374results about How to "Guaranteed Alignment Accuracy" patented technology

The invention discloses a determined method for an initial gesture on the basis of Doppler optical fiber gyro strapdown inertial navigation system, which comprises continuously collecting data which is output by an optical fiber gyro and a quartz flexible accelerometer after being preheated, processing the data of the gyroscope and the accelerometer which are collected, finishing a rough alignment of the strapdown inertial navigation system, entering into an extractive alignment after the rough alignment is finished, establishing a dynamic base error equation of a marine strapdown inertial navigation system, employing an optimal control filtering theory to design an electric filter, and doing a filtering estimation, extracting information of ship hull gesture misalignment angle to correct the ship hull gesture when a combined extractive alignment is finished, finishing extractive initial alignment, simultaneously obtaining shift estimated value of the gyroscope, and realizing a drift course of the initial alignment. The method of the invention can realize accurate estimation to a zero drift of the optical fiber gyro when the requirement of accuracy and rapidity is guaranteed.

The invention provides a mask and a preparation method and application of the mask. The mask which is made from an Invar material and cannot control the etching precision easily is replaced by a flexible thin film with the opening precision controlled by laser etching, so that the preparation precision of a fine metal mask (FMM) is improved and the opening ratio of the screen body is increased. The invention provides two preparation schemes. In the first embodiment, the fine mask is fully made from a high-strength magnetic flexible material, the mask and a base plate are fully attached through magnetic attraction, and the mask does not need to be fixed on a stainless steel frame. In the second embodiment, the opening degree of the mask made from the Invar material is increased, the opening area is filled with a flexible material, and small holes are etched in the flexible material by using a laser etching method, so that the precision of the FMM is improved.

The invention provides an onboard distributed type POS real-time transmission alignment method based on federal filtering. An onboard distributed type POS is composed of a high-precision main POS and a plurality of secondary IMUs. Aiming at the problem that the instantaneity requirements of onboard distributed type POS real-time transmission alignment are high, the federal filtering based on a dispersion structure is used for transmitting and aligning. Firstly, a federal filterer structure design is carried out, namely two secondary filters and one main filter are designed; secondly, mathematic models of the two secondary filters are established to carry out Kalman filtering to obtain partial estimation; then, the main filter is used for estimating an overall situation filtering solution, and resetting the two secondary filters and the main filter; and finally, the positions, speeds and postures of the secondary IMUs are more accurately calculated by using a reset estimation state amount.

The invention discloses a local high-precision printed circuit board and a manufacturing method thereof. The whole printed circuit board is divided into a high-precision graphic area and a common graphic area. The manufacturing method comprises the steps of inner-layer graph manufacturing, press-fitting, drilling, outer-layer film drying and follow-up procedures. According to the press-fitting step, the Pin-Lam technology is adopted for conducting manufacturing; after the press-fitting step is executed, a graphic inner positioning hole is punched, so that a local expansion coefficient of the high-precision graphic area is calculated. According to the drilling step, a local drilling file is set according to the local expansion coefficient, meanwhile, an LDI datum hole is formed, drilling is carried out on the high-precision graphic area, and the datum hole is drilled; then drilling is carried out on the common graphic area through the whole board expansion coefficient. According to the outer-layer film drying step, the LDI technology is adopted. According to the manufacturing method, the drilling alignment precision of the local high-precision printed circuit board can be effectively improved, highly-difficult drilling can be carried out, the drilling misregistration scrap rate is greatly reduced, and the process is simple.

The invention discloses an impact piece exploder and a manufacture method thereof. The manufacture method comprises the following steps: using half curing adhesive to axially couple together a reflective sheet, a bridge foil, a flyer and an accelerating chamber in sequence, wherein the reflective sheet, the flyer and the accelerating chamber are made of polyimide; using a first polyimide layer to form a reflective sheet layer; pressurizing and bonding the reflective sheet layer; using a second polyimide layer and a copper foil layer to form a composite film; then, exposing, developing and etching the copper foil layer of the composite film to acquire the bridge foil; using bonding glue to glue a polyimide film on the surface of the bridge foil to serve as the flyer layer; then, processing the accelerating chamber on a third polyimide layer and a fourth polyimide layer; using the half curing adhesive to pressurize and bond the reflective sheet, the bridge foil, the flyer and the accelerating chamber in a counterpoint manner; and finally, blanking the impact piece exploder on a punch. The impact piece exploder is high in reliability, low in material cost, and convenient for automatic mass production.

The invention discloses a PCB (printed circuit board) and film alignment device, which comprises a rack and the following parts installed on the rack: an X-Y-theta three-freedom degree adjustment mechanism; a rectangular vacuum adsorption platform fixed on the X-Y-theta three-freedom degree adjustment mechanism and used for PCB adsorption, with light transmitting parts disposed at four corners of the vacuum adsorption platform and extending along diagonal lines; two two-point compression mechanisms arranged over the vacuum adsorption platform relatively; four CCD lens that are mounted below the X-Y-theta three-freedom degree adjustment mechanism, read alignment marks at four corners of the PCB and the film through the light transmitting parts, are in rectangular arrangement and mounted on one spacing adjustment mechanism, and are in connection with a controller, the control end of which is connected to the X-Y-theta three-freedom degree adjustment mechanism; and light sources for providing illuminance conditions for the four CCD lens. The alignment device disclosed in the invention improves the alignment accuracy and alignment efficiency.

The invention provides a wave-front sensor and corrector aligning device in a self-adaptive optical system, which consists of a wave-front sensor, a wave-front recorder, a wave-front corrector, an electric control transverse moving table, a position mismatching evaluating device, a transverse moving table controller and a computer, wherein the electric control transverse moving table can transversely move and rotate, the position of the wave-front corrector is marked in a mode of exerting the voltage to an independent unit of the wave-front corrector through the computer, and the position mismatching between the wave-front sensor and the wave-front corrector is measured through the self wave-front detection capability of the wave-front sensor. Light beams enter the wave-front sensor through being reflected by the wave-front corrector, the face shape information of the wave-front corrector detected by the wave-front sensor is recorded by the wave-front recorder, the position mismatching evaluating device carries out the calculation according to the recorded information of the wave-front recorder and outputs the position mismatching data into the transverse moving table controller, and finally, the transverse moving table controller is used for controlling the electric control transverse moving table for completing the position regulation of the wave-front sensor. The invention can accurately align the positions of the wave-front sensor and the wave-front corrector, can greatly improve the aligning precision and the aligning efficiency of the wave-front sensor and the wave-front corrector, and can ensure the wave-front control capability of the self-adaptive system.

The invention discloses an exposure alignment method for a glass substrate. The method comprises the following steps of: treating a reference piece by using a reference piece masking technology, and exposing the treated reference piece by an exposure machine and a first layer of optical mask plate; calculating the positions of a first inner mark, a first external mark, a second inner mark and a second external mark of the reference piece, and storing calculated data as the alignment references for exposure; and treating one glass substrate by using the glass substrate masking technology, and exposing by the exposure machine and one glass substrate optical mask plate, and projecting at least two layers of exposure regions, and at least one splicing region on the glass substrate, wherein the splicing region is subjected to alignment exposure according to the data. The data of the first inner mark, the first external mark, the second inner mark and the second external mark which are formed by the reference piece during the exposing are calculated and stored, and thus, the splicing region exposed by the glass substrate can take the data as the alignment references, the pattern alignment accuracy in the exposure of the glass substrate is guarantee, and the offset of exposed patterns of the glass substrate can be avoided.

The invention relates to a backtracking type self-aligning method of a single-axial rotation strapdown inertial navigation system. According to the method, an initial curing coarse alignment method is adopted to process sampled data of a gyroscope and an accelerometer in real time, the gesture matrix of initial time is calculated, during the process, key data is synchronously compressed and stored for each second; after coarse alignment, the stored data is used to carry out backtrack Kalman filtering fine alignment, positive calculation is performed till the end, and in a Kalman filtering device, the installation rod arm is set in an error state to carry out online estimation. The provided method can guarantee the alignment precision and alignment time, at the same time, avoids the tedious reverse navigation calculation, reduces the memory space and calculation amount, and improves the engineering practicality.

The invention discloses a dual-polarization-mode lithium niobate straight waveguide phase modulator and a preparation method thereof. The device comprises a lithium niobate optical waveguide chip and a polarization-holding tail fiber, wherein the lithium niobate optical waveguide chip comprises a lithium niobate substrate (1), a surface strip titanium diffusion waveguide region (2), a surface proton exchange region (3), a silicon dioxide isolation layer (4) and a surface metal electrode (5). The preparation method of the modulator comprises a preparation method of the chip and a coupling connection method of the chip and the polarization-maintaining tail fiber. The manufacture method of the chip mainly comprises the following process steps of: diffusing titanium in a strip waveguide region; annealing and exchanging protons in a non-titanium-diffusion waveguide region, and the like. The chip structure and the preparation method can ensure that the device simultaneously has less loss and polarization-related loss. The coupling connection method of the chip and the tail fiber ensures that the device has lower polarization crosstalk and the temperature stability of the performance index of the device.

The invention discloses an end-to-end voice synthesis method and system based on a DNN-HMM bimodal alignment network, and belongs to the field of intelligent voice interaction. According to the method, a frame length prediction module is used for replacing a traditional end-to-end attention autoregressive structure, and a convolutional change module and a bidirectional long-short-term memory network are used for constructing an encoder and a decoder, so that a large number of model parameters are reduced. On the basis that a phoneme frame length sequence is obtained through DNN-HMM bimodal alignment network training, an end-to-end voice synthesis model is trained, and thus the process that a traditional end-to-end voice synthesis model obtains text and audio alignment information in an autoregressive attention mode is avoided. The trained model not only can ensure the high naturalness of the audio synthesized by the end-to-end model, but also can greatly reduce the consumption of computing resources and the time proportion during voice synthesis, so that the end-to-end voice synthesis technology can be deployed on hardware with low computing resources.

The present invention provides a method for mounting shipping stern tube bushing, the bushing mounting position of the shipping stern tube processes to an epoxide resin plug hole, inner diameter of stern shaft tube is smaller than outer diameter of bush which is placed in lining mounting position of stern shaft tube, the bush is adjusted to location and gap between outer edge of two ends of lining and stern shaft tube is sealed, filling liquid epoxide resin in chamber betwwen lining and stern shaft tube by epoxide resin plug hole, the lining is exactly fixed in the stern shaft tube by solified epoxide resin. The mounting method of shipping stern tube lining has safe, credible characteristics, and shortens mounting cycle, reduces power strength.

The invention relates to an LCD panel, comprising a substrate, a pin, a first register mark and a second register mark, wherein the pin, the first register mark and the second register mark are arranged on the substrate, the first register mark is used for contraposition of the pin in a pressing manner, and the first register mark and the second register mark are in different shapes. The LCD panelcan ensure that an imaging element of a pressing machine does not mistake the register mark during the process that a flexible printed circutit is pressed on the LCD panel so as to more effectively ensure contraposition accuracy.

The invention provides a metal meshed plate comprising a first area, a second area and a third area, wherein the first area is located on the surface of the metal meshed plate and comprises first through holes distributed in an array manner, the second area comprises second through holes distributed in an array manner, the second through holes are arranged around the first area, and the third area comprises third through holes which are distributed in an array manner and arranged around the second area. The metal meshed plate has the beneficial effects that the surface of the metal meshed plate is provided with a deformation absorption area, in the meshed plate stretching technology, the metal meshed plate is continuously adjusted and stretched, wrinkles, corresponding to the display area, of the metal meshed plate can be transferred to the deformation absorption area, it is guaranteed that the alignment precision between the metal meshed plate and pixels is guaranteed, and then the accuracy of substrate evaporation is improved.

The invention provides a wireless charging alignment method and device, a wireless charging system and an electric vehicle, and belongs to the field of wireless charging. A first detection circuit inthe wireless charging alignment device can detect a first induction signal of a power receiving coil in a positioning magnetic field generated by a power transmitting coil; and a second detection circuit can detect a second induction signal of the position detection coil in the positioning magnetic field, and the position determination circuit can determine a position of the power receiving coil relative to the power transmitting coil according to the first induction signal and the second induction signal. Compared with the prior art that a driver visually observes the relative positions of the two coils, by using the method, the device, the system and the electric vehicle of the invention, determined precision of the relative positions according to the two types of induction signals is higher, and therefore the alignment precision of the power receiving coil and the power transmitting coil can be effectively improved.

The invention discloses a method for initial alignment of an inertial navigation system based on particle filtering, which comprises the following steps: establishing a horizontal attitude angle calculation model based on two positions; establishing a course angle calculation model based on two positions; establishing a non-linear initial alignment model based on two positions; constructing a Gaussian particle filter for initial alignment; and collecting output information of an inertia device with a navigation computer and completing filtering for initial alignment. The invention adopts the two-position method to eliminate constant errors of the inertial device, thereby avoiding the state expansion for the errors of the inertial device and reducing the dimensions of the initial alignment model while ensuring the alignment precision. Since the dimensions of the non-linear initial alignment model based on two positions are only three-dimensional, the invention is suitable for engineering application of the particle filtering algorithm in initial alignment, satisfies the real-time requirements of particle filtering in initial alignment of the inertial navigation systems, and improves the accuracy and speed of initial alignment of the inertial navigation system.

The invention relates to a transmission shaft straightening machine. The straightening machine comprises a rack, a workbench connected to the center of the rack, a pressing cylinder connected above the rack and used for straightening a transmission shaft, and a detection mechanism used for detecting circumferential run-out of the transmission shaft. A clamping mechanism used for fixing the transmission shaft is arranged above the workbench, and a driving mechanism used for driving the clamping mechanism to slide is arranged on the side part of the workbench; the detection mechanism used for detecting the circumferential run-out of the transmission shaft is connected to the side part of the clamping mechanism, and the clamping mechanism comprises a main shaft head, and a main machine and adisc brake mechanism which are connected to the side part of the main shaft head; and the driving mechanism comprises a frame plate, a screw rod and an auxiliary machine, wherein the screw rod and theauxiliary machine are connected to the side part of the workbench, and the center of the screw rod is movably connected with a nut connected with the frame plate. The transmission shaft straighteningmachine can be used for straightening the transmission shaft, the operation complexity of conventionally manual straightening, by an operator, on the transmission shaft is changed, and the straightening accuracy and convenience of the transmission shaft are effectively improved.

The invention discloses a thin-film bonding machine table, a thin-film bonding method and a manufacturing method of a solidifying film layer. The thin-film bonding machine table comprises a first bearing table, a clamp device, a second bearing table and a press element, wherein the first bearing table is provided with a first bearing surface which is used for bearing boards, the clamp device is arranged at one side of the first bearing table, the second bearing table which is provided with a second bearing surface used for bearing soft thin films is positioned above the clamp device, and the press element is arranged at one end of the second bearing table. When the soft thin films are bonded on the boards, the clamp device is used for clamping one end of the soft thin film, the clamp device is driven by the first bearing table to jointly move along a feeding direction corresponding to the second bearing table, and the soft thin film slides on the second bearing surface and is pressed on the board passing through the underside of the press element by the press element.

The invention relates to a wine box facial tissue automatic positioning and forming machine, which comprises a frame (10), a positioning platform (20) arranged on the frame, and a transmission mechanism (30) capable of conveying facial tissue to the positioning platform, and the wine box facial tissue automatic positioning and forming machine also comprises a camera device (40) arranged on the positioning platform, a positioning mechanism (50) and an adjusting mechanism (60) arranged between the frame and the positioning platform, and a control system (70) used for controlling the positioning mechanism and the adjusting mechanism, wherein the camera device is electrically connected to the control system. The wine box facial tissue automatic positioning and forming machine employs a CCD image automatic contraposition system and realizes advantages of high efficiency and high precision, a three-axis adjustment system is employed for realizing the adjustment along a horizontal transverse and vertical direction, and the adjustment of angle, so that contraposition is more accurate, and the contraposition precision can be ensured.

The invention provides a secondary quick alignment method of a marine strapdown inertial navigation system. The method comprises the following steps: continuously collecting output data of an optical fiber gyro and a quartz flexible accelerometer after preheating the system, and processing the collected data to finish the rough alignment of the strapdown inertial navigation system; performing primary fine alignment after the rough alignment, creating an error equation of the marine strapdown inertial navigation system, performing Kalman filtering by using a speed error as observed quantity so as to obtain an estimated value of a misalignment angle, and compensating the ship body posture; and expanding the residual misalignment angle to a new state variable by using the compensated posture as a reference posture on the basis of the primary fine alignment, and further aligning the levelness and the direction through using a speed and misalignment angle error matching method. The method disclosed by the invention can be used for accurately estimating zero offset of a horizontal accelerometer on the condition of ensuring the alignment precision and quickness.

The invention provides a rock core holder for CT scanning and relates to the technical field of oil-gas field development. The rock core holder comprises a rubber sleeve, a carbon fiber cylinder and an electric heating sleeve which are sequentially arranged in a sleeved mode from inside to outside and are vertically through cylindrical bodies, an annular confining pressure cavity is formed between the rubber sleeve and the carbon fiber cylinder, a thermocouple is arranged in the confining pressure cavity, the thermocouple and an electrical heating sleeve are electrically connected with a temperature controller, the top end of the carbon fiber cylinder is in sealed connection with a plug, the bottom end of the carbon fiber cylinder is in sealed connection with a base, the plug, the base and the inner wall surface of the rubber sleeve define a core-containing holding cavity, a liquid flowing-out hole communicated with the holding cavity is formed in the plug, a liquid injection hole communicated with the holding cavity and a confining pressure liquid injection hole communicated with the confining pressure cavity are formed in the base, and the rock core holder can achieve stable core scanning under high-temperature and high-pressure conditions.

The invention belongs to the technical field of micro plastic forming and dies and relates to a multi-scale precision micro deep drawing die allowing real-time forming detection of ultrathin plates. The die comprises combination type male dies, female dies and blank holders, and macro parts as well as micro / mesoscopic parts can be formed by changing different male dies, female dies and the blank holders. The die is provided with a real-time detection mechanism, and macroscopic deformation and surface appearances of the ultrathin metal plates can be observed and microscopic grain size and changes can be observed as well by changing telecentric lenses of different focal lengths. When the male dies are replaced, micro circumferential movement of the male dies in a male die fixing plate can be realized through clearance fit of the male dies and the male die fixing plate, alignment of the male dies to holes of the blank holders can be benefited, and bending of the male dies is avoided. By the aid of a partitioned blank holder device, micro separation and closure of the blank holders can be realized through a screw mechanism, and high precision in alignment of the male dies and the female dies can be guaranteed, thereby more precise stamping force can be measured.

The high precision combined grating device for 3D optical measurement includes 13 grating patterns etched on quartz glass via electronic beam scanning process, including 1 projector calibrating grating, 1 all-white grating, 8 Gray code gratings and 4 phase shift gratings, with the first phase shift grating being the last Gray code grating. All the gratings are in the same size, and have parallel stripes arranged orderly on the quartz glass and in the shift direction of the projecting mechanism to ensure the alignment precision. The present invention can meet the requirement of 3D optical measurement based on the Gray code method and 3D optical measurement based on phase shift method simultaneously, ensues the measurement precision and stability and has practical engineering application value.

The invention discloses a mask plate and an alignment detection system for the evaporation of a display panel. The mask plate comprises a substrate and an alignment mark arranged on one side of the substrate. The reflectivity of the alignment mark on the light is larger than the reflectivity of the substrate on the light. The reflectivity is in direct proportion to the reflection intensity. Based on the difference between the reflection intensities of the substrate and the alignment mark on the light, the alignment mark is recognized, and then the position of the mask plate is determined. Based on the above manner, the position of the mask plate can be judged.

The embodiment of the invention provides a method and device for calibrating finishing mill inlet side guide plates. The method and device for calibrating the finishing mill inlet side guide plates are used for improving the calibration precision of the side guide plates, accordingly, the alignment precision in the rolling process is ensured, and the strip steel quality is improved. The first sideguide plate and the second side guide plate are oppositely arranged between a first housing and a second housing at an inlet of a finishing mill. The method and device for calibrating the finishing mill inlet side guide plates are characterized in that the first side guide plate is controlled to move to the first preset position according to the first preset manner, and the second side guide plate is controlled to move to the second preset position according to the second preset manner; the aperture value between the first side guide plate and the second side guide plate, the first distance between the first side guide plate and the first housing and the second distance between the second side guide plate and the second housing are detected; and based on the aperture value, the first distance and the second distance, the aperture values of the first side guide plate and the second side guide plate are calibrated.

An embodiment of the invention discloses an antenna alignment method and system. Handshake information of two end antennas mutually aligned is scanned in a negative SNR (signal-noise ratio) communication manner; a curve or surface of receiving statistic changing with angle is generated according to the receiving statistic of a carrier signal; a rough scanning range is determined according to the curve or surface of the receiving statistic changing with the angle, generated according to the receiving statistic; the end antennas perform alternate rough scanning; accordingly, antenna alignment is achieved. The antenna alignment method and system has the advantages that alignment accuracy is guaranteed, alignment time is shortened, manpower cost is saved, and mass application of microwave links is facilitated.

The invention discloses an argon tungsten-arc welding clamp for butt joint of thin steel strips and a using method. A clamp pressing block is based on a piano keyboard clamp and still adopts a piano keyboard pressure block by utilizing the characteristics of even clamping force and high reliability of the piano keyboard clamp, and meanwhile, a movement mechanism of the clamp is designed. Therefore, the clamp can move in a clamping process of a test specimen, so that the steel strips can be conveniently fed, clamped and taken out after being weld, so as to finish taking out of the test specimen. The defect that the traditional piano keyboard clamp cannot be used for welding long steel strips and has complicated clamping procedure is overcome, and meanwhile, the disadvantages of uneven stress of the test specimen caused in a pressing process of a lifting clamp are also overcome, and the argon tungsten-arc welding clamp has high use value.

The invention relates to a printed circuit board manufacturing method and a printed circuit board. The printed circuit board manufacturing method comprises the following steps: a group of first targets is arranged in at least one corner of a substrate, and a second target used as an alignment benchmark for a build-up layer adjacent to the substrate is arranged in a corner of the substrate not equipped with a first target; the build-up layer is press-fitted, and a target hole is formed in a corresponding position of the build-up layer with the second target and the first target which is arranged on the substrate and corresponds to the same build-up layer as the second target as a benchmark; and with the target hole as an alignment benchmark, graphic transfer is performed on the build-up layer where the target hole is arranged, and graphic transfer further includes the step of forming a second target used as an alignment benchmark for a relatively outer build-up layer on the build-up layer where the target hole is arranged; and the previous two steps are repeated to complete manufacture of a printed circuit board. The method effectively reduces possible alignment error in the process of high-order HDI printed circuit board manufacturing, and improves the reliability of the product.

The invention discloses a great-size touch screen panel joint device and method. The joint device comprises a rolling device and a jointing die, wherein the jointing die is internally sequentially provided with a panel groove and a main body groove from top to bottom, and the panel groove is communicated with the main body groove; the thickness of the panel groove is equal to the thickness of a touch screen panel, the internal size of the panel groove adapts to the outline of the touch screen panel; and the thickness of the main body groove is equal to the thickness of a touch screen main body, and the internal size of the main body groove adapts to the outline of the touch screen main body. When the joint device is applied, the touch screen main body is more accurately aligned to the touch screen panel by using a jointing die, and then the rolling is carried out by using the rolling device for completing the jointing of the great-size touch screen panel. The invention fills up the blank that no relevant processing devices and corresponding processes are used for jointing the great-size touch screen panel in the industry; alignment precision of the joint device can be ensured, and no bubbles are generated when the joint device is jointed; and meanwhile, the joint device has the advantages of simple structure, easiness in operation, and capability of greatly increasing production efficiency.