Abstract: An apparatus and method for closed-loop-control of a fluid conveying system that include at least one pump, at least one consumer, at least one controller valve, and at least one armature as an actuator of the at least one control valve. Pressure and volume flow rate of the consumer are controlled independently of each other by a decoupling controller.

Abstract: A pedal system for a motor vehicle, such as an accelerator pedal system, includes an elastic coupling element, a control unit, a pedal lever, and an actuator. The elastic coupling element is operatively positioned between the pedal lever and the actuator, and has a relatively low stiffness. The control unit is configured to control the actuator. The elastic coupling element is configured to damp brief force and/or torque fluctuations occurring in, for example, the actuator, such that said force and/or torque fluctuations are not transmitted to the pedal lever. A spring deflection of the elastic coupling element, in a direction of force applied to the pedal lever, operates as a control variable for controlling the actuator. A method relates to controlling such a haptic accelerator pedal and a correspondingly configured control unit.

Abstract: A unit for estimating a rotational speed of a turbocharger is provided. The unit includes a microprocessor comprising input ports configured for receiving measurement signals from an exhaust gas flow control system of an internal combustion engine and an output port for outputting a signal indicative of the rotational speed of the turbocharger. The input ports are adapted to receive a first set of measurement signals and a second set of measurement signals. A microprocessor is configured to calculate an estimated rotational speed of the turbocharger using a turbocharger model, based on the first set of measurement signals and the second set of measurement signals. Rhe second set of measurement signals include signals indicative of a pressure difference across a turbine of the turbocharger.

Abstract: A unit for estimating a rotational speed of a turbocharger is provided. The unit includes a microprocessor comprising input ports configured for receiving measurement signals from an exhaust gas flow control system of an internal combustion engine and an output port for outputting a signal indicative of the rotational speed of the turbocharger. The input ports are adapted to receive a first set of measurement signals and a second set of measurement signals. A microprocessor is configured to calculate an estimated rotational speed of the turbocharger using a turbocharger model, based on the first set of measurement signals and the second set of measurement signals. The second set of measurement signals include signals indicative of a pressure difference across a turbine of the turbocharger.

Abstract: In a method or apparatus for closed-loop-control of a fluid conveying system, at least one pump, at least one consumer, at least one controller valve, and at least one armature as an actuator of said control valve are provided. Pressure and volume flow rate of the consumer are controlled independently of each other by means of a decoupling controller.

Abstract: A combustion engine evaluation unit is provided that includes, but is not limited to a microcontroller receiving measurement signals from a gas flow control system and outputting a state signal of the gas flow control system. The microcontroller includes, but is not limited to input ports for receiving as first set of measurement signals. Furthermore, the microcontroller includes, but not limited to input ports for receiving as a second set of measurement signals. The microcontroller is configured to calculate a first set of predicted values with a gas flow model based on the first set of measurement signals and calculate a second set of predicted values with a nominal model based on the second set of measurement signals. The microcontroller is also configured to generate the state signal based on a comparison of the first set of predicted values with the second set of predicted values.

Abstract: An evaluation unit is provided that includes, but is not limited to a microprocessor for receiving measurement signals from a gas flow control system of a combustion engine and for outputting a state signal indicating a state of the gas flow control system. A first set of measurement signals includes, but is not limited to a signal of a pressure upstream of a turbocharger and a signal of a pressure downstream of a turbocharger. A second set of measurement signal includes, but is not limited to a motor revolution speed. The microprocessor calculates first predicted values using a turbocharger model based on the first set of measurement signals and calculate a second predicted values using a nominal model based on the second set of measurement signals. The microprocessor further generates the state signal with a comparison of the first predicted values with the second predicted values.

Abstract: A steering system for a vehicle has a steering operating device, an operating moment sensor which is assigned to the steering operating device and which senses the operating moment exercised on the steering operating device and generates a corresponding signal, and a steering angle sensor which senses a steering angle corresponding to the alignment of the steerable wheels and supplies a corresponding signal to a control unit which, in turn, determines a pertaining desired angle of the steering operating device. The control unit is constructed in order to process the signal generated by the operating moment sensor and emit an assigned desired steering moment or an assigned desired steering force. A steering device, which is mechanically uncoupled from the steering operating device, sets the desired steering moment or the desired steering force at the steerable wheels. A feedback unit is provided for setting the determined desired angle at the steering operating device.