Robert Boschgmbh

Robert Bosch Gmbh

Adrian Trachte

Carolina Passenberg

Steffen Mutschler

Alexandre Wagner

Andreas Kugi

Daniel Seiler-Thull

Michael Hilsch

Matthias Bitzer

Steffen Joos

Wolfgang Kemmetmueller

Knut Graichen

Michael Herman

Benedikt Alt

Christian Fleck

Herwig Koppauer

Patrik Zips

Thomas Specker

Julian Ophey

Derya Lindenmeier

Peter Altermann

Muhammed Atak

Paul Zeman

Martin Wegscheider

Markus Gurtner

A method is for ascertaining control model parameters of a control model of an axial piston pump. The method models at least one control variable of an adjustment unit of the axial piston pump as a function of operating variables. Operating points of the axial piston pump each are characterized by operating values of the operating variables. The method includes (i) providing initial control model parameters of the control model and an operating state set including a plurality of initial first operating points, (ii) providing initial safety model parameters of a safety model based on a safety set including a plurality of initial second operating points and associated safety values, and (iii) determining a further operating point which is not yet included in the operating state set. The further operating point is determined such that a variance of the control model is maximized.

Method for determining control model parameters of a control model of an axial piston pump

A method is for producing, for a hydraulic machine having an actuator, a setpoint-value trajectory satisfying predefined limitations in order to influence an output variable of the hydraulic machine. A trajectory of unlimited setpoint values is fed to a trajectory planning function, which produces the setpoint-value trajectory from the trajectory of unlimited setpoint values. In the trajectory planning function, the trajectory of unlimited setpoint values is differentiated at least twice in order to obtain a trajectory of unlimited setpoint values that is differentiated n times. In the trajectory planning function, at least one limitation is applied to the differentiated trajectory of unlimited setpoint values in order to obtain a differentiated trajectory of limited setpoint values. The differentiated trajectory of limited setpoint values is fed to a filter integrator chain in order to obtain the setpoint-value trajectory.

Real-time-capable trajectory planning for pivoting-plate-type axial piston pumps with systematic consideration of system limitations

A control system for a motor vehicle, for outputting a controlled variable, with the aid of which a directly controlled variable of a motor vehicle is adjustable via suitable control operations, in order to adapt the directly controlled variable to a reference variable of the control system. The control system includes a controller, which is configured to output a first output variable on the basis of the directly controlled variable of the motor vehicle, and on the basis of the reference variable of the control system. The control system further includes a predictive model, which may be trained to output a second output variable that reflects a deviation of a driving behavior of a driver of the motor vehicle from the first output variable of the controller. The controlled variable of the control system encompasses an addition of the first output variable and the second output variable.

Control system for a motor vehicle and method for adapting the control system

The invention relates to a control circuit () for a waste heat recovery system () for a heat engine (). The waste heat recovery system () comprises at least one evaporator () for converting waste heat from the exhaust gas () generated by the heat engine () into a working medium (), at least one expansion machine () which can be driven by the working medium (), at least one condenser () for condensing the working medium () expanded in the expansion machine () into the liquid state (), and at least one conveying device () for increasing the pressure of the condensed working medium () and conveying same into the evaporator (). The control circuit () influences at least one control variable which controls the energy transmission from the exhaust gas () to the working medium () and/or the energy transmission from the working medium () to the expansion machine (). The control circuit () is designed to regulate the specific enthalpy hand/or the temperature Tof the working medium () entering the expansion machine () to a target value h, T, wherein the target value h, Tdepends on the pressure pof the working medium () entering the expansion machine (). The invention also relates to a waste heat recovery system () for an internal combustion engine of a vehicle () in the form of a heat engine () comprising the control circuit () and to a corresponding computer program.

Control circuit for waste heat recovery systems

A method for assessing a control loop. In the method, the control loop is assigned one degree of fulfillment each with respect to at least three quality criteria. The surface area of a polygon having a geometry defined by the degrees of fulfillment is determined. An overall control quality of the control loop is evaluated on the basis of the surface area.

Method and device for assessing a control loop

The invention relates to a method for generating a control variable trajectory for an actuator so as to influence an input variable of a system, wherein a set point is supplied to the output variable of the system of a trajectory planning procedure, which from the set point generates a trajectory of constrained input values for a filter integrator chain and a trajectory of flat desired states, wherein the trajectory of constrained input values and the trajectory of flat desired states are supplied to a flatness-based feedforward control procedure that generates therefrom the control variable trajectory for the actuator, wherein in the trajectory planning procedure so as to generate the trajectory of constrained input values at least one constraint is applied in dependence upon the trajectory of flat desired states.

Real-time capable control strategy for hydraulic systems while systematically taking into consideration control (rate) and state variable constraints

A method for operating an axial piston machine of swashplate design, in which a swashplate is settable by means of an adjustment device, and in which a controlled variable of the axial piston machine is regulated by predetermining a manipulated variable. Under the assumption of a constant intended value of the controlled variable, a future profile of the controlled variable is ascertained using a model of the axial piston machine in which respective current values of at least one operating variable of the axial piston machine, which comprises the controlled variable, and a current value of the manipulated variable are taken into account. A value to be set for the manipulated variable is ascertained and set taking into account the future profile of the controlled variable.

Method for operating an axial piston machine of swashplate design

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Stuttgart, Germany

Adrian Trachte