摘要:
A voltage conversion circuit for the conversion of an input d.c. voltage into a three-phase a.c. voltage (UR, US, UT) in the mains frequency range having at least one inductor (L1, L2) and having multiple switches (S1, . . . , S9) controlled by a drive circuit (AST) in which a first converter section is provided (S1, D1, L1, S2) to produce positive output voltage portions and a second converter section (S3, L2) is provided to produce negative output voltage portions and the output of the first converter section is connected to the three phase outputs (R, S, T) via one each of first longitudinal phase circuit breakers (S4, S5, S6) and the output of the second converter section via one each of second longitudinal phase circuit breakers (S7, S8, S9).
摘要:
An optical module has a lens holder into which a lens array with three lenses and a diaphragm, for example, is inserted. The lenses and the diaphragm are oriented by way of the geometrical shape thereof such that no further optical adjustment is required. The circuit carrier and the lens unit are adjusted via at least one permanently flexible or springy element which is disposed between the lens holder and the circuit carrier and presses the component-equipped area of the circuit carrier away from the lens holder and against at least one stop element that is in positive contact with the lens unit. In the novel optical module or optical system it is no longer necessary to take into account the thickness tolerance of the circuit carrier and possible adhesives in the tolerance chain of optical modules. The module and the system are particularly suitable interior or exterior zone applications in motor vehicles.
摘要:
The invention relates to a device for the delivery of flat objects to a friction/suction picking device with a suction head, the objects standing in a stack on a thin edge thereof on a support surface arranged on a stop surface and transported in the direction of the picking point using conveyor means. A sensor for measuring the vacuum in the suction head, is arranged on or in the suction head, which is connected to the drive controller on the conveyor means. Depending on the measured vacuum the conveyor means can be controlled such that the front object has an inclination as low as possible with the lowest possible stack pressure on the at least one friction picking device.
摘要:
The direct drive for a throttle valve shaft in a throttle valve manifold comprises a coil and a rotor arranged directly adjacent to the coil. The rotor is made from a steel ring inside which a first inner magnetic shell and a second inner magnetic shell lie opposite each other. The steel ring has a first outer magnetic shell and a second outer magnetic shell lying opposite each other on the outside thereof. The steel ring is connected to the throttle valve shaft on the end thereof facing the throttle valve. A sensor for position recognition of the throttle valve is arranged in the middle of that region of the end of the steel ring facing away from the throttle valve.
摘要:
A method for supplying alternating current to a network (NET), according to which a direct current is converted to an alternating current with a line frequency, with the aid of an inverter (WER) and the output of the inverter is connected to the network. The terminal voltage (u(t)) is measured and the output current (i(t)) of the inverter (WER) is regulated in such a way that it essentially corresponds to the quotient of the square sine current power P0·sin2(ωt) and the terminal voltage (u(t)), thus i(t)=P0·sin2(ωt)/u(t).
摘要翻译:一种用于向网络(NET)提供交流电的方法,根据该方法,借助于逆变器(WER)将直流电转换为具有线路频率的交流电,并且逆变器的输出连接到网络 。 测量端子电压(u(t)),并且以这样的方式调节逆变器(WER)的输出电流(i(t)),使得其基本上对应于正方形正弦电流功率P < (ω)和端电压(u(t)),因此i(t)= P 0 S 2 SUP>(omegat)/ u(t)。
摘要:
A system includes a communications network, a first communication device connected to the communications network, and a vending machine. The vending machine includes a retrieving device for obtaining a product from the vending machine, a second communication device connected to the communications network, and a dispensing device for dispensing the product from the vending machine. The first and second communication devices establish a connection via the communications network. The connection enables the retrieving device and the dispensing device.
摘要:
An apparatus for filtering an x-ray beam emitted by an x-ray source comprises a filter, adjustable from a parked position (P) outside of a path of the x-ray beam into a filtering position (F) in the x-ray beam path. A corresponding first sensor device detects when the filter in the filtering position (F), and a corresponding second sensor device detects when the filter in the parked position (P). Further, sensor signals are communicated by the first and second corresponding sensors to an evaluation device. The evaluation device generates a report if the filter is not in at least one of the parked position (P) and the filtering position (F).
摘要:
A circuit configuration providing a diagnostic signal for a power switching device which switches a load has a test circuit, a filter device, a validation device, and a coding device. The test circuit tests the power switching device and generates error symptoms for characterizing error types of different priorities. The filter device, depending on an activation signal activating the power switching device, provides a validity signal for the generated error symptoms. The validity signal specifies the validity of the corresponding error symptom in each case. The validation device validates a generated error symptom depending on the associated validity signal in each case and validates the validated activation signal and from this generates a group of is states and the associated complementary states. The coding device codes the states and complementary states depending on the priorities of the error types assigned to the states and complementary states. The diagnostic signal is formed from the coded states and complementary states.
摘要:
A control unit has at least one control element, in particular with at least one integrating and/or differentiating transfer characteristic which is constructed as a temporally discrete dynamic fuzzy logic control element. A temporally discrete dynamic fuzzy logic control element of this kind is for example a so-called fuzzy logic automaton, which has processing states. It is advantageous that the control unit of the invention can be constructed with control elements that each have systematically dynamic fuzzy logic properties, and in which nonlinearities can be introduced in a targeted way for a desired control performance.
摘要:
A seat occupancy detection device contains at least one transmitting apparatus and at least one receiving apparatus located at a position in a seat which position is distanced from the at least one transmitting apparatus such that a person occupying the seat will be situated at least partially in the signal path between the at least one transmitting apparatus and the at least one receiving apparatus for influencing the signals as a function of seat occupancy. In this manner, occupancy of the seat is effectively detected.