摘要:
A resampler converts a digital input sequence with an input sampling into a digital output signal sequence with an output sampling rate. An estimation device estimates the sampling rate ratio between the input sampling rate and the output sampling rate and the desired phase of the output signal sequence in an observation interval with a predetermined length of N samples of the output signal sequence, the observation intervals overlapping in the ratio 1:6. A control device compares the actual phase of the output signal sequence with the desired phase and, in a manner dependent on the estimated sampling rate ratio and the deviation of the actual phase from the desired phase, generates a control signal for in each case N/6 samples of the output signal sequence. An interpolator interpolates the input signal sequence for the purpose of generating the output signal sequence at sampling instants whose temporal position is predetermined by a control signal.
摘要:
A drive unit, in which an unattached shaft end of a drive shaft abuts axially against an abutment surface of a housing part. The abutment surface is crown-faced and with respect to the abutting, unsupported and unattached (i.e., free) shaft end and thereby prevents the drive shaft from deflecting eccentrically from radial adjusting forces. Given an eccentric abutment, the abutment surface leads the drive shaft back to its centrical axial position.
摘要:
In order to be able to ensure with low outlay a slip ring or commutator motor having a high level of freedom from noise and good running quality at maximum power, despite unavoidable deviations from circularity of the slip ring or commutator ground by the brushes abutting thereon, it is proposed according to the invention that the brushes (6; 7; 8) be supported such that they can pivot about an axis which runs radially in the vicinity of the surface and axially essentially in the axial direction of the commutator (1) or slip ring; that, according to one embodiment, the axis be formed by a guide pin (31; 41), which is retained in a brush housing (2) at least partially embracing the brush (6; 7) in the vicinity of the surface of the commutator (1) or the slip ring, and which is plugged axially through a guide slot (61; 71) running in the compression direction of the brush and open towards the surface of the slip ring or commutator (1), or that the brush (6) be tangentially embraced externally by the brush compression spring (3a) in the sense of a support with tangential supporting parts (33a; 34a), which can pivot.
摘要:
A pump for driving a liquid, particularly liquid helium, has an electromatic drive contained in its entirety in the pump housing for generating an axially oriented force to reciprocate the pumping member. The electromagnetic drive has a stationary electromagnet supported in the pump housing and including an annular air gap and an energizing solenoid for generating a magnetic flux in the air gap. The electromagnetic drive further has a coil carrier attached to the pumping member to move therewith as a unit; the coil carrier has a travelling path passing through the air gap and being parallel to the pump axis. Further, a moving coil is mounted on the coil carrier for traversing the magnetic flux in the air gap, whereby an electromagnetic force parallel to the pump axis is exerted on the moving coil for displacing the moving coil, the coil carrier and the pumping member as a unit.
摘要:
A system for performing a flash separation of a reservoir fluid includes a sample chamber configured to hold the reservoir fluid and a flash apparatus in fluid communication with the sample chamber. The flash apparatus includes a microfluidic device configured to flash the reservoir fluid in fluid communication with the sample chamber, and a separation chamber configured to separate the flashed reservoir fluid into a liquid phase and a gaseous phase in fluid communication with the microfluidic device. The system further includes a gas receptacle configured to store the gaseous phase, A method for performing a flash separation of a reservoir fluid includes providing a reservoir fluid to a microfluidic device, urging the reservoir fluid through the microfluidic device such that the reservoir fluid is lashed within the microfluidic device, and separating a liquid phase and a gaseous phase from the flashed reservoir fluid.
摘要:
A mobile device including a location module configured to determine a location of the mobile device, and a caller identification (ID) and/or caller ID blocking module configured to provide caller ID and/or caller ID blocking features by sending and/or receiving a signal with caller ID and/or caller ID blocking information. The caller identification and/or caller ID blocking module is configured to enable and disable the caller ID and/or caller ID blocking features based upon the location of the mobile device determined by the location module.
摘要:
A guide for cutting a bone comprising an anterior portion and a distal portion orientated at about a right angle to the anterior portion. The distal portion includes a guiding side, a distal surface at the guiding side, a box-cut shaped opening defined by the guiding side, a plurality of first cutting surfaces disposed at the guiding side at an acute angle relative to the distal surface of the guiding side operable to guide a cutting device to the bone to form chamfer cuts in the bone, and a second cutting surface disposed at the guiding side at least about a right angle to the distal surface operable to guide a cutting device to the bone to form a posterior cut in the bone.
摘要:
A method for displaying ordinate-abscissa value pairs on a display device with discrete display points in the abscissa and ordinate direction, of which the abscissa resolution is reduced by comparison with the abscissa resolution of the ordinate-abscissa value pairs, determines the respective maximum and minimum ordinate value of every ordinate-abscissa value pair, which is disposed within the half spacing distance of the abscissa value relative to the adjacent abscissa value to the right and left of the display points, and replaces all ordinate-abscissa value pairs, which are disposed within the half spacing distance of the respective abscissa value relative to the respective adjacent abscissa value to the right and left of the display points, with an area between the maximum and the minimum ordinate value and the half spacing distance of the abscissa value relative to the adjacent abscissa value to the right and left of the display points.
摘要:
An approach is provided for clock-pulse synchronization between an amplitude-modulated or phase-modulated received signal and a transmitted signal by estimating the timing offset between the received signal and the transmitted signal by maximum-likelihood estimation, wherein the maximum-likelihood estimation is realized through a pre-filtering dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function and an averaging filtering. The received signal is an offset quadrature-phase-modulated received signal, and the nonlinear signal-processing function maintains the alternating components in the spectrum of the pre-filtered offset quadrature-phase-modulated received signal.
摘要:
A method and a device for determining a statistical parameter for all frequencies of a frequency distribution of signal levels of a test signal registered respectively in several observation intervals counts the frequency of the signal level of the test signal measured in each case within the respective signal-level range and at the respective value of the time or frequency raster of the frequency distribution from new within every observation interval, and buffers it for display on a display device. After every observation interval, for every signal-level range and every value of the time or frequency raster of the frequency distribution, the respective statistical parameter from the respective, newly-buffered frequency and all respective frequencies measured and buffered at earlier observation intervals is determined and buffered.