207results about How to "Eliminate offset" patented technology

A PSA laminate is provided comprising at least one non-adhesive laminate and at least one tackifier layer; wherein the non-adhesive laminate comprises at least one facestock layer and at least one adhesive base layer; wherein the facestock layer comprises at least one facestock material; wherein the adhesive base layer comprises at least one adhesive base polymer; wherein the tackifier layer comprises at least one tackifier; wherein the tackifier composition is not a PSA; and wherein the tackifier layer is applied to the adhesive base layer side of the non-adhesive laminate to produce the PSA laminate. Processes for producing the PSA laminate are also provided as well as articles comprises the PSA laminates.

An integrated circuit memory contains a memory cell connected to a bit line that does not float during a portion or all of the read sensing part of the read cycle. The memory cell includes a data storage device. The data storage device may be a ferroelectric capacitor, a linear capacitor, a floating gate transistor, a magnetic device, a resistive device or other type of data storage device capable of placing a charge on the bit line corresponding to a specific data state of the memory cell. The bit line and a reference bit line are connected to a differential amplifier and precharged to specified voltages. Preferably, a self-nulling sense amplifier circuit is connected to the bit lines that compensates for sense amplifier offset by applying additional charges on the bit lines. Alternatively, charge sources may be connected to the bit lines to provide additional charges on the bit lines during the read cycle. Memory cells according to this invention can be configured to provide a reference cell for the reference bit line.

The invention discloses a map feedback correction method of an inertial navigation system. A micro-control processing unit, an inertial sensing unit, a GPS signal-receiving module, a navigation software module and an electronic map database are matched to establish path-planning point information; measuring information is provided by the inertial sensing unit to the micro-control processing unit for processing so as to generate inertial navigation path point information when no GPS signal is received; correction value information is generated by comparing the prior latitude and longitude information on the path-planning point information and the inertial navigation path point information; and then, accumulated errors generated by the inertial sensing unit is corrected by the correction value information to improve the positioning precision. The map feedback correction method of the inertial navigation system corrects the accumulated errors of the inertial navigation system by the latitude and longitude information provided by the electronic map database.

A multispectral imaging color measurement system, comprising a dark room, a sample platform and an imaging device for capturing said object being measured; a controllable illumination device, a filter wheel unit, an imaging signal processing unit and an electronic control unit. A method for processing imaging signals of the multispectral imaging color measurement is also proposed. The multispectral imaging color measurement system and the method for processing imaging signals thereof can overcome the inaccuracy of traditional digital imaging systems and the limits of spectrophotometer systems and provide users in the textile industry with highly accurate color measurement and evaluation.

The invention is applicable to the field of industrial control and provides a sampling clock synchronizing method. The method comprises the following steps of: receiving crystal oscillator pulse signals provided by an external crystal oscillator and generating count pulse signals; receiving the count pulse signals for counting, and outputting sampling pulse signals after the counting of a preset counting quantity N is finished; receiving externally-input time pulse signals, and counting errors of the count pulse signals within a clock pulse signal period and between the clock pulse signal period and a sampling pulse signal period; and changing the preset counting quantity N according to the errors. By adopting the external stable clock pulse signals, the sampling clock synchronizing method can be used for adjusting the inherent errors of the crystal oscillator pulse singles and the errors caused by the factor that the count pulse signals trigger the sampling pulse signals under the influence of temperature change of work environments, so that the errors of crystal oscillator frequency can be reduced to the greatest extent, the effect of the accumulated errors on a sampling pulse can be eliminated, and the error accumulation of a sampling pulse clock is overcome.

The present disclosure proposes a fully integrated accurate LED output current controlling circuit and method, which can be seamlessly combined with true PWM dimming. The current controlling circuit has an auto zero function in the light-emitting diode driver to eliminate offsets caused by the system, process variations, parasitic effects, dimming and so on in an LED driver application, and thus is capable of controlling the LED current with high accuracy. Moreover, the driver of the present disclosure does not require the use of external components such as an external resistor to regulate current accuracy.

The invention discloses a method for quickly detecting freshness of hairtail by using the near-infrared spectrum technology, and aims to overcome defects that a conventional hairtail freshness detection method is complex in process, and the freshness can be polluted by chemical agents. The method adopts the near-infrared spectrum technology and mathematical modeling to establish a model for detecting volatile basic nitrogen content in a hairtail body, then the volatile basic nitrogen content in a sample can be calculated by using the model to analyze a near-infrared spectrum of the hairtail sample, and lastly the freshness of the hairtail can be detected according to the content of the volatile basic nitrogen. The method has the advantage that the analysis speed is high, and chemical pollution can be avoided.

The invention relates to the anti-surge control of a blower and aims at providing an anti-surge control method of a blast furnace blower. The anti-surge control method comprises the steps of: 1) conducting dimensionless treatment to an anti-surge curve to obtain the anti-surge curve which is not changed with an inlet condition and a structure; 2) obtaining real-time operating parameters, making a comparison with the dimensionless value of an anti-surge point after the dimensionless treatment and determining whether a current operating point is in a safe area or not; 3) determining the distance between the current operating point and the anti-surge curve and change speed in the current dimensionless flow direction and determining proportional-integral-derivative (PID) control parameters by taking the change speed as an input valve; and 4) transmitting the PID control parameters to the controller of an anti-surge valve to realize the control over the anti-surge valve. The anti-surge control method of the blast furnace blower has the advantages that the anti-surge curve offset caused by the change of the inlet condition and the structure is eliminated and the safe operating area can be accurately judged during operation; and the problems of pressure fluctuation and energy wastage caused by a reason that the anti-surge valve is opened too large or too small because the control parameters are fixed can be eliminated.

A battery management balancing device provides local discharge circuits for individual cells of a battery pack, where the discharge circuits include a power transistor. The use of a power transistor yields a controllable balancing current through that transistor between a cathode and anode of the individual cell. A microcontroller monitors a state of charge of each cell, such as by measuring the cell voltages, and provides control signals, for example indicating a target voltage for each cell, that drive the power transistors in designated discharge circuits.

The invention discloses a method for curing a seal agent. Before the seal agent is cured by ultraviolet rays, a non-transparent film is formed at the ultraviolet ray incidence side of a liquid crystal panel so as to replace a traditional ultraviolet ray mask. The non-transparent film is at least provided with a hollow structure which is opposite to the position of the seal agent; the ultraviolet rays can be irradiated to the seal agent at a specific angle through the hollow structure which is opposite to the position of the seal agent to realize a process for curing the seal agent. As the non-transparent film is directly formed on the liquid crystal panel, and no gaps exist between the non-transparent film and the liquid crystal panel, the phenomenon that the ultraviolet rays skew in the horizontal direction due to the distance from the ultraviolet ray mask to the liquid crystal panel can be eliminated; the total skewing amount in the horizontal direction when the ultraviolet rays are emitted into the liquid crystal panel from the ultraviolet ray mask is reduced; the possibility that display is abnormal due to the fact that the ultraviolet rays are irradiated to an effective display area is prevented, and the design difficulty of a narrow-border liquid crystal panel is lowered. Moreover, the ultraviolet ray mask is replaced by adopting the non-transparent film, so that the cost of the ultraviolet ray mask can be saved.

A method for adaptively determining one or more faults from geological survey data includes: (a) generating at least one attribute volume comprising a plurality of attributes from said geological survey data; (b) identifying at least one region of interest on a predetermined cross-section of said at least one attribute volume; (c) adding at least one seed to said at least one region of interest; (d) defining at least one representative area in accordance with said region of interest; (e) starting an initial generation of at least one basic geological object by adapting said at least one seed and/or representative area; (f) selectively determining growth confidence levels for any of said at least one basic geological object based on a realistic geological principles, and mapping said at least one basic geological object with colour-coded data of said growth confidence levels; (g) monitoring a visual representation of said at least one basic geological object during said initial generation; (h) selectively stopping said initial generation of said at least one basic geological object; (i) generating at least one optimized geological object through manipulation of at least part of said at least one basic geological object, wherein said at least one basic geological object is generated by applying a mesh propagation algorithm adapted to generate a surface mesh from said at least one seed, and which includes at least on predetermined constraint, including at least one external force, obtained from empirical geological data, and at least one internal force adapted to maintain the surface shape of said surface mesh.

A CT collimator comprising a rotating slot part on a rotation shaft and having a plurality of blades, each blade has a slot of a different width and a radiation beam entering the collimator can only pass via a slot in one of the blades, each edge of each blade slot along a longitudinal direction has a convex curved surface structure, and in a vertical plane along a longitudinal direction, two side edges of the slot are curved, and each blade is arranged to be eccentric to the center of the rotation shaft. A CT system using the CT collimator, the detection area of the radiation rays projected to the radiation detector via the CT collimator can be maintained unchanged by adjusting the rotation angle of the blade, under the circumstance where the focus of the radiation source shifts during a CT scan.

The invention provides an automatic wooden door assembly machine. The automatic wooden door assembly machine can realize automatic feeding, assembly, glue applying and the like, thereby reducing the labor intensity of workers, increasing the working efficiency and reducing the labor cost. The automatic wooden door assembly machine comprises a base, wherein the base comprises a rack as well as a first bracket and a second bracket which are parallel and arearranged on the rack; detachable door sheet clamps and cross beam clamps are symmetrically arranged in the front of the upper sides of the first bracket and the second bracket; longitudinal beam conveying devices are arranged on the outer sides of the first bracket and the second bracket; overturningdevices are arranged on support frames of the longitudinal beam conveying devices; upper ends of the first bracket and the second bracket are fixedly connected with support seats respectively; a glue dispensing device and a horizontal pressing device are arranged on a support beam at the upper part of each support seat; inner side surfaces of the first bracket and the second bracket are connected with horizontal conveying mechanisms through piston rods of lifting cylinders.

The invention belongs to the technical field of steel pipe end machining and particularly relates to a system used for clamping and aligning the pipe end of a long steel pipe before the pipe end of the long steel pipe is milled and bored. The steel pipe end alignment system comprises a clamping device mounted in front of a machine tool, lifting and conveying roller ways, rotating devices, a transverse movement lifting and conveying roller way and detection devices. The steel pipe clamping device is arranged close to the machine tool and used for clamping the pipe end of the steel pipe and guaranteeing the roundness of the pipe end of the steel pipe. The transverse movement lifting and conveying roller way is arranged far from the machine tool and used for conveying the steel pipe and adjusting the position of the other end of the steel pipe, so that the center of the clamped end of the steel pipe is coaxial with the rotation center of a cutter head. The lifting and conveying roller ways and the rotating devices are alternately mounted in the axial direction of the steel pipe. The detection devices are mounted in the middle and on the lower portion of the end, close to the machine tool, of the clamping device respectively, one detection device is used for detecting a side mother line of the steel pipe, and the other detection device is used for detecting a lower mother line of the steel pipe. The steel pipe end alignment system is low in improvement cost; after the steel pipe is aligned by the steel pipe end alignment system, the percent of pass of the end, machined by the cutter head of the milling and boring machine tool, of the steel pipe is high, and the production efficiency is improved.