Abstract: A system and method for performing diagnostics in a medium voltage drive. The system includes a power cell and a bypass mechanism. The bypass mechanism is operably connected to output terminals of the power cell and configured to create a shunt path between the output terminals. The bypass mechanism includes a communication interface configured to transmit a bypass signal to a communication interface associated with the power cell in response to a state change. The method of performing diagnostics includes a controller transmitting an input voltage to a bypass mechanism of the power supply, thereby causing a state change of the bypass mechanism. The controller receives a signal from the power cell, wherein the signal indicates the power cell has detected the state change of the bypass mechanism. The controller then determines if the power cell is correctly associated with the bypass mechanism.

Abstract: A method for detecting an error in a generator unit which has an electric machine (100) with a rotor winding (110) and a stator winding (120) and a rectifier (130) connected thereto, via which rectifier the electric machine (100) is connected to an electrical system (150) of a motor vehicle, the excitation current (IE) flowing through the rotor winding (110) of the electric machine (100) being plotted and it being concluded that there is an error in the generator unit depending on whether a frequency component (A) of a frequency spectrum of the plot of the excitation current (IE) in a frequency range above a lower speed limit (SW) is larger than a threshold value (S).

Abstract: The disclosure is related to a system and method for monitoring the integrity of fluid filled connector systems. The system includes a connector with a first space and a first measurement probe. A module or a receptacle is connected to the connector and includes first wiring that is coupled with second wiring in the connector. The module or the receptacle includes a second space in fluid connection with the first space. The first space and the second space include a fluid sealed within. The second space includes a second measurement probe. A measurement device is connected to the first measurement probe and the second measurement probe to determine an impedance value across the first space and the second space. The impedance value corresponds to an integrity measure for the system based at least in part on the fluid sealed within.

Abstract: Disclosed are an apparatus and method of diagnosing a failure of a switch element used to switch on or off external connection of a battery.

Abstract: Technology for obtaining formation parameters of a geological formation includes measuring a resistivity image of the geological formation. The measured resistivity image is compared to a modelled resistivity image where the modelled resistivity image is generated based on estimated formation parameters. A cost function is calculated based on the measure resistivity image and the modelled resistivity image. The estimated formation parameters are adjusted based on minimizing the cost function in order to generate a set of final formation parameters that represents a modelled resistivity image having a smallest cost function.

Abstract: A busbar current sensor assembly includes a busbar member that includes a first cavity and a second cavity. The second cavity is disposed opposite the first cavity. The busbar current sensor assembly also includes a first current sensor disposed in the first cavity such that the first cavity at least partially surrounds the first current sensor and a second current sensor disposed in the second cavity such that the second cavity at least partially surrounds the second current sensor.

Abstract: The present invention relates to a prober device that shapes an input waveform of a dynamic electric signal to be input to one of probes, and observes an output waveform of the dynamic electric signal output through a sample, or preferably shapes the input waveform such that the output waveform of the dynamic electric signal output through the sample becomes approximately a pulse shape, when a response analysis of a dynamic signal is performed with respect to a fine-Structured device. With this, the response analysis of a high-speed dynamic signal equal to or greater than a megahertz level can be performed with respect to the fine-Structured device such as a minute transistor configuring an LSI.

Abstract: In a magnetic resonance method and apparatus for generating diffusion-weighted image data, at least two recordings are implemented in which raw data are acquired at raw data points of a raw data memory weighted with a b-value. The raw data memory has a first subregion and a second subregion, the first subregion being more than half of the total raw data points of the raw data memory. In each of the at least two recordings of the first subregion, full sampling takes place, and the second subregion is differently undersampled in the respective recordings. The raw data are combined and reconstructed into image data weighted with the b-value.

Abstract: A method and a sensor arrangement for determining a physical quantity are illustrated and described. The described method includes stimulating a capacitor device within a native component carrier; measuring a capacitance value of the capacitor device; and determining the physical quantity based on the measured capacitance value. Further described is a method for using a native component carrier as a transducer for detecting a value of a physical quantity.

Abstract: In a method for providing a selection of at least one protocol parameter from a plurality of protocol parameters for a user-defined protocol parameter setting of at least one magnetic resonance protocol for a magnetic resonance examination on a patient using a magnetic resonance device, a selection mode and a setting mode can be performed. In the selection mode, stored user-dependent parameter information can be provided and a selection of the at least one protocol parameter for a protocol parameter setting can be determined based on the stored user-dependent parameter information. In the setting mode, the determined selection of the at least one protocol parameter can be provided to the user via a user interface.

Abstract: According to some aspects, a portable magnetic resonance imaging system is provided, comprising a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging. The magnetics system comprises a permanent B0 magnet configured to produce a B0 field for the magnetic resonance imaging system, and a plurality of gradient coils configured to, when operated, generate magnetic fields to provide spatial encoding of emitted magnetic resonance signals, a power system comprising one or more power components configured to provide power to the magnetics system to operate the magnetic resonance imaging system to perform image acquisition, and a base that supports the magnetics system and houses the power system, the base comprising at least one conveyance mechanism allowing the portable magnetic resonance imaging system to be transported to different locations.

Abstract: A method of measuring the AM/PM conversion of a device under test having a local oscillator is described. A device under test with an embedded local oscillator is provided. A signal source is connected to an input of the device under test. A receiver is connected to an output of the device under test. An input signal is provided by the signal source. The input signal has an initial power level. The input signal is input to the device under test. The power level of the input signal is changed. An output signal of the device under test is measured at different power levels of the input signal.

Abstract: A high speed arc suppressor and method include a first phase-specific arc suppressor configured to suppress arcing across contacts of the power contactor in a positive domain and a second phase-specific arc suppressor configured to suppress arcing across the contacts in a negative domain. First and second high speed switches are configured to enable and disable operation of an associated one of the first and second phase-specific arc suppressors. First and second drivers are configured to drive the first and second high speed switches.

Abstract: Various methods and systems are provided for acquiring k-space data for magnetic resonance imaging. In one example, after applying a phase encoding gradient, the k-space data of a phase angle is acquired while applying a frequency encoding gradient. An amplitude of the phase encoding gradient and a duration of the phase encoding gradient determined based on each and every of a phase angle of the phase encoding line and a duration of the frequency encoding gradient.

Abstract: A conductive probe may include a probe body for communicating with a circuit tester or a jumper. The probe body may be formed of metal and may have a free end. A probe tip may be mounted to the end of the probe body. The probe tip may be formed of thorium-tungsten. The probe tip may be configured for contacting a circuit node.

Abstract: Systems and methods for determining a fault in a gas heater channel are described. One of the methods includes receiving measured parameters associated with a plurality of heater elements of the gas heater channel. The gas heater channel transfers one or more gases from a gas supply to a plasma chamber. The method further includes calculating a measured parallel resistance of the plurality of heater elements from the measured parameters, comparing the measured parallel resistance to an ideal parallel resistance of the heater elements of the gas heater channel, and determining based on the comparison that a portion of the gas heater channel is inoperational. The method includes selecting an identity of one of the heater elements from a correspondence between a plurality of identities of the heater elements and the measured parallel resistance.

Abstract: To provide a surface characteristics evaluation apparatus and a surface characteristics evaluation method that evaluate the residual stress in a steel material subjected to a surface modification treatment by considering the distribution thereof in the depth direction. The surface characteristics evaluation apparatus includes an oscillator, a detector, and a measuring instrument. The steel material is placed to abut against or close to a coil in the detector. The oscillator applies an alternating current to the coil, and computation is performed based on a signal indicating an electric characteristic of the coil. The residual stress in the steel material is evaluated by performing this operation while successively changing the frequency of the alternating current. The coil is configured to have a self-resonant frequency higher than the operating frequency.

Abstract: The present disclosure involves method and apparatus for de-embedding test fixture to extract the electrical behavior of device under test. A calibration board with both “1× open” and “1× short” test structures is fabricated and measured by equipment such as vector network analyzer that produces S parameters. The S parameters of “1× open” and “1× short”, with or without correction factors, are combined to produce the S parameters of equivalent “2× thru” test structure. The S parameters of equivalent “2× thru” are used subsequently to de-embed the test fixture. This present disclosure gives a simpler and more accurate method to create the S parameters of “2× thru” for de-embedding.

Abstract: In one aspect, a material system comprises a metal substrate and a first coating layer disposed on the metal substrate. A first electrode is directly disposed on the first coating layer, and a second electrode is disposed on the metal substrate. In one aspect, a method for determining material performance includes flexing a material system and detecting impedance of the material system with an electrochemical impedance spectrometer. The material system has a metal substrate, a first coating layer disposed on the metal substrate, a first electrode directly disposed on the first coating layer, and a second electrode disposed on the metal substrate.

Abstract: A system and method for imaging a subject includes a first imaging pulse sequence having gradient blips along an x-direction and a y-direction to acquire calibration image data from multiple slices. The imaging pulse sequence also includes a plurality of Z-shimming gradient blips coincident in time with the gradient blips along the x- and y-directions and varied within each slice. A plurality of calibration images are reconstructed from the calibration image data and a comparison image is formed by selecting an image from the calibration images corresponding to at least one of the varied Z-shimming gradient blips for each slice to determine a desired value of the Z-shimming gradient blips. The desired values are used to perform a second pulse sequence to acquire clinical image data from the subject. The second pulse sequence is used to acquire clinical images having been compensated for magnetic susceptibility variations within the subject.