Rotation control system for material handling machines
First Claim
1. A rotation control system for a material handling machine, comprising:
- a boom;
a work tool coupled to the boom;
a swing motor configured to swing the boom and the work tool;
a work tool motor configured to rotate the work tool relative to the boom;
at least one input device configured to generate a first signal indicative of desired swinging of the boom and a second signal indicative of a desired rotation of the work tool; and
a controller in communication with the at least one input device, the swing motor, and the work tool motor, the controller being configured to;
actuate the work tool motor based only on the second signal during a first mode of operation; and
actuate the work tool motor based on swinging of the boom during a second mode of operation to semi-autonomously synchronize rotation of the work tool with the swinging of the boom, wherein the actuation of the work tool motor to synchronize rotation of the work tool with the swinging of the boom occurs during the swinging of the boom.
1 Assignment
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Accused Products
Abstract
A rotation control system may be provided for a material handling machine. The rotation control system may include a boom and a work tool attached to the boom. A swing motor may be capable of swinging the boom and the work tool. A work tool motor may be capable of rotating the work tool relative to the boom. An input device may generate a first signal indicative of a desired swinging of the boom and a second signal indicative of a desired rotation of the work tool. A controller may be in communication with the input device, the swing motor, and the work tool motor. The controller may be capable of actuating the work tool motor based only on the second signal during a first mode of operation and may be capable of actuating the work tool motor based on swinging of the boom during a second mode of operation.
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Citations
20 Claims
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1. A rotation control system for a material handling machine, comprising:
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a boom; a work tool coupled to the boom; a swing motor configured to swing the boom and the work tool; a work tool motor configured to rotate the work tool relative to the boom; at least one input device configured to generate a first signal indicative of desired swinging of the boom and a second signal indicative of a desired rotation of the work tool; and a controller in communication with the at least one input device, the swing motor, and the work tool motor, the controller being configured to; actuate the work tool motor based only on the second signal during a first mode of operation; and actuate the work tool motor based on swinging of the boom during a second mode of operation to semi-autonomously synchronize rotation of the work tool with the swinging of the boom, wherein the actuation of the work tool motor to synchronize rotation of the work tool with the swinging of the boom occurs during the swinging of the boom. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of controlling rotation of a material handling machine, comprising:
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receiving, at a controller, a first signal indicative of swinging of a boom; receiving, at the controller, a second signal indicative of a desire to move a work tool connected to the boom; controlling rotation of the work tool based on only the second signal during a first mode of operation; and controlling, using the controller, rotation of the work tool based on the first signal during a second mode of operation to semi-autonomously synchronize rotation of the work tool with the swinging of the boom, wherein the rotation of the work tool to synchronize rotation of the work tool with the swinging of the boom occurs during the swinging of the boom. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A rotation control system for a material handling machine, comprising:
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an undercarriage; a frame rotatably connected to the undercarriage; an operator station mounted to the frame; a boom operably attached to the frame and configured to pivot vertically; a swing motor configured to swing the frame and boom relative to the undercarriage; a work tool rotatably coupled to the boom; a work tool motor configured to rotate the work tool; at least one input device configured to generate a first signal indicative of desired swinging of the frame and boom and a second signal indicative of a desired rotation of the work tool; and a controller in communication with the at least one input device, the swing motor, and the work tool motor, the controller being configured to; actuate the work tool motor based only on the second signal during a first mode of operation; actuate the work tool motor based on swinging of the boom during a second mode of operation to semi-autonomously synchronize rotation of the work tool with the swinging of the boom, wherein the actuation of the work tool motor to synchronize rotation of the work tool with the swinging of the boom occurs during the swinging of the boom; and actuate the work tool motor based on a rotation ratio during a third mode of operation. - View Dependent Claims (18, 19, 20)
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Specification