34 results about "Stability result" patented technology

The present invention is directed to a food emulsion composition, in the form of a nanoemulsion, comprising a food safe nonionic surfactant, alcohol co-solvent and an essential oil. The food emulsion composition can be used for a wide variety of food and beverage compositions, including but not limited to, dressings, marinades, sauces, condiments, beverages and the like. The encapsulated nanoemulsion flavorant compositions are beneficial because they make flavorants appear comparable with other compositions with twice the amount of flavorants which are non-encapsulated in an nanoemulsion. In addition, the nanoemulsion compositions better stability and show less signs of oxidation over time at room temperature than non-encapsulated formulations. Less oxidation and better stability results in lesser appearance of rancid aromas and bitter flavors.

The invention discloses a motor servo system error symbol integral robust adaptive control method comprising the following steps of establishing a motor position servo system model; designing an error symbol integral robust adaptive controller; based on the error symbol integral robust adaptive controller, conducting stability proving of the stability of the motor servo system through utilization of the Lyapunov stability theory; and using the Barbalat lemma to obtain the global asymptotic stability result of the system. According to the invention, an error symbol integral robust adaptive anti-interference controller based on parameter self-adaptation is proposed for the parameter uncertainty and unknown non-linear factors in a motor servo system. The parameter adaptive rate can effectively estimate unknown parameters in the system, and error symbol integral robust terms are adopted to overcome other uncertain nonlinear factors in the system, thereby ensuring the control precision in the motor servo system.

A method and an apparatus to control a data storage system, and more particularly, a method and an apparatus to restore the stability of a head in a data storage system by automatically applying a bias shock current to the head in accordance with the result of a thermal asperity detection (TAD) method, in case that a quality problem occurs in the manufacturing process and / or under severe user conditions. A thermal asperity detection (TAD) routine operates if BER is large or an ECC error occurs in a process of manufacturing a data storage system or in a user field. Thus, it is determined whether the instability of a head causes a quality problem, and if it is determined that the instability of the head causes the quality problem, a bias shock current is automatically applied to the head to restore the stability of the head. It is accurately determined whether the head is unstable if the data quality problem occurs in the process of manufacturing the data storage system or in the user field to automatically restore the stability of the head. As a result, the quality of the data storage system is improved in the manufacturing process thereof and in the market.

The invention discloses a device and a method for detecting the heat radiation performance stability of an automobile air conditioner heat exchanger. A constant-temperature water tank is connected with a water inlet of a high-temperature-resistance safe water pump through a water quantity regulation valve and is simultaneously connected with the outlet end of the heat exchanger, a water outlet of the water pump is connected with the inlet end of the heat exchanger through a flow rate meter, and a plurality of temperature sensors are placed around the heat exchanger and are connected with a data processing center after being connected with a data collecting system. A fan is placed right in front of the windward side of the heat exchanger. The constant-temperature water tank provides constant hot water, the water pump boosts the pressure of hot water, the temperature sensors test the temperature of the water and the air after and before passing through the heat exchanger, the flow rate meter measures the flow rate of the water while passing through the heat exchanger, the fan simulates the actual work state, the data collecting system converts signals collected by the temperature sensors and the flow rate meter into data, and the data processing center analyzes the collected data and obtains the heat transfer factor and the heat radiation performance stability results of the heat exchanger. The device and the method can be used for detecting the heat radiation performance stability of the automobile air conditioner heat exchanger, and the detection is reliable.

The present invention discloses one new kind of medicine composition, coenzyme Q10 emulsion, and its preparation process. The emulsion contains coenzyme Q10 as the medicinal component in 0.25 %, and medicinal supplementary material including oil phase 1-20 %, emulsifier 0.01-10 %, auxiliary emulsifier 0.001-5 %, other stabilizer 0-2 % and isoosmotic regulator 1-10 %. Its freeze dried preparation contains also freeze drying protector except water for injection. The present invention also provides freeze dried coenzyme Q10 emulsion and its recipe and preparation process. The coenzyme Q10 emulsion and its freeze dried preparation have high stability even in high temperature up to 40 deg.c and high illumination up to 4500LX+ / -500 conditions.

A feature extraction and clustering analysis method for a transient stability result of a power system comprises the following steps: 1) carrying out normalized preprocessing on transient stability feature data to cluster the data; 2) performing feature extraction and abnormal point judgment on the preprocessed data by using an improved clustering algorithm; 3) carrying out effectiveness evaluation on the clustering effect; And 4) analyzing the data features extracted from the transient stability in combination with geographic position information. The objective of the invention is to solve the technical problems of low normalization degree, untight connection between different parameters and slow network convergence in the existing method for extracting and clustering the transient stability result characteristics of the power system. System data features can be effectively and accurately extracted, and help is provided for electric power system planners to identify system responses.

The invention discloses an overall evaluation method for a normal-pressure storage tank containing a defect. The method is characterized by including the following steps: measuring a property, a sizeand a position of the defect on the storage tank; establishing a storage tank model of the defect in Ansys software according to a storage tank structure and the defect position, size and property; using the Ansys software for loading actual loads to calculate storage tank structure strength and a storage tank stress strength factor, and loading unit loads for stability calculation; and evaluatingcalculated and obtained storage tank structure strength, the storage tank stress strength factor and a stability result to comprehensively evaluate safety status of the storage tank. According to themethod, deficiencies and shortcomings on the aspect of current domestic storage tank safety evaluation standards are solved, the safety status of the storage tank is evaluated from multiple angles ofstructural mechanics, fracture mechanics and the like through a method of combining non-destructive earlier-stage detection and calculation of the finite-element software Ansys, and a calculation result has higher reliability.

A binder for a battery electrode comprising a vinyl fluoride-based copolymer. The vinyl fluoride-based copolymer preferably comprises about 25 to about 85 mol % vinyl fluoride and about 75 to about 15 mol % of at least one other fluorine-containing monomer. In a preferred embodiment, the binder comprises a mixture of at least two types of vinyl fluoride-based copolymers. In another embodiment the binder comprises a vinyl fluoride-based copolymer and at least one other fluorine-based polymer. The binder can be dispersed in water or organic solvent to form a paste for binding electrode materials to current collectors for battery electrode fabrication. Battery electrodes with improved adhesion strength and electrochemical stability result.

The invention discloses selenium-enriched bacillus bifidus micro-capsules. The selenium-enriched bacillus bifidus micro-capsules are prepared by adopting a method comprising the following steps: uniformly mixing a sodium alginate solution with selenium-enriched bacillus bifidus thallus and calcium carbonate powder so as to obtain a mixture; dropwise adding the mixture into vegetable oil containingan emulsifier, and carrying out stirring so as to obtain an emulsion; sequentially adding vegetable oil containing glacial acetic acid and an emulsifier solution into the emulsion, carrying out stirring, and allowing standing; and then, separating oil phase so as to obtain aqueous phase, and centrifuging the aqueous phase so as to obtain the selenium-enriched bacillus bifidus micro-capsules. By screening reagents, materials and dosage ratio adopted in micro-capsule preparing, coating and freeze-drying processes, embedding rate of the selenium-enriched bacillus bifidus micro-capsules disclosedby the invention are improved. The embedding rate of the selenium-enriched bacillus bifidus micro-capsules is up to 98% while the particle size is smaller than 200 microns and the freeze-drying survival rate is up to 85%. According to normal-temperature stability results, viable number of the selenium-enriched bacillus bifidus micro-capsules is still about 10<8> cfu / g within 180 days.

The invention discloses an aircraft holder stability testing device and an aircraft holder stability testing method based on a digital camera. A fixed bracket is arranged on the periphery of an aircraft, the top part of the aircraft is fixed to the lower end of a supporting rod through a universal joint and is positioned at the center of the fixed bracket, an oilcloth is horizontally arranged at the bottom surface of a frame of the fixed bracket, a logo image is arranged on the oilcloth, the digital camera is in rigid connection with a body of the aircraft, and the aircraft and the digital camera are connected with a PC upper computer on the ground through a picture data transmission system; and the digital camera is calibrated firstly, a relation between a pixel position of an image of the digital camera and a logo point position on the oilcloth is established, the fixed bracket and the oilcloth are kept in parallel to the ground horizontally in flight, exterior orientation parameters are obtained through processing picture data acquired in real time, and the stability result of an aircraft holder is obtained through variance calculation. The aircraft holder stability testing device adopts the scientific and effective aircraft holder stability testing method for detection stability of the aircraft holder, is simple and reasonable in structure, high in universality and convenient to disassemble, and can be suitable for various kinds of aircraft holders.

The invention provides an optical module. The optical module comprises a main control chip, and a laser transmitter and a laser receiver connected with the main control chip. The laser receiver comprises a PIN photoelectric diode, a trans-impedance amplifier of which trans-impedance is not less than 43Kohms, a lens and a shell. The PIN photoelectric diode is electrically connected with the trans-impedance amplifier. The PIN photoelectric diode, the trans-impedance amplifier and the lens are packaged in the shell through adoption of a transistor out-line mode. Antireflection film is pated on the lens. According to the optical module, high sensitivity remote transmission of a GPON (Gigabit-Capable Passive Optical Network) network is realized through combination of the PIN photoelectric diode and the high gain trans-impedance amplifier instead of an APD (Avalanche Photo Diode), therefore the cost is effectively reduced; various disadvantages such as high interference and low stability resulting from realizing the high sensitivity remote transmission by using the APD at present are solved; moreover, the antireflection film is pated on the lens of the laser receiver, therefore the reflection of the receiving light is reduced, the transmission light is increased, and the sensitivity is improved.

The invention discloses a Revit secondary development-based foundation pit engineering stability design method and system. The design method comprises the following steps of S1, extracting effective information of a model built in a Revit platform, and performing storage; S2, performing check calculation on the stability of the model through a certain mathematic model; and S3, feeding back a stability result obtained by analysis to a client terminal. By utilizing the foundation pit model built in Revit, the effective information in the model is automatically extracted; the stability of a foundation pit is automatically calculated; and a calculation document is generated, so that the document can be conveniently viewed and downloaded by a user. When the model is changed, the system can re-extract attribute information according to the re-modified model and re-calculate and generate the calculation document, so that the workload of drawing modification and re-calculation is greatly reduced and the working efficiency of designers is improved. Meanwhile, Revit gradually replaces CAD to become a new development direction of the building industry, and the development of a foundation pit stability calculation function in Revit also meets the development requirements of the age.

The analysis method provided by the invention comprises steps of At first, construct a wide-area power system mathematical model contain interval variable time delay, and then, a new augmented vectorand Lyapunov-Krasovskii Functionals: In the Construction of Lyapunov-Krasovskii functional, a new augmented variable is introduced into V1, the piecewise integral treatment is done in the integral interval of V2, and the triple integral term is introduced in the construction of V4. The above method can further reduce the conservativeness of the stability criterion of the system. In the meantime, what about Lyapunov-Wirtinger integral inequality, Extended integral inequality and convex combination are introduced in the derivative analysis of Krasovskii functional, which reduce the scaling error, reduce the conservatism of the stability results and enlarge the stable operating region of the system. On this basis, a feedback controller is designed. The existence condition of the controller isreduced to the form of strict linear matrix inequalities (LMIs). The delay stability interval of the system is improved, and the control effect is good.

The invention discloses a method for analyzing the shallow sliding stability of an expansive soil slope based on the complete softening strength, which comprises the following steps: on-the-spot investigation and investigation are carried out on the expansive soil slope to obtain soil sample and hydrogeological data; physical and mechanical parameters of expansive soil are obtained by strength test of expansive soil. Fracture depth and saturation line height are determined according to hydrogeological data. According to the physical and mechanical parameters, crack depth and infiltration lineheight, the seepage analysis model of expansive soil slope is established. The stability of the first landslide is analyzed by the seepage analysis model and the stability results are obtained. The seepage analysis model is used to simulate the tractive failure process and the results of landslide characteristics are obtained. Based on the analysis results of stability and landslide characteristics which can reflect the instability mechanism of expansive soil slope, the design and construction of expansive soil slope can be guided. Beneficial effect: The method can correctly describe the failure process of the actual expansive soil slope, and can reflect the instability mechanism of the expansive soil slope.

The invention discloses a friction-compensation-based adaptive neural network control method and device. The method comprises: establishing a motor position servo system model; designing an adaptive neural network controller based on friction compensation; according to the designed friction-compensation-based adaptive neural network controller, stability identification is carried out on the motorservo system based on a Lyapunov stability theory; and with the Barbalat lemma, a global asymptotic stability result of the system is obtained. According to the invention, modeling of the friction characteristics in the motor servo system is carried out by using a continuous friction model and the friction characteristics and other nonlinear disturbances in the motor servo system are compensated well by combining the self-learning ability of the neural network and the estimation ability of the parameter estimator, so that the system's stable tracking accuracy is improved substantially.

The invention discloses a method for testing the stability of an NVME hard drive sequence. The method comprises the following steps of creating a test platform and enabling the test platform to take NVME hard drives as storage hard drives; obtaining a sequence of the NVME hard drives, and generating a result file; judging whether a standard file is contained in a result file path or not; if the standard file is not contained, taking the result file as the standard file and performing storage; and if the standard file is contained, comparing the result file with the standard file, and displaying a hard drive sequence stability result. Compared with the prior art, a unified test method is provided, so that the manpower is reduced and the working efficiency is improved.

A binder for a battery electrode comprising a vinyl fluoride-based copolymer. The vinyl fluoride-based copolymer preferably comprises about 25 to about 85 mol% vinyl fluoride and about 75 to about 15 mol% of at least one other fluorine-containing monomer. In a preferred embodiment, the binder comprises a mixture of at least two types of vinyl fluoride-based copolymers. In another embodiment the binder comprises a vinyl fluoride-based copolymer and at least one other fluorine-based polymer. The binder can be dispersed in water or organic solvent to form a paste for binding electrode materials to current collectors for battery electrode fabrication. Battery electrodes with improved adhesion strength and electrochemical stability result.

The invention discloses a method for preparing a composite thermal insulation mortar based on a shaped phase change material. Specifically, firstly, the shaped phase change material is prepared by using erythritol and expanded graphite as raw materials; cement, silica fume, rubber powder, basalt fiber, Sodium polyacrylate is mixed and added into a mixer for mixing and stirring, and then the above-prepared shaped phase change material and cellulose ether are added, and stirring and mixing are continued to obtain a composite thermal insulation mortar. The method is simple to operate, and the prepared shaped phase change material has good stability. The thermal insulation mortar prepared by the invention has good mechanical properties, good heat storage and thermal insulation performance, and low preparation cost.

The expression and subcellular localization of peripheral-type benzodiazepine receptors (PBR) is shown in this application to correlate with the metastatic potential of cells, and increased cell proliferation. Inhibition of PBR expression, function or stability results in a decrease in cell proliferation. Compositions and methods for regulating and / or monitoring PBR and its expression are useful for the detection, diagnosis, prognosis and treatment of solid tumors, in particular, breast cancer.

The invention provides a method for measuring the stability of a phase-locked loop (PLL) in a central processing unit via a frequency meter. The method comprises the steps as follows: a central processing unit outputs an oscillation excitation signal to a crystal circuit; the crystal circuit generates a clock signal according to the oscillation excitation signal; an internal loop outputs a clock signal that does not pass through the phase-locked loop via an output port on the central processing unit; the frequency meter is used for receiving the clock signal which does not pass through the phase-locked loop and performing a clock precision test to acquire a first test result; the internal loop outputs a clock signal that passes through the phase-locked loop; the frequency meter is used forreceiving the clock signal that passes through the phase-locked loop and performing the clock precision test to acquire a second test result; and a first test result and a second test result are compared according to a preset strategy to acquire a stability result of the phase-locked loop. The method provided by the invention has the beneficial effects that an expensive oscilloscope does not needto be purchased, the operation is simple, the affect of crystals can be avoided, and the accurate precision of the PLL can be measured.

Display control method and apparatus for multimedia data are provided. The method includes: acquiring a ratio of a total real display count to a total planning display count corresponding to each display area within a first time period, determining the ratio as a data display rate of each display area within the first time period, and controlling, according to the data display rate of each display area within the first time period, multimedia data displayed in each display area. A data display rate of each display area within a first time period is acquired, and multimedia data displayed in each display area is controlled according to the data display rate of each display area within the first time period, so that stability of accuracy of a control result is improved, and a control effect is enhanced.

The embodiment of the invention discloses a wetland ecosystem stability evaluation method and system. The method comprises the following steps: providing a plurality of wetland evaluation indexes of atarget wetland and a judgment matrix for the plurality of wetland evaluation indexes; obtaining a plurality of index weights according to the plurality of evaluation indexes and the judgment matrix;acquiring a plurality of index data of the target wetland; obtaining a plurality of stability coefficients according to the plurality of index data and a preset index data and stability coefficient corresponding relation table; obtaining a stability score of the target wetland according to the plurality of index weights and the plurality of stability coefficients; and obtaining a stability resultof the target wetland according to the stability score and a preset stability score-stability condition corresponding relation table. The method has the advantage that a stability result can be obtained according to the characteristics of the wetland.

The invention discloses an aircraft holder stability testing device and an aircraft holder stability testing method based on a digital camera. A fixed bracket is arranged on the periphery of an aircraft, the top part of the aircraft is fixed to the lower end of a supporting rod through a universal joint and is positioned at the center of the fixed bracket, an oilcloth is horizontally arranged at the bottom surface of a frame of the fixed bracket, a logo image is arranged on the oilcloth, the digital camera is in rigid connection with a body of the aircraft, and the aircraft and the digital camera are connected with a PC upper computer on the ground through a picture data transmission system; and the digital camera is calibrated firstly, a relation between a pixel position of an image of the digital camera and a logo point position on the oilcloth is established, the fixed bracket and the oilcloth are kept in parallel to the ground horizontally in flight, exterior orientation parameters are obtained through processing picture data acquired in real time, and the stability result of an aircraft holder is obtained through variance calculation. The aircraft holder stability testing device adopts the scientific and effective aircraft holder stability testing method for detection stability of the aircraft holder, is simple and reasonable in structure, high in universality and convenient to disassemble, and can be suitable for various kinds of aircraft holders.

The invention discloses an indirect adaptive robust control method for an electro-hydrostatic actuator. The method comprises the following steps: firstly, establishing a mathematical model of an electro-hydrostatic actuator system; and designing a mathematical model of an electro-hydrostatic actuator system, designing an indirect adaptive robust controller according to the mathematical model of the electro-hydrostatic actuator system, and finally carrying out stability proving on the indirect adaptive robust controller of the electro-hydrostatic actuator system by using a Lyapunov stability theory to obtain a bounded stability result of the system. On-line estimation can be quickly realized under the condition that a certain parameter or some parameters of a system model are unknown.

A genetic automatic fuzzy clustering analysis-based templateless biological secret key generating method comprises the following steps of (1) acquiring a plurality of biological feature samples from a user, calculating the statistics feature value of each biological feature sample and applying a genetic automatic fuzzy clustering algorithm to perform fuzzy clustering analysis on the data; (2) calculating the average fuzzy membership of each feature assembly and each cluster by a fuzzy clustering result according to a fuzzy clustering result, determining the stability of the feature assemblies and measuring the stability of the feature assemblies by using the obtained membership; (3) selecting of the feature assembly: selecting feature assembly with higher stability to generate a secret key based on the stability result of the feature assembly obtained from the last step; (4) generating of the biological secret key: after the feature assembly of each user is well determined, for the clustering result on each feature assembly, marking each cluster with one secret key, determining the corresponding attribution cluster and secret position of each selected feature assembly, and generating the secret key for each user by all the key positions obtained by combining.

The invention discloses a transformer partial discharge detection system, which includes a data acquisition module, a signal generator, a signal conditioning device, a filter unit, a resonant reactor, and a variable frequency power supply. Composed of impedance and coupling capacitors, the data acquisition module, signal generator, signal conditioning device, filter unit, and resonant reactor are all connected to the variable frequency power supply. By designing the partial discharge detection system of the transformer into this structure, the response speed is fast , Strong reliability and good stability.