Deere & Company

Siemens Aktiengesellschaft

Philipp Muench

Benedikt Jung

Barbara Boehm

Tobias Peschke

Daniel Goerges

Rainer Gugel

Norbert Fritz

Florian Reinmuth

Byron Keith Miller

Thomas Floerchinger

Guenther Wolf

John W Regenauer

Jochen Barthel

Markus Bell

Michal Izak

Steven Liu

Timo Hinsberger

Giuliano Constantini

An arrangement for control of the drive speed of a harvester comprises an internal control loop for control of the drive speed of the harvester, to which can be sent a set value and an actual value of a throughput-dependent parameter, and also an external control loop to make available the set value of the throughput-dependent parameter for the internal control loop, to which set and actual values regarding the power output of a drive of the harvester can be sent as input parameters.

Speed control of a harvester

In one example, a system for automatic control of the propulsive speed of a harvesting machine is provided. The system comprises a throughput sensor for determining an expected rate of crop harvested by the harvesting machine in dependence on a position of the harvesting machine and a conversion device configured to calculate a sequence of expected positions of the harvesting machine and, with the expected rate of crop harvested at a position of the harvesting machine, determine a predicted rate of crop harvested by the harvesting machine at the sequence of expected positions of the harvesting machine for use in an optimization problem. Further provided is a speed control device, configured to receive the data relating to the predicted rate of crop harvested at the sequence of expected positions in addition to at least one of data relating the operating state of the harvesting machine, cost function data or secondary condition data, to solve the optimization problem and generate at least one timewise successive sequence of speed commands for setting the propulsive speed of the harvesting machine; and an actuator configured to adjust the propulsive speed of the harvesting machine, the actuator receiving the first speed command of each sequence of speed commands and adjusting the propulsive speed of the harvesting machine.

Model-based predictive speed control of a harvesting machine

A system for automatic control of an operating parameter of a crop transport or processing device of an agricultural harvesting machine includes a sensor configured to detect at least one property of a crop or a parameter affected by the operating property and a control device disposed in communication with the sensor to receive signals therefrom. The control device is operable by means of the signals from the sensor using an algorithm to determine successive control signals for control of an actuator. The control signals affect the operating parameter of the crop transport or processing device that interacts with the sensed crop. An operator interface is included for input of corrective inputs for the operating parameter. The control device is connected to the interface and is operable to override the control signals sent to the actuator by means of the received corrective inputs.

Self-learning system that takes into account corrective inputs for automatic control of an operating parameter of a crop transport or processing device

An arrangement for the control of an actuator () for the adjustment of an adjustable element () of an agricultural work machine () is equipped with a control unit () to produce adjustment signals for the adjustable element () in the sense of moving to a theoretical position, a control arrangement () of the actuator (), coupled with the adjustable element (), which receives the adjustment signals of the control unit (), and a determination device () to make available at least one parameter (&#x3d1;), determined with the aid of recorded vibration characteristics of the system consisting of the adjustable element () and the work machine (). The determination device () can be operated so as to determine at least one parameter (&#x3d1;) at the successively following time points and to supply it to the control unit (). The parameter (&#x3d1;) serves to optimize the regulating behavior of the control unit ().

Automatic determination of the control unit parameters of an arrangement to control an actuator for the adjustment of an adjustable element of an agricultural machine

A method for determining a control parameter of a power or torque distribution regulator for a hybrid drive of a work machine having the steps of automatically determining a work cycle that has just been performed by the work machine, and selecting of the control parameter as a function of the work cycle determined in the previous step.

Method for determining a control parameter of a power or torque distribution regulator for a hybrid drive of a work machine

A hybrid drive includes a combustion engine, a generator driven by the combustion engine, a charge storage unit, and an electric engine. The hybrid drive can be driven in a load point shifting mode, a recuperation mode, and a boost mode. In the load point shifting mode, a power or torque distribution regulator specifies the torques supplied by the combustion engine and the electric engine in the sense of a maintenance of a predetermined theoretical value of the charging state of the charge storage unit. The theoretical value of the charging state of the charge storage unit is shifted in the load point shifting mode, as a function of the charging state changes of the charge storage unit in a previously carried out recuperation or boost mode.

Operating strategy for hybrid vehicles for the implementation of a load point shift, a recuperation and a boost

An energy management system for an agricultural vehicle arrangement includes an electric power supply unit for the supply of a large number of electrical consumers with electric power, and a consumption monitoring unit for the determination of a total energy demand dependent on an actual operating state of the electrical consumers. The consumption monitoring unit undertakes an estimate of the electric power supply available from the electric power supply unit and compares it to the determined total electric power demand in order to reduce the electric power supply to the electrical consumers as a function of assigned supply priorities when the available electric power supply is exceeded by the determined total energy demand. The consumption monitoring unit undertakes a dynamic adaptation of the supply priorities as a function of a changing cooling demand of a vehicle unit that is cooled by means of at least one of the electrical consumers.

Energy management system for an agricultural vehicle arrangement

An arrangement for damping a possible pitching oscillation of a working vehicle supported on the ground by elastic elements is equipped with means to detect an expected and/or existing pitching oscillation of the working vehicle, and a control device, which is connected to the means and to an actuator to influence the propulsion rate of the working vehicle and which can be operated to control the actuator so as to damp the pitching oscillation.

Damping of pitching oscillations of a working vehicle by changing the speed

An arrangement for triggering an actuator for adjusting an adjustable element of an agricultural working machine comprises: a specifying device for generating adjustment commands for the adjustable element; a control arrangement for the actuator; and a signal-shaping unit which, upon receipt of an adjustment command, initially applies a first signal dependent on the adjustment command to the control arrangement, and then applies a second signal, which is dependent on the adjustment command and delayed in time relative to the first signal, the second signal leading to a reduction or cancellation of a natural oscillation generated by the first signal in the system consisting of working machine and element.

Vibration-damping triggering of an actuator for an agricultural working machine

A combine harvester (), has driven wheels or tracks () for moving the combine harvester; a system for detecting characteristics of crop plants () in front of the combine harvester and for calculating an expected mass throughput of the combine harvester from the detected physical characteristics; an electronic control (), configured to control the ground speed of the combine harvester to maintain a desired mass throughput of the combine harvester in consideration of the expected mass throughput of the combine harvester; and a sensor () for detecting a combine harvester parameter that is indicative of an actual mass throughput of the combine harvester; wherein the electronic control is configured to compare an output value of the sensor to a value indicating the expected mass throughput and to use a result of the comparison as feedback to control the speed of the combine harvester.

Harvester with predictive ground speed regulation

Methods and configurations controlling a converter having controllable power semiconductors, compare actual and target state values to obtain control difference values for a control unit producing setting voltage values. Control electronics provide control signals according to setting voltage values and transmit them to power semiconductors. The control unit generates voltage values so control difference values become small. Current and converter energy controls and energy balancing are performed jointly, actual state values are calculated by an observing unit based on setting voltage values considering measured current values and actual state intermediate-circuit energy values are calculated by an estimating unit considering measured intermediate-circuit energy values of positive and negative voltage sources. The observing and estimating units model the converter so actual state current and intermediate-circuit steady-state energy values correspond to error-free current and intermediate-circuit energy values. A periodic time-variant gain controller receives error-free values.

Control of a modular converter having distributed energy stores with the aid of an observer for the currents and an estimating unit for the intermediate circuit energy

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Kaiserslautern, Germany

Philipp Muench