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 thermal sub-system for a fuel cell system that employs an algorithm using feed-forward control. The algorithm calculates a Reynolds number based on the velocity of the cooling fluid, a diameter of a coolant loop pipe and a kinematic viscosity (temperature) of a cooling fluid. The algorithm also uses a pressure loss number based on the Reynolds number and a position of a by-pass valve. The algorithm also defines a pressure loss value based on the pressure loss number, the density of the cooling fluid and the velocity of the cooling fluid. The algorithm then calculates a delivery head value based on the pressure loss value, the fluid density and a gravitational acceleration. The algorithm then uses the delivery head value and a predetermined set-point value of the volume flow to determine a desired pump speed based on the current operating parameters of the system.

Abstract: A method is disclosed for the automatic detection and identification of errors in a balancing machine during operation, in which a rotor provided with an unbalance is rotatably mounted in a vibratory bearing in the balancing machine and is set in rotation by a drive, the rotational frequency of the rotating rotor and the vibrations stimulated by the rotor are measured and measurement signals which comprise the measured values of the rotational frequency and the vibrations are generated and delivered to an evaluation computer. The evaluation calculation is based on mathematical models of the dynamic properties of the balancing machine which describe stimulations of the machine structure due to the unbalance, in particular in the balancing planes, and/or due to the rotor geometry and/or due to the bearing and/or possible damage to the bearing.

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: A method for steering a motor vehicle in a collision avoidance maneuver ahead of an object in the front or lateral surroundings of the motor vehicle. It is arranged that a linear control method is employed, in which case one controller output signal (?LLM1; . . . ; ?LLMN) each is determined in at least two linear controller modules depending on a deviation (e) between an actual position of the motor vehicle and a nominal position that is predetermined due to the avoiding path. The controller output signals (?LLM1; . . . ; ?LLMN) are weighted with respectively one weighting factor (?1; . . . ; ?N) that is established depending on the vehicle speed (v), and a steering angle of steerable wheels of the motor vehicle is established based on an arbitration of the weighted controller output signals. Furthermore, a device which is suitable to implement the method is provided.

Abstract: In order to be able to undertake a reliable prediction of a movement trajectory of an object moving in road traffic even for relatively long prediction periods, a method is proposed in which there is firstly determined (203) with the aid of an evaluation of a determined movement variable of the object a driving maneuver that is executed by the object. A model (2051; . . . ; 205N) of the movement of the object is then selected as a function of the determined driving maneuver, and the movement trajectory of the object is calculated with the aid of the selected model. There is also proposed an apparatus for predicting the movement trajectory of an object that is suitable for carrying out the method. The object can be both a motor vehicle and an object in the surroundings of the motor vehicle.

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: Disclosed is a method of executing a collision avoidance maneuver ahead of an object in the surroundings, with which the vehicle is on a collision course. To allow determining the avoiding path in a simplest possible fashion and, in particular, a simplest possible parameterization of the path, the avoiding path is given by a sigmoid (ƒao(x); ƒao/2(x); ƒ2ao(x)), the shape of which is defined by at least one parameter (a; B; c) that is determined depending on the speed of the motor vehicle or a desired maneuver width of the collision avoidance maneuver. Also disclosed is a device which is suitable for implementing the method.

Abstract: The invention relates to a method for automatically detecting a driving maneuver of a motor vehicle (A), in particular an overtaking maneuver or an evasive maneuver, in which the surroundings of the vehicle are covered and an electronic image thereof is created, the electronic image is used for the detection of a traffic lane and/or of a road as well as of-objects (B, C) in the surroundings of the vehicle, longitudinal-dynamics and lateral-dynamics movement information ({dot over (?)}, ?y, ?H, ?FL, ?FR, ?RL, ?RR) of motor vehicle (A) is determined, and the position ({circumflex over (X)}) of motor vehicle (A) is odometrically estimated on the basis of the data (bLane, yLane, ?, c0) of lane detection and/or road detection and/or of the movement information ({dot over (?)}, ?y, ?H, ?FL, ?FR, ?RL, ?RR) of motor vehicle (A), wherein the invention provides that a) the following indicator quantities are formed from the estimated position data ({circumflex over (X)}) of motor vehicle (A): a value of the latera

Abstract: A method is disclosed for the automatic detection and identification of errors in a balancing machine during operation, in which a rotor provided with an unbalance is rotatably mounted in a vibratory bearing in the balancing machine and is set in rotation by a drive, the rotational frequency of the rotating rotor and the vibrations stimulated by the rotor are measured and measurement signals which comprise the measured values of the rotational frequency and the vibrations are generated and delivered to an evaluation computer. The evaluation calculation is based on mathematical models of the dynamic properties of the balancing machine which describe stimulations of the machine structure due to the unbalance, in particular in the balancing planes, and/or due to the rotor geometry and/or due to the bearing and/or possible damage to the bearing.

Abstract: Modem rotary machine production requires built-in fault detection and diagnoses. The occurrence of faults, e.g. increased friction or loose bonds has to be detected as early as possible. Theses faults generate a nonlinear behavior. Therefore, a method for fault detection and diagnosis of a rotary machine is presented. Based on a rotor system model for the faulty and un-faulty case, subspace-based identification methods are used to compute singular values that are used as features for fault detection. The method is tested on an industrial rotor balancing machine.

Abstract: A method for steering a motor vehicle in a collision avoidance maneuver ahead of an object in the front or lateral surroundings of the motor vehicle. It is arranged that a linear control method is employed, in which case one controller output signal (?LLM1; . . . ; ?LLMN) each is determined in at least two linear controller modules depending on a deviation (e) between an actual position of the motor vehicle and a nominal position that is predetermined due to the avoiding path. The controller output signals (?LLM1; . . . ; ?LLMN) are weighted with respectively one weighting factor (?1; . . . ; ?N) that is established depending on the vehicle speed (v), and a steering angle of steerable wheels of the motor vehicle is established based on an arbitration of the weighted controller output signals. Furthermore, a device which is suitable to implement the method is provided.

Abstract: In order to be able to undertake a reliable prediction of a movement trajectory of an object moving in road traffic even for relatively long prediction periods, a method is proposed in which there is firstly determined (203) with the aid of an evaluation of a determined movement variable of the object a driving maneuver that is executed by the object. A model (2051; . . . ; 205N) of the movement of the object is then selected as a function of the determined driving maneuver, and the movement trajectory of the object is calculated with the aid of the selected model. There is also proposed an apparatus for predicting the movement trajectory of an object that is suitable for carrying out the method. The object can be both a motor vehicle and an object in the surroundings of the motor vehicle.

Abstract: Modem rotary machine production requires built-in fault detection and diagnoses. The occurrence of faults, e.g. increased friction or loose bonds has to be detected as early as possible. Theses faults generate a nonlinear behavior. Therefore, a method for fault detection and diagnosis of a rotary machine is presented. Based on a rotor system model for the faulty and un-faulty case, subspace-based identification methods are used to compute singular values that are used as features for fault detection. The method is tested on an industrial rotor balancing machine.

Abstract: Disclosed is a method of executing a collision avoidance maneuver ahead of an object in the surroundings, with which the vehicle is on a collision course. To allow determining the avoiding path in a simplest possible fashion and, in particular, a simplest possible parameterization of the path, the avoiding path is given by a sigmoid (ƒao(x); ƒao/2(x); ƒ2ao(x)), the shape of which is defined by at least one parameter (a; B; c) that is determined depending on the speed of the motor vehicle or a desired maneuver width of the collision avoidance maneuver. Also disclosed is a device which is suitable for implementing the method.

Abstract: A thermal sub-system for a fuel cell system that calculates a desired volume flow or mass flow of a cooling fluid pumped through a fuel cell stack solely on thermal stack power loss and cooling fluid temperature. An algorithm calculates a power loss of the stack and then calculates the temperature of the stack based on the power loss and dissipated heat power from the stack. The algorithm uses the temperature of the stack and the temperature of the cooling fluid out of the stack to determine the dissipated heat power. The algorithm then uses the temperature of the stack, the temperature of the cooling fluid into the stack and the temperature of the cooling fluid out of the stack to determine the flow.

Abstract: A thermal sub-system for a fuel cell system that uses pump characteristics to determine a required cooling fluid volume flow. An algorithm controls the speed of the pump to provide the desired volume flow of the cooling fluid for the system parameters. The algorithm determines a motor efficiency value based on a pump input power value and a pump speed value. The algorithm then determines a coefficient of power value based on the motor efficiency value, the pump input power value and the pump speed value. The algorithm then uses a look-up table to convert the coefficient of power value to a coefficient of flow value. The algorithm then calculates the volume flow based on the coefficient of flow value and the pump speed value.

Abstract: A thermal sub-system for a fuel cell system that employs an algorithm using feed-forward control. The algorithm calculates a Reynolds number based on the velocity of the cooling fluid, a diameter of a coolant loop pipe and a kinematic viscosity (temperature) of a cooling fluid. The algorithm also uses a pressure loss number based on the Reynolds number and a position of a by-pass valve. The algorithm also defines a pressure loss value based on the pressure loss number, the density of the cooling fluid and the velocity of the cooling fluid. The algorithm then calculates a delivery head value based on the pressure loss value, the fluid density and a gravitational acceleration. The algorithm then uses the delivery head value and a predetermined set-point value of the volume flow to determine a desired pump speed based on the current operating parameters of the system.

Abstract: A method of compensating inaccuracies in a wheel speed sensor wherein signal-forming elements are arranged on a sensor wheel and wherein a determined angle is allocated to a given number of signal-forming elements to determine a wheel speed, and wherein the wheel speed is determined by evaluating the time during which the wheel rotates around the angle, wherein a correction factor which is included in the determination of the wheel rotational speed is memorized with respect to each element to compensate for variations of the signal-forming elements and/or the positioning of the elements, and the correction factors are updated during the driving operation, wherein updating is performed so that the non-corrected wheel speed measured by the sensor is compared with a reference value of the wheel speed established by means of a calculating model, and the correction factor is updated in dependence of this comparison.