98results about How to "Control deviation" patented technology

An improved electrical connector is provided by compensating for skew in signal conductors of a differential pair while ensuring a uniform impedance along the differential pair. Skew is equalized by regions of lower dielectric constant preferentially positioned adjacent the longer conductor of each pair. Impedance along the length of the signal conductor is equalized by a compensation portion in the first conductor that offsets for a change in impedance associated with the change in dielectric constant adjacent the longer conductor. The compensation portion may be a widening in the first conductive element relative to a nominal width of the conductive element. The skew compensation portion may be along a longer edge of the longer conductor and the impedance compensation portion may be along the shorter edge of the longer conductor.

An electrical interconnection system with high speed, differential electrical connectors. The connector is assembled from wafers each containing a column of conductive elements, some of which form differential pairs. Skew control is provided for at least some of the pairs by providing a profile on an edge of the shorter signal conductor of the pair. The profile may contain multiple curved segments that effectively lengthen the signal conductor without significantly impacting its impedance. For connectors in which ground conductors are included between adjacent pairs of signal conductors, patterned segments of varying parameters may be included on edges of the signal conductors and ground conductors to equalize electrical lengths of all edges in a set of edges for which there is common mode or differential mode coupling as a signal propagates along each pair. Such features for skew control may be used in combination with other skew control features. The features used may vary depending on the location of the pair within the column.

The present invention relates to a double-output half-bridge LLC serial resonant converter, comprising: a half-bridge rectifying unit, a first resonant unit, a first transformer unit, a first rectifying unit, a first output unit, a second resonant unit, a second transformer unit, a second rectifying unit, a second output unit, a voltage dividing unit, a voltage regulating unit, a light-coupling isolation unit, and a control unit. In the present invention, the double-output half-bridge LLC serial resonant converter has an inventive circuit framework, which can not only solve the unbalance load current and the output voltage cross regulation occurred in the conventional double-output convertor, but also normally modulate the no-load or light-load output voltage; therefore the output voltage deviation can be effectively controlled.

A frequency hopping communication device has a memory memorizing modulation coefficients related to hopping frequencies of a carrier wave. Whenever a following hopping frequency is decided, a CPU reads out one of the modulation coefficients on the basis of the following hopping frequency from the memory and supplies it to a Gaussian filter. The Gaussian filter stores the read out modulation coefficient in a register and multiplies transmission data signal supplied thereto by the read out modulation coefficient stored in the register to produce a modulation signal. Thus, the modulation signal has voltage amplitude depending on the carrier frequency. A voltage controlled oscillator modulates the carrier wave having the following hopping frequency by the use of the modulation signal from the Gaussian filter and produces a transmission signal. Therefore, the transmission signal has an approximately uniform frequency deviation regardless of the carrier frequency.

A hybrid construction machine comprising an internal combustion engine, a motor generator, a working element driven by a hydraulic pressure, and a mechanism driven to turn by a turning motor, is further provided with an electricity accumulation means disposed between the motor generator and the turning motor, wherein the electricity accumulation means comprises a constant voltage electricity accumulation means which maintains a voltage level within a fixed range, and a variable voltage electricity accumulation means which permits variation in voltage level due to motor power generating operation of the motor generator or powering regenerative operation of the turning motor.

The invention discloses a pile planting construction method for steel sheet piles. The pile planting construction method comprises the following steps: S1, guiding holes at positions, which are corresponding to lock catches of each of the steel sheet piles, on a soil body; S2, enabling a water jet cutter to penetrate through groove bodies of the steel sheet piles, wherein a jet nozzle of the water jet cutter faces the soil body, and is used for jetting high-pressure water; S3, aligning the lock catches of the steel sheet piles with the guided holes, and continuously pressing the steel sheet piles into the soil body in a static pressure manner; meanwhile, monitoring the verticality of each steel sheet pile by adopting an infrared centring device. The pile planting construction method disclosed by the invention has the advantages that friction can be reduced, so that the steel sheet piles can be pressed into the hard soil body more easily; the vibration is small, and the noise is small.

An offset correcting method for thin driving belt has two approaches. One approach is used of magnetic attraction, that is, the permanent-magnet material is installed on the driving roller or the electromagnetic coil is installed in the driving roller and magnetic thin driving belt is used. Another approach is to arrange two pressing friction rollers at both ends of driving roller above the driving belt and regulating their pressure and tension can correct the offset of thin driving belt.

A two-axis continuous kneader 1 kneads a raw rubber, a reinforcing agent such as a carbon black, a softener such as a process oil, and the like by a screw, and at the same time sends them out in the front end direction and to the pelletizing/pellet delivery device 3. The pelletizing/pellet delivery device 3 manufactures the rubber pellet to be pressure-supplied to the extrusion molding device 15 through the conduit4. The extrusion molding device 15 kneads the rubber pellet supplied to the hopper 18 and the additive such as the vulcanized agent supplied to the hopper 19 by the screw to extrude the rubber pellet for a desired product.

The invention discloses a construction method of crossing a mining method tunnel by shield empty pushing. The construction method includes a mining method tunnel construction stage, a guide platform construction stage, a guide platform stepping-in construction stage, a shield empty pushing segment assembly stage and a shield traction mining method tunnel crossing construction stage. The mining method tunnel construction stage includes the step of installing brackets. The guide platform construction stage includes the steps of cleaning a base surface of the guide platform, measuring and settingout, concrete pouring and finishing and maintenance. The shield empty pushing segment assembly stage includes the steps of no-load propulsion of a shield machine, assembly of segments, segment backing backfilling, segment backfilling grouting and communication channel passing by the shield machine. The shield traction mining method tunnel crossing construction stage includes the steps of tractionequipment arrangement and traction. According to the construction method, the assembly quality of the segments can be ensured, so that the waterproof performance of the tunnel is ensured and the efficiency of shield empty pushing tunneling is improved, personnel investment is reduced, and the construction cost is reduced.

The invention provides an online self-service presswork design method based on a self-adaptive template. The online self-service presswork design method comprises the following steps: providing the self-adaptive template including a plurality of page elements for a user; filling a material on at least one page element of the self-adaptive template by the user; in combination with the filled material, self-adaptively adjusting the page state of the self-adaptive template according to a plurality of priority grades; judging whether all the page elements accord with all restrictive conditions or not at first after adjusting the self-adaptive template at each time; performing iteration adjustment or self-adaptive adjustment of the next priority grade when the page elements do not accord with all the restrictive conditions; receiving an input representing satisfaction or dissatisfaction of the user when all the page elements accord with all the restrictive conditions; ending the self-adaptive adjustment when the input of the user represents satisfaction; and performing self-adaptive adjustment of the next priority grade when the input of the user represents dissatisfaction till self-adaptive adjustment of the highest priority grade is finally achieved, and abandoning the self-adaptive template and selecting a new template if the user still does not satisfy.

The invention discloses a heavy duty plate feeder capable of realizing smooth transmission, and relates to material transportation and transshipment equipment. The heavy duty plate feeder comprises a drive shaft, a sealed chain belt wound on the drive shaft and a tension shaft, and chain supporting rollers for supporting the chain belt, wherein a drive chain unit is arranged on two sides of each chain unit component of the chain belt; a transverse H-shaped bearing plate is fixed in the middle; the drive chain unit is connected with the transverse H-shaped bearing plate; the sealed chain belt is engaged with a chain wheel of the drive shaft by the drive chain unit; guide wheels engaged with the chain belt are arranged at the position, corresponding to the chain wheel, of two ends of the tension shaft; the chain supporting rollers are arranged along equipment longitudinally in five lines; the chain supporting rollers in the two outer lines are chain belt driving rollers which are provided with ribs and arranged below the drive chain unit; and the chain supporting rollers in the three inner lines are chain belt bearing rollers arranged below the transverse H-shaped bearing plate. The heavy duty plate feeder has the advantages of effectively solving the problems of shock vibration and deviation of the chain belt in the transmission process, reducing wearing of the chain belt, prolonging operation period and improving production efficiency of equipment.

A glass rib unit type glass curtain wall comprises a unit frame and a panel glass. A principal vertical support is supported between the upper and the lower frames of the unit frame. The principal vertical support is connected with the auxiliary vertical support, and the glass rib is fixed in the auxiliary vertical support. The method for preparing the curtain wall comprises the following steps: baiting, manufacturing the sectional material, assembling the frame, installing the glass rib vertical support and auxiliary support, installing the panel glass and installing the glass rib. The invention provides a technique of the unit type glass curtain wall which is provided with a glass rib.

The invention discloses a belt conveying system for transportation of bulk materials, and belongs to the field of conveyers. The belt conveying system comprises a rack, and a driving head wheel and a driving tail wheel are arranged at the two ends of the rack respectively; a conveyer belt coats the driving head wheel and the driving tail wheel and conveys the materials around the driving head wheel and the driving tail wheel; the upper layer conveyer belt is supported by top carrier rollers; the lower layer conveyer belt is supported by bottom carrier rollers; the top carrier rollers comprise fixed carrier rollers and movable carrier rollers; a sweeper is arranged above the lower layer conveyer belt; the materials conveyed by the conveyer belt are collected by a material mover; and a primary material arranging device and a secondary material arranging device are sequentially arranged in the transportation direction of the material mover. According to the belt conveying system, flying dust can be decreased, the production environment is improved, material transportation efficiency is improved, and efficient and stable operation of the conveyers is guaranteed.

The invention discloses a utility boiler heating surface design method applicable to flue-gas temperature deviation fixation. The utility boiler heating surface design method includes firstly, determining a flue-gas temperature deviation factor of each screen according to flue-gas side temperature deviation curves on the same fracture surface; secondly, determining steam deviation curves according to a given dimension of a collecting box and introduction and eduction manners of a heating surface pipe from the collecting box to acquire a steam deviation factor of each screen; thirdly, performing superposition to the flue-gas temperature deviation factor and the steam deviation factor to acquire a comprehensive deviation factor of each screen; and fourthly, according to the comprehensive deviation factor of each screen and under the circumstance of unchanged gross heat-absorbing quantity of each heating surface, adjusting design resistance of each screen by adjusting the size of an opening on the collecting box to adjust working medium flow of each screen to offset compressive deviations among screens formed by flue-gas temperature deviations and steam deviations so as to enable steam outlet temperature of each screen to be uniform.

A liquid ejection head according to the present invention includes a plurality of ejection openings arranged in a first direction and a plurality of electro-thermal transducers for ejecting liquid from the ejection openings, the liquid ejection head and a printing medium being subjected to the relative movement, wherein an arrangement pitch of the ejection openings forming an end group located in the respective opposite end section along the first direction is longer than an arrangement pitch of the ejection openings forming a central group located in the central section along the first direction. According to the present invention, it is possible to eliminate white streaks which may generate in a solid printing.

A device controls the speed of needle movement in a sewing machine and thus the stitch length based upon the movement of a motion detection device relative to a reference surface. The formation of stitches by the sewing machine is controlled by detected changes in position of the detection device relative to the reference surface in connection with a predetermined stitch length setting and starting speed, set on either the detection device, an adapter or as part of the sewing machine control. The detection device may move together with the article being sewn while the sewing machine and reference surface remain stationary, or the detection device may move with the sewing machine while the article that is being sewn and reference surface remain stationary.

The invention provides an adjusting system and method for preventing a probe mark from deviating in a wafer test. The adjusting system comprises: a probe tester comprising a bearing table used for adsorbing a wafer to be tested; a probe card comprising a probe used to be in contact with bonding pads on a plurality of crystal grains of the wafer, wherein probe marks are formed at the surfaces of the bonding pads; and a controller. The adjusting method comprises the steps of: adsorbing a wafer on a bearing table of a probe tester; selecting a plurality of crystal grains from the crystal grains of the wafer; allowing the probe of the probe card to be in contact with the bonding pads on the crystal grains, and forming probe marks at the surfaces of the bonding pads; inspecting the formed probemarks by the controller, determining whether the probe marks are deviated or not according to an inspection result, if yes, calculating the height compensation value of the crystal grains where the probe marks are located; and adjusting the levelness of the bearing table of the probe tester according to the height compensation value by the controller so as to prevent the probe marks from deviating in the wafer test.

The invention relates to an unmanned aerial vehicle searching method for an underground multi-branch cave. The method comprises the steps that the current state configuration of an unmanned aerial vehicle is acquired, and the current configuration space of the unmanned aerial vehicle is acquired through a laser radar sensor; sampling is carried out in the configuration space by using a path sampling algorithm to obtain a plurality of paths of the unmanned aerial vehicle in the configuration space, and a collision-free path are reserved; the future safety of each path is calculated according to the state configuration and configuration space of the unmanned aerial vehicle at the path end point, and the future safe path is reserved; the exploration income of each path is calculated, and the unmanned aerial vehicle executes the path with the maximum exploration income. Compared with the prior art, the method has the advantages that a plurality of paths are firstly acquired, the collision-free path and the future safe path are reserved in combination with obstacle information of the configuration space, and then the path with the highest income is selected, so that autonomous exploration of the unmanned aerial vehicle in an unknown multi-branch tunnel environment can be realized at a relatively high speed, and the unmanned aerial vehicle with limited cruising ability can carry out exploration in a larger range and a farther path.

The invention discloses a high-power continuous wave deuterium fluoride/hydrogen fluoride chemical laser. The high-power continuous wave deuterium fluoride/hydrogen fluoride chemical laser comprises a main oscillator and 2N+1 amplification levels arranged at the back of the main oscillator, wherein the N is a nonnegative integer, the main oscillator mainly comprises an unstable resonator mirror and a gain module, and one light beam overturning device is at least arranged on an optical path between the first level of the 2N+1 amplification levels and the main oscillator and/or an optical path between any two adjacent amplification levels. The high-power continuous wave deuterium fluoride/hydrogen fluoride chemical laser disclosed by the invention has a function of correcting deviation of transmission directions of light beams, has capabilities of light intensity homogenization and stray light inhibition, and can be used for outputting high-quality laser beams.

The invention relates to a laser transfer printing press. The laser transfer printing press comprises a paper conveyor belt, a film pressing device, a UV (Ultraviolet) solidification device and a paper collection belt. An object to be printed is input from the paper conveyor belt and output from the paper collection belt via the film pressing device and the UV solidification device. The laser transfer printing press further comprises a thin film splicing device, a rolling device and an unrolling device, wherein the thin film splicing device is used for changing an old pre-treated thin film into a new pre-treated thin film when a pre-treated thin film is needed to be changed, and the operative pre-treated thin film is laid on a closed loop formed by the thin film splicing device, the film pressing device and the UV solidification device. With the adoption of the structure, the laser transfer printing press can achieve that a thin film is reused by the film pressing device in an internal circulation way, prevents external dust from reaching the thin film and affecting the service life of the thin film, reduces the loss of the thin film, lowers the risk factor for workers, and is simple in structure and wider in application range.