33results about How to "Increase the number of particles" patented technology

The invention relates to a three-dimensional laser positioning method and system. The method comprises the following steps: predicting a predicted pose of a robot at a certain moment relative to a previous moment according to data acquired by an encoder; arranging a plurality of particles near the predicted pose, observing each particle, comparing the observed environment information data with a voxel distance map, and calculating the coefficient of each particle according to the similarity of comparison; filtering particles with low coefficients according to the coefficients, and carrying outcircular filtering for multiple times until the particle with the optimal coefficient is found out; and carrying out smooth filtering processing on the pose corresponding to the particle with the optimal coefficient, and outputting the final pose of the robot. According to the method, the query speed can be increased, and the positioning precision can be improved.

The invention discloses an Er<3+> / Yb<3+> co-doped yttrium lithium fluoride monocrystal and a preparation method thereof. The yttrium lithium fluoride monocrystal is a rare earth ion Er<3+> / Yb<3+> co-doped monocrystal; the molecular formula is LiY(1-x-y)ErxYbyF4, wherein x is greater than or equal to 0.008 and less than or equal to 0.085, and y is greater than or equal to 0.002 and less than or equal to 0.170; the segregation coefficients of Yb<3+> and Er<3+> in the yttrium lithium fluoride are about 1, and efficient intermediate infrared laser of 2.7 microns can be output; and the yttrium lithium fluoride monocrystal has high transmittance of intermediate infrared laser, has better thermal, mechanical and chemical stabilities than those of glass state materials and has the characteristics of low phonon energy, high optical transmittance of wavebands with width of 300-5500nm, less color center forming amount, low thermal lens effect and the like, thereby being more easily processed and more suitably used in laser devices. In the preparation method disclosed by the invention, a sealing crucible falling technology is used, so that the operation is simple; the raw material is fluorated at high temperature in a sealed water-free and oxygen-free environment, so that the crystal is isolated from air and water vapor during the growth; and therefore, the high-quality Er<3+> / Yb<3+> co-doped LiYF4 monocrystal containing little OH<-> ion and oxide is obtained.

The invention discloses a solid oxide fuel cell gradient porosity anode and a solid oxide fuel cell. The solid oxide fuel cell gradient porosity anode comprises an anode function layer, an anode transition layer and an anode support layer which are connected in sequence from top to bottom. The opening porosity of the anode transition layer is greater than or equal to the opening porosity of the anode function layer. The opening porosity of the anode transition layer is smaller than or equal to the opening porosity of the anode support layer. The opening porosity of the anode function layer, the opening porosity of the anode transition layer and the opening porosity of the anode support layer are in gradient gradual decrease along a horizontal direction, or the opening porosity of the anodefunction layer, the opening porosity of the anode transition layer and the opening porosity of the anode support layer are in gradient gradual increase. The anode is characterized by relatively low activation polarization, concentration polarization and ohm polarization loss. The fuel cell is characterized by high output electrical property and high intensity.

The invention provides a preparation method and an application of a novel adsorptive iron salt compound flocculant. The method comprises the following steps: (1) mixing activated carbon powder and poly-ferric sulfate powder at a mass ratio of (1-0.3):1; (2) adding into a stirrer, grinding, and mixing to obtain mixed powder; and (3) compounding the mixed powder and polyacrylamide at a mass ratio of 99:1, grinding, and mixing to obtain the novel adsorptive iron salt compound flocculant. The novel flocculant of the invention is prepared from poly-ferric sulfate flocculant, activated carbon and polyacrylamide as the raw materials, in which the poly-ferric sulfate flocculant can remove the dispersed impurities and macromolecular organic matters in water (which cannot be well adsorbed by powdered activated carbon), and the powdered activated carbon can remove micromolecular organic matters that are hardly removed by coagulation, so that the treatment capacities for removing organic matters of the poly-ferric sulfate flocculant and the powdered activated carbon are both further improved.

The invention discloses a rock dust polymerization and moisture-preservation inhibitor for coal mines and an adding device thereof. The rock dust polymerization and moisture-preservation inhibitor comprises the following components in percentage by weight: 0.05%-0.07% of cocamidopropyl betaine, 0.05%-0.07% of magnesium chloride, 0.05%-0.07% of sodium fatty alcohol polyoxyethylene ether carboxylate and the balance being water. The invention further provides an automatic adding device of the rock dust polymerization and moisture-preservation inhibitor for the coal mines. The cocamidopropyl betaine and the sodium fatty alcohol polyoxyethylene ether carboxylate have good wettability; after cocamidopropyl betaine and the sodium fatty alcohol polyoxyethylene ether carboxylate are compounded, the surface tension of water can be greatly reduced and the contact possibility of fog drops and dust particles is promoted; the magnesium chloride has a good moisture preservation performance so that the moisture preservation content of the captured dust particles is greatly enhanced, and a secondary dust raising phenomenon caused by water evaporation is prevented.

A suspended particle flux measurement device using synchronous polarization and fluorescence, including a light source, a polarizer, an illumination optical system, a first receiving optical system, a second receiving optical system, a polarization imaging system, a fluorescence camera, and an image processing terminal, the light source The emitted light passes through the polarizer to generate incident polarized light, which is converted into a sheet light source through the illumination optical system, and illuminates multiple suspended particles in a liquid section. The first and second receiving optical systems are set at two symmetrical scattering angles , receive the scattered light of the suspended particles and send them to the polarization imaging system and the fluorescence camera respectively, so that each suspended particle forms a polarization image point and a fluorescence image point on the polarization imaging system and the fluorescence camera respectively, realizing multiple For the measurement of the flux of suspended particulate matter, the polarization-fluorescence synchronous measurement data of each suspended particulate matter is used to determine the type information of the suspended particulate matter. The device can quickly and high-throughput identify suspended particulate matter in water.

The integrated circuit (1) according to the invention comprises a set of cells (10), each of the cells (11, 13, 15, 19) comprises an electrical device (20) with a device parameter whose parameter value is a function of random parametric variations. The set of cells (10) comprises a first subset (12) of identification cells (13) with first random parametric variations, and a second subset (14) of cells (11, 15,19), which are able to generate an identification code by measuring the random differences between the parameter values of the identification cells (13). According to the invention the cells (11, 15, 19) of the second subset (14) have second random parametric variations, which are smaller than the first random parametric variations, thereby making the generation of the identification code relatively easy.

The invention discloses a method for real-time tracking and precise estimation of GLONASS phase-frequency deviation based on particle filtering, comprising the following steps: Step 1: data preprocessing, importing satellite ephemeris, pseudo-range observation value and phase observation value of current historical cloud ; Step 2: Establish double-difference pseudorange and carrier phase observation equations, and obtain the single epoch method equation or the previous epoch accumulation method equation after linearization; Step 3: Correct the phase deviation in the method equation according to the particle value, and solve the algorithm equation ; Update the weight of the particle filter, calculate the value of the phase-frequency deviation rate and the root mean square of the particle; Step 4: Repeat step 1-3, real-time tracking or precise estimation of the value of the phase-frequency deviation rate; after the filter converges, pass the phase frequency The value of the inter-frequency deviation rate is corrected for the phase-frequency deviation, and the ambiguity of the whole cycle is fixed to realize precise estimation; the invention can efficiently realize the real-time tracking of the inter-frequency deviation and GLONASS precise positioning with no difference in the receiver type.

The invention relates to the technical field of glucosamine hydrochloride production, and discloses a hydrolysis device for the production of glucosamine hydrochloride, including a hydrolysis box, the upper end of the hydrolysis box is hollowed out, and the four corners of the upper end of the hydrolysis box are vertically fixed and installed with supports The support rods are rectangular long rods, and the upper ends of the four sets of support rods are fixed with storage boxes. The inner lower end of the storage boxes is provided with a row of leakage grooves horizontally. The leakage grooves are rectangular grooves and the leakage grooves run through the bottom of the storage box up and down. The inner wall and the inside of the leakage trough are movably equipped with a turning plate through a rotating shaft. The turning plate is a rectangular plate and the turning plate can be freely turned inside the leakage trough through a rotating shaft. In the present invention, the hydrolysis bearing plate is set so that the hydrochloride can be spread on the inside of the hydrolysis bearing plate after falling into the interior of the hydrolysis bearing plate, and then the hydrolysis bearing plate moves downward to contact with water, so that the hydrochloride is in contact with the hydrolysis solution More uniform, increasing the rate of hydrolysis of hydrochloride.

The present invention involves a foam, including pre -treated titanium hydroxide particles and metal particles. The metal particles are evenly mixed with the pre -treated titanium hydroxide particles. The metal particles can wet with the aluminum melt.Titanium particles include titanium hydrogenation and oxide films existed on the surface of titanium hydride.The present invention also involves a preparation method for foaming agents, including the heat treatment of titanium hydroxide particles in the oxygen -containing atmosphere, which oxidize the surface of titanium hydrogenated particles;Titanium particles are broken.The present invention also involves a preparation method for foam aluminum.

The invention provides a hot working method for improving mechanical properties of medium carbon steel, and relates to the technical field of metal material science. The hot working method comprises the step: the medium carbon steel is sequentially subjected to high-temperature and high-pressure heat treatment and low-temperature and high-pressure heat treatment. The medium carbon steel is subjected to high-temperature and high-pressure heat treatment to obtain a fine martensite structure with the high dislocation density, dislocation provides more positions for precipitation of carbide in thesubsequent low-temperature and high-pressure heat treatment process, and the number of precipitated carbide particles is increased; and through low-temperature and high-pressure heat treatment, the diffusion coefficient of atoms is decreased under the high pressure effect, thus the number of the precipitated carbide particles is large, the precipitated carbide particles are not prone to growing up and thus are finer and more dispersed, the dispersion enhancement effect is enhanced, and the hardness and strength of the medium carbon steel are increased. Compared with the same process normal-pressure heat treatment, the hardness value and compression yield strength of the medium carbon steel treated through the hot working method are increased by 10.00-12.12% and 10.77-14.33% correspondingly.

The invention discloses a rotary magnetron target and horizontal magnetron sputtering coating equipment. The rotary magnetron target comprises a target, a magnetic core and a magnet, wherein the magnetic core is arranged at the middle part of the target, at least one magnet is arranged at the periphery of the magnetic core, and one end facing the target, of the magnet, is conical. The horizontal magnetron sputtering coating equipment comprises a front pre-pumping chamber, a front rough-pumping chamber, a front fine-pumping chamber, a front buffering chamber, a coating chamber, a rear buffering chamber, a rear fine-pumping chamber, a rear rough-pumping chamber and a rear pre-pumping chamber which are sequentially connected, wherein one or more coating chambers are provided, and one rotary magnetron target is arranged in each coating chamber, and located above a workpiece. According to the rotary magnetron target, the tail end of the magnet is designed to be a tip, thus the distribution density of magnetic force lines on the surface of the target is enhanced, and the number of the sputtered target particles can be increased, and then the coating efficiency of the surface of the workpiece is increased. The rotary magnetron target is applied to the horizontal magnetron sputtering coating equipment, thus the coating efficiency of the workpiece can be effectively increased, and the production cycle of a whole process line is shortened, and then the production efficiency is increased.

The invention relates to a preparation method of a polypropylene composite material. The polypropylene composite material is prepared from 55-90 parts by mass of polypropylene, 3-5 parts by mass of modified sepiolite, 1-2 parts by mass of modified nano TiO2 and a processing aid, the sepiolite is subjected to surface treatment by a hydrochloric acid solution, and the preparation process comprises the following steps: soaking the sepiolite, removing scum, filtering, carrying out acid treatment, filtering, drying, firing at 500 DEG C, cooling and modifying the sepiolite; the preparation method comprises the following steps: carrying out surface treatment on nano TiO2 by using methyl methacrylate, stirring TiO2, deionized water and sodium dodecyl sulfate, heating to a certain temperature, dropwise adding a certain amount of methyl methacrylate after stirring, and after the reaction is finished, carrying out reduced pressure filtration, drying to a constant amount, and grinding into particles to obtain modified nano TiO2; the composite material is prepared by the following steps: drying polypropylene, modified sepiolite and modified nano TiO2, mixing in a mixer according to a certain proportion, extruding and granulating, and carrying out injection molding.

An alkaline accumulator with multiple flow-guiding tubes for heat exchange is composed of casing, electrolyte, multiple positive plate electrodes, multiple negative plate electrodes, and multiple diaphragms between positive and negative plate electrodes. It features that said positive plate electrodes and negative plate electrodes are alternatively staggered to form extended positive plate electrode group and extended negative one, which have the holes for installing the flow-guiding tubes in it. The active substance is coaded in the area where positive and negative plate electrodes are overlapped. Its advantages are low internal resistance, high output power, uniform temp and long service life.

The thermally grown Al2O3 film type M-Al nano composite coating consists of nano crystal M coating and nano metal Al grains dispersed in the coating, where M is Ni, Fe or Co. The Al content is 9.8-35 wt%, and M is the rest. The nano composite Ni-Al, Fe-Al or Co-Al coating is prepared through composite electroplating process to deposit metal M and Al coating on to the base material of Ni, Fe or Co, carbon steel or alloy steel. The present invention has the features of simple technological process, low cost, high and controllable compounded amount, compact coating, no need of vacuum diffusion treatment of the nano composite coating, direct thermally growth of protecting Al2O3 film, etc.