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AssigneeAmazonen-Werke H. Dreyer SE & Co. KG
InventorsDaniel Mertens, Felix Warns, Karl-Peter Hoffmann, Marcus Oldenburger
Estimating the term…
A sowing machine has row units, where each of the row units includes tillage tools and a hydraulic cylinder which applies a coulter pressure upon the tillage tools that is adjustable by a pressure valve. Further, a sensor arrangement includes at least two sensors for producing an electrical signal in connection with a total pressure acting upon the tillage tools of each row unit. In addition, an open-loop or closed-loop control device is connected to the pressure valves and the sensor arrangement and configured to adjust the coulter pressure of each row unit individually and to adapt it on the basis of the electrical signals of the sensor arrangement. In order to create a sowing machine with individual coulter pressure control that is inexpensive to manufacture, a reduced number of sensors is advantageously employed by using a functional relationship.
A sowing machine, comprising:
A method for individually controlling a plurality of coulter pressures, each acting upon tillage tools of a row unit of a sowing machine, where each the coulter pressures is adjustable for each of the row units by a pressure valve positioned upstream of a hydraulic cylinder acting upon said tillage tools and total pressures acting upon at least two of the row units are each detected by a sensor arrangement, where a number and positioning of said row units and at which of the row units the total pressures are detected is known, and an open-loop or closed-loop control unit is connected in a manner for conducting signals to at least said pressure valves and said sensor arrangement, comprising the steps of:
An open-loop or closed-loop control unit for a sowing machine, where said sowing machine comprises a plurality of row units, where said row units are arranged on a frame extending transverse to a direction of travel and each of said row units comprises tillage tools and a hydraulic cylinder that applies a coulter pressure upon said tillage tools, where the coulter pressure acting upon said tillage tools is adjustable by a pressure valve positioned upstream of each said hydraulic, and a sensor arrangement which comprises at least two, sensors which are each configured to produce an electrical signal in connection with a total pressure acting upon said tillage tools of a respective one of the row units, where said open-loop or closed-loop control unit is connected to said pressure valves and said sensor arrangement, wherein said open-loop or closed-loop control unit is configured to:
Dependencies are inferred from the claim text.