Automatic Swing and Radius Control System and Method for a Machine Implement

Abstract

Systems and methods are provided for automatically controlling operation of an implement provided on a machine. A swing angle of an arm on which the implement is provided may be controlled by determining actual and desired swing angles, generating a swing angle error, and automatically operating actuators on the machine to align the implement along the desired swing angle. An effective radius of the implement assembly may similarly be controlled by determining actual and desired effective radii, generating a radius error, and automatically operating actuators on the machine to move the implement to the desired effective radius.

Description

TECHNICAL FIELD[0001]The present disclosure generally relates to systems and methods for controlling machines having implements, and more particularly to systems and methods of automatically operating machines to align implements with target positions.BACKGROUND[0002]Machines such as, for example, backhoes, excavators, dozers, loaders, motor graders, and other types of heavy equipment use multiple actuators supplied with hydraulic fluid from an engine-driven pump to accomplish a variety of tasks. The actuators (e.g., hydraulic cylinders and motors) are used to move linkage members and implements on the machines including, for example, a boom, a stick, and a bucket. An operator controls movements of the actuators by moving one or more input devices, for example joysticks. Joystick movement manipulates a control valve associated with each actuator to control movement of the boom and stick to position or orient the bucket to perform a task. Typical operator control permits individual c...

AI Technical Summary

Benefits of technology

The patent text describes methods and systems for automatically controlling the swing angle and effective radius of an arm on a machine so that an implement coupled to the arm is positioned along a desired swing angle that intersects a target point. The systems include a swing actuator and a controller that determine the actual position of the machine reference points, the target position, and the actual swing angle or effective radius, and operate the swing actuator to reduce any errors between the actual and desired position. The technical effects of this disclosure include improved accuracy and efficiency in the positioning of the implement, thereby increasing the efficiency and accuracy of the overall operation of the machine.

Problems solved by technology

Typical operator control suffers several drawbacks due to the complex coordination required to maneuver the implement, especially when the implement is attached to a linkage system that allows implement movement about three or more degrees of freedom.

Even experienced operators may lack the necessary skill to precisely complete complex tasks.

Further, operators of all skill levels may become inefficient due to fatigue or boredom when completing routine or repetitive tasks.

While the machine of the '264 patent may help ensure the mechanical arm follows a particular path, the '264 patent may be limited because it fails to simplify typical complex operator input controls used to position the mechanical arm, and may be limited to use in a selected number of predetermined implement paths.

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