16results about How to "Generate uniform" patented technology

The invention relates to a mobile robot path planning method based on an improved eagle optimization algorithm, and belongs to the technical field of robot path planning, and the method comprises the following steps: S1, constructing a two-dimensional grid map according to map information, and marking a starting point, a target point and an obstacle; s2, constructing a multi-objective function, and evaluating the advantages and disadvantages of the path according to the path length and the path smoothness; s3, using uniformly distributed Logistic chaotic mapping and combining with an LOS sight line detection algorithm to initialize a population; s4, improving an egret optimization algorithm by adopting a self-adaptive nonlinear inertia factor and a doliolaria group algorithm, selecting a corresponding global search mode and a local search mode according to different iterations, and updating the position and the target function value of an egret individual; and S5, outputting the optimal path.

The invention discloses an air conditioner and a control method and device thereof, a storage medium and a computer program product. The method comprises the steps that under the condition that the air conditioner operates in a heating mode, the frequency of a compressor, the rotating direction of an outdoor fan, the rotating speed of the outdoor fan, the pipe temperature of an outdoor heat exchanger and the outdoor environment humidity of the air conditioner are obtained; according to the frequency of the compressor, the rotating direction of the outdoor fan, the rotating speed of the outdoor fan, the outdoor environment humidity of the air conditioner and the pipe temperature of the outdoor heat exchanger, frost layer unevenness parameters of the outdoor heat exchanger are determined; according to the outdoor environment humidity of the air conditioner, the frequency of the compressor and the pipe temperature of the outdoor heat exchanger, frost layer thickness parameters of the outdoor heat exchanger are determined; and according to the frost layer non-uniformity parameter of the outdoor heat exchanger and the frost layer thickness parameter of the outdoor heat exchanger, a preset defrosting control strategy is executed. According to the scheme, the frost layer of the outdoor heat exchanger is uniform in the generation process, so that the defrosting time is delayed, and the heating capacity is guaranteed.

This invention discloses a wide-interlayer-spacing molybdenum disulfide catalyst, its preparation method, and its application, belonging to the field of water electrolysis for hydrogen production energy conversion technology. The preparation method includes the following steps: preparing a molybdenum disulfide precursor solution using a molybdenum source and a sulfur source; then subjecting the molybdenum disulfide precursor solution to a hydrothermal reaction with a carbon-containing interlayer-spacing regulator; and obtaining the wide-interlayer-spacing molybdenum disulfide catalyst after centrifugation and washing. The carbon-containing interlayer-spacing regulator is used to insert into the interlayer of molybdenum disulfide during the hydrothermal reaction, increasing the interlayer spacing of the (002) crystal planes of the obtained molybdenum disulfide catalyst. The wide-interlayer-spacing molybdenum disulfide catalyst of this invention facilitates electrolyte penetration and hydrogen bubble release, effectively avoids active site blockage, enhances the intrinsic conductivity of the catalyst, accelerates internal charge transport, increases active sites for hydrogen evolution reaction, and improves the intrinsic hydrogen evolution catalytic activity of the catalyst.

The present invention discloses an equipment for treating the surface anticorrosion of accessories and a treatment process thereof, comprising a box and a support frame, wherein the lower part of the box is fixedly connected to the outer wall of the top of one side of the support frame. By inserting a limiting plate into the inner part of a limiting groove, when the mounting cylinder moves, the second mounting plate rotates accordingly, and then the rotation of the mounting plate drives the stirring shell to rotate, and then the rotation of the stirring plate drives the chemical solution inside the box, so that the chemical solution forms a vortex and flows, and the chemical solution inside the box is mixed more evenly, which correspondingly increases the effect of anticorrosion on the surface of metal accessories, and then the movement of the chemical solution drives the metal accessories inside the box to move, thereby ensuring that the surface of the metal accessories is fully in contact with the chemical solution, avoiding uneven anticorrosion coating on the surface of the metal accessories, and correspondingly promoting the progress of chemical reactions and uniform generation of coatings.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a process for preparing nano calcium carbonate by a wet method. A process for preparing nano calcium carbonate by a wet method comprises the following steps: polymerizing N-isopropylacrylamide and vinyl imidazole to generate a copolymer, then adding the copolymer into a calcium hydroxide suspension to form a crystal nucleus, dispersing the crystal nucleus, introducing carbon dioxide gas to carry out carbonization reaction, introducing nitrogen after the reaction is completed, and carrying out vacuum drying to obtain the nano calcium carbonate. Recovering the copolymer to be neutral and desorbing from the crystal surface; and finally, carrying out centrifugal separation, collecting a solid product, and carrying out vacuum drying to obtain the nano calcium carbonate. The nano calcium carbonate prepared by the process is uniform in particle size and good in dispersity. No toxic or harmful auxiliary agent needs to be introduced in the nano calcium carbonate production process, and the production purity is high.

The application discloses a low-density corrosion-resistant thin-gauge high-aluminum medium-manganese steel, and chemical components and mass percentages of the low-density corrosion-resistant thin-gauge high-aluminum medium-manganese steel include the following: C: 0.1-0.4%, Mn: 3-12%, Al: 2-5%, and the balance of Fe and inevitable impurities. The application has the advantages that a stirring friction processing method is used to introduce a microstructure feature of a phase and a grain size in a matrix in a gradient distribution into the medium-manganese steel, so that the surface modification purpose is achieved, and then the corrosion resistance is effectively improved.

The invention relates to the technical field of lithium ion battery material production, in particular to a control method of a lithium ion battery ternary positive electrode material precursor production system, which comprises the following steps: S1, modeling fluid behaviors in a reactor by using simulation software; s2, the feeding rate of a feeding unit is adjusted in real time, and the concentration of ions in all the partitions is kept consistent; s3, dynamically adjusting the stirring speed and mode in the reactor; s4, adjusting the feeding rate in the step S2 and the stirring parameters in the step S3; s5, performing crystal nucleus homogenization induction; s6, precursor material particles are separated out step by step; and S7, carrying out drying treatment on the separated precursor material particles. According to the preparation method, through multi-dimensional dynamic regulation and control and accurate distribution control, the ion uniformity and the structural stability of the ternary positive electrode material precursor are remarkably improved, and a high-quality material basis is provided for a high-performance lithium ion battery.

The utility model discloses a fruit and vegetable sectional type fermentation device, which relates to the technical field of fruit and vegetable processing, and comprises an upper cabin body, the top of the upper cabin body is fixedly communicated with a feed hopper, a main material turning assembly is arranged in the upper cabin body, a group of side material turning assemblies is arranged in the upper cabin body, and a lower cabin body is fixedly arranged at the bottom of the upper cabin body. A feeding port is formed in the top of the upper cabin body, a scraping assembly is arranged in the lower cabin body, a sucking pump is fixedly installed on the outer surface of the lower cabin body, and one end of the sucking pump fixedly communicates with an exhaust pipe. The main material turning assembly, the side material turning assembly, the suction pump, the suction pipe and the exhaust pipe are matched for use, so that a sectional treatment mode of aerobic fermentation, anaerobic fermentation and dynamic conveying in the same cabin is realized, and the defect that a traditional single-screw device cannot meet environmental requirements at different stages is overcome; further, the microbial activity can be improved, the fermentation period is shortened, uniform generation of flavor substances is ensured, and the consistency of fermentation products is improved.

The application relates to the technical field of batteries, in particular to a positive electrode material precursor, a positive electrode material, a positive electrode sheet, a battery and an electric device, the specific surface area of the positive electrode material precursor is a m 2 / g; the Dvmin of the positive electrode material precursor is b mu m; the reciprocal of the aspect ratio of the positive electrode material precursor is c; the positive electrode material precursor satisfies: 5<=a / b x c<=500; the positive electrode material precursor comprises at least one of a nickel-cobalt-manganese ternary material precursor, a nickel-cobalt-aluminum ternary material precursor and a nickel-cobalt-manganese-aluminum quaternary material precursor. Compared with the prior art, the related parameters of the positive electrode material precursor are comprehensively regulated, the positive electrode material precursor has high-dispersed single-crystal structure characteristics, excellent lithium extraction uniformity requirements are met, and on the basis of guaranteeing that the battery has good cycle stability, the battery electrical performance is improved.

The invention relates to the technical field of aluminum-based composite material preparation, in particular to a ceramic reinforced aluminum-based workpiece and a preparation method. The ceramic reinforced aluminum-based workpiece is prepared by the method. The method comprises the steps that a forming die is assembled and filled with aluminum-based composite powder; sintering the forming die filled with the aluminum-based composite powder in an inert atmosphere to obtain a sintered green body; performing die forging treatment on the sintered green body to obtain a prefabricated green body; and after the prefabricated blank is machined to the size of a finished product, the prefabricated blank is sequentially subjected to solution treatment and aging treatment, and the ceramic reinforced aluminum-based workpiece is obtained. By means of the method, the ceramic reinforced aluminum-based workpiece with the large length-diameter ratio can be prepared, and the problems that cracks are generated when a formed blank is not separated from the female die, and layering and fragmentation are generated in the demolding process are solved.

This invention discloses a CO2-cured concrete and its preparation method, belonging to the field of building materials technology. The concrete comprises the following raw materials: cement 350-380 kg / m³. 3 Coarse aggregate 1000-1100 kg / m³ 3 Water 100-110 kg / m³ 3 Fine aggregate 850-880 kg / m³ 3 Water-reducing agent 4-6 kg / m³ 3 The method involves incorporating a specially formulated CO2 adsorbent as a functional component into concrete raw materials. This adsorbent is pre-loaded with CO2. During the concrete forming and curing stage, the CO2 inside the adsorbent is slowly released, promoting carbonation from within. This synergistic internal and external curing mechanism overcomes the shortcomings of traditional single external carbonation, which easily leads to surface densification and hinders internal reactions, achieving uniform action and deep sequestration of CO2 within the concrete.

The application belongs to the technical field of superconductivity, and relates to a densified Nb3Sn superconducting wire and a preparation method thereof. The composite wire blank comprises a center rod, subunits arranged in a multi-layer annular manner outside the center rod, and an oxygen-free copper sheath wrapped outside the subunits; the subunits comprise, from inside to outside, an Nb-Ta alloy rod, a Ta tube and an oxygen-free copper tube, and a Sn source layer between the Nb-Ta alloy rod and the Ta tube. The composite wire blank is subjected to rotary swaging and multi-pass cold drawing, 2 times of on-line electric heating and ultrasonic auxiliary treatment, and rolling to obtain a multi-core wire; then, vacuum heat treatment is carried out, and the Nb3Sn superconducting wire is obtained after natural cooling. Through on-line electric heating and ultrasonic auxiliary treatment, the application promotes pre-reaction of the Sn source layer, eliminates microporous looseness, and releases processing stress, so that the prepared wire has a high critical current density.

The invention discloses a core-shell structure mineralizer modification-based photocuring 3D printing aluminum-based ceramic core and a preparation method thereof. The aluminum-based ceramic core comprises the following substances in percentage by weight: 65-75% of aluminum-based ceramic powder, 5-15% of a core-shell structure mineralizer component and 15-25% of a photosensitive resin component. The preparation method comprises the following steps: preparing aluminum-based ceramic core slurry, and vacuumizing the aluminum-based ceramic core slurry; injecting the aluminum-based ceramic core slurry into a trough of 3D printing equipment, and printing an aluminum-based ceramic core blank; the aluminum-based ceramic core green body is subjected to ultrasonic cleaning and drying treatment; and the aluminum-based ceramic core blank is subjected to degreasing treatment and sintering treatment, and the photocuring 3D printing aluminum-based ceramic core based on core-shell structure mineralizer modification is prepared. According to the method, the sintering temperature of the 3D printing aluminum-based ceramic core blank can be effectively adjusted, generation of interlayer cracks in the degreasing and sintering process is reduced, and the aluminum-based ceramic core with excellent comprehensive performance is obtained.

The utility model provides a kind of mixed phase ice crystal particle ground generation and icing experimental device, water droplet particle group is generated by water nozzle, ice crystal particle group is generated by ice crystal particle generation device, controllable proportion mixing is ice-water mixed phase, namely mixed phase icing experiment can be realized.The experimental device includes air duct system, water droplet atomization generation system, ice crystal particle generation system, impact surface system and measurement system;Air duct system includes axial flow fan, air duct and experimental cavity;Impact surface system includes impact surface assembly, water droplet atomization generation system and ice crystal particle generation system are respectively used to provide water droplet and ice crystal, axial flow fan provides high-speed airflow, water droplet and ice crystal are transported via air duct to high-speed impact impact surface assembly, and the impact of mixed phase is realized icing experiment;Measurement system is used to measure wind speed, temperature, humidity in air duct, and measure ice layer thickness, temperature to impact surface assembly.

The embodiment of the invention discloses an aerosol generating substrate section and an aerosol generating product, the aerosol generating substrate section comprises a flaky substrate, the aerosol generating substrate section is of a winding structure formed by winding the flaky substrate, and the flaky substrate can be heated to generate aerosol. The flaky substrate comprises a substrate layer and substrate strips, and the substrate strips are arranged on at least one side of the substrate layer in the thickness direction of the flaky substrate. According to the aerosol generating substrate section, a stable air channel can be formed by adjusting the size of the substrate strips, and therefore the stability of suction resistance is improved; and after the substrate strips are laid on the substrate layer, displacement caused by factors such as vibration in the transportation, storage or use process can be reduced, so that the suction resistance stability can be further improved. In addition, the matrix strip is a homogeneous system, so that aerosol can be continuously and uniformly generated.

The invention discloses a positive active material for a power battery and a production process thereof, the positive active material for the power battery comprises major materials and auxiliary additives, the major materials comprise 80-85% of lead powder; 4%-9% of sulfuric acid; 7.5%-11.5% of pure water; the auxiliary additive comprises the following components in percentage by weight: 0.1%-0.20% of graphite; 0.08%-0.12% of short fibers; 0.08% to 0.1% of antimony trioxide; 0.09% to 0.14% of stannous mono-sulphate; 0.3%-0.7% of glass fiber; and 0.2%-0.5% of lithium hydroxide. Medium-long glass fibers are arranged to construct a macroscopic framework to provide millimeter-level support, the overall deformation resistance of the lead plaster is effectively improved, microcosmic pores of the lead plaster are accurately filled with superfine short fibers, microcosmic bonding among particles is effectively enhanced, the superfine short fibers and the microcosmic pores are combined to form a continuous'micro-medium-macro 'three-level reinforced network, and the microcosmic bonding is effectively enhanced. The contradiction that traditional fibers are difficult to disperse if being long and weak in support if being short is solved, so that the bonding force between the adjusted lead paste and the grid is greatly improved, the falling rate of active substances is reduced, and the lead paste is more suitable for being used in a high-frequency vibration scene.