276results about How to "Realize fine control" patented technology

An actuating mechanism for actuating a surgical tool of a surgical instrument including an actuating device having an actuator surface. The actuating device is operable by applying a force to substantially any part of the actuator surface for placing the actuating device in an actuated position from a rest position for actuating a surgical tool. The actuator surface comprises a radially collapsible cage having a plurality of interdigitating actuating pads. Each pad is movable in a radial direction.

The invention discloses a general synthesis method of a three-dimensional compound structure based on three-dimensional MXene, and belongs to the field of nano materials. The three-dimensional compound structure is composed of a three-dimensional MXene load inorganic nano structure and is of a flower-like hierarchical porous structure. The method comprises the steps that an ultrasonic atomizer isadopted for atomizing mixed suspension liquid of three-dimensional MXene particles, metal salt and an auxiliary into aerosol micro-droplets, and under inert or reactive atmosphere, high-temperature fast drying is conducted to obtain the three-dimensional compound structure with controllable structure and size; or the three-dimensional MXene particles and metal salt or a nonmetallic compound are evenly mixed in solvent or in a solid-phase mode to obtain a mixture, and high-temperature calcination is conducted under the inert or reactive atmosphere to obtain the three-dimensional compound structure with controllable structure and size. By means of the three-dimensional compound structure based on the three-dimensional MXene, the problems of inorganic nano material particle aggregation, poorconductivity and two-dimensional MXene stacking can be solved, and thus a foundation is laid for preparation, processing and various aspects of application of a MXene-based high-performance functionalmaterial.

The invention discloses a central air conditioner fine control method. The method includes the steps of establishing energy consumption models of all sub-systems of an air conditioner, determining parameters to be recognized in the models of all the sub-systems, determining constraint conditions, establishing a target function of a global optimization control model, and conducting optimizing through a genetic algorithm. Modeling is conducted for energy consumption of a central air conditioning system, and the power consumed when the central air conditioning system runs in a working state of the capacity smaller than the rated capacity is reduced through the genetic algorithm; through the cooperation of various control strategies, the all-directional air conditioner fine control is achieved, the energy conservation scheme is more comprehensive and exquisite, and the energy conservation effect is more remarkable.

The invention discloses high-efficiency kitchen waste aerobic fermentation equipment. The equipment comprises a fermentation bin, a grinding and dehydrating system, a stirring and pushing system, a heating system, a biological deodorizing system, an aeration system, a water supply system and an automatic control system. According to the fermentation equipment, kitchen waste compost is divided intofour stages including grinding, heating, high temperature and curing, and parameters of the heating system, stirring system, aeration system and water supply system can be independently set in each stage, so that parameters in three bins can be finely controlled, and effective performance of fermentation can be favored; and the dynamic respiratory index DRI is applied in the kitchen waste fermentation equipment to serve as an index for measuring product maturity, and the quality of mature fertilizer can be finally guaranteed by the advanced monitoring method.

The invention discloses porous hydroxyapatite biological ceramic and a preparation method thereof. The porous hydroxyapatite biological ceramic has the aperture size and distribution, porosity, hole-through condition and hole surface suitable for growth of bone tissues and is provided with macro pores capable of accommodating grown new bones, and the pore wall of the ceramic is provided with rich lamellar pores, so that the ceramic has an effect of conducting the formed bones. The preparation method comprises the following steps of: setting the orientation, the diameter and the distribution density of macromolecular fibers in a mold in advance, and freezing and solidifying water-based hydroxyapatite slurry by using a directional temperature field, so that the hydroxyapatite powder granules are gathered and rearranged under push rejection of directionally grown ice crystal; and performing freeze drying on the obtained ice blank, sublimating the ice crystal, and sintering, so that fine control of a porous micro structure can be realized. The porous hydroxyapatite prepared by using the method has high hole-through rate and high porosity, and is suitable for growth of the bone tissues.

The invention discloses a production method and a production system for parameterized steel bars applied to prefabricated components. The production method includes: by means of establishing and labelling a reference plane and defining labelled family parameters, realizing interrelation between the family parameters and the reference plane, establishing lofting path model lines and steel bar placement, locking paths and extension edge lines with the reference plane, and establishing a parameterized three-dimensional steel bar family model for the steel bars; during production of the prefabricated components, by the aid of the three-dimensional steel bar family model, re-inputting parameters to complete size change of same types of the components, and generating a production drawing; by the aid of the production drawing, realizing large-scale and refined production for the prefabricated components. The production method and the production system have the advantages that shape and size of the needed steel bars can be generated quickly by only modifying a few parameters, refined controlling of the steel bars is realized, constraints of inflexible freehand sketching for the steel bars by AutoCAD (automatic computer-aided design) are ridded of, the parameters of the steer bars can be input into various steel bar fabricating facilities directly, and convenience is brought to production and fabrication.

The invention discloses a secure accessing method and device wherein the method comprises the following steps: obtaining the accessing right of a first application to a second application when an accessing request of the first application to the second application is monitored wherein the accessing request includes an identification mark of the to-be-accessed information and operations to targets associated with the to-be-accessed information; determining whether the information mark of the to-be-accessed information exists in a preset sensitive information characteristic database or not if the first application has the access right to the second application; if the information mark of the to-be-accessed information exists, obtaining the operation right to the information mark of the to-be-accessed information from the sensitive information characteristic database and determining whether the operations to relevant targets meet the operation right or not; and if the operations to relevant targets meet the operation right, allowing the first application to operate on the targets of the to-be-accessed information so as to solve the safety hazards that largely exist in the program accessing method in the prior art.

The invention provides a control device for intermittent pumping of an oil pumping unit without shutting down. The control device comprises a controller, a frequency converter, an electromotor and the oil pumping unit which are electrically connected in sequence. An electric parameter collecting module is arranged on the controller. A rotating speed sensor is arranged on the electromotor. A load sensor, a displacement sensor and a crank position sensor are arranged on the oil pumping unit. For a low-liquid-amount and intermittent liquid outlet well, the control device provides the most reasonable control method according to the actual liquid outlet situation to meet supply-production coordination of the oil well, so that fine control is achieved, the operation efficiency of an oil well system is improved, energy consumption is lowered, automatic, safe and unattended intermittent pumping operation of a well field is achieved, and the problems of large management difficulty and time and labor consuming of site manual intermittent pumping are solved.

The invention discloses a heating and decentralized air-conditioning system for a teaching or office building and a control method; in the system, an operation terminal is connected with a server through a first network; the server is connected with a regional manager group through a second network; all regional managers are connected with all on-site controllers in corresponding on-site controller groups through data communication lines; all the on-site controllers are arranged in all the rooms of the teaching or office building; all the on-site controllers are connected with radiators in the rooms; radiator electric two-way valves are arranged on hot water inlet pipes of the radiators; the method comprises the steps that: centralized control is realized by networking, so that heat supply, room temperature as well as heating and decentralized air-conditioning of all the rooms in the teaching or office building are controlled in real time, the heating or refrigeration speed is high, the automation of heating and decentralized air-conditioning of the teaching or office building can be effectively improved, the purpose of energy saving is achieved, and heating or refrigeration are truly realized.

The invention discloses a method and a system for controlling access right of internet users; when a user terminal applies IP (internet protocol) for DHCPv6 (Dynamic Host Configuration Protocol version 6) server, different Option 38 information is additionally added in a DHCPv6 request according to a 802.1x authenticated state of the user, the DHCPv6 server distributes IPv6 address after matching Option 38 information, and the user terminal accesses a network through access right configured by a switchboard on a convergence layer according to different IPv6 addresses obtained before and after authentication. In the invention, by utilizing the convenience of the DHCPv6 and a safety certificate mechanism of the 802.1x, an illegal user terminal is prevented from accessing the network and the right of a legal terminal user can be precisely controlled after the legal terminal user passes through the authentication.

The invention belongs to the technical field of fuel cells, and particularly relates to a preparation method of a phosphoric acid-doped layer by layer self-assembly polymer composite film. The preparation method comprises the following steps of firstly preparing an SPEEK (Sulfonated Polyether Ether Ketone) homogeneous phase water solution; putting a glass sheet into a PU (Poly Urethane) solution for soaking; taking the glass sheet out; soaking into deionized water; taking out, and blowing to realize no water on the surface; re-soaking in the SPEEK homogeneous phasewater solution; then soaking in the deionized water; blowing to realize no water on the surface; completing layer by layer self-assembly of PU and SPEEK; repeating for 170 to 200 times to obtain a (SPEEK/PU) 170 to 200 self-assembly film; after soaking a glass sheet carrying the (SPEEK/PU) 170 to 200 self-assembly film into a hydrofluoric acid solution for 10min, taking the (SPEEK/PU) 170 to 200 self-assembly film out; soaking the (SPEEK/PU) 170 to 200 self-assembly film into a PA water solution, and obtaining the phosphoric acid-doped (SPEEK/PU) 170 to 200 self-assembly film. According to the preparation method of the phosphoric acid-doped layer by layer self-assembly polymer composite film provide by the invention, a layer by layer self-assembly technology is utilized, so that a high-temperature proton exchange film with a layer by layer self-assembly structure, high proton conductivity, a favorable mechanical property and stabilityis prepared based on a polycation polymer and a polyanion polymer.

The invention discloses a method for determining a duct piece splicing point position of a universal ring for subway shield construction. The method comprises the following steps: performing shield tunneling construction on a constructed tunnel from back to front along the central axis of the tunnel by adopting a shield tunneling machine; after a ring of the shield tunneling construction is completed, performing shield duct piece splicing construction; before any ring of shield duct piece splicing construction, determining the duct piece splicing point position of shield duct pieces of the current ring first, wherein the method for determining the duct piece splicing point position comprises the following processes: firstly, determining selectable splicing point positions; secondly, determining selection influence indexes and weight coefficients thereof: respectively determining the three selection influence indexes which influence the selection of the duct piece splicing position point and the weight coefficients thereof; thirdly, performing selectivity evaluation on the selectable splicing position points: respectively evaluating the selectivity of each selectable splicing position point according to a weight coefficient method, and determining the duct piece splicing point position of the current shield duct piece. The method disclosed by the invention is simple in step, reasonable in design, convenient to implement and good in using effect, and can determine the splicing point position of the duct pieces of the universal ring easily, conveniently and accurately.

The invention relates to a method for simultaneously improving the strength and electric conductivity of a Cu-Cr-Nb alloy. The alloy comprises the components with percent by weight: 0.5-5.0% of Cr, 0.5-5.0% of Nb, 0.01-1.00% of M and the balance copper, wherein M is at least three components selected from RE, B, P, Si, Ca, Zr, Li, Mg, Ti, Ni, Fe, Sn and Mn; and RE is at least one component selected from Ce, La, Y, Pr, Nd, Sm and Sc. The Cu-Cr-Nb-M alloy is prepared through powder formation and thermo-mechanical treatment. Under the combined action of microalloying, rapid solidification, rapiddensification and the thermo-mechanical treatment, the microscopic structure of the alloy is regulated; and under the synergistic action of various strengthening mechanisms, the strength of the alloyis improved, and the comprehensive performance of the alloy is improved. The size of the second phase in the alloy prepared by using the method is smaller than or equal to 0.50 micrometer; the secondphase is uniformly distributed; the room-temperature tensile strength of the alloy is equal to or higher than 450 Mpa; and the electric conductivity is equal to or higher than 80% IACS. The tensile strength is equal to or higher than 95 MPa at the high temperature of 700 DEG C; and it is achieved that the electric conductivity and the strength of the Cu-Cr-Nb alloy are simultaneously improved andwell matched.

A CO2 gas fertilizer fine regulation and control method and a device which are used for a solar greenhouse are provided. The device monitors environment information and crop growth information of the greenhouse in real time; and through a photosynthetic rate prediction model based on a BP neural network, the optimal CO2 gas fertilizer quantity demanded is determined and the value of the photosynthetic rate is predicted, and therefore fine regulation and control of CO2 concentration is achieved. According to the invention, the fact that a CO2 gas fertilizer in the solar greenhouse needs to be finely supplied in dependence on crop growth demands is achieved, the quality of greenhouse crops is improved, the yield of the greenhouse crops is risen, and environmental pollution caused by excessive application of the CO2 gas fertilizer is avoided.

The invention relates to a greenhouse CO2 gas fertilizer increasing method, device and system. The method comprises the following steps that: environment information and the photosynthetic rate value of crops in a greenhouse are acquired; with the environmental information and the photosynthetic rate value respectively adopted as an input variable and an output variable, an SVM-based photosynthetic rate prediction model can be established; a relation curve graph between CO2 concentration and photosynthetic rate under the interaction effect of various environmental factors can be obtained through analysis; a CO2 concentration saturation point corresponding to a maximum photosynthetic rate value under combined conditions of specific environmental factor variables is obtained from the relation curve graph; a CO2 increase adjustment and control model is established; and CO2 supply quantity is calculated, and CO2 is increased in the greenhouse under control. The device comprises a data acquisition unit, a photosynthetic rate prediction model establishment unit, an analysis and processing unit, a CO2 increase calculation unit and an execution control unit. With the CO2 gas fertilizer increasing method, device and system of the invention adopted, optimal CO2 supply quantity can be calculated fast and accurately, and fine adjustment and control of CO2 gas fertilizer increase can be realized, and the photosynthetic efficiency and yield of the crops can be improved.

The invention provides a uniform-feeding, atomizing, humidifying and water control system. A water cascade control model comprising an outlet water control loop and a feed water flow control loop is built, the outlet water control loop is a main ring, and outlet water of a screw feeder is a control object of the main ring; the feed water flow control loop is an auxiliary ring, and feed water flow is a control object of the auxiliary ring. The water cascade control model utilizes the outlet water of the screw feeder as a control objective. The outlet water control loop utilizes difference between the final raw material outlet water measuring value and the set target value as input, output value of the water outlet control loop is converted as the set value of the feed water flow control loop, and the feed water flow control loop utilizes the difference between the set value and the feed water flow measuring value as input, and control value is outputted to a flow regulating valve via operation. Water added into the raw materials is controlled by a closed loop, and outlet water content of the screw feeder is automatically and stably controlled.

The invention relates to a producing method of a piezoelectric electret film, and the producing method is as follows: fluorinated ethylene propylene copolymer films and polytetrafluoroethylene films are alternately laminated together, and then placed on a substrate, after the alternate lamination, two outermost layers are the polytetrafluoroethylene films; a latticed pressing plate is arranged on an outermost layer t polytetrafluoroethylene film opposite the substrate, pressure is applied to the pressing plate, the alternately laminated structure of the fluorinated ethylene propylene copolymer films and the polytetrafluoroethylene films is heated, after cooling, the pressing plate and the substrate are removed to obtain the piezoelectric electret film provided with micropores in the middle. In the production process of the piezoelectric electret film, through selection of latticed pressing plates with different specifications, such as regulation of mesh net opening mesh number, wire diameter, shape and other parameters and thermal bonding process parameter of the pressing plates, the fine adjustment of microporous structure of the piezoelectric electret film can be realized, and the producing method is strong in practicability, and can be widely popularized and applied. In addition, the invention also relates to the piezoelectric electret film produced by the producing method.

The invention relates to the field of new material preparation, and provides a pressure-assisted induction heating vacuum atmosphere flash sintering device. The pressure-assisted induction heating vacuum atmosphere flash sintering device comprises a furnace body, a pressure system, a flash sintering system, an induction heating system, a cooling system and a vacuum system. The pressure system comprises an upper pressing head and a movable lower pressing head. An upper electrode and a lower electrode are arranged on the end portions of the upper pressing head and the lower pressing head correspondingly and provide pressure for flash sintering samples. The flash sintering system provides a flash sintering circuit. The induction heating system provides heating and heat preservation. The furnace body is cooled by the cooling system. The furnace body is vacuumized by the vacuum system. The inherent defects in a traditional flash sintering technology are overcome, flash sintering power sources can be flexibly selected according to the electrical properties of materials obtained after flash sintering to cause thermal runaway, thus, the density level and microstructures of the samples arefinely adjusted and controlled to the maximum degree, and the device has universality for metal and ceramic materials; and pressure assisting of the flash sintering process can be easily achieved, andnew preparation means can be provided for the research field.

The invention relates to an in-situ mineralized bionic bone hydrogel composite material with an oriented structure as well as a preparation method and application thereof, which comprises a natural plant fiber template, natural polymer hydrogel directionally filled in the natural plant fiber template and hydroxyapatite directionally deposited in the natural plant fiber template. The hydrogel composite material has a three-dimensional porous structure and is anisotropic, which overcomes the problem of uneven distribution of hydroxyapatite particles in the hydrogel matrix; the material has super-strong tensile strength, compression strength, bending strength and toughness, and the mechanical properties are matched with those of hard bone tissues. The material is beneficial to induce pre-osteoblast adhesion and osteogenic differentiation, promote new bone growth, has good osseointegration and mechanical stability, and is suitable for large-area hard bone tissue repair; in addition, the material has adjustable surface activity, and fine adjustment and control of the structure and the surface can be achieved.

The invention relates to a security defense and abnormity detection method, device and system based on an MQTT message queue. The invention belongs to the technical field of shortcut message queue application in Internet of Things. The method comprises the following steps that in preset sampling time, message data sent by a target terminal is received, the message data sent by the target terminal in one period are counted, the weighted Euclidean distance of the statistical result of the message data is calculated, whether the target terminal is an abnormal behavior terminal or not is judged by comparing the weighted Euclidean distance with a preset Euclidean distance threshold value, and the abnormal behavior terminal can be detected and obtained in time. According to the security defense method, blacklist screening, client authentication, client authorization, message issuing and abnormal detection are set in the connection process of the target terminal and the message agent, and the abnormal behavior detection method is called to safely filter the abnormal client, so that the whole message interaction process is safely and finely controlled.

The invention discloses a soybean-induced promoter SP2 and belongs to the construction of artificial synthesis promoters. The soybean-induced promoter SP2 is formed by taking G-box, ABRE, ABF, SORLIP1, CCA1 and E2F as basic cis elements, repeatedly connecting all the elements in series for four times, spacing every two elements through a random sequence of nine bases and then connecting a design fragment and a 35S key promoter Core-CaMV-35S, and is called SP2. The identification on the expression situation of an SP2 promoter-driven reporter gene GUS in transgenic tobaccos shows that the promoter SP2 can be induced by drought, salt, saline, ABA and low-temperature stress and is extremely sensitive to drought stress. The soybean-induced promoter SP2 disclosed by the invention can be directly applied to crop transgenic resistance seed breeding.