摘要:
A method is disclosed for detecting damage to silicone implants. In an embodiment, the method includes taking at least two computed tomography recordings at different X-ray spectra or different mono-energies of the X-ray radiation and reconstruction thereof. A data point is determined in a diagram for each voxel of interest, the X-ray attenuation values for different X-ray energies being plotted against one another; The data point, or another value for each voxel of interest determined from the X-ray attenuation values, is compared to known data points or values of body tissue and/or of silicone, and a note or warning is output if the data point or other value deviates from the known data points or values for body tissue by at least a first threshold value and/or in the event of simultaneous approximation to the known data point or value for silicone by less than a second threshold value.
摘要:
A method is disclosed for transmission of register contents of a CT detector with hierarchical hardware structure, wherein the first hierarchy level is formed by a control unit containing a register table for the read-out register contents of FPGAs lying lower down in the hierarchy and an intermediate register store for register contents to be written. With each new reading, the new register contents for FPGAs lying lower down in the hierarchy arriving during the respective preceding reading from the central control at the control unit are forwarded to the next hierarchy level. With each new reading, the register contents of all FPGAs lying lower down in the hierarchy are re-entered into the register table of the control unit. Finally, in the event of a readout command transferred asynchronously from the central control, the register contents are read out exclusively from the register table.
摘要:
A method reconstructs a reconstruction data set containing virtual X-ray images of projection images of a target region recorded with an X-ray device. The projection images being recorded at different positions of an X-ray source along a scanning trajectory. The method includes defining an imaginary position of the X-ray source for each virtual X-ray image. For each virtual X-ray image and each pixel to be reconstructed in the X-ray image a virtual beam section, covering the target region, of the path between the imaginary position of the X-ray source and the pixel is defined. For each projection image, an integral is determined from the relationships between the forward projection and the filtered back-projection by re-parameterizing. A projection value of the virtual X-ray image from the integrals determined is combined.
摘要:
A self-commutated converter is connected to further self-commutated converters by its AC voltage connection via an inductive component using a coupling point, which is common to all the converters, in an AC voltage network. An active power P and a frequency fN are determined from a network voltage at the coupling point and a converter current flowing via the inductive component. A active power difference value ΔP is supplied to an orthogonal controller and to a parallel controller. The output value from the parallel controller is used to minimize the reactive power exchanged between converter and coupling point. The frequency difference value Δf is supplied to a frequency controller and the output value from the frequency controller is logically combined with the output value from the orthogonal controller and the output value from the parallel controller, the frequency difference value Δf being simultaneously minimized.
摘要:
A manufacturing arrangement realized for the manufacture of a rotor blade, including a pair of tracks arranged along the longitudinal sides of a blade mold, a first gantry assembly realized to span the track pair and to carry a first tool arrangement, which first tool arrangement includes at least a fiber distributor, a second gantry assembly realized to span the track pair and to carry a second tool arrangement, and a control arrangement realized to effect a coordinated movement of the gantry assemblies along the track pair and to coordinate the operation of the second tool arrangement with the operation of the first tool arrangement, is provided. A manufacturing line, a method of manufacturing a rotor blade, and a wind turbine rotor blade are further provided.
摘要:
A nickel alloy includes a proportion by weight of Cr of 12.3% to 13.7%, a proportion by weight of Al of 4.3% to 4.7% and a proportion by weight of Co of 4% to 6%. The components are preferably Cr, Mo, Re and/or W, Al, Ti, Ta, Hf, Si, reactive elements including actinides and lanthanides, C, optionally the components Zr and/or B. The proportions by weight are selected such that both a desired high creep resistance and also a desired high hot corrosion resistance are achieved. A turbine blade is made of the nickel alloy.
摘要:
A turbomachine is provided having an inflow segment which carries an inflow segment vane and bores, a partial mass flow arriving through these bores at a relief space and leading to a cooling system.
摘要:
The embodiments relate to a method for the computer-aided ascertainment of the impedance of an electrical energy network, wherein the electrical voltage, the active power, and the reactive power are measured at a connection point, by which an electrical energy production installation is connected to the energy network, at respective successive instants. In this case, the impedance value is estimated at respective present instants by a computation code that is independent of the phase of the measured voltage. The estimation is carried out only for relatively large variations in the measured voltage or reactive power. The estimate is also taken into account only if its estimate error is small. The embodiments are based on the insight that accurate estimation of the impedance is possible at particular operating points of the energy network even without knowledge of voltage phase.
摘要:
In situations where first equipment of a first technical installation could hitherto not be monitored based on condition data of the first equipment from the first equipment alone, it is proposed that a first sensor measures first condition data of the first equipment and that art additional sensor measures additional condition data of an additional equipment of an additional technical installation. The first condition data and the additional condition data are transmitted to a sorting unit and processed by the sorting unit into a ranking list. A corresponding sorting unit and a system as well as a corresponding computer program and a computer program product are also disclosed.
摘要:
A method is disclosed for transmission of register contents of a CT detector with hierarchical hardware structure, wherein the first hierarchy level is formed by a control unit containing a register table for the read-out register contents of FPGAs lying lower down in the hierarchy and an intermediate register store for register contents to be written. With each new reading, the new register contents for FPGAs lying lower down in the hierarchy arriving during the respective preceding reading from the central control at the control unit are forwarded to the next hierarchy level. With each new reading, the register contents of all FPGAs lying lower down in the hierarchy are re-entered into the register table of the control unit. Finally, in the event of a readout command transferred asynchronously from the central control, the register contents are read out exclusively from the register table.