Swing control algorithm for hydraulic circuit
First Claim
1. A fluid control system operative to control rotational movement of a swing structure and movement of at least one implement, the fluid control system comprising:
- a pump;
a tank;
an actuator including a working chamber;
a valve assembly configured to control fluid communication between the working chamber and the tank and to control fluid communication between the working chamber and the pump;
an input device operative to selectively control movement of the swing structure; and
a controller in communication with the valve assembly and the input device, the controller being configured to control a flow condition of the working chamber through a sensed pressure condition of the working chamber and a command from the input device corresponding with a desired pressure of the working chamber.
2 Assignments
0 Petitions
Accused Products
Abstract
A fluid control system may comprise a pump, a tank, and an actuator including a working chamber. The system may be operative to control rotational movement of a swing structure and movement of an least one implement. A valve assembly may be configured to control fluid communication between the working chamber and the tank and to control fluid communication between the working chamber and the pump. An input device may be operative to selectively control movement of the swing structure. The system may include a controller in communication with the valve assembly and the input device. The controller may be configured to control a flow condition of the working chamber through a sensed pressure condition of the working chamber and a command from the input device.
58 Citations
21 Claims
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1. A fluid control system operative to control rotational movement of a swing structure and movement of at least one implement, the fluid control system comprising:
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a pump;
a tank;
an actuator including a working chamber;
a valve assembly configured to control fluid communication between the working chamber and the tank and to control fluid communication between the working chamber and the pump;
an input device operative to selectively control movement of the swing structure; and
a controller in communication with the valve assembly and the input device, the controller being configured to control a flow condition of the working chamber through a sensed pressure condition of the working chamber and a command from the input device corresponding with a desired pressure of the working chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for controlling a hydraulic system, comprising:
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receiving an input command from an input device;
generating a desired pressure value based on the input command;
generating a flow limit based on the input command; and
causing incremental movement of an actuator, a magnitude of the movement over a predetermined time interval being based on the desired pressure value and the flow limit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification