Method and device for performing a control, in particular for use in a motor vehicle

摘要

A method for operating a boost pressure control in an engine system having a supercharged internal combustion engine, including the following: performing a boost pressure control based on a setpoint controller variable and an actual controller variable, ascertaining a setpoint controller variable from a provided setpoint boost pressure with a first and a second model, ascertaining an intermediate variable from a provided actual boost pressure with the first model, correcting the intermediate variable with a provided dynamic variable, which represents a dynamic change in the state of the engine system using a higher dynamics than the actual boost pressure, and ascertaining the actual controller variable from the corrected intermediate variable with the second model.

主权项

1. A method by a control unit of an engine system, the engine system including a supercharged internal combustion engine, the method comprising:
obtaining, by the control unit, a value of an actual boost pressure in the engine system based on first output of a sensor arrangement; obtaining, by the control unit and based on second output of the sensor arrangement, a value of a dynamic variable that more quickly responds to a dynamic change in a state of the engine system than does the actual boost pressure; applying, by the control unit, the obtained actual boost pressure value as input to a first function, which produces a first intermediate variable value based on the input actual boost pressure value; correcting, by the control unit, the intermediate variable value based on the obtained value of the dynamic variable; applying, by the control unit, the corrected intermediate variable value as input to a second function, which produces a first controller variable value based on the input corrected intermediate variable value; obtaining, by the control unit, a setpoint boost pressure value; applying, by the control unit, the obtained setpoint boost pressure value as input to the first function, which produces a second intermediate variable value based on the input setpoint boost pressure value; applying, by the control unit, the second intermediate variable value as input to the second function, which produces a second controller variable value based on the input second intermediate variable value; and controlling, by the control unit, the boost pressure in the engine system based on the first and second controller variables.