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.

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.

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 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.

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 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.