Abstract: A method calculates an excavation volume that was excavated by a construction machine using a tool. A motion trajectory of the tool over time is determined using one or more of the following sensors: inertial measurement unit, angle sensors, and linear sensors. At least part of the motion trajectory is classified based on machine load data as an excavation trajectory during which excavation occurs. The excavation volume is calculated using the excavation trajectory and dimensions of the tool.

Abstract: A fertilizing system for agricultural soils includes an application device for applying fertilizer and including a test device for detecting a nitrous oxide content in or on the agricultural soil to be fertilized. The test device includes multiple nitrous oxide sensors including in each case a first transmission device for transmitting measuring data, and including a data processing device that includes a first receiving device for receiving the measuring data.

Abstract: A management system for a wind energy plant including at least one control unit, and a method using the management system are disclosed. The management system is used to coordinate component modules of the wind energy plant with vibration damping modules and/or load reduction modules, wherein a sensor system supplies data of the operating states of the component modules for a system analysis. For this purpose, reactive vibrations and/or predictive forecasts of vibrations of the wind energy plant, and predictive disturbance variables are registered, and the vibration damping modules and/or load reduction modules in the control unit are activated, wherein an actuator carries out damping measures and/or load reduction measures on the component modules in accordance with the vibration damping modules and/or load reduction modules of the control unit.

Abstract: A method for determining total damage to at least one rotating component of a drive train in a system, in particular a wind or wave energy system, includes determining over time during operation of the system a variable characterizing a rotational speed of the component and a variable characterizing a torque transmitted by the component. A load collective is determined in a calculator unit from the temporal progression of the variables, and the total damage is determined from a comparison of the determined load collective and a reference load collective.

Abstract: A method for measuring a load on a rotor blade of a wind power plant includes deriving a deflection of the rotor blade from an acceleration value, determining a signal drift component of the deflection by using an absolute value, and determining the load by using the signal drift component and the deflection and material characteristics of the rotor blade. The acceleration value represents an acceleration on the rotor blade, and the absolute value represents an absolute measured value from an absolute sensor on the rotor blade.

Abstract: A method for preventing a lateral oscillation of a tower of a wind power installation having at least two rotor blades with adjustable attitude angles includes determining a manipulated variable for setting the attitude angles on the basis of information about a pitch torque and a yaw torque of the head of the tower. In this context, a counteracting torque is generated which counteracts the pitch torque and the yaw torque without exciting a lateral oscillation of the tower if the attitude angles are set on the basis of the manipulated variable.

Abstract: A device for a vehicle or a production machine, having: a first hydraulic pump, which hydraulically drives a load; an internal combustion engine, which mechanically drives the first hydraulic pump; a second hydraulic pump, which is hydraulically coupled to the first hydraulic pump; an apparatus, which drives the second hydraulic pump while utilizing the energy in the exhaust gas stream of the internal combustion engine; the load on the output side being directly connected to a tank.

Abstract: A stationary energy generation plant includes a control device that serves to control current and energy flow. The energy generation plant includes at least one mechanically driven rotor and a generator mechanically coupled to the rotor. To this end, power electronics operationally connected to the generator enable variable energy flow from the rotor through the generator and the power electronics to a load. In order to compensate for vibrational loads on the generator side, at least one current control is made possible by means of a first intermediate circuit storage of the power electronics. In order to compensate for mechanical vibrational loads and transients of a drivetrain, an energy flow control is provided by means of at least one additional second intermediate circuit storage disposed in the power electronics and having a multiple of the storage capacity of the first intermediate circuit storage.

Abstract: A method for determining a bending angle of a rotor blade of a wind turbine system includes step of reading in an acceleration signal which represents an acceleration of the rotor blade acting essentially perpendicularly with respect to a rotor plane. In addition, the method includes a step of determining the bending angle of the rotor blade of the wind turbine using the acceleration signal.

Abstract: A method for preventing a lateral oscillation of a tower of a wind power installation having at least two rotor blades with adjustable attitude angles includes determining a manipulated variable for setting the attitude angles on the basis of information about a pitch torque and a yaw torque of the head of the tower. In this context, a counteracting torque is generated which counteracts the pitch torque and the yaw torque without exciting a lateral oscillation of the tower if the attitude angles are set on the basis of the manipulated variable.

Abstract: A device for reducing loads in a drive train of a wind turbine includes a machine support. The wind turbine includes a sensor means, a controllable damper means, an actuating means. The sensor means is configured to detect at least one variable characterizing vibrations and/or misalignments in the drive train. The controllable damper means is configured to produce at least one adjusting torque which compensates at least one torque associated with the load in the drive train. The actuating means is configured to actuate the damping means based on the at least one variable detected by the sensor means.

Abstract: The disclosure relates to a method for determining an estimated value for at least one measured variable of a wind turbine. The measured variable represents a bending torque on a blade root of a rotor blade of the wind turbine from a rotor plane. The method includes reading in the measured variable and an angle of attack for the rotor blade. The method further includes adapting a model, which simulates an estimated value of the measured variable on the basis of a modeling instruction for a relationship between the measured variable and the angle of attack. The model is adapted using the read-in measured variable and the read-in angle of attack. The method also includes providing the estimated value for the at least one measured variable using the model.

Abstract: A device for a vehicle or a production machine, having: a first hydraulic pump, which hydraulically drives a load; an internal combustion engine, which mechanically drives the first hydraulic pump; a second hydraulic pump, which is hydraulically coupled to the first hydraulic pump; an apparatus, which drives the second hydraulic pump while utilizing the energy in the exhaust gas stream of the internal combustion engine; the load on the output side being directly connected to a tank.

Abstract: A management system for a wind energy plant including at least one control unit, and a method using the management system are disclosed. The management system is used to coordinate component modules of the wind energy plant with vibration damping modules and/or load reduction modules, wherein a sensor system supplies data of the operating states of the component modules for a system analysis. For this purpose, reactive vibrations and/or predictive forecasts of vibrations of the wind energy plant, and predictive disturbance variables are registered, and the vibration damping modules and/or load reduction modules in the control unit are activated, wherein an actuator carries out damping measures and/or load reduction measures on the component modules in accordance with the vibration damping modules and/or load reduction modules of the control unit.

Abstract: A stationary energy generation plant includes a control device that serves to control current and energy flow. The energy generation plant includes at least one mechanically driven rotor and a generator mechanically coupled to the rotor. To this end, power electronics operationally connected to the generator enable variable energy flow from the rotor through the generator and the power electronics to a load. In order to compensate for vibrational loads on the generator side, at least one current control is made possible by means of a first intermediate circuit storage of the power electronics. In order to compensate for mechanical vibrational loads and transients of a drivetrain, an energy flow control is provided by means of at least one additional second intermediate circuit storage disposed in the power electronics and having a multiple of the storage capacity of the first intermediate circuit storage.

Abstract: An electromagnetically actuatable valve for brake systems in motor vehicles, comprises a hydraulic part and an electric part. The valve is partially placed inside a valve block, in which an inlet borehole and an outlet borehole for a hydraulic fluid are made. The hydraulic part comprises a valve element inside of which a transversal borehole is made that communicates with the inlet borehole. In addition, a number of longitudinal boreholes, which are connected to the outlet borehole, are made in the valve element. The transversal borehole and the longitudinal boreholes are connected via a closing element. The valve enables a controlled opening and closing of the closing element thereby making a low-noise switching of the valve possible.

Abstract: An electromagnetically actuatable valve for brake systems in motor vehicles, comprises a hydraulic part and an electric part. The valve is partially placed inside a valve block, in which an inlet borehole and an outlet borehole for a hydraulic fluid are made. The hydraulic part comprises a valve element inside of which a transversal borehole is made that communicates with the inlet borehole. In addition, a number of longitudinal boreholes, which are connected to the outlet borehole, are made in the valve element. The transversal borehole and the longitudinal boreholes are connected via a closing element. The valve enables a controlled opening and closing of the closing element thereby making a low-noise switching of the valve possible.