547results about How to "With a clear purpose" patented technology

The invention relates to finite time tracks of aircrafts, in particular to a method for rapidly generating a finite time track of a hypersonic aircraft. The method aims to solve the problems that the process of deriving an optimal solution according to a traditional method is complex, nonlinear programming problems with complex constraints cannot be effectively solved, the rapidity and real-time performance of track optimization cannot be met, and complex reentry environmental disturbance and environmental uncertainty cannot be handled. The method includes the steps that 1, the motion model of the hypersonic aircraft is obtained; 2, the nonlinear programming problem is formed; 3, the nonlinear programming problem is described to be a quadric form convex problem; 4, a high-speed resolver is generated; 5, the quadric form convex optimization problem is solved, and the solution is analyzed. The method is applied to the field of the finite time tracks of the aircrafts.

The invention discloses a dynamic and static combined loading rock test machine and test method used for multiphase coupling. The machine comprises a visual confining pressure loading chamber module, air pressure control modules, a dynamic loading module and constant volume modules; and the loading chamber of the visual confining pressure loading chamber module is a steel cylinder structure with a square outside and a circular inside, three surfaces of the loading chamber has windows, high borosilicate glass is embedded in every window to realize the visualization of the test process, an opening in one surface of the loading chamber is provided with a rear door which is convenient to replace and take a test piece, and various monitoring devices are arranged in the loading chamber and are led out through sensor lead wires of a baseboard to realize real-time monitoring of all physical-mechanical parameters of the test piece in the test process. The machine has the advantages of small size, simple structure, convenience in dismounting, and realization of accurate, quantitative and visual monitoring of the adsorption-desorption characteristic of a coal rock standard test piece in different load forms and coupling form and the permeability and the damage dilatancy process of gas-containing coal body in different loading stages.

The invention relates to the field of the electric system technology, in particular to a net rack optimization method for a multi-direct-current centralized fed receiving end power grid. According to the method, the network voltage supporting capacity of the receiving end power grid, the short-circuit current control effect of the receiving end power grid and the short-circuit current control measure cost of the receiving end power grid are all considered. The method includes the steps of taking the maximum multi-direct-current feeding comprehensive short-circuit ratio, the maximum short-circuit capacity comprehensive margin and the minimum total cost of investment of current limiting measures as three objective functions, building a multi-objective optimized mathematical model which includes the three objective functions and power grid constraint conditions, and utilizing an NSGA-II multi-objective genetic algorithm to carry out the multi-objective optimization method. A result provided through the method is a line unlocking or series reactor added combining scheme, and the power grid can have strong voltage supporting capacity and system stability on the basis of controlling of a short-circuit current through moderate cost. The method has strong adaptability to an existing receiving end power grid optimization scheme.

The invention relates to a navigation device and a path searching method. When a path searching part has the following situation that: the final destination is present in the limit area (131) where the own vehicle is limited, the vehicle tool capable of connecting with the perimeter of the final destination is used as the replacement traffic way of the own vehicle based on the information selection of the passenger of the own vehicle. When the elderly is present in the passengers or many children are present in the passengers, a taxi is selected as the replacement traffic way. And, the get-onand get-off yard of the selected traffic tool is used as the transfer destination to search the path again.

The invention relates to a production method of a boron nitride coated diaphragm of a lithium-sulfur battery. The diaphragm is produced from a commercial polypropylene diaphragm, two sides of the diaphragm are uniformly covered with hexagonal boron nitride, and the characteristics of hexagonal boron nitride 'white graphite' are used, so lithium ions are allowed to pass, shuttle of polysulfide anions is obstructed, a reaction of a lithium negative electrode with the polysulfide anions is inhibited, formation of lithium dendrites, lithium sulfide precipitate and fixed lithium is prevented, the capacity, the coulombic efficiency and the cycle stability of the lithium-sulfur battery are improved, the growth of the negative electrode metal dendrite in the cycle process is effectively inhibited, and the safety of the battery is improved. The method has the advantages of simple process route and clear purpose, and the produced diaphragm has multiple functions, and can greatly overcome disadvantages of present technologies.

The invention relates to a power distribution single line graph automatic generating method. Currently, a power distribution single line graph is drawn manually, and the manual method has the disadvantages of large strength and large error probability and is not applicable to single line graphs with complex wiring. The method of the invention adopts trunk meta objects and branch meta objects with automatic picture composition elements under a grading trunk / branch power distribution data model based on arrangement rules of conventional power distribution single line graphs. And the two basic metas compose a recursive graph describing model, the graph parameter recognition is carried out gradually upward from the lowest grade, sub-graphs are generated and assembled grade by grade to generate whole feeder graphs at last, and the grade-by-grade generated graphs occupy space independently. The sub-graph of every branch all occupies space independently, and no overlapping possibility exists among the sub-graphs of the branches. The power distribution single line graph automatic generating method has the advantages of simple tasks and definite targets and is easy for computer programming.

A control apparatus (10) for a machining robot (1) adapted to machine a workpiece (20) by coming into contact with an effector (19) of a tool (18) attached to the machining robot with the workpiece comprises: detecting means (15) for detecting a force or moment acting between the effector of the tool and the workpiece; converting means (22) for converting the force or moment detected by the detecting means into a force or moment acting on the joint axis of the machining robot; deflection calculating means (25) for calculating a deflection occurring at the joint axis of the machining robot on the basis of the force or moment acting on the joint axis of the machining robot and obtained from the converting means; ; and correcting means (28) for correcting at least one of a position command or a speed command for the joint axis of the machining robot in such a manner as to compensate for the deflection calculated by the deflection calculating means. Accordingly, the position of the robot is accurately corrected without being affected by the deflection of the joint axis.

The invention relates to a wireless multi-hop self-organizing network time synchronization system base on a parallel transmission mechanism; the network comprises a plurality of nodes, wherein one node (called Sink node) is externally connected with a public reference clock source; full network time synchronization can be realized through the following steps: the sink node regularly sends a beacon packet containing time synchronization information; the beacon packet is broadcasted in the full network in a parallel broadcasting mode through plasticity interference; the sink node measures starting sending time of the beacon packet in a time synchronization period, and inserts the sending time into the beacon packet; a calculation module updates forwarding times in the beacon packet and immediately forwards the beacon packet after the node receiving the beacon packet; after the node receives the beacon packet, the time synchronization information in the beacon packet can be used to carry out local clock phase deviation correction and frequency deviation correction, and phase deviation and frequency deviation correction values can be used for completing time synchronization.

An active contour model based method for segmenting mammary gland DCE-MRI focus belongs to the field of medical image segmentation and comprises the following steps: obtaining mammary gland DCE-MRI image sequence data by MRI scanning equipment; manually selecting a region of interest; automatically obtaining subtracted size of interest, active contour segmenting focus and visually display focus. According to the invention, based on the features that statistical distributions of mammary gland DCE-MRI image backgrounds are consistent and internal distributions in the focus are different, an edge stopping function of the active contour model is designed, thereby realizing reliable segmentation of the focus and effectively avoiding edge outleakage phenomenon; during the model evolutionary process, re-initialization of a signed distance function is not required, so that the real-time performance of the system is higher. The method has a lower requirement on manual operation in implementation, is high in intelligent degree, low in data storage space requirement, and quick in processing speed, and can effectively obtain comprehensive and steric space information of the focus through three-dimensional angle segmentation, which facilitates the multi-angle observation and analysis of the focus by a doctor.

In the inventory management system managing the inventory status of a commodity (10) displayed in a showcase (300) by using a computer (100), the showcase (300) is provided with an antenna (310) for communicating with an RFID tag (12) attached to a commodity on a commodity shelf, detecting means (322) for detecting a unique number of the RFID tag (12) by communicating with the RFID tag (12) through the antenna (310), and transmitting means (323) for transmitting the detected unique number of the RFID tag (12) to the computer (100) through a network (900). The computer (100) manages the commodity inventory based on the unique number of the RFID tag (12), the unique number being received from the showcase (300).

The invention discloses a high-efficiency separation and purification method of a glabridin monomer. The method comprises the steps of: extracting raw material dried roots of Glycyrrhiza Glycyrrhiza glabra L which is a leguminous plant with an organic reagent A; and then extracting with an organic reagent B; carrying out chromatography by using polyamide columns and macroporous adsorbent resin columns; and finally separating and purifying a target area solution by using high effective liquid chromatogram columns; carrying out on-line test by using HPLC (High Performance Liquid Chromatography), and purposely collecting a glabridin monomer solution to obtain the glabridin monomer with the concentration higher than 98%. The invention has the advantages of high production quantity, high yield rate and good production quality, and is suitable for industrial production.

The invention discloses a control method of an IQ modulator and a system thereof. The control method comprises the following steps of adding disturbance signals of a first disturbance frequency f1 and a second disturbance frequency f2 in an I bias voltage and a Q bias voltage of a light IQ modulator; detecting an output light signal output of the light IQ modulator and the added disturbance signals in real time, and monitoring direct current light power and calculating a correlation coefficient of the input disturbance signals and the output light signal; and using a light power value and the correlation coefficient to carry out feedback adjusting on the bias voltages of the light IQ modulator so that a bias state of the light IQ modulator satisfies an adjusting object. In the invention, through establishing connection between a bias voltage VI of an I path, a bias voltage VQ of Q path control and a bias voltage VP of a P path and the first disturbance frequency f1 and the second disturbance frequency f2, spectrum analysis in the prior art is replaced so that a calculating method is simplified; and an adjusting process possesses directivity, and a bias resolution of a control signal is less than 0.005Vpi.

The invention provides a water flooding oil reservoir fireflood production well selective water controlling and channelling sealing method. The method comprises the steps that a gas channelling preferential migration pathway is sealed and blocked using a channelling sealing agent; and high water-cut preferential migration pathways near an oil well are selectively sealed and blocked. The channelling sealing agent comprises an alkali-resistant surfactant foaming agent and an auxiliary alkaline reducing agent; and the alkali-resistant surfactant foaming agent is selected from one or more of sodium lauryl sulfate, fatty alcohol polyoxyethylene ether sodium sulfate, rosin soap materials, animal and vegetable protein materials, papermaking black liquor and the like, and the auxiliary alkaline reducing agent is sodium oxalate. The water flooding oil reservoir fireflood production well selective water controlling and channelling sealing method is a selective water controlling and channelling sealing integrated technology.

The invention discloses a subway station passenger flow micro statistics and scheduling method. The method comprises the following steps of building a model of the total number of people entering and leaving an automatic fare collection entrance in the time period T, and making a scheduling strategy according to the model; building a dynamic moving model of escalators and pedestrian stairs, and making a scheduling strategy according to the model; and building an in-station-hall dynamic subway waiting people number model, and making a scheduling strategy according to the model. The method has the advantages that the intuitive performance is good; the implementation is simple; and the intentionality is definite, and the like. By the method provided by the invention, the number of people in station entering ticket check-in gate and a station leaving ticket check-in gate in a subway system, the number of people in passages and stairs, and the number of subway waiting people in different station halls in each time period can be predicted; easy-to-be-crowded regions such as station entering and leaving ticket check-in gates, stairs and platforms are subjected to maximum passenger flow threshold value analysis and prediction distribution, so that the passenger flow rule is provided for the relative traffic study; and the data analysis and support is provided for the infrastructure building.

The invention discloses a method for selectively clearing a single-phase ground fault of a ship shore power system. A variable reactor is arranged between a system neutral point and the ground. When the system is in a single-phase ground fault, the occurrence of the single-phase ground fault is judged according to the rise of a neutral point voltage to ground after the ship shore power system is in a single-phase ground fault; after the single-phase ground fault occurs, the variable reactor is controlled to act within the range of a time angle phi 0 in one cyclic wave of the changes of the neutral point voltage to ground, thus the variable reactor is controlled to gradually decrease a reactance value, and an instaneous tripping mechanism of a corresponding circuit breaker is triggered by gradually increasing short-circuit current so as to clear the fault, wherein the ranges of the time angle phi 0 are as follows: phi 0 is not smaller than 0 DEG and not larger than 50 DEG, phi 0 is notsmaller than 105 DEG and not larger than 230 DEG, and phi 0 is not smaller than 285 DEG and not larger than 360 DEG; and before the circuit is completely disconnected, a fuse connected with a corresponding position of the variable reactor is fused, so that the system is restored to a low-current grounding state and the ablation of a contact of a circuit breaker is avoided.

The invention discloses a docosahexaenoic acid-producing bacterium and a mutation and screening method and application thereof. The strain is classified and named as Crypthecodinium cohnii HX-308, is preserved in China Center for Type Culture Collection, and has the preservation number M208246. The strain is a DHA-producing bacterium with high yield, has the DHA content 1.53 times of a starting strain, stable physiological-biochemical characteristic and stable heritability, and simultaneously can produce polyunsaturated fatty acid through liquid culture and fermentation; the content of unsaturated fatty acid reaches 20.4g / L, wherein the DHA content reaches 8.16g / L; and the strain is a good strain for producing natural DHA, and has excellent industrial production prospect.

The invention relates to a method capable of synchronously separating and purifying a crocin I monomer and a crocin II monomer, and belongs to the technical field of separation and purification for active ingredients of Chinese traditional medicines. The method comprises the following steps: taking dried stigmas of Crocus sativus as raw materials, performing 90-95% ethanol extraction, concentration, filter, efficient preparative liquid chromatography separation, product recovery and sephadex gel column chromatography to obtain the crocin I monomer and the crocin II monomer. By virtue of the optimum technique and parameter conditions, the content of the crocin I monomer and the crocin II monomer in the product is up to 99% above respectively; the method is stable in the whole technical process, convenient to operate, high in separation efficiency and low in cost, and can separate out and prepare the crocin I monomer and the crocin II monomer with high purity and large scale.

The invention discloses a simple method for culturing haematococcus pluvialis to produce astaxanthin; the method comprises three culturing processes of narrow neck flask, plastic cask or Nylon bag, cement pit; each step passes through various physical and chemical environmental parameters, such as nitrogen and phosphorus contents, pH value, incubation temperature, illumination intensity, illumination time, exact adjusting and controlling measure of adding with halite or halogeno salt, H2O2 and FeCl2 and cell state, etc; each step has definite object, and reasonable control such that the haematococcus pluvialis has excellent vegetative growth, fast conversion of vegetative growth to non-vegetative growth, and accumulates much astaxanthin, thereby improving the efficiency and stability of culturing, converting and accumulating, and effectively preventing the pollution of mixed algae; because the invention is an open culturing and does not need closed photobioreactor, thereby greatly reducing the production cost and obviously improving the productivity, and open culturing haematococcus pluvialis to produce astaxanthin in large scale.

A film-spreading oil agent capable of preventing and curing rice banded sclerotial blight comprises the following components by weight percent: 10-60 percent of effective component, 3-85 percent of additive, 0-70 percent of filling material, 5-14 percent of water surface diffusant, and 0-10 percent of water, wherein the effective component is one or the combination of any one selected from difenoconazole, propiconazole, hexaconazole, epoxiconazole, tricyclazole, tebuconazole, kresoxim-methyl, azoxystrobin, trifloxystrobin, enestroburin, thifluzamide, validamycin, and prochloraz, and the weight ratio of the two effective components under two ways is (1:10)-(10:1). The oil agent has the technical effects that the effect of preventing and curing the rice banded sclerotial blight is improved, the operation is simple, labor and time are saved, no harm is caused for human body, and no pollution is caused for the ambient condition when the oil agent is applied; moreover, the utilization ratio of the effective component is improved, the labor intensity is reduced, the labor is saved, and the agricultural production cost is reduced.

The invention provides a projection device for projecting images on an object. The projection device comprises a sensing unit, a control unit, a light source module and an optical processing unit, wherein the sensing unit generates a sensing signal; the control unit is coupled to the sensing unit and generates a control signal according to the sensing signal; the light source module outputs polychromatic light and adjusts the polychromatic light according to the control signal; and the optical processing unit receives the polychromatic light output by the light source module to generate a projection image.

The invention relates to a modeling and verifying method of a laser gyroscope temperature compensation model. The method comprises 1, acquiring original data output by a laser gyroscope and multiple temperature information in different positions, building a laser gyroscope temperature compensation model and calculating a temperature compensation coefficient, and 2, building a verifying test weakly related to a modeling test on the laser gyroscope temperature compensation model and verifying compensation effects of the temperature compensation model through dual indexes such as the laser gyroscope zero-bias stability and zero-bias repeatability. The method realizes simultaneous examination and verification of two zero-bias key indexes such as zero-bias stability and zero-bias repeatability of the laser gyroscope after temperature compensation, has a more clear temperature compensation object and is conducive to further improvement of a temperature compensation precision. The method is conducive to improvement of a temperature coefficient precision of a temperature compensation model so that a temperature compensation precision and reliability are improved.

The invention relates to a method for quickly acquiring process information of a part. The method comprises the following steps of: designing the part by design staff and process staff through three-dimensional modeling software, adding geometric information, processing information and other information onto nodes of a feature tree of the part for storing different types of attribute information; simultaneously improving a template library by the process staff, performing detailed classification on the corresponding process information, detailing to each sub-node, then starting PDM (pulse density modulation) software, checking the part into a product data management system through corresponding intermediate software and simultaneously storing the process information of the part into a database of the information quick acquiring method so as to facilitate the extraction of the process information; and logging into a PDM system by manufacturing staff, entering a visual page, entering the part concerned by the manufacturing staff and selecting the node of the information concerned by the manufacturing staff so as to be capable of generating a three-dimensional process digital model and a process file of the part which only carries the information concerned by the manufacturing staff.

The invention relates to a low-noise amplifier with a multi-configurable bypass mode. The low-noise amplifier is characterized by comprising an amplification stage, an isolation stage, a load stage, an input matching stage, an output matching stage, and a multi-configurable bypass module, wherein the multi-configurable bypass module provides a low-impedance circuit from a radio frequency input end to a radio frequency output end, the low-impedance circuit and an LNA amplification circuit are mutually exclusive, namely at most only one of the two circuits is valid; the low-noise amplifier amplifies a radio frequency signal when the LNA enables, and directly outputs the radio frequency signal from the radio frequency output end when the bypass enables; when the low-impedance circuit and the LNA amplification circuit are closed, the LNA is in a closed mode; the amplification stage and the load stage are connected via the isolation stage, the input node of the multi-configurable bypass module is located at the input end of the input matching stage or between the output end of the input matching stage and the input end of the amplification stage, and the output point of the multi-configurable bypass module is located at the input end or output end of the output matching stage. The low-noise amplifier is improved in design efficiency and flexibility.

The invention discloses an enzymolysis preparation method of Cannabis sativa seed meal polypeptide with alpha-glucosidase inhibiting activity. The method includes: drying Cannabis sativa seed meal and crushing it into powder, adding water and stirring the mixture evenly, adjusting the pH to 8.0-10.5, adjusting the temperature to 30-80DEG C, performing stirring at a uniform speed for 0.5h-2h, conducting centrifugation and adjusting the pH of the supernatant to 3-6, thus obtaining protein precipitate; adding water to dissolve the protein, with the proportion being 2-7g:100mL, adjusting the pH to 7.0- 9.5, then adding alkaline protease, with the ratio of the protein weight to the enzyme activity being 0.1-5:1000, keeping the temperature at 50-75DEG C, and controlling the time at 1-4h; subjecting the enzymatic hydrolysate to separation and purification through macroporous adsorption resin and a Sephadex column, and carrying out collecting and drying, thus obtaining the alpha-glucosidase inhibiting active peptide powder. The Cannabis sativa seed meal polypeptide provided by the invention adds new sources for alpha-glucosidase inhibiting active substances, realizes full utilization of raw materials, and has the advantages of high product activity, convenient and feasible preparation process, and environmental protection, etc.

A carriage-mounted unit of a weft knitting machine enabling a reduction in size even if it has a large number of functions. A pair of stitch pressers (3, 4) are driven by the rotating motion of a motor (7) through one side drive mechanism (10) and the other side drive mechanism (20). The one side drive mechanism (10) and the other side drive mechanism (20) is provided with double-lift cams (11) and (21) to reduce a load on the motor (7). A cam drive mechanism (30) advances and retreats a bristle (5) being the other member to and from a trick gap part (6) so as to avoid its interference with the pair of stitch pressers (3, 4). Even if at least three of stitch pressers (3, 4) being a pair of members and the bristle (5) being the other member are so driven by the single motor (7) that each of these members is advanced to and retreated from the trick gap part (6) by the rotation of the motor (7), a part such as a groove cam plate reciprocating in the reciprocating direction of a carriage (2) is not provided in the unit, and therefore, the unit can be small-sized.

The invention discloses multi-functional clothes or trappings and a making method thereof. The clothes or trappings at least comprise a block of cloth provided with a separable connecting component which ensures different parts of the same block of the cloth or different blocks of the cloth can be recombined so as to change the shape or connection of the block of the cloth. The block of the cloth is also provided with an expansion part and an opening-closing mouth where opening-closing fasteners can be arranged. Through change by modes of interlocking, dismantling, expansion or opening-closing, etc., the invention can form clothes or trappings with different styles and functions.

The invention discloses an electric system low frequency oscillation aid decision making method based on operation mode sensitivity. On account of low frequency oscillation possibly existing in an electric system, the operation of constructing objective function is performed to the sensitivity index of the operation mode by applying a characteristic value, and a policy table for adjusting the operation mode of the system is obtained through optimizing calculation, so that low frequency oscillation aid decision making is performed. The method combines the sensitivity index with an active adjustment scheme, the unit with the larger sensitivity index is utilized to take part in output adjustment, and the unit with the smaller sensitivity index performs output balance, so that the purposes that the operation mode (active power) of the electric system is adjusted to improve small-signal stability of the system and restrict the low frequency oscillation are realized. The method is also suitable for reactive and voltage adjustment aid decision making in the low frequency according to the sensitivity index.

The invention relates to a sea cucumber and a ginseng and concretely provides a sea-cucumber-ginseng combination, which consists of the sea cucumber and the ginseng. The weight ratio of the sea cucumber and the ginseng is 0.1 to 10 to 0.1 to 10. The invention reasonably compounds the sea cucumber and the ginseng to ensure the mutual complementarity of the efficacies of the sea cucumber and the ginseng and at the same time avoid the problem that the yin-yang unbalance can be easily caused by the single use. The invention can develop serial products of sea-cucumber-ginseng cosmetic, health care product, medicinal product etc. based on sea-cucumber-ginseng freeze-dry powder or sea-cucumber-ginseng extract.