Systems, methods, and devices for controlling a movement of a dipper

• US 8,688,334 B2
• Filed: 09/23/2013
• Issued: 04/01/2014
• Est. Priority Date: 08/30/2011
• Status: Active Grant

• Current Assignee: Joy Global Surface Mining Inc. (Mitsui & Company Limited)
• Original Assignee: Harnischfeger Technologies Inc. (Mitsui & Company Limited)
• Inventors: Taylor, Wesley P.
• Primary Examiner(s): PEZZUTO, ROBERT ERIC
• Application Number:
  US14/033,646
• Publication Number:
  US 20140025265A1
• Time in Patent Office: 190 Days
• Field of Search: 373/47, 373/48, 374/66, 374/68, 37395-399, 414/690, 414/718, 414/728, 172 2- 11, 701/50
• US Class Current: 701/50
• CPC Class Codes: E02F 3/435 for dipper-arms, backhoes or the like
• CPC Class Codes: E02F 3/437 providing automatic sequences of movements, e.g. linear excavation, keeping dipper angle constant
• CPC Class Codes: E02F 3/46 with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor E02F3/205, E02F3/905 take precedence

Abstract

Systems, methods, and devices for controlling an industrial machine. The industrial machine includes, for example, a dipper, a boom, a hoist motor, a crowd motor, one or more operator control devices, and a controller. The control devices are configured to be manually controllable by an operator of the industrial machine. The controller receives an output signal associated with a desired movement of the dipper, receives a signal associated with a hoist motor characteristic, and receives a signal associated with a crowd motor characteristic. The controller determines a present position of the dipper with respect to a boom profile, determines a first future position of the dipper with respect to the boom profile and based on the output signal from the operator control devices, and automatically controls a movement of the dipper with respect to the boom profile when the first future position of the dipper approximately corresponds to a boom profile limit.

Claims

1. A controller for an industrial machine, the controller comprising:

an input/output module configured to

receive an operator control signal associated with a desired movement of a dipper,

receive a hoist motor characteristic signal, and

receive a crowd motor characteristic signal; and

a processing device configured to

calculate a first future position of the dipper with respect to a digging profile based on the operator control signal and a present position of the dipper,

calculate a second future position of the dipper with respect to the digging profile based on the present position of the dipper, the hoist motor characteristic signal, and the crowd motor characteristic signal, and

generate a hoist drive signal for a hoist drive module and a crowd drive signal for a crowd drive module, the hoist drive signal and the crowd drive signal associated with a movement of the dipper to the second future position when the first future position of the dipper approximately corresponds to a limit of the digging profile.

2. The controller of claim 1, wherein the hoist motor characteristic signal is associated with a rotations per minute (“

RPM”

) of a hoist motor, and the crowd motor characteristic signal is associated with an RPM of a crowd motor.

3. The controller of claim 1, wherein the second future position of the dipper is different than the first future position of the dipper.

4. The controller of claim 3, wherein the second future position of the dipper corresponds to a tuck position associated with a beginning of a digging cycle of the industrial machine.