1599results about How to "Improve performance indicators" patented technology

The structure of the system includes three parts: the control part, the detection part and the drive part. The control part consists of three parts: the main controller i.e. the operation controller,the distance change control and the speed change controller. The detection part includes the wind wheel rotor, the stator of double fed generator, the variable frequency power supply of speed drop excitation and the invention power source of pulse-width modulation etc. assembled sensors. The drive part is composed of the servomotors with different functions. The sensed signals are output from thedetection part. The control signals output from the interlinkage drive module controls harmonious operation. The invention provides the features of simple structure, stable and reliable running and flexible control.

The invention relates to high-performance marine mooring chain steel and a manufacturing method thereof. The method comprises the following steps: a. tapping compositions comprise the following by weight percentage: C: 0.16 to 0.27, Mn: 0.40 to 1.45, Si: 0.15 to 0.50, Cr: 1.25 to 2.50, Ni: larger than 0 and less than 1.20, Mo: 0.20 to 0.60, Al: 0.01 to 0.06, N: 0.004 to 0.015, S: not larger than 0.005, P: not larger than 0.015, Cu: larger than 0 and less than 0.50, and the balance of Fe; b. a steel ingot or a continuous casting billet is casted after the steps of primary smelting in an electric stove or a converter, external refining and vacuum degassing; c. the charging temperature of a heating oven is not larger than 900 DEG C, the heating rate is not larger than 150 DEG C/h; when being raised to 1100 to 1300 DEG C, the temperature is kept for more than 40 minutes, cogging bloom or rolling by a finisher is carried out, and the finishing temperature is not larger than 1050 DEG C; and d. after heated at the temperature of 1000 to 1250 DEG C, the cogged ingot is hot-rolled or forged into round steel, the finishing temperature is not larger than 1050 DEG C, and after rolling, the steel is air-cooled, slow cooled or softening heat-treated at the temperature of not less than 600 DEG C. The performance of finished products achieves or exceeds the requirement of level 4.5 and level 5 of mooring chain steel.

The invention discloses a lock cylinder fixed type cross-shaped mechanical antitheft lock matched with a fingerprint lock and relates to the field of antitheft locks. By means of the characteristic that the operation manner that a key can only be inserted and pulled and unlocking can be conducted as long as a handle is rotated of the mechanical antitheft lock is right the same as the operation manner of the fingerprint lock is utilized, the scheme of matched usage of the mechanical antitheft lock and the fingerprint lock is put forwards. A cam mechanism of a special structure and double clutches running independently are mainly adopted so that fingerprint recognition unlocking, key unlocking and locking operation can be completed through the same handle, wherein the cam mechanism is mainly composed of a torque limiter, a driven ring, a cam ring and a stirring wheel in a combined manner, engagement and disengagement of the auxiliary clutch are completed through key inserting and pulling, and the main clutch and the auxiliary clutch are relatively independent and do not interfere with each other; and therefore convenience of the fingerprint lock is maintained in the whole set of lock, and meanwhile the beneficial effects that technical opening, violent opening and damage are prevented, the handle can idle, and a main lock plunger, a spring bolt and a lock body are movably connected in an external hanging manner of the mechanical antitheft lock are achieved.

The invention discloses a high-strength man-made quartz plate and a preparation method thereof. The plate comprises the following raw materials: unsaturated polyester resin, an inorganic material, a pigment, a coupling agent, a strength increasing material, a promoter and a curing agent. The preparation method includes: weighing all the raw materials according to a weight ratio, mixing uniformly, filling a mould with the material mixture, vibrating under vacuum, degassing by vacuum pressing, curing and forming at a medium temperature, and performing surface sanding processing to obtain a finished product. Beneficial effects of the man-made quartz plate and the preparation method thereof are that: the man-made quartz plate has increased plate density, increased rupture strength, increased compressive strength, increased falling-ball impact strength, reduced water adsorption rate, improved comprehensive performance indexes, and prolonged service lifetime; the application fields of finished products of the man-made quartz plate are largely increased; and the strength increasing material is added, thus largely increasing the strength of the man-made quartz plate.

This invention relates to permanent simultaneous motor control system based on NN with five free degree and with no bearing, which is characterized by the following: one two-free degree with no bearing simultaneous motor, one three-free degree alternating radium and axis direction mixed magnetic bearing form one sample body; three Clark anti-conversion, three current tracing anti-converter and one linear power amplifier, sample machine and its load work as one integration to form compound controlled subject; using static NN summer through study formula to form NN reverse for non-linear dynamic decoupling control on five free degrees bearing.

The embodiment of the invention discloses a TD (time division) frequency planning and scrambling code planning method based on an adjacent zone priority level, comprising: an adjacent cell priority level is generated through a zone adjacent factor, a zone factor and a zone direction factor based on the base station zone attribute according to the system technical scheme; and a TD main carrier frequency is distributed according to the generated adjacent zone priority level to ensure the minimality of the frequency interferences among zones; and then, a system assigns base scrambling code blocks and scrambling codes according to the adjacent zone priority level and the frequency so as to ensure the average minimization of the mutual interference of the frequency scrambling code among zones. According to the embodiment of the invention, the calculation method of the adjacent zone priority level is more reasonable, and the setting and switching process of the adjacent zone relationship is more reasonable. Furthermore, co-frequency encounter phenomena among the adjacent zones are avoided by adopting the scheme, so that the mutual correlation of the scrambling codes among the adjacent zones is minimal, and the maximal frequency resource and scrambling code resource utilization and the minimum frequency and scrambling code interferences among zones are ensured. And the network performance indexes such as call completing rate are improved, and the client perception quality is greatly improved.

The invention discloses a dynamic dispatching method on the base of pheromone in semi-conductive product line, which comprises the following steps: first, storing pheromone variation of each WIP which relates to the WIP delivery date, holding time of waiting processing equipment, pure processing time and production periodic multiplication factor; second, storing pheromone variation which relates to equipment load; then, integrating the WIP pheromone variation and relating equipment pheromone variation, generating a selective variation of each WIP; finally, elaborating them on the equipment according to the method which consists of short-term and long-term function index to improve multi-function index production or making system.

The invention relates to a fire-retardant phosphoric epoxy powder composition, which is an epoxy powder composition prepared by matching solid phosphoric epoxy resin, general solid epoxy resin, curing agent, pigment, filler, fire retardant and so on. The composition prepared does not contain halogenated and antimonic fire retardant, red phosphorus and so on, can meet the fire-retardant standard of UL94 V0, has superior electroinsulating property, and is widely applied in the electronic component packaging field. The fire-retardant phosphoric epoxy powder composition synthesizes solid phosphoric epoxy resin which is then applied to an epoxy powder system, thereby the problem that liquid phosphoric epoxy resin in the prior art can not be applied to the powder system due to the technological requirements is solved and the technical support is provided for converting the prior halogenated and antimonic fire-retardant system into non-halogenation.

The invention discloses a nano fog-dissipation multifunctional greenhouse agricultural film, and in particular relates to a three-layer co-extruded EVA (ethylene-vinyl acetate copolymer) long-life fog-dissipation environment-friendly multifunctional greenhouse film, belonging to the field of agricultural mulching films. The raw material formula of an outer layer comprises the following components in percentage by weight: 20-50% of linear low-density polyethylene (LLDPE), 20-50% of low-density polyethylene (LDPE), 10-20% of metallocene polyethylene (mPE) and 5-10% of double-prevention masterbatch; the raw material formula of a middle layer comprises the following components in percentage by weight: 30-40% of ethylene-vinyl acetate copolymer (EVA), 20-40% of linear low-density polyethylene (LLDPE), 20-40% of low-density polyethylene (LDPE) and 5-10% of three-prevention masterbatch; the raw material formula of an inner layer comprises the following components in percentage by weight: 30-40% of ethylene-vinyl acetate copolymer (EVA), 10-20% of linear low-density polyethylene (LLDPE), 20-50% of low-density polyethylene (LDPE) and 5-10% of three-prevention masterbatch; and the formulas of the outer layer, the middle layer and the inner layer are uniformly mixed respectively, master batches are prepared by using a double-head thread screw double-screw extruding machine, a three-layer film is formed through a co-extrusion die head and is extruded out to prepare the multifunctional agricultural greenhouse film. Every quality technical index of the film reaches or exceeds a national standard, and a small part of the indexes is more than 2 times better than the national standard, so that the film is excellent in antiaging performance and cannot generate fog drops, and the service life of the film reaches more than 3 years.

The discarded Chinese medicinal material residue produced from production of Chinese patent drug Mailuoning is used and producing steps are: coarse pulverizing, adding dried Chinese medicine residue to regulate water content, then adding cellulolytic bacteria to make stacked fermentation, sieving, finally adding regulator A and B according to a certain ratio to obtain a matrix. Finally, in the said matrix a certain quantity of seedling fertilizer and feishite can be added. Said invention also provides its application method and its advantages.

The invention belongs to the technical field of optical pump magnetometers and discloses an atom magnetic sensor for an optical pump magnetometer. The atom magnetic sensor comprises a first half wave plate (1), a first polarization beam splitter prism (2), a third half wave plate (5), a third polarization beam splitter prism (6), a one-quarter wave plate (7), a Helmholtz coil (16), an atom air chamber (9), a reflector (10), a prism (11) and a photoelectric detector (12). By the adoption of the atom magnetic sensor, magnetic field measurement result errors caused by optical frequency shift in the laser optical pump atom magnetometer can be eliminated, and the performance index of the laser optical pump atom magnetometer can be improved.

The invention discloses a tobacco stalk processing method, relating to a tobacco leaf processing method, in particular to a tobacco stalk processing method on a tobacco processing line. The invention comprises the steps of: vacuum moisture regaining, stalk washing in a water-tank tobacco stalk conditioning plant, stalk moistening in a channel tobacco stalk conditioning plant, stalk pressing, shredding, moisture regaining in a jetting stalk stem conditioning plant and stalk stem drying in a channel stalk stem drying machine. After being subjected to the tobacco stalk vacuum moisture regaining procedure, tobacco stalk absorbs atomizing water vapour, so that the tobacco stalk has certain temperature and moisture, which can greatly improve the performance index of the original procedure of washing stalks with water; after adding the tobacco stalk vacuum moisture regaining procedure, the moisture of the tobacco stalk can be ensured before the stalk stem is cut; impurities can be thoroughly discharged after the tobacco stalk is washed, the stalk stem cutting technology can be conveniently and safely finished, and the cut stalk stem is cleaner.

The invention discloses a sand texture type polyester/epoxy powder coating and a preparation method thereof. The sand texture type polyester/epoxy powder coating comprises the following raw materials, by weight, 350-400 parts of polyester resin (P5040), 240-280 parts of epoxy resin (E-12), 100-150 parts of extinction barium sulfate, 40-60 parts of spherical silica powder, 8-12 parts of modified polyethylene wax powder, 10-15 parts of organic coated titanium dioxide, 5-10 parts of sand texture agent (SWMBX-30), 4-6 parts of benzoin, 5-8 parts of 2-phenyl imidazoline, 4-6 parts of 2-methylimidazole, 5-10 parts of ferrite yellow, 5-10 parts of iron oxide red and 10-15 parts of carbon black. The prepared powder coating has the advantages of being high in hardness, high in intensity, high in abrasion resistance, good in heat resistance, good in ageing resistance, short in solidifying time, environment-friendly, free of pollution and the like. The solidified coating produces a texture effect of the sand texture, the sand texture is meticulous and clear, distribution is even, visual comfort is provided for people, and combination properties of the coating are good.

The invention discloses a resin concrete, which is characterized in that the concrete is made of the following materials by weight proportion: 1 to 20 weight proportions of unsaturated polyester resin, 50 to 80 weight proportions of aggregate, 3 to 15 weight proportions of powder and 0.5 to 5 weight proportions of admixture. The admixture consists of low shrinkage agent and hardener. By reducing content of the resin of the resin concrete and adding appropriate admixture, novel high-efficiency concrete with high strength and formed product thereof are obtained. The formed product is characterized by low cost, high strength, non-crack and good physical property. More particularly, the invention adopts MC-869 polyester resin as raw material, which reduces consumption and dramatically improves performance index compared with similar product.

The invention discloses an outfield precision testing method for a high-precision star sensor. Accuracy in calculation of a star pattern posture of the star sensor and frequency domain stripping of short-period error terms of the posture are realized by utilizing a procession correction formula, an earth rotation model, an atmosphere correction model and a power spectral density formula, and the posture measuring error of the star sensor can be rapidly and effectively analyzed and evaluated. According to the method, the hardware resource is not occupied, the method is realized by utilizing software and does not need the ground intervention. According to the method, by combining the posture identification principle of the star sensor and adopting a data smoothing method, the posture truth value of each frame star pattern moment is calculated, so that a foundation is established for the subsequent analysis on the posture measuring error; by adopting the method for combining the time domain and the frequency domain, the short-period error term is decomposed into an airspace low-frequency error, a high-frequency error and a time-domain error by virtue of the power spectral density analysis, so that reasonable data support is provided for further evaluation of the precision indexes of the star sensor, and the index performance of the star sensor can be improved.

The invention discloses a chlorinated polyvinyl chloride tube and a preparation process thereof. The tube is prepared from chlorinated polyvinyl chloride resin, a stabilizer, a toughening agent, a filler, a lubricant, a light screener and an ultraviolet absorbent serving as raw materials, wherein the toughening agent is one or more of MBS (Methyl methacrylate-Butadiene-Styrene copolymer), anti-impact ACR (Acrylic resin) and CPE (Chlorinated Polyethylene); and the tube is prepared through the following steps of: uniformly mixing all the raw materials in a high-speed mixer, mixing and cooling in a cold mixer, extruding through a double-screw extruder, cooling and forming. Compared with the prior art, the tube has a novel toughening and reinforcing system, i.e., various organic toughening agents are used in coordination with one another, and an organic composite toughening agent is used in coordination with inorganic rigid particles for toughening and reinforcing; and the tube has superior performance and higher anti-impact strength, tensile yield strength, vicat softening temperature and weather resistance, has a wider application range, is safer, is suitable for being buried underground and laid in a concealed way and can also be stored for a long time and used outdoors.

The invention relates to a double-hard magnetic main phase mixed rare-earth permanent magnet and a preparation method thereof. The permanent magnet comprises double hard magnetic main phases and a rear-earth-rich phase, wherein the double hard magnetic main phases are MM<2>Fe<14>B and (PrNd)<2>Fe<14>B respectively; the permanent magnet is prepared from the following chemical component in percentage by mass: [MM<x1>(PrNd)<1-x1>]<x>Fe<100-x-y-z>B<y>TM<z>; x is smaller than or equal to 31 and greater than or equal to 27; x1 is smaller than or equal to 1 and greater than or equal to 0; y is smaller than or equal to 1 and greater than or equal to 0.9; z is smaller than or equal to 1.5 and greater than 0; TM is a composition of more of the elements Al, Cu, Co, Nb, Ga, Tb and Zr; and MM is a mixed rare-earth alloy which is directly separated from raw ore and contains La, Ce, Pr and Nd. The anisotropic sintered mixed rare-earth permanent magnet with high cost performance within a range of 10-48MGOe can be prepared by adjusting the content of PrNd. A basic rare-earth raw material used by the permanent magnet is cheap mixed rare earth, so that a separation and purification technology for the rare earth can be reduced, efficient utilization of lanthanum-cerium rare earth is achieved and the double-hard magnetic main phase mixed rare-earth permanent magnet meets the requirements of low carbon economy on green production technology innovation of a rare-earth permanent magnet product.

The invention relates to a micro-nano biomimetic vector acoustic sensor based on a micro-nano MEMS/NEMS processing technology and the bionics principle, in particular to an encapsulation structure of the micro-naro biomimetic vector acoustic sensor. By the encapsulation structure, the performance indexes of the vector acoustic sensor are further improved and perfected. The encapsulation structure comprises a supporting body used for fixing the micro-nano biomimetic vector acoustic sensor, an encapsulation shell which is sheathed the micro-nano biomimetric vector acoustic sensor and is fixed with the supporting body by sealing; the encapsulation shell is filled full of insulation liquid with the same or similar density as the water and is a transaudient rubber cap manufactured by a high-frequency, low-attenuation and low seepage polyurethane potting material by an acoustic potting technique. Designed according to the bionics principle and with reasonable structure, while protecting the micro-structure of the acoustic sensor, the encapsulation structure does not affect or hinder the detection to sound signals by the micro-structure of the acoustic sensor, thus realizing the purpose of further improving and perfecting the performance indexes of the vector acoustic sensor.

The invention relates to a preparation method of waste rubber modified emulsified asphalt, which belongs to the field of modified asphalt. The method comprises the following steps of: mixing waste rubber with an activating agent in supercritical CO2, preparing into rubber with high sol content with a high-temperature and high-pressure method, and shearing in a high-speed internal mixer to obtain fluid rubber; and performing short-time initial mixing and continuous high-speed shearing mixing on substrate asphalt and the fluid rubber to obtain modified asphalt, and shearing and emulsifying under the action of a cationic emulsifier system into waste rubber modified emulsified asphalt. The waste rubber modified emulsified asphalt prepared with the method is stored stably, and the high and low temperature properties of the modified asphalt are improved due to the addition of rubber. Meanwhile, waste rubber is used for modifying emulsified asphalt, so that environmental protection is facilitated, and cost is reduced; and meanwhile, a process is simple, and industrial production is easy.

The invention provides a method and a device for optimizing dynamic transmission performance in a wavelength switched optical network. The method comprises the following steps of: making the optical signal-to-noise ratio cost of a dispersion-optimized optical path and the accumulative nonlinear phase shift have a one-to-one correspondence relationship by carrying out pre-dispersion compensation and post-dispersion compensation on source and destination nodes of an optical path; then, obtaining the optical signal-to-noise ratio cost of the optical path, using the power regulating quantity of a power-regulating point as a variable, by using the correspondence relationship, further setting a target function according to the optical signal-to-noise ratio cost and the optical signal-to-noise ratio of the optical path, and optimizing according to a predetermined optimization target and constraint conditions to obtain a node needing power regulation and the power regulating quantity of the same. According to the invention, the transmission performance of the optical path can be improved, and the blockage of physical layers, caused by the substandard physical transmission performance, is avoided.