number	US-201615258620-A
Country	US
Kind code	B2
Filing date	Sep 7, 2016
Priority date	Sep 7, 2016
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A system for controlling operation of a first material engaging work implement includes a first machine, a second machine, and a controller. The controller is configured to store a kinematic model and characteristics of the implement system, determine a second machine operation zone, with the second machine operation zone being defined by a material movement plan of the second machine, and determine a current pose of the first machine. The controller is further configured to determine a first machine operation zone based upon the pose of the first machine, the kinematic model and characteristics of the implement system, and the second machine operation zone, with the first machine operation zone being spaced from the second machine operation zone, and generate a plurality of command signals to move the first material engaging work implement within the first machine operation zone between a first position and a second position.

First claim

The invention claimed is:

1. A system for controlling operation of a first material engaging work implement comprising:
a first machine including:
a first ground engaging drive mechanism to propel the first machine;
a base mounted on the first ground engaging drive mechanism, the base including an implement system having a linkage assembly with a boom and the first material engaging work implement, the base being rotatable relative to the first ground engaging drive mechanism;
a first machine pose sensor for generating first machine pose signals indicative of a pose of the first machine;

a second machine including:
a second ground engaging drive mechanism to propel the second machine;
a second material engaging work implement; and

a controller configured to:
store a kinematic model and characteristics of the implement system of the first machine;
determine a second machine operation zone, the second machine operation zone being defined by a material movement plan of the second machine and including a current location and planned locations of the second machine;
determine a current pose of the first machine based upon the first machine pose signals, the current pose of the first machine and the kinematic model and characteristics of the implement system of the first machine defining a range of operation of the first material engaging work implement of the first machine;
while the second machine operation zone is within the range of operation of the first material engaging work implement of the first machine, determine a first machine operation zone of the first material engaging work implement based upon the current pose of the first machine, the kinematic model and characteristics of the implement system, and the second machine operation zone, the first machine operation zone being within the range of operation and spaced from the second machine operation zone; and
generate a plurality of command signals to move the first material engaging work implement within the first machine operation zone between a first position and a second position while avoiding passing through the second machine operating zone.

2. The system of claim 1 , wherein the first position is a dig location and the second position is a dump location.

3. The system of claim 2 , wherein the controller is further configured to:
store a first dig location, the first dig location corresponding to the dig location and being within the second machine operation zone;
generate first dig command signals to move the first material engaging work implement from the first dig location to the dump location;
generate dump command signals to dump a load of material carried by the first material engaging work implement at the dump location; and
generate command signals to move the first material engaging work implement from the dump location to a second dig location.

4. The system of claim 2 , wherein the controller is further configured to:
store a first dump location, the first dump location corresponding to the dump location and being within the second machine operation zone;
generate dig command signals to move the first material engaging work implement from the dig location to the first dump location;
generate dump command signals to dump a load of material carried by the first material engaging work implement at the first dump location; and
generate command signals to move the first material engaging work implement from the dump location to a second dig location.

5. The system of claim 1 , wherein the material movement plan of the second machine is based upon input from an operator of the first machine.

6. The system of claim 5 , wherein the controller is configured to operate in a learning mode and receive instructions from an operator during a material movement operation.

7. The system of claim 1 , wherein the material movement plan of the second machine is based upon input from a perception system.

8. The system of claim 7 , wherein the perception system is mounted on the first machine.

9. The system of claim 1 , wherein the material movement plan of the second machine is based upon a material movement plan of the first machine.

10. The system of claim 9 , wherein the material movement plan of the second machine is based upon operation of the first machine through a predetermined number of material movement cycles.

11. The system of claim 9 , wherein the material movement plan of the second machine is further based upon material characteristics of material being moved by the first machine.

12. The system of claim 1 , wherein the controller is further configured to autonomously generate the material movement plan of the second machine and communicate the material movement plan of the second machine to the second machine.

13. The system of claim 1 , wherein the second machine further includes a second machine pose sensor for generating second machine pose signals indicative of a current pose of the second machine, and the second machine operation zone being further defined by a current pose of the second machine.

14. A method of controlling operation of a first material engaging work implement comprising:
providing a first machine including a first ground engaging drive mechanism to propel the first machine, a base mounted on the first ground engaging drive mechanism, the base including an implement system having a linkage assembly with a boom and the first material engaging work implement, the base being rotatable relative to the first ground engaging drive mechanism;
providing a second machine including a second ground engaging drive mechanism to propel the second machine and a second material engaging work implement;
storing a kinematic model and characteristics of the implement system of the first machine;
determining a second machine operation zone, the second machine operation zone being defined by a material movement plan of the second machine and including a current location and planned locations of the second machine;
determining a current pose of the first machine based upon first machine pose signals generated by a first machine pose sensor, the current pose of the first machine and the kinematic model and characteristics of the implement system of the first machine defining a range of operation of the first material engaging work implement of the first machine;
while the second machine operation zone is within the range of operation of the first material engaging work implement of the first machine, determining a first machine operation zone of the first material engaging work implement based upon the current pose of the first machine, the kinematic model and characteristics of the implement system, and the second machine operation zone, the first machine operation zone being within the range of operation and spaced from the second machine operation zone; and
generating a plurality of command signals to move the first material engaging work implement within the first machine operation zone between a first position and a second position while avoiding passing through the second machine operating zone.

15. The method of claim 14 , wherein the first position is a dig location and the second position is a dump location.

16. The method of claim 15 , further including determining a current pose of the second machine based upon second machine pose signals generated by a second machine pose sensor and defining the second machine operation zone based upon the current pose of the second machine.

17. A machine for use with a second machine, the second machine including a second ground en

Assignees

• Caterpillar Inc

Inventors

• Friend Paul
• Stratton Kenneth L

Classifications

• E02F9/265

  with follow-up actions (e.g. control signals sent to actuate the work tool) · CPC title

• E02F9/2054 Primary

  Fleet management · CPC title

• E02F3/7604

  Combinations of scraper blades with soil loosening tools working independently of scraper blades (soil loosening attachments fixed on blades E02F3/8152, E02F3/8155) · CPC title

• E02F3/308

  working outwardly · CPC title

• E02F9/205

  Remotely operated machines, e.g. unmanned vehicles (E02F3/8866 takes precedence) · CPC title