30results about How to "Meet performance standards" patented technology

The invention discloses a preset performance ocean bottom flying node trajectory tracking control method based on a disturbance observer, relates to a preset performance ocean bottom flying node trajectory tracking control method, and aims to solve the problems that an existing method does not consider modeling uncertainty and ocean environment disturbance and propeller faults affect the OBFN (Ocean Bottom Flying Node). The method comprises the following steps that: 1: establishing a Fossen outline six-degree-of-freedom nonlinear kinetic model; 2: carrying out OBFN kinetic model transformationon the nonlinear kinetic model established in S1 to obtain an OBFN kinetic model, and determining an OBFN tracking error equation according to the OBFN kinetic model; 3: establishing a performance function; 4: carrying out error transformation on the tracking error in the S3 to obtain a transformed error; and 5: according to the transformed error obtained in S4, designing an OBFN system total uncertainty observer and a preset performance trajectory tracking controller. The method is used in the field of trajectory tracking control.

The invention discloses a pre-set performance trajectory tracking control method of an ocean bottom flying node (OBFN) by considering propeller output saturation, relates to the pre-set performance trajectory tracking control method of the OBFN, and aims to solve the problem that current disturbance, modelling uncertainty, propeller fault, propeller output saturation and the like are not considered at the same time in the prior art. The method in the invention comprises the steps of: (1), establishing a Fossen-outline six-degree-of-freedom nonlinear dynamical model; (2), obtaining a dynamicalmodel of the OBFN, and determining the tracking error equation of the OBFN according to the dynamical model of the OBFN; (3), establishing a performance function; (4), performing error conversion on the tracking error in the step (3), so that the converted error s is obtained; (5), introducing propeller output saturation, and determining an auxiliary system used for processing propeller output saturation; and (6), designing an OBFN system total uncertainty observer and a pre-set performance trajectory tracking controller. The method in the invention is used in the field of trajectory trackingcontrol.

The invention belongs to the technical field of processing of metal surfaces, and provides a composite coating on the surface of an anti-alkali anti-corrosion aluminum alloy and a technology. The composite coating comprises aluminum or an aluminum alloy matrix and an anode oxide film layer coated on the aluminum or the aluminum alloy matrix, wherein an organosilicon coating is coated outside the anode oxide film layer, and the organosilicon coating is a composite layer consisting of epoxy modified organic silicon resin and methyl methacrylate. The organosilicon coating is firmly coated on the surface on which anodic oxidation is performed through construction of a mixing method and a spraying method, soaking, diffusion and closing on oxide film holes and solidification at 180 DEG C for 20-25min after flash drying of the surface layer of the organosilicon coating, infiltration of corrosive substances or alkaline substances on the inner-layer oxide film and the aluminum matrix is insulated, an aluminum alloy product processed by the technology disclosed by the invention has a good anti-alkali property and a good anti-corrosion property, the high temperature resistant property can be improved to 180 DEG C, so that cracks do not exist, and performance standard requirements can be satisfied under the condition that original appearance requirements are not changed.

The invention relates to a PEEK (polyether ether ketone) composite material preparation method. The material is chopped carbon fiber / PTFE / PEEK composite material for a gas compressor valve sheet. The technical process for preparing the composite material is innovative in that: the PEEK material is enhanced through the filling of the complex of chopped carbon fiber and polytetrafluoroethylene; the wear resistance of the PEEK composite material is improved with polytetrafluoroethylene; the chopped carbon fiber / PTFE / PEEK composite material is subjected to blending extrusion with a double-screw extruder; and after traction, cooling and pelletizing, the modified PEEK composite material is obtained. In the field of gas compressor valve sheet, compared with traditional metal materials, the PEEK composite material has good high rigidity and high toughness, and also relatively high dimensional stability, wear resistance and fatigue resistance. Also, with the material, compressor efficiency can be improved, and compressor noise can be reduced.

The invention provides a tempering method of mineral wool produced from silicon manganese slag and relates to a tempering method of high-temperature hot-molten slag during the production of building mineral wool from metallurgy furnace slag. According to the tempering process, molten silicon manganese slag produced during the production of silicon-manganese alloy through mine heating method is directly poured into a heating furnace and is heated and subjected to heat preservation, and a tempering agent is added and is uniformly mixed with the molten silicon manganese slag for tempering. According to the tempering method, the molten slag is poured into an electrode of a heat preservation furnace so as to generate fluidity, so that adequate mixing with the added tempering agent is accelerated, and a silicate system is rapidly formed; and the molten slag with proper melt temperature and viscosity and with components meeting wool slag blowing requirements is obtained through the heating ofthe heat preservation furnace, so that the problem that molten slag is difficult to be mixed with the tempering agent so as to be cooled is solved, the performance standard of the mineral wool is satisfied, the mineral resources are saved, and the industrial waste slag is well utilized.

The invention discloses a stacked friction pendulum bearing. The stacked friction pendulum bearing comprises a sliding block containing cavity, and a first concave surface disc and a second concave surface disc which are sequentially stacked in the same direction from bottom to top, wherein a sliding block is arranged between the second concave surface disc and the sliding block containing cavity;outer side faces of the sliding block containing cavity and the first concave surface disc are connected with upper and lower structural members respectively; composite material friction surfaces arearranged among the sliding block, the second concave surface disc and the sliding block containing cavity, and between the first concave surface disc and the second concave surface disc. According tothe stacked friction pendulum bearing disclosed by the invention, the first concave surface disc and the second concave surface disc are stacked in the same direction, so that a restoring force is increased, a resetting capability of the sliding block is improved, and residual deformation is reduced; the first concave surface disc, the second concave surface disc and the sliding block are in surface contact, so that no bearing force is suddenly changed, and the bearing force is high; friction coefficients of a second composite material friction surface and a third composite material frictionsurface, and the curvature radii of the first concave surface disc and the second concave surface disc can be adjusted, so that different performance standards are met. The stacked friction pendulum bearing has the advantages of simple structure, clear force transmission, high reliability and wide application range.

The invention discloses a preparation method of a powder metallurgy brake pad friction block for a high-speed train. The preparation method comprises the following steps that 1, friction body raw materials are placed into a drying machine to be dried, the corresponding weight parts of raw materials are placed into a mixing machine to be mixed, the mixture is transferred into an ultrasonic apparatus for ultrasonic treatment, and mixed friction body powder is obtained, wherein the friction body is prepared from Cu, Fe, MoS2, graphite, chromite powder, hematite powder and mullite powder; 2, the mixed friction body powder obtained in the step 1 is placed into an automatic powder pressing machine to be pressed and formed; and 3, the pressed friction block, a steel back and a welding pad are placed into an atmosphere sintering furnace to be sintered, and therefore the finished product is obtained. According to the preparation method, the process is simple, operation is easy, the cost is low, the prepared brake pad friction block is stable in friction performance, the friction coefficient can reach 0.35 or above, the abrasion rate is low, the hardness is moderate, cracking resistance and wear resistance are high, and the service life is long.

The invention belongs to the technical field of prevention and controlling of unorganized emission of dust in storing and transporting processes of coal, and discloses a white dust suppressant and a preparation method and application thereof. The white dust suppressant is prepared by the following raw materials in parts by weight: 50-200 parts of polyether diol with molecular weight of 1000, 50-200 parts of polyether diol with molecular weight of 2000, 10-50 parts of epoxy resin E-40 or E-20, 25-100 parts of polyethylene glycol, 50-200 parts of titanium oxide, 25-100 parts of calcium carbonate or argil or diatomite, 5-10 parts of copolymer containing acid group, 2-20 parts of sodium tripolyphosphate or sodium metasilicate, 20-200 parts of propylene glycol methyl ether acetate or 2,2,4-trimethyl-1,3-amyl glycol monoisobutyrate, 5-30 parts of toluene diisocynate, 5-15 parts of N-methyldiethanolamine, 5-15 parts of organic solvent, and 200-500 parts of deionized water.

The invention provides straw-potato residue environment-friendly tableware. The raw materials comprise the following components in percentage by weight: 10-15 percent of wheat straw powder, 41-51 percent of potato residue, 2.8-6.9 percent of calcium carbonate, 3.5-6 percent of polyvinyl alcohol and 28.5-35 percent of water. The invention also discloses a method for preparing the straw-potato residue environment-friendly tableware. The method comprises the following steps: mixing, molding and the like. The environment-friendly tableware prepared in the invention is safe, non-toxic, high in strength, high in waterproof and oil-proof performances and short in degradation period.

The invention discloses a manufacturing method of a bamboo ancient egg-shaped and holed wind instrument. The bamboo ancient egg-shaped and holed wind instrument comprises an instrument body, a blowing hole and sound producing holes, wherein the instrument body comprises an upper half and a lower half, the upper half is provided with an upper half connector, and the lower half is provided with a lower half connector. The manufacturing method includes: selecting a bamboo root, processing with high temperature, shaping, performing die assembly, opening the holes and decorating. The bamboo ancient egg-shaped and holed wind instrument has the advantages that the shapes of the manufactured instruments are different due to the fact that the instruments are made of natural materials; the range of the instrument ranges from low pitch 5 to high pitch 2, the instrument can also be forcibly manufactured into an instrument with the range ranging from high pitch 3 to high pitch 5, the tone of the instrument is graceful and pleasant to the ears, and playing requirements can be satisfied; ten finger holes include eight front holes and two rear holes, and sounds of several degrees can be blown in a bend-down and extensive manner; the instrument made of the bamboo root is attractive in appearance, artistic and pleasant in tone and conforms to playing standards; waste bamboo roots are reused, and sustainable development of economy is benefited; a person needs to uses breath, hands and the mouth to play the instrument, the functions of the whole body are mobilized, and the person can become ingenious and the physical and mental health of the person can be benefited if the person plays the instrument for a long time.

The invention relates to a hand motion automatic correction and recognition method based on electroencephalogram signal detection. The method includes the following steps that 1, ERP components of electroencephalogram signals of a healthy subject are acquired; 2, electroencephalogram signals, in a corresponding brain area, of a patient suffering from serious motion limitation are acquired; 3, a feature calculation time window Fw is set, the peak value, the mean value Mean, the standard deviation SD, the correlation coefficient CORR of collected electrode signals, the autoregression model coefficient AR and the electroencephalogram signal energy E, in the feature calculation time window Fw, of the electroencephalogram signals in the finger motion automatic correction test of the healthy subject are acquired, and the peak value, the mean value Mean, the standard deviation SD, the correlation coefficient CORR of collected electrode signals, the autoregression model coefficient AR and the electroencephalogram signal energy E, in the feature calculation time window Fw, of the electroencephalogram signals in the finger motion automatic correction test of the patient suffering from serious limitation are acquired; 4, classification and recognition are carried out through a binary classification support vector machine, and whether a motion completed by the subject in the hand motion automatic correction test is a correctly-completed automatically-corrected motion is judged. Compared with the prior art, the method has the advantages of being applicable to hand motion automatic correction, accurate in recognition result, broad in application prospect and the like.

The invention belongs to the technical field of car accessory processing, and provides a polycarbonate car door post plate surface compound protective coating structure and a technique. The structure comprises a door post plate body component, wherein the door post plate body component is formed by integral injection molding of a polycarbonate material; a double compound protective coating, formed by product annealing, piece loading, primary coat electrostatic dust collection, primary coat shower coating, primary coat leveling, primary coat baking, primary coat cooling, coat electrostatic dust collection, topcoat shower coating, topcoat leveling, topcoat baking, cooling and piece loading, serves as a final protective layer of the surface of the door post plate body component; a primary coat is an acrylic resin coating; and a topcoat is a silicone resin coating. The structure and the technique have the advantages that a polycarbonate car door post plate treated by the technique has better weather resistance, scraping resistance and glossiness, so that the requirements of a car factory on performance standards are met; the application of the polycarbonate car door post plate is promoted; and the structure has the advantages of good weather resistance, high hardness and excellent scraping resistance.

The invention relates to the field of wood floor manufacturing, in particular to a processing technology of an environmental-friendly solid wood composite floor. The processing technology of the environmental-friendly solid wood composite floor includes the following steps of coating adhesion primer; coating elastic wear-resistant primer; coating wear-resistant primer; coating sanding primer; coating matte primer; coating water-based UV adhesion finishing coat; and coating water-based transparent coloring finishing coat. According to the processing technology, by using the combination of UV primer and water-based UV finish coat to conduct opening coating, the wood floor has high hardness, strong wear resistance, and meets performance standards, and the release of harmful substances is farlower than industry standards, and the wood floor is more environmental-friendly than the wood floor coated with traditional UV.

The invention relates to a high-temperature-sintering varnish cured under an LED-UV cold light source and a preparation method of the varnish. In the method, composite resin and an active diluent anda plurality types of surfactants are employed; a plurality of small-molecular substances are added; the resins, in different types, are respectively treated; and then a stepwise temperature-increasinguniformly stirring and mixing process is carried out. The method not only can improve flexibility and glossiness of the varnish during preparation of printing ink and enhance the adhesion force whenthe varnish, after printing with inorganic pigments, is transferred on a base material, but also improves weather resistance varnish during preparation of the printing ink. The varnish has excellent anti-heat aging and anti-cold aging effect, ultraviolet aging resistance, waterproof effect and acid and alkali resistance. Meanwhile, wearing resistance, tensile rate and hardness of the varnish during preparation of the printing ink are enhanced.

The invention relates to a sink type cleaning device which comprises a first sink, a second sink internally provided with a cleaning mechanism, and a ventilation structure. The ventilation structure comprises an exhaust assembly arranged on the side wall of the second sink, an air inlet assembly arranged on the side wall of the first sink, and a ventilation pipe connecting the exhaust assembly with the air inlet assembly, the exhaust assembly is communicated with fluid inside the second sink, and the air inlet assembly is communicated with fluid inside the first sink. The sink type cleaning device is characterized in that the air inlet assembly is provided with a condensation assembly for condensing fluid and arranged to be used for condensing at least partial water vapor in the fluid drained through the air inlet assembly. Compared with the prior art, the sink type cleaning device has the advantage that the steam is condensed on the condensation assembly, water can flow out of the airinlet assembly along the condensation assembly and finally flows into the first sink, the phenomenon that condensed water flows into an air inlet of the air inlet assembly is avoided, the requirementfor the dish-washing machine performance standard is met, and the phenomenon that due to the fact that direction ventilation is caused to a cabinet, moist, mildew and damage are caused to the cabinetis avoided.

The invention belongs to the technical field of metal surface treatment, and provides an alkali-resistant and corrosion-resistant aluminum alloy surface composite coating and its process, including an aluminum or aluminum alloy substrate and an anodized film layer attached to the aluminum or aluminum alloy substrate, an anodized film There is an organosilane coating attached to the outside of the layer. The organosilane coating is a composite layer composed of epoxy-modified silicone resin and methyl methacrylate. After the surface layer is flash-dried, it is cured at 180°C for 20-25 minutes, and it is firmly attached to the anodized surface, blocking the penetration of corrosive or alkaline substances into the inner oxide film and aluminum matrix. The aluminum treated by this process Alloy products have strong alkali resistance and corrosion resistance, high temperature resistance can be increased to 180 ° C without cracking, and can meet the performance standards of car manufacturers without changing the original appearance requirements.

The present invention discloses a thermoplastic upsetting formation process of abrasive ball as one kind of grinding material. Into iron-base material, Cr, C, Mo, V, Mn, Si, RE and other alloy elements are added to form alloy material, which are passed through smelting, casting, cutting, thermoplastic upsetting and forging formation, post-forging treatment to produce the various kinds of abrasive ball. The abrasive ball product has diameter 30-140 mm, ellipticity less than 3mm, impact toughness over 10 joule / sq cm, and breaking rate less than 0.35%. It is used widely in grinding Fe, Al, Cu and other metal ore powder as well as coal, quartz, various ceramic powder and other non-metal ore powder with microhardness lower than 1000 Hv.

The invention provides negative ion ecological mud as well as preparation and use methods thereof, and relates to the field of building materials. The negative ion ecological mud comprises the following raw materials: heavy calcium carbonate powder, cellulose, ash calcium, starch ether, six-ring stone, white cement, latex powder and talcum powder. The preparation method comprises the steps: weighing the raw materials in proportion, crushing, sieving, and uniformly mixing and stirring to obtain the ecological mud. The use method comprises the steps: preparing the ecological mud and water according to the mass ratio of 1:(0.3-0.4), and uniformly stirring for use. The negative ion ecological mud has the advantage of decomposing and reducing formaldehyde in air, and is more environment-friendly.

The invention discloses a wide voltage power supply circuit applied to a fan or a thermantidote. The circuit comprises an insurance line, an EMC circuit, a rectification filter circuit, a PWM switch control transduction circuit and an energy storage voltage stabilizing circuit which are successively connected. The PWM switch control transduction circuit comprises a PWM control chip U1, a capacitor EC3, a resistor R5, a resistor R6, a capacitor C2, a capacitor C3 and a diode D3. The energy storage voltage stabilizing circuit comprises an inductor L2, a diode D4, a capacitor EC4 and a resistor R7. The capacitor C2 and the capacitor C3 are grounded through the reversely-arranged diode D4 respectively. An anode of the diode D4 is connected to a switch pulse output terminal of a direct current 5V through the capacitor EC4 and a cathode is connected to the switch pulse output terminal of the direct current 5V through the inductor L2. The switch pulse output terminal of the direct current 5V is grounded through the resistor R7. The circuit possesses advantages that a DC85-275V input voltage is universal; an output voltage is stable and smooth; energy consumption is low and the circuit accords with a national performance standard.

The invention discloses a manufacturing method of a bamboo ancient egg-shaped and holed wind instrument. The bamboo ancient egg-shaped and holed wind instrument comprises an instrument body, a blowing hole and sound producing holes, wherein the instrument body comprises an upper half and a lower half, the upper half is provided with an upper half connector, and the lower half is provided with a lower half connector. The manufacturing method includes: selecting a bamboo root, processing with high temperature, shaping, performing die assembly, opening the holes and decorating. The bamboo ancient egg-shaped and holed wind instrument has the advantages that the shapes of the manufactured instruments are different due to the fact that the instruments are made of natural materials; the range of the instrument ranges from low pitch 5 to high pitch 2, the instrument can also be forcibly manufactured into an instrument with the range ranging from high pitch 3 to high pitch 5, the tone of the instrument is graceful and pleasant to the ears, and playing requirements can be satisfied; ten finger holes include eight front holes and two rear holes, and sounds of several degrees can be blown in a bend-down and extensive manner; the instrument made of the bamboo root is attractive in appearance, artistic and pleasant in tone and conforms to playing standards; waste bamboo roots are reused, and sustainable development of economy is benefited; a person needs to uses breath, hands and the mouth to play the instrument, the functions of the whole body are mobilized, and the person can become ingenious and the physical and mental health of the person can be benefited if the person plays the instrument for a long time.

The invention discloses a long-service-life strong-condensation daytime running lamp used for an automobile. A fixing plate is fixedly connected to the top end of a lamp housing, the bottom end of the left side and the bottom end of the right side of the lamp housing are each provided with a bolt hole, a condensation lamp housing is arranged inside the lamp housing, an LED lamp panel is fixedly connected to the top end of the interior of the condensation lamp housing, a condensing lens is fixedly connected with the LED lamp panel, step-shaped lamp housings are fixedly connected to the inner wall of the left side of the condensation lamp housing and the inner wall of the right side of the condensation lamp housing respectively, step-shaped circuit boards are arranged at the horizontal stepped positions of the step-shaped lamp housings, lamp bulbs are arranged at the bottom ends of the step-shaped circuit boards, step-shaped condensing lenses are arranged at the bottoms of the lamp bulbs, a lamp rear housing is arranged at the bottom end of the lamp housing, bolt holes are formed in the left end and the right end of the lamp rear housing respectively, the lamp rear housing is fixedly connected with the lamp housing through bolts, and mini type radiators are fixedly connected to the left end and the right end of the lamp rear housing respectively. The long-service-life strong-condensation daytime running lamp used for the automobile is small, exquisite and simple in structure and high in luminous efficiency.