Method for controlling valves of a spraying boom of an agricultural spreading machine
AssigneeAmazonen-Werke H. Dreyer SE & Co. KG
InventorMarkus Trentmann
Life of this patent
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Abstract
A method for controlling valves of a spraying boom of an agricultural spreading machine, comprising the steps of: generating valve-specific voltage signals for controlling several valves arranged on the spraying boom and providing the valve-specific voltage signals to the a respective valve, wherein the valve-specific voltage signals are pulse width modulated and each have a valve-specific duty cycle, where the valve-specific duty cycles compensate for or reduce influence, which is dependent on the position of the respective valves on the spraying boom, on the valve-specific flow volume of spraying liquid.
Claims14
A method for controlling valves of a spraying boom of an agricultural spreading machine, comprising:
- generating valve-specific voltage signals for controlling several valves arranged on said spraying boom;
- and
- providing said valve-specific voltage signals to a respective valve of said valves, wherein said valve-specific voltage signals generated are pulse width modulated and each have a valve-specific duty cycle, wherein the duty cycle corresponds to the quotient of the pulse duration and the period duration, where said valve-specific duty cycles compensate for or reduce influence, which is dependent on a position of said respective valves on said spraying boom, on a valve-specific flow volume of spraying liquid, wherein the duty cycles of individual or all voltage signals differ from one another despite an identical nominal valve-specific flow volume of spraying liquid.
A system for controlling valves of a spraying boom of an agricultural spreading machine, comprising:
- a plurality of valves arranged on a spraying boom;
- and
- a control system configured to generate valve-specific voltage signals for controlling said valves and for providing said valve-specific voltage signals to said plurality of valves, wherein
- said control system is configured to generate voltage signals which are pulse width modulated, each of said voltage signals having a valve-specific duty cycle so that influence, which is dependent on the position of said respective valves on said spraying boom, on valve-specific flow volume of spraying liquid is compensated for or reduced, wherein the duty cycle corresponds to the quotient of the pulse duration and the period duration and wherein the duty cycles of individual or all voltage signals differ from one another despite an identical nominal valve-specific flow volume of spraying liquid.
Dependencies are inferred from the claim text.