System and method for moving spans of an irrigation system
First Claim
1. A method of moving at least two irrigation spans across a ground surface of a field, at least one tower supporting the spans, the at least one tower having a wheel driven by a drive motor controlled by a drive motor control, the method implemented on a movement modification device comprising:
- receiving an initial movement control signal corresponding to a user-selected fluid application rate indicating a rate of movement for the span;
determining the user-selected fluid application rate from the initial movement control signal;
determining a position of at least one span in the field;
modifying the initial movement control signal to a modified movement control signal according to a predetermined modification factor, a value of the modification factor varying according to a position of the span in the field such that the modification factor varies among span positions; and
sending the modified movement control signal to the drive motor control to thereby modify the rate of movement of the span.
1 Assignment
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Accused Products
Abstract
A method of moving at least two irrigation spans across a ground surface of a field may include receiving an initial movement control signal corresponding to a user-selected fluid application rate, determining the user-selected fluid application rate from the initial movement control signal, determining a position of at least one span in the field, modifying the initial movement control signal to a modified movement control signal according to a predetermined modification factor, with a value of the modification factor varying according to a position of the span in the field such that the modification factor varies among span positions, and sending the modified movement control signal to the drive motor control. A system is also disclosed.
34 Citations
15 Claims
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1. A method of moving at least two irrigation spans across a ground surface of a field, at least one tower supporting the spans, the at least one tower having a wheel driven by a drive motor controlled by a drive motor control, the method implemented on a movement modification device comprising:
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receiving an initial movement control signal corresponding to a user-selected fluid application rate indicating a rate of movement for the span; determining the user-selected fluid application rate from the initial movement control signal; determining a position of at least one span in the field; modifying the initial movement control signal to a modified movement control signal according to a predetermined modification factor, a value of the modification factor varying according to a position of the span in the field such that the modification factor varies among span positions; and sending the modified movement control signal to the drive motor control to thereby modify the rate of movement of the span. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An irrigation system comprising:
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at least two irrigation spans for moving across a ground surface of a field; at least one tower supporting the spans; a wheel mounted on the at least one tower; a drive motor connected to the wheel to rotate the wheel; a drive motor control controlling power to the drive motor; and a movement modification device mounted on one of the spans, the movement modification device being configured to; receive an initial movement control signal corresponding to a user-selected fluid application rate indicating a rate of movement for the span; determine the user-selected fluid application rate from the initial movement control signal; determine a position of at least one span in the field; modify the initial movement control signal to a modified movement control signal according to a predetermined modification factor, a value of the modification factor varying according to a position of the span in the field such that the modification factor varies among span positions, a plurality of values of the modification factor being stored in a position table in a storage of the movement modification device, the table including a plurality of position values and values of the modification factor corresponding to the position values; and send the modified movement control signal to the drive motor control to thereby modify the rate of movement of the span. - View Dependent Claims (12, 13, 14, 15)
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Specification