摘要:
A method and a device for numerical control of machine tools, robots, production machines and the like, is described, whereby complex and large task can be processed more easily. This is realized by a numerical controller which can generate a marker signal, in particular desired position values for system components, in particular drives, at a certain interpolation clock cycle or rate. A control axis provides in an interpolation clock cycle reference values for reading a table, whereby desired position values for asynchronous successor axis can be obtained. The tables can also store switching functions that define start and end points independent of the interpolation clock cycle. As soon as the integration clock cycle has reached or exceeded the point in time of a reference value, execution of the functions stored in the table can be triggered. The table can be stored in encoded and/or non-encoded form.
摘要:
A method for detecting a rotation and a direction of a rotation of a rotor, on which at least one damping element is positioned, wherein two sensors are arranged. The sensors are damped depending on a position of the damping element. After a standardization has been performed, the measurements are taken by observing consecutive rotational angle positions and then standardization rules are applied to the measured decay times of the sensors. Then a vector, which is entered into a coordinate system, is formed from the values. The present vector angle is determined and compared to the value of a suitable prior vector angle. From the result of the comparison, it is determined whether the rotor has performed a rotation and whether the rotation was forward or backward. By repeating the measurements in the rhythm of the scanning frequency, the rotational motions of the rotor can be detected with high accuracy.
摘要:
A focus-detector arrangement includes a radiation source with a focus, arranged on a first side of the subject, for generating a fan-shaped or conical beam of rays; at least one X-ray optical grating arranged in the beam path, with at least one phase grating arranged on the opposite second side of the subject in the beam path generating an interference pattern of the X-radiation preferably, in a particular energy range; and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. According to at least one embodiment of the invention, at least one X-ray optical grating including bars which are free from overhangs form shadows in the beam path of the fan-shaped or conical beam of rays.
摘要:
A method of measuring the tensile stress distribution in a metal strip between two roll stands, between a roll stand and a coiler, within a blooming stand, or upstream or downstream from a deflection roller, with the metal strip being deflected and the deflection of the metal strip being measured by two or more sensors arranged across the width of the metal strip. The tensile stress distribution in the metal strip is calculated as a function of the deflection of the metal strip. A correction is performed on the measured values of sensors in the edge area of the metal strip whose measurement area is not covered completely by the metal.
摘要:
A method for measuring the tensile stress distribution over the width of the metal strip is provided. In order to measure the tensile stress in a metal strip between two roll stands or between a roll stand and a coiler or a guide roll, a force is exerted on the metal strip using a suction device and effecting a deflection of the metal strip. The deflection of the metal strip is measured and used for calculating the tensile stress distribution over the width of the metal strip.
摘要:
A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles.
摘要:
A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles.
摘要:
A focus-detector arrangement and an X-ray apparatus for generating projective or tomographic phase contrast recordings of a subject are disclosed. In at least one embodiment, the focus-detector arrangement includes a radiation source with a focus, arranged on a first side of the subject, for generating a fan-shaped or conical beam of rays; at least one X-ray optical grating arranged in the beam path, with at least one phase grating arranged on the opposite second side of the subject in the beam path generating an interference pattern of the X-radiation preferably, in a particular energy range; and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. According to at least one embodiment of the invention, at least one X-ray optical grating including bars which are free from overhangs form shadows in the beam path of the fan-shaped or conical beam of rays.
摘要:
Electromechanical transducer for implantable hearing aids. The transducer has a hermetically sealed and biocompatible housing, in which a wall is designed as a membrane that can oscillate, and which forms a heteromorphic connecting element together with a piezoelectric ceramic disk. Mechanical oscillations of the housing membrane are coupled to the middle ear or inner ear of the user by a mechanically rigid element attached in the central area of the membrane. This element is configured as a bow, so that in positioning the transducer housing from the direction of the mastoid adjoining the tympanic cavity, it acts as an artificial anvil to which coupling elements can be attached for mechanically transmitting oscillations of this artificial ossicle to the inner ear. Various coupling elements can be used, which correspond to the respective individual pathological situation. The application of the entire transducer system can be performed the operating surgeon having an unobstructed view, without extensive, space-creating interventions in the anatomical conditions of the middle ear.
摘要:
In a focus detector arrangement and method for an x-ray apparatus for generating projection or tomographic phase-contrast images of an examination subject, a beam of coherent x-rays is generated by an anode that has areas of different radiation emission characteristics arranged in bands thereon, that proceed parallel to grid lines of a phase grid that is used to generate the phase-contrast images.