107results about How to "Meet performance indicators" patented technology

The invention belongs to the field of magnesium alloy automobile hub manufacture and particularly relates to a magnesium alloy automobile hub casting spinning compound molding method. A magnesium alloy automobile hub spinning wheel blank is manufactured through gravity casting or low-pressure casting process, after a casting spinning blank undergoes surface machining and homogenization processing, an automobile hub blank is manufactured through hot spinning process, and the magnesium alloy automobile hub is manufactured through heat treatment, precise machining and surface coating. The magnesium alloy automobile hub casting spinning compound molding method is used for manufacturing the magnesium alloy automobile hub, the automobile hub with high mechanical performance and good surface quality is obtained, and requirements of the automobile field for automobile hub performance indexes can be fully met. By means of the magnesium alloy automobile hub casting spinning compound molding method, a problem that the strength and toughness of the magnesium alloy automobile hub are poor can be solved, and production cost of the magnesium alloy automobile hub can be obviously reduced.

The invention relates to a high-copper alloy strip for a heat sink of an automobile. The high-copper alloy strip comprises the following components in percentage by weight: more than or equal to 99.6% of copper, 0.05-0.20% of silver, 0.01-0.02% of stibium, 0.01-0.02% of chromium, 0.005-0.01% of phosphorus, 0.01-0.05% of rare earth and less than 0.0005% of oxygen. A production process of the high-copper alloy strip comprises the following steps of: (1) upward continuous casting; (2) continuous extruding; (3) cold rolling; (4) intermediate annealing; (5) finish rolling; (6) washing and passivating; (7) slitting; and (8) packaging and warehousing. The high-copper alloy strip provided by the invention has the technical advantages that composition of a high-copper alloy strip for an ultrathin water tank strip of an automobile is reasonably optimized and the problems that comprehensive performances such as electrical conductivity, anti-softening temperature and tensile strength can not meet operating requirements as a strengthened red copper alloy is adopted for preparing the ultrathin water tank belt in the prior art are solved.

The invention provides a high-precision control method of motor position servo system; the implementation of the system comprises the following steps: step 1, establishing a motor position servo system model; step 2, designing a high-precision motor controller based on limited time interference estimation; and step 3, adjusting parameters of the high-precision motor control law based on limited time interference estimation, so as to make the system satisfy the control performance index. The provided high-precision control method of motor position servo system establishes the motor position servo system model aiming at the features of the motor position servo system, and designs the high-precision motor controller based on the limited time interference estimation, so as to estimate and compensate unmodeled interference of the system at real time; the total disturbance of the system can be well estimated by adjusting the parameters of the control law, thereby being effectively solving the uncertain nonlinear problem of the motor servo system; the integral robust item ensures the overall stability of the system.

The invention relates to a wheel speed simulating method and system used in an automobile dynamics control simulation system. The method comprises the following steps that (1) a wheel speed simulating system is set; (2) vehicle type selection and working condition setting are carried out, and the independent wheel speed of four wheels is sent to a whole vehicle simulation CAN bus; (3) a communication module receives a wheel speed data signal, the wheel speed data signal is transmitted to a square wave generating module, the square wave generating module generates PWM square wave signals, and the PWM square wave signals are sent to a gear ring motor driver; (4) the gear ring motor driver drives a gear ring motor; (5) a 15-bit absolute value encoder feeds back the wheel speed information of the gear ring motor to the gear ring motor driver; (6) the step (7) is executed if the preset wheel speed is achieved, and otherwise the step (5) is executed; (7) the wheel speed of a gear ring is measured, the step (8) is executed if the preset wheel speed is achieved, and otherwise a diagnosis module sends a diagnosis message, and the step (3) is executed after secondary feedback control is achieved;; (8) a Hall wheel speed sensor sends the wheel speed signal to a whole control unit (ECU).

The invention provides a fixed wing type hybrid power motorplane applied to the technical field of engine products. A propeller (3) is installed on a fuselage (1) of the fixed wing type hybrid power motorplane and is connected with a driving motor (4), and the driving motor (4) is connected with a power battery (5) and further connected with a driving motor control component (6) capable of controlling the driving motor (4). An engine (7) is further arranged in the fuselage (1) and is connected with a generator (8), the generator (8) is connected with the power battery (5) and connected with the driving motor control component (6) at the same time, and the engine (7) is connected with an engine control component (9) capable of controlling the engine (7). According to fixed wing type hybrid power motorplane, electric energy and fuel oil can be alternately used, various plane performance indexes can be effectively met, energy consumption can be reduced, flying cost can be reduced, and environmental pollution can be relieved.

The composite compound for oil-film bearing oil comprises following constituents: 0.01-1.0% any one or mixture of condenses of amine and epoxide, ethylene oxide-propane block polyether, oil-solubility polyether; 0.01-1.8% any one or mixture of thiadiazoles polysulfide, benzenetriazole-aldehyde-amine condenses, and benzenetriazole fatty acidic ammonium salt; 0.01-1.5% any one or mixture of alkyl-naphthalene sulfonate, benzotriazoles, and alkylphosphoricimidazole salt; 0.01-1.0% any one or mixture of vulcanized cotton seed oil, vulcanized alkene cotton seed oil, fatty acid ester, phosphonic ester, and molybdenum phosphate sulfate; 0.05-2.5% any one or mixture of vulcanized fatty acid ester, vulcanized vegetable oil, vulcanized isobutene, polysulfide, and phosphite ester; and basic oil.

This invention relates to thermal plastic elastomer (TPE) alloy materials used to manufacture mobile airbag cover, which is characterized by using SEBS I and SEBS II, polyolefin elastomer (POE), polypropylene (PP) rubber filling oil, high and low temperature modifier, antioxidants and other additives as the raw materials. The preparation method includes: mixing SEBS I, SEBS II, and rubber filling oil with a high-speed machine at low-speed to obtain the oil-filled SEBS, adding POE I, POE II, polypropylene, antioxidants, and other additives in the high-speed machine and mixing at high speed, adding oil-filled SEBS and mixing at high-speed, extruding, and granulating. The advantages of this invention are as follows: brittle transition temperature is below minus 40degreeC, materials are not softening at 80degreeC, the material has good heat-resistance (100degreeC, seven days aging experiments, properties dropped < 50%) and high-outdoor (UV) properties, and the material can be processed easily and color directly without paint.

The invention relates to an intelligent power distribution big data application system which comprises a data acquisition module, a data integration cleaning module, a public service module, a data analysis application module and an application display module. The data acquisition module is used for providing a standardized data interface and performing standardized access of multi-source and heterogeneous data sources. The data integration cleaning module is used for combining, associating, de-weighting and transposing data accessed to the data acquisition module in lines. The public service module uses the data processed by the data integration cleaning module. The data analysis application module builds an analysis algorithm library, analyzes power utilization behaviors of a user, builds an application model and an algorithm library and builds a power-saving application, a power utilization forecasting application, a power grid optimization application and a peak-alternation regulation application. The application display module displays data of results of the data analysis application module. Compared with the prior art, the system has the advantages that the data are cleaned, migrated on a distributed platform and integrated in a standardized manner, a user behavior analysis and power utilization forecasting application module is developed, intelligent power distribution and utilization level is improved and the like.

The invention discloses a filtering tip material made of porous foam for cigarettes and a preparation method thereof. The filtering tip material comprises the following components in parts by weight: 70-88 parts of cellulose acetate sheet, 1-10 parts of polylactic acid and 6-25 parts of plasticizing agent. The cellulose acetate sheet can be directly treated by a mode of foaming, melting and extruding the supercritical fluid to obtain a fixed-shape and fixed-diameter filtering rod made of foam for cigarettes. Compared with the common filtering tip, the performance for adsorbing harmful substances is very close, even slightly higher than that of the common cigarette filtering tip, and can meet the performance index of the cigarette filtering tip completely. The filtering tip material disclosed by the invention has the advantages that the technological process is simple, the procedure becomes shorter, the used supercritical fluid has no any pollution to the environment and as an entirely-new form of the filtering rod, the application prospect is wide.

The invention provides medium manganese steel with the high product of strength and elongation and a preparation method thereof, and belongs to the field of automobile steel. The medium manganese steel comprises the following chemical components including, by weight, 0.1%-0.3% of C, 4%-12% of Mn and the balance Fe. The preparation method of the medium manganese steel comprises the following stepsof taking the chemical components of the medium manganese steel according to the weight percentage to smelt molten steel, casting the molten steel to form a cast ingot, forging the cast ingot into a plate blank, conducting air cooling to room temperature, and cutting to obtain a plate; carrying out multi-pass warm rolling treatment on the plate to obtain a warm rolled plate, wherein critical zoneannealing treatment is carried out between every two adjacent passes; and enabling the warm rolled plate to be annealed and subjected to heat preservation for 20-40 min at the temperature of 780-810 DEG C in a critical zone, and conducting air cooling to the room temperature. According to the preparation method, an ultra-fine grain medium manganese steel structure with a coarse grain austenite structure and a fine grain austenite structure is prepared through a circulating warm rolling and critical annealing process, so that the material obtains the ultra-high product of strength and elongation, and the strength and toughness of the automobile steel are improved.

The invention relates to a disintegrating transportation method of a transformer, which is applied to a high-capacity transformer transported in a disintegrating manner. The disintegrating transportation method comprises the following steps of: splitting a disintegrated transformer according to the structure of the transformer, so that the dimension and the weight of every split part can meet the requirement of transportation; respectively fixing every split part in a respective transporting box; splitting the disintegrated transformer: disintegrating a main body and other parts, wherein every core pillar of the main body is disintegrated to be two semicircles to form a frame-type disintegrating structure shape of 'side yoke-core pillar', 'core pillar-core pillar' and 'core pillar-side yoke'; and manufacture a plurality of independent transporting boxes for transportation and calculating the weight of every transporting box after loading. The disintegrating transportation method of the transformer, provided in the invention, can transport the transform in the disintegrating manner and reduce the weight of single transported part, so that the difficulty of remote transportation of the high-capacity transformer is effectively solved.

The present invention relates to an on-line continuous softening annealing method of medium-high carbon steel wire by utilizing high-energy electric pulse. Said method includes the following steps: utilizing decoiling equipment and winding-up equipment to drive steel wine and make it be moved towards the winding-up equipment at a certain speed; setting a high-energy pulse power supply, said high-energy pulse power supply can continuously output high-energy electric pulse and utilizing a pair of electrodes to apply the high-energy electric pulse to the moving steel wire so as to make the steel wire undergo the process of continuously softening annealing treatment.

The invention discloses an emulsion for seal adhesive at a normal temperature and a preparation method and an application thereof. The emulsion is composed of styrene or methyl methacrylate, butyl acrylate, methyl acrylate, adhesive force acceleration monomer, tackifying resin (specific gravity in the gross mass of all monomers of the system), emulsifier, initiator, pH value modifier, tert-butyl hydroperoxide, deionized water and buffer. Firstly, the tackifying resin is fully dissolved in the monomer, and the monomer dissolved with the tackifying resin is pre-emulsified; other components are preformed with dripping preparation by continuous dripping technology to obtain emulsion. The emulsion can be respectively prepared into two systems of styrene-acrylic emulsion and pure acrylic acid emulsion, and the synthetic emulsion has higher base material adhering property and low initial adhesive, and not only can ensure glue solution compounded by the emulsion has high stripping strength, but also can be stored at different environment temperatures without conglutination, so that the invention greatly satisfies each property index of a cold sealing adhesive system.

The invention relates to a method for preparing mixed ester of diethyl carbonate and methyl ethyl carbonate. Raw materials consist of methyl carbonate and ethanol; a catalyst consists of sodium methoxide-methanol solvent with 20 percent of the sodium methoxide in mass percentage; ethanol is equally divided into two parts according to the mass, wherein one part of the ethanol is added to a reaction rectifying tower from the tower top after the part of the ethanol is mixed with the methyl carbonate and the sodium methoxide-methanol solvent, while the other part of the ethanol and solid magnesia are directly added to the reaction rectifying tower from the tower bottom. The mol ratio of the methyl carbonate to the ethanol is between 1 to 1.2 and 1 to 1.6; the addition amount of the sodium methoxide-methanol solvent is 1.8 to 2.3 percent of total mass of the raw materials of the methyl carbonate and the ethanol; and the addition amount of the solid magnesia is 0.1 to 2.0 percent of total mass of the raw materials of the methyl carbonate and the ethanol. The method produces a mixed ester product of the diethyl carbonate and the methyl ethyl carbonate in certain proportion by controlling the mixture ratio of raw material solution, the adding mode of the ethanol and the catalyst, and temperature control of the tower bottom and other conditions.

The invention discloses a surface sizing agent which is soap-free emulsion of polymers with the following general formula I: (general formula I) wherein, R is selected from a saturated fatty alcohol group with carbon numbers of 1-18; X is selected from any one in Na<+>, K<+>, NH4<+>, etc; n is 10-1000. The sizing agent is a novel synthetic polymer surface sizing agent for paper, so surface sizing capability of paper can be greatly improved, binding fastness of paper and ink can be improved, surface strength of paper can be improved, etc.; besides, the invention also has the advantages that: few crust is provided during using process, cleaning is convenient, folding resistance of finished product is increased, wet strength is high, etc. The invention also discloses a preparation method of the sizing agent.

The invention discloses a graphene-polyaniline composite heavy-duty anti-corrosion coating and a preparation method thereof. The heavy-duty anti-corrosion coating comprises a graphene-polyaniline composite material, cured epoxy resin and zinc powder, wherein the mass fraction of the graphene-polyaniline composite material is 0.3-0.8% of the mass of the cured epoxy resin. The preparation method ofthe heavy-duty anti-corrosion coating is simple, and industrial production can be achieved easily; the electrochemical impedance value of the prepared graphene-polyaniline composite heavy-duty anti-corrosion coating reaches 105 omega, so that required performance indexes required in a severely corrosive environment of the ocean are met.

The invention relates to a baking-free antique black brick and a preparation method thereof. The baking-free antique black brick comprises a basic layer and a surface layer, wherein the basic layer iscomprises clay residues, recycled aggregates and cement; the surface layer comprises white portland cement, slag powder, recycled fine aggregates, black iron oxide and green iron oxide. The clay residues are adopted to serve as one of the production raw materials of the baking-free antique black brick, the utilization rate and the additional value of the clay residues are improved, and the utilization of building waste resources is improved; moreover, the baking-free antique black brick prepared from the method can meet various performance indexes, and is suitable for masonry engineering anddecoration engineering; the production process is simple, the disposal efficiency is high, the treatment capacity is high, the field application effect is good, and the baking-free antique black brickhas good economic benefits and social benefits.

The invention discloses a track generation method of a mobile operation robot based on second-order cone programming. According to the method, a mobile object-grabbing programming process of a mobileoperation robot is decomposed into a path programming process and a process of programming an appropriate track on the basis of the path programming process. The method comprises the following steps:firstly, programming an operation path of a mobile operation robot by using an existing RRT-Connect method; secondly, deducing a kinetic equation of the whole mobile operation robot by utilizing a Jacobian matrix of the whole mobile operation robot and a Lagrange equation; thirdly, converting multi-dimensional track programming of the mobile operation robot into a one-dimensional pseudo track programming problem, and converting the problem into a standard form of second-order cone programming; and finally, completing programming by utilizing a Sedumi second-order cone programming package of matlab. According to the method provided by the invention, the track with the shortest time under the dynamic constraint or the track with the shortest time and the minimum energy consumption can be provided for a given path in real time.

The invention belongs to the technical field of hypersonic aircraft design, and particularly relates to a trajectory optimization method suitable for a combined power hypersonic aircraft. The method comprises the following steps: S1, constructing a control-oriented mathematical model of the combined power hypersonic aircraft, wherein the control-oriented mathematical model comprises mathematical models of lift coefficients, resistance coefficients, thrust and specific impulse under independent work and combined work of all power assemblies; S2, constructing a kinetic model based on four statevariables of speed, height, track angle and mass of two control variables of attack angle and rocket flow opening degree; S3, determining constraint conditions during climbing of the combined power hypersonic aircraft, and selecting a set optimization target; and S4, solving an optimal climbing trajectory based on a Gauss pseudo-spectral method according to the optimization target. The trajectoryoptimization method based on the self-adaptive Gauss pseudo-spectral method is adopted, so the problems that a traditional trajectory optimization method is low in solving precision and low in speed are solved.

The invention discloses a design method for a diffusing section of a narrow-slit spray pipe of a lateral-force engine. According to the design method for the diffusing section of the narrow-slit spray pipe of the lateral-force engine provided by the invention, transition from a circular inlet to a rectangular outlet with a large length-width ratio is realized through rectangular smoothing.

The invention relates to a global position system (GPS) receiver technology, in particular to a global position system receiver with high sensitivity for the location and navigation, which is applied in a high sensitivity navigation receiver in an interior environment, and an indoor and outdoor seamless switching method. The receiver is a partial structure of an assistant satellite navigation location system (AGNSS); the assistant satellite navigation location system (AGNSS) comprises at least a constellation, the antenna, an emitting frequency circuit, a location server and a reference receiver etc; the components are combined into an integrated location system. The method realizes the seamless switching method between the interior and the exterior through three switching methods; the invention mainly solves the related technical problems, such as the integrated hardware and the software for the seamless switching method between the interior and the exterior. The invention has the positive effects that the storage capture and the flow follow are realized for the more rapid and exact location; the invention improves the sensitivity index of the end user; the invention has the advantage of the realization of seamless switch under the condition of two signals with simplicity and reliability.

The invention discloses a general airplane tandem hybrid power system. The system comprises a generator, a rotor engine connected with the generator and used for driving the generator to generate power, a driving motor used for providing driving force for propellers and a power battery used for providing electricity for the driving motor. By means of the system, each item of performance indicatorof a general airplane is effectively met, energy consumption is saved, the environmental pollution is reduced, and energy crisis is relieved.

The invention discloses a tailing cementing filling material and a preparation method thereof, wherein the tailing cementing filling material comprises mine acid wastewater neutralizing residue, ball-milled slag, an excitant, tailings and water according to a mass ratio of 45-70:65-95:5-15:830-870:300-400. According to the invention, the method completely utilizes the existing waste residues of mines and smelting plants, and has characteristics of high waste residue utilization rate, excellent mechanical property and good flowability.

The invention discloses a method for preparing biodiesel by the catalysis of a rare-earth oxide mesoporous material. In the method, the biodiesel is prepared by reacting vegetable oil serving as a raw material with methanol or ethanol and adding a certain amount of catalyst under the action of esterification and ester exchange. The method comprises the following steps of: adding the vegetable oil and the methanol or the ethanol into a high-pressure reaction kettle, wherein a mass ratio of the vegetable oil to the methanol or the ethanol is (0.2-2):1; adding the rare-earth oxide mesoporous material in an amount which is 1 to 20 percent of the mass of the vegetable oil, and stirring mechanically at the temperature of between 60 and 240 DEG C to perform ester exchange reaction for 1 to 5 hours; after reaction is finished, performing suction filtration while the mixture is hot, and separating a rare-earth oxide mesoporous catalyst from the mixture; distilling a liquid phase to recover the methanol or the ethanol; and transferring the liquid phase to a separating funnel, and standing, so that the upper layer is coarse biodiesel, and the lower layer is glycerol serving as a byproduct. The production process is simple, the catalytic activity is high, the catalyst can be recycled, the aftertreatment is convenient, and industrial waste water is avoided.

The invention relates to a method for preparing white carbon black through a one-step method, which is characterized by introducing a water glass solution into a spray drying reaction tower with a carbon dioxide atmosphere, and performing in-situ reaction to prepare the white carbon black. The method provided by the invention comprises the following steps: uniformly stirring the water glass solution having a certain modulus and containing certain concentration of quaternary ammonium salt at a certain temperature and a certain stirring rate, introducing into the spray drying tower, performing in-situ reaction with carbon dioxide, and performing spray drying to obtain the white carbon black finished product. The method provided by the invention has low requirements for equipment, greatly reduces subsequent white carbon black processing, and saves resources. The raw materials are simple, accessible and low in cost; waste of water resources and use of acid are reduced; the method is quick and efficient in reaction and friendly to environment; and the generated white carbon black product is small in size, is uniformly distributed, conforms to various performance indices of white carbon black for rubber and has favorable economic benefits.

The invention discloses a preparation method and application of a low-cost high-purity graphite material. The preparation method comprises the following steps: pretreating waste graphite powder to obtain graphite powder of which D50 is less than or equal to 10 microns; the preparation method comprises the following steps: preparing active powder A from graphite powder, carbon / carbon powder and asphalt; then preparing active powder B from green coke and asphalt; mixing the active powder A, the active powder B and high-temperature asphalt to prepare pressed powder; a green body block is obtained through a pre-mold pressing-gradient isostatic pressing forming process; roasting the green block at 800-1200 DEG C for 2-4 hours, cooling to 200-300 DEG C, and naturally cooling to room temperature to obtain a roasted block; and placing the roasted block in a vacuum graphitization furnace for atmosphere protection, treating at 2500-2800 DEG C for 2 hours, cooling to 200-300 DEG C, and naturally cooling to room temperature to obtain the high-purity graphite material. According to the preparation method, the graphite waste powder is adopted as the aggregate, so that the raw material cost can be effectively reduced, the additional value of the high-purity graphite waste powder can be improved, dipping and repeated roasting are not needed, the preparation process is simple, the production period can be effectively shortened, and the production cost can be reduced.

The invention discloses a wilkinson power divider, which comprises a dielectric layer, a signal metal layer attached to one side of the dielectric layer and a metal bottom layer attached to the otherside of the dielectric layer, wherein the signal meta layer, the dielectric layer and the metal bottom layer form a microstrip structure; and the signal metal layer comprises an input port, a microwave transmission branch, an output port, an isolating resistor, a first triangle pile structure and a second triangle pile structure. Compared with a traditional ultra-wideband wilkinson power divider,the wilkinson power divider disclosed by the invention has the advantage that the circuit layout area is greatly saved on the basis of effectively broadening the band.

The invention discloses a 0-18 GHz ultra wide band frequency sweep source and relates to the technical field of microwave. The 0-18 GHz ultra wide band frequency sweep source comprises a reference source module, a first filtering module and a second filtering module, wherein the reference source module generates any point frequency or linear frequency modulation signal of 0-1.4 GHz by using a high-speed DDS technology, and uses an ultra-wideband low-noise PLL technology integrated with a VCO generating a 8.6-15GHz ultra-wideband frequency hopping high local oscillation signal with low phase noise and low stray and other y point frequency local oscillation and excitation signals. Compared with a direct synthesis technology, the frequency sweep source has the advantages that the size can beeffectively reduced, through careful design of a frequency conversion scheme and application of two filtering modules to a broadband switch filtering technology, the frequency sweep source can achieveultra wide band through a simplified structure, and the size requirement is met while the performance index is met.

The invention discloses a supercavitating vehicle H-infinity controller design method. The method comprises the following steps: 1, establishing an underwater supercavitating vehicle nonlinear kineticmodel, and setting model parameters to obtain a supercavitating vehicle longitudinal plane motion equation; 2, according to the navigation state of the supercavitating vehicle, calculating the tail immersion depth and the tail immersion angle of the supercavitating vehicle, and obtaining the sliding force of the supercavitating vehicle; 3, establishing a linear matrix inequality according to thelongitudinal plane motion equation of the supercavitating vehicle; 4, solving the linear matrix inequality to obtain a state feedback H-infinity controller; 5, using the state feedback H-infinity controller for the supercavitating vehicle, performing simulation analysis on the system, when the control effect meets the requirement, completing design, otherwise, executing step 6; and 6, adjusting the weighting coefficient of the state feedback H-infinity controller and returning to step 5. The designed H-infinity state feedback controller can guarantee stable operation of the supercavitating vehicle within a certain range and meet the H-infinity performance index.

The invention discloses a robot test system based on a semi-physical simulation technology. The robot test system comprises a teaching box; a robot control system which is used for executing corresponding actions according to the control instruction; a real-time simulation system which is used for collecting test data including real-time position data, attitude data and speed data of the robot control system; a main control system, wherein the main control system establishes communication with the real-time simulation system. A target motion model corresponding to the execution action of the robot control system is preset in the main control system, and the main control system is used for receiving the test data acquired by the real-time simulation system, generating a current motion modelaccording to the test data and displaying the target motion model and the current motion model for comparison and evaluation by a user. The dynamic characteristics, the static characteristics and thenonlinear factors of the robot control system can be truly reflected, then the design of the robot control system is improved and corrected, and a user can adjust control parameters in time so as tomeet system performance indexes.