439 results about "Physical field" patented technology

An arrangement includes a first computer having a first operating system, the first computer having a memory containing software derived from field controller software executed on physical field controllers of a building control system. The physical field controllers employ a second operating system. The software further contains an operating system abstraction layer operable to convert at least some operating system calls of the field controller software to corresponding calls in the first operating system.

The invention relates to an in-situ testing machine for the microcosmic performance for a multi-load and multi-physical-field coupling material, belonging to the technical field of material mechanics property testing. The in-situ testing machine comprises a micro/nanometer-precision driving/transmission module, a 'mechanical-electric-thermal-magnetic' loading module and a control module, is integrated with a high-field-depth 3D (three dimensional) micro-imaging lens, a Raman spectrometer and a visual in-situ monitoring module and is capable of dynamically monitoring deformational behaviors, damage mechanisms and performance evolvement rules of the material in a loading process. The in-situ testing machine has the advantages that the whole structure is compact, and the space layout is saved; the loads of four manners including 'stretching/compression-torsion-bending-indentation' can be singly loaded, two or more loads can be combined to be loaded as well, and externally-applied physical fields such as heat, electricity, magnetism and the like can be combined to maximally simulate the real working conditions of components of the material, and effective measures and methods are provided for testing the micromechanical performance of the material under a service-approximating condition.

The invention provides a load-type monoatomic catalyst. The catalyst is formed by uniformly loading monodispersed metal atoms on the surface of a nano substrate material. A preparation method thereofcomprises the following steps: in an electrolyte solution containing metal salt, performing electrochemical deposition by using a three-electrode system, using a glassy carbon electrode loaded with the nano substrate material as a working electrode, using a graphite rod as a counter electrode, using a silver/silver chloride electrode as a reference electrode, performing linear volt-ampere scanning, enabling the metal atoms to be monodispersely and uniformly deposited on the nano substrate material, to obtain the load-type monoatomic catalyst. The load-type monoatomic catalyst is capable of, based on electro-deposition, constructing a monoatomic structure, through an electro-deposition method, rapidly, efficiently, and controllably depositing single atoms, and realizing deposition of positive and negative electrodes, and the obtained load-type monoatomic catalyst has important significance to a general application in the catalytic and particle physical field.

The invention discloses a testing device and a testing device method for simulating collapse of tunnel surrounding rock under conditions of rainfall and underground water seepage. The testing device comprises a model testing box, a rainfall adjustable simulating system, an underground water seepage simulating system, an underground water supplying system, a water content testing system, a stress monitoring system, a digital radiography noncontact measuring system and an optical fiber bragg grating displacement monitoring system. By simulating a progressive failure process of tunnel weak broken surrounding rock under the action of seepage of surface water and underground water, mechanical behaviors of crushing the surrounding rock under different rainfall conditions and different underground water seepage path conditions are quantitatively researched. By obtaining multiple-physical field information in a tunnel surrounding rock collapse process, multi-information features in different evolutionary phases and internal links of information of all fields of the collapse are analyzed, a progressive failure process and fracture morphology and ranges of the tunnel weak broken surrounding rock under different factors are determined, and the effective basis is provided for disclosing a progressive failure principle and a dynamic pressure arch effect of the weak broken surrounding rock under conditions of rainfall and underground water seepage.

The invention relates to a combined load mode mechanical-electrical and thermal-magnetic coupling material performance in-situ test instrument and method, and belongs to the field of precise scientific instruments. The test instrument comprises three parts: namely a combined load-multi-physical field loading test platform, an in-situ monitoring platform and a vibration-isolating base, wherein the vibration-isolating base is mainly used for supporting the combined load-multi-physical field loading test platform and the in-situ monitoring platform, and provides a positioning service for installation of the platforms and effective vibration isolating treatment for various precise driving loading elements, detecting elements and in-situ monitoring elements; the in-situ monitoring platform realizes real-time dynamic and in-situ monitoring on micro deformation, injury mechanism, microstructure changes and property evolution of a material sample under the combined load condition by precisely adjusting the position and posture of various monitoring modules. The combined load mode mechanical-electrical and thermal-magnetic coupling material performance in-situ test instrument has the following advantages: the structure is miniaturized and lightened in weight, and the instrument body can be placed in an optionally equipped vacuum cavity, so that testing environments like low pressure, vacuum and inert gases can be provided for the material sample to be tested, and the practicability is high.

The invention discloses a natural gas hydrate exploitation multi-physical field evolution simulation test device. The natural gas hydrate exploitation multi-physical field evolution simulation test device comprises a reactor; the reactor is arranged in a temperature control module; the reactor is connected with a liquid supply module, a gas supply module, a back pressure control module, a confining pressure loading module and a data measurement and acquisition module. The invention also discloses a natural gas hydrate exploitation multi-physical field evolution simulation test method. According to the method, an electrical resistance tomography technology is adopted to perform real-time measurement on material contents in sediments especially the saturation of hydrates; real-time measurement is performed on the volume change of the sediments based on the volume change of confining pressure fluid; and the experimental simulation work of temperature field, flow field and displacement field evolutionary processes in hydrate depressurization exploitation can be realized based on experimental data such as temperature, pore pressure and flow rate (gas generation and water generation rate).

In order to design on-chip interconnect structures in a flexible way, a CAD approach is advocated in three dimensions, describing high frequency effects such as current redistribution due to the skin-effect or eddy currents and the occurrence of slow-wave modes. The electromagnetic environment is described by a scalar electric potential and a magnetic vector potential. These potentials are not uniquely defined, and in order to obtain a consistent discretization scheme, a gauge-transformation field is introduced. The displacement current is taken into account to describe current redistribution and a small-signal analysis solution scheme is proposed based upon existing techniques for static fields in semiconductors. In addition methods and apparatus for refining the mesh used for numerical analysis is described.

The present invention discloses an object relational mapping method and device as well as a processor. According to the method, when data in a database table are required to be queried, an alias name of the database table corresponding to a current query and a physical field of the database table are determined according to received database operation statements and query parameters, and a corresponding table connection relationship is constructed; and then corresponding object data are returned according to received object operation data and a preset mapping relationship. The method achieves object relational mapping, can be applied to a complicated data model and is used for solving the problem of confused coding in the existing hard coding technology; in addition, according to the object relational mapping method disclosed by the present invention, current query conditions and table connection relationships can be assembled according to object data and mapping files, so that the flexibility is high, and the degree of multiplexing is high.

The invention provides to a preparation method of cold soluble instant health food of grains, vegetables and fruits and relates to a novel preparation method of food with complete nutrients and high bioavailability, belonging to the technical field of modern nutritious food preparation. The method comprises the following steps: carrying out nonthermal physical field energy conservation dehydrateddesiccation on fresh plant source food raw materials, namely grains, vegetables and fruits which are unpolluted, green and safe; smashing the raw materials to 80-120 meshes; evenly compounding and mixing micronutrient functional factors with 10%-60% of corn, 10%-50% of vegetables and 10%-40% of fruits in the weight ratio, so as to prepare the all natural nutritious food of grains, vegetables and fruits which can be taken by mixed with cool boiling water. The invention mutually mixes the different grains, vegetables and fruits which are processed, so that the cold soluble instant product contains complete nutrients such as dietary fiber, protein, fat, vitamine, mineral composition, beta-carotene, flavone, natural coloring matter and the like, has high utilization ratio of nutritious components and good taste, and belongs to a novel health food.

The invention relates to a continuous casting method of large-length hollow ductile cast iron sections and a method for arcing the hollow ductile cast iron sections after local continuous heating. Thesection comprises the following components by weight percent: 3.4-3.6% of C, 2.8-3.2% of Si, 0.40-0.60% of Mn, S less than or equal to 0.1%, P less than or equal to 0.1% and the balance Fe. Molten iron is subjected to shaping and continuous casting under multiple physical fields to become the hollow sections. The molten iron in heat preserving furnaces is separated from dross, sand and gas in twoways, thus completely solving the defects of dross inclusion, sand inclusion and pores; liquid column cores in a crystallizer carry out continual feeding on condensing tube shells, thus eliminating the possibility of shrinkage porosity inside the tube walls, obtaining highly dense cast structure of (ferritic matrix+spherical graphite) and eliminating crack initiation origins in thermoplastic deformation to be carried out later. The intense cooling speed in the crystallizer enables the volumes of eutectic cells to be only 1/15-1/25 of the volumes of traditional sand mould casts. The density ofthe graphite balls reaches around 500/mm<2>. In plastic deformation, the micro slip orientation is increased and the ductility is enhanced, therefore, the hollow cast iron sections can be arced by medium frequency induction heating and bending.

The invention relates to an unsteady cavitation flow-excited vibration multi-field synchronous measurement system for a water tunnel experiment and belongs to the ship and underwater vehicle engineering and water conservancy and hydropower engineering technology field. The system is composed of an experimental section, an experimental model, a high-speed camera, a synchronous trigger switch, a laser Doppler vibration meter, a data acquisition instrument, a data processing system/computer and display assembly and a light source. According to the system of the invention, rising edge voltage signals are generated through the synchronous trigger switch, trigger signals are controlled by using the voltage signals, and therefore, the signal acquisition starting instructions of the high-speed camera and the laser Doppler vibration meter are controlled quantitatively and precisely, and the quantitative and accurate synchronous measurement of an unsteady cavitation flow field and a structure field can be realized; and data obtained through multi-physical field synchronous acquisition are subjected to preprocessing, time-domain analysis, frequency-domain analysis and time-frequency analysis,and therefore, reliable analysis experimental data can be provided for the study of fluid-structure interaction characteristics.

The invention discloses a method for repairing micro-defects inside metal materials which can repair the micro-defects inside the metal materials so as to improve the performance of the metal materials without affecting the thermal deformation of the metal materials. The method comprises the following steps: putting the metal material to be repaired in an external physical field excitation device capable of generating a pulsed magnetic field and a pulsed electric field, and selecting the appropriate field treatment process for processing according to the magnetic property of the metal material and the configuration type of the microscopic defect inside the substrate. In this way, the in-situ repair of internal defects of metal materials can be realized by pulsed magnetic field and pulsed electric field induction. Therefore, the plastic toughness of metal materials is improved, the strength of materials can be increased, the abrasion resistance of materials can be greatly improved, the initiation of microcracks can be restrained and expansion of the microcracks can be delayed, and the fatigue life of the materials can be significantly prolonged. In addition, the whole repair process will not cause significant temperature rise and thermal deformation of the metal material.

An irregular mesh mapping method used in electromagnetic field-flow field-temperature field coupling calculation comprises the following steps of 1 establishing a flow field-temperature field calculation model; 2 reading node coordinate values of discrete units of the model; 3 re-establishing a geometric model of a research object in the electromagnetic field calculation, performing model discrete to form a triangular finite element mesh and performing electromagnetic field value calculation; 4 mapping power consumption onto units in a temperature field; 5 obtaining a mapping correction factor; using power consumption densities of the units as loads to be loaded into the temperature field for solution and calculation, and obtaining a temperature result; accordingly obtaining the power consumptions of the units in the temperature field. By adopting the irregular mesh mapping method used in the electromagnetic field-flow field-temperature field coupling calculation, data transfer of different types of meshes can be adopted in different physical fields, the mesh number is greatly decreased, and the calculation time and the calculation accuracy are shortened and improved.

The invention discloses a brake friction, heating and vibration coupling test table frame which comprises a base. A first support, a second support, a third support, a fourth support, a fifth support and a brake caliper assembly installing support are sequentially arranged on the base from left to right. Each component of a power driving device is respectively arranged on the first support, the second support, the third support, the fourth support and the fifth support, a brake of a braking device is arranged on the brake caliper assembly installing support, the output end of the power driving device is connected with the input end of the braking device, sensor parts of a collecting measuring device are respectively arranged on the power driving device and the brake of the braking device, and the collecting measuring device is connected with a controller. A test table is compact in layout and easy to measure and control, an advanced testing technology and a control method can be fully utilized, test working conditions are convenient and accurate, and measurement of a brake friction, heating and vibration physical field is targeted.

The invention discloses an electromagnetic flexible composite fused deposition direct preparation forming method for a gradient part. The method comprises the following steps of 1, building a model, wherein functionally graded material CAD/CAM software is applied to build a geometric three-dimensional part model, and material gradient distribution and tissue gradient distribution are determined in the geometric three-dimensional model to form a space comprehensive model; 2, cutting the model into slices and generating numerical control codes, wherein layering and slicing processing is performed on the space comprehensive model formed in the step 1, and numerical control codes are generated; 3, obtaining a reverse solution for electromagnetic characteristics, wherein the reverse solution for externally-added magnetic pole distribution and exciting current characteristics is obtained; 4, performing fused deposition formation, wherein magnetic poles and/or electromagnetic coils are arranged, and fused deposition formation is performed layer by layer. According to the electromagnetic flexible composite fused deposition direct preparation forming method, the CAD/CAM software is adopted for determining the part organization and the material gradient distribution; with the combination of electricity-magnetism-heating power multi-physical field coupling control, integrated manufacturing of the gradient organization and gradient material part shape and microstructure is achieved.

The invention belongs to the technical field of motor manufacture, and relates to a three degree of freedom spherical motor with multiple physical field mixing driving. The spherical motor comprises a supporting part, a stator and a spherical rotor, wherein the supporting part comprises a base and a spherical stator casing fixed on the base. The top end of the stator casing is provided with a circular hole. One layer or more than one layer of winding installation holes is uniformly distributed on the upper sphere of the stator casing in the direction parallel to the equator. The stator comprises a stator winding and an ultrasonic vibrator, wherein the stator winding consists of a winging shaft and a coil. The diameter of the winding shaft is slightly smaller than the inner diameter of the winding installation hole, and the top of the winding shaft penetrates through a compression spring and is arranged in the winding installation hole. The ultrasonic vibrator is fixed on the base, and the upper end of the ultrasonic vibrator is in an inner cone shape, and is matched with the spherical rotor. The spherical rotor is uniformly embedded in a multilayer permanent magnet pole along the direction parallel to the equator. The invention has reliable structure, improves the torque characteristic of the motor, and enhances the design flexibility of the motor control system.

The invention relates to jet devices for extracting oil from wells and intensifying the oil influx rate. An output cone, a packer and a jet pump are mounted on a tubing string. One or several active nozzles are arranged inside the pump body, and a stepped pass channel provided with a mounting seat for a pressure-sealing unit which is disposed between stages and several channels for supplying a pumped-out medium are embodied inside said pump body. The axes of the nozzles are disposed in a parallel position with respect to the axis of the pass channel at a certain distance therefrom. The inventive device is provided with a radiator and a receiver-transducer of physical fields mounted on a cable in such a way that it is replaceable by other instruments. Said cable passes through the axial channel of the sealing unit which is arranged in such a way that it is successively replaceable by functional inserts such as a testing and depression inserts etc. Said inserts are provided with mechanisms for bringing them to the pump body and for extraction therefrom. Mounting seats for back valves and plugs are embodied in the lower part of the channels for supplying the pumped-out medium. The dimension ratios of the elements of the inventive device are also disclosed. The aim of the invention is to optimise the dimensions of the elements of said device and increase the performance thereof.

The invention discloses a hypersonic aerocraft leading edge fluid-heat-solid integrated calculation method, and belongs to the field of aerocraft pneumatic calculation. For solving the problem of complex coupling of structure heat transfer and hypersonic speed flow aerodynamic heating, the method avoids the complex data exchange and calculation amount caused by flow field and structure coupling alternate iteration calculation performed within a time domain through a traditional aerodynamic heating/structure heat transfer coupling solving method, the flow field and the structure are adopted asa physical field, and a uniform control equation is adopted. Physical parameters of a fluid and solid interface are defined again, a finite volume method is performed on a full physical field for spatial dispersion, and hidden time iteration is adopted for time stepping. Compared with a coupling algorithm, the method needs no extra data exchange or coupling strategy, the calculation result and anexperiment value are closer, the calculation amount and the grid dependency are smaller, and the better stability and calculation precision are achieved.

Methods, systems, and articles of manufacture for enhancing abstract queries by utilizing conditional modifiers with logical fields are provided. Conditional modifiers allow for the referencing of multiple physical fields via a single logical field. Further, conditional modifiers facilitate the ability to specify, on an instance by instance basis, which physical field or combination of physical fields a particular logical field should reference.

The invention discloses a multi-physical field coupling simulation method and a multi-physical field coupling simulation system for a submarine high-pressure blow-off pipeline system. The method comprises the steps of establishing a three-dimensional geometrical model of a high-pressure blow-off system pipeline; performing finite element mesh division and boundary condition setting on the three-dimensional geometrical model of the high pressure blow-off system pipeline; performing fluid mechanic simulation calculation to obtain flow field characteristics in the high-pressure blow-off system pipeline and flow-induced noise characteristics in the blow-off system; performing simulation analysis on a fluid-solid coupling problem of the high-pressure blow-off system pipeline based on a multi-physical field fluid-solid coupling simulation calculation method; performing transient acoustic boundary element simulation calculation by use of an acoustic simulation calculation method based on a fluid-solid coupling simulation calculation result; and performing qualitative and quantitative analysis on flow field noises, flow-induced noises and vibration noises of the system pipeline and a watertank based on the multi-physical field fluid-solid-sound coupling simulation method. Through the multi-physical field coupling simulation means, the invention provides a noise prediction system for the submarine high-pressure blow-off pipeline system.

A method for modifying a substrate containing a natural polymeric material to improve its interaction with other materials, the method comprising: A) Treating the substrate containing the natural polymeric material with a modifying agent selected from the group consisting of organo-functional coupling agents and multi-functional amine containing organic compounds; and B) optionally exposing the substrate containing natural polymeric material with one or more treatments selected from the group consisting of: i) subjecting the substrate to extraction with a solvent to reduce the content of extractable materials associated with the natural polymeric material prior to or during treatment with the modifying agent; ii) treatment with a physical field selected from static physical fields, high-frequency alternating physical fields and combinations of two or more thereof either prior to, during or after treatment with the modifying agent; and iii) oxidation of at least part of the natural polymeric material prior to or during treatment with the modifying agent.

Provided is a ceramic/ceramic connection method for regulating and controlling a middle solder layer through multi-physical-field coupling. According to the ceramic/ceramic connection method, a heat source is adopted to fuse solder or solder and a part of base metal, meanwhile physical fields are additionally applied, the solder is a non-crystalline material or a mixed material of the non-crystalline material and a reinforcement phase, an outer heating source is acetylene flame or oxyhydrogen flame, electric arcs, laser, electron beams or a resistance heating method for melting metal through heat conduction and heat radiation is adopted, and the additionally-applied physical fields are one or more than two of ultrasonic waves, magnetic fields and electric fields which are simultaneously applied. The ceramic/ceramic connection method has the advantages of effectively controlling interface reaction, strengthening liquid metal flowing, regulating and controlling weld joint substance distribution, regulating the metallurgical welding process, controlling a weld joint organization structure, eliminating weld joint defects, reducing residual waste heat stress, improving weld joint toughness, promoting interface bonding, improving the mechanical property of welded joints, decreasing the material using amount and reducing environmental pollution through the additionally-applied physical fields and being widely applied to the fields of aviation, aerospace, electronic devices, fuel cells and the like.

The invention discloses an automatic magnetic field compensation device. The automatic magnetic field compensation device comprises a first magnetic reluctance chip, a second magnetic reluctance chip, a third magnetic reluctance chip and a fourth magnetic reluctance chip which are used for measuring the magnetic field value in an outside environment and further comprises a fixing unit, a support unit, a collection unit, a feedback unit and a rotation unit as well as three-dimensional Helmholtz coils, three-dimensional one-order gradient coil and a two-order gradient coil unit which are used for shimming. The invention further discloses an automatic magnetic field compensation method. The magnetic field compensation range is large, the device is simple in structure and convenient to operate, and the device and method are applicable to physical field research based on low-magnetic-field environment signal detection and atom magnetometer and have great significance.