Abstract:
A method for controlling an agricultural vehicle system when moving along a course of travel over a field providing a field model correlating a field characteristic, e.g. a farmland condition such as farmland slope, or a crop condition such as crop density or moisture, to a specific location in the field, from the field model and at least one previously obtained value for the field characteristic, predicting a value for the field characteristic in front of the agricultural vehicle system thus obtaining an anticipated field characteristic, and; controlling the agricultural vehicle system at least partly in response to the anticipated field characteristic.
Abstract:
Apparatus for controlling the speed of a combine harvester (10) includes one or more sensors (48) each generating one or more signals that correspond during use of the combine harvester to variables of a harvesting process. The apparatus further includes a processor and one or more control devices operatively connected in a feedback arrangement including two loops. In a first loop, a first signal (28) corresponding to the ground speed of the combine harvester (10) is fed back as an input to a first control device (42) that is capable of adjusting the ground speed relative to a set value. In a second loop, the first signal (28) is fed together with a second signal (34) indicative of the flow rate of crop through the combine harvester to a second control device (32) that generates as a third signal (31) the set value, the third signal being input to the first control device (42).
Abstract:
A square baler comprising a controller for controlling the operation of the baler in dependence on the first, second and third signals representing the mass of a bale, the force of the piston of the baler, the energization of the actuator respectively and an input target value for the mass of the bale wherein the first signal is fed back in a first control loop and compared with the target weight to generate a target force, the second signal is fed in a second control loop and compared with the target force to generate a target energization, the third signal is fed in a third control loop and compared with the target energization to control the energization of the actuator.
Abstract:
The present invention provides a method for controlling an agricultural vehicle system when moving along a course of travel over a field. The method comprises: providing (190) a field model correlating a field characteristic, e.g. a farmland condition such as farmland slope, or a crop condition such as crop density or moisture, to a specific location in the field, for example indicated by x and y coordinates; from the field model and at least one previously obtained value for the field characteristic, predicting (191) a value for the field characteristic in front of the agricultural vehicle system thus obtaining an anticipated field characteristic, and; controlling (192) the agricultural vehicle system at least partly in response to the anticipated field characteristic. In accordance with embodiments of the present invention, providing (190) a field model correlating a field characteristic to a specific location in the field includes assuming that the field characteristic varies in a continuous manner.
Abstract:
A square baler comprising a controller for controlling the operation of the baler in dependence on the first, second and third signals representing the mass of a bale, the force of the piston of the baler, the energization of the actuator respectively and an input target value for the mass of the bale wherein the first signal is fed back in a first control loop and compared with the target weight to generate a target force, the second signal is fed in a second control loop and compared with the target force to generate a target energization, the third signal is fed in a third control loop and compared with the target energization to control the energization of the actuator.
Abstract:
Apparatus for controlling the speed of a combine harvester (10) comprises one or more sensors (48) each generating one or more signals that correspond during use of the combine harvester to variables of a harvesting process; a processor; and one or more control devices operatively connected in a feedback arrangement comprising two loops in a first of which a first said signal (28) corresponding to the ground speed of the combine harvester (10) is fed back as an input to a first said control device (42) that is capable of adjusting the said ground speed relative to a set value; and in a second of which the said first signal (28) is fed together with a second said signal (34) indicative of the flow rate of crop through the combine harvester to a second said control device (32) that generates as a third signal (31) the said set value, the third signal being input to the first said control device (42).