158 results about "Phase variable" patented technology

There is provided an electro-optical component comprising (a) a substrate, (b) a phase-variable element carried on the substrate, (c) a memory carried on the substrate for storing data representative of a phase state for the phase-variable element; and (d) a controller carried on the substrate, for utilizing the data and setting the phase state for the element. There is also provided an electro-optical component comprising (a) a substrate, (b) a phase-variable element carried on the substrate, and (c) a circuit carried on the substrate for computing and applying a phase state for the phase-variable element.

The invention discloses a phase-variable energy-storage fiber and relative production, which comprises that using cellulose slurry to prepare cellulose adhesive solution, to be mixed with phase-variable wax fused solution to prepare spinning dope to obtain the phase-variable energy-saving adhesive fiber. The functional fiber is mainly formed by cellulose and wax, while the wax content is 10-40% (relative to the cellulose content). And the inventive production has simple process, significantly reduced phase-variable material loss in the process, improve the phase-variable material content and improve the phase-variable energy-saving function and mechanical function.

Production of porous adsorptive inorganic phase-variable composite material with film-coated is efficient. The composite material consists of inorganic hydrous salt 73-98 proportion, agent for preventing phase separation 0.3-3 proportion, and sub-cool resisting agent 0.5-2 proportion. The process is carried out by combing agent for preventing phase separation, mixed absorbing it with mineral porous material in proportion of 1:0.1-1, breaking it into grain with granular diameter=0.1mm-20um, and coating granular phase-variable material by film-forming agent to obtain the final product. It is non-volatile, has stable performance, better heat conductivity and mechanical strength.

RFID data signals from RFID tags may be recovered by determining the probabilities of transitions between data states between a series of a pairs of signal samples using a set of predetermined probabilities related to data, timing, baud rate and / or phase variables affecting the received signal and processing those determined probabilities to determine the sequence of such transitions that has the highest probability of occurrence. A second set of predetermined probabilities related to transitions in the opposite direction may be used to sequence in a reverse direction. The determination of the sequence representing the RFID tag data may be iterated in both directions until further iterations don't change the determined probabilities.

The invention relates to a phase-variable energy storage ultra-fine composite fiber, relative production and application, wherein said fiber can be formed by polymer carrier and phase-variable material in different quality ratio; said phase-variable material is distributed inside the fiber or on the surface of fiber; the phase-variable material on the surface of fiber is crosslinked to the polymer carrier via crosslinker, to be fixed on the surface, to obtain the phase-variable energy-storage ultra-fine composite fiber. The invention can keep the shape of fiber before and after phase change, without phase separation. And it has low cost, simple production and reliable process, to be used in biological and medical material, etc.

A phase-variable material micro-capsule as temperature-adjusting functional material, an intelligent temperature-adjusting viscose fiber and its production are disclosed. Dry breakdown strength is >=1.42CN / dtex, wet breakdown strength is>=0.64CN / dtex; It consists of cellulose 84.7-92.75wt%, micro-capsule 5-30wt% and water-content 7-15wt% and oil solution 0.15-0.30wt%. The fiber coagulation heat-liberation enthalpy valueDeltaH>=1.0J / g, melt heat-adsorption enthalpy value DeltaH>=1.0J / g. It is non-toxic, has better adaptability and no harm.

Provided is a wavelength variable laser device wherein an SOA is simplified. The wavelength variable laser device includes: an optical filter formed on a PLC; an SOA that supplies light to the optical filter; a light reflecting section that returns the light transmitted through the optical filter to the SOA via the optical filter; optical waveguides which are formed on the PLC and connect the SOA, the optical filter, and the light reflecting section; a wavelength variable section that changes a wavelength of the light transmitting through the optical filter; and a phase variable section that changes a phase of the light propagated on the optical waveguides.

The invention provides a new method for precisely measuring optical fiber length by adoption of a vector network analyzer. The vector network analyzer is introduced, the phase zero making technology is combined, and therefore the defects that a back scattering method is poor in measuring precision, many in interference factor of a pulse method, short in measuring distance and the like are overcome, and the shortcomings that a traditional phase shifting method is narrow in frequency measuring range of a phase meter and poor in phase measuring stability are overcome; in the long-distance transmission of optical fibers, due to widening of optical pulses caused by optical fiber dispersion, time amount of optical pulse delay is replaced with the phase variable quantity generated by measuring optical signals in transmission in the optical fibers, the accuracy value of the optical fiber length is calculated, and therefore the influence of the optical fiber dispersion on a measuring result of the optical fiber length is reduced.

The invention relates to a processing technology of noodles with four-phase variable-temperature drying method. The processing steps are completely finished in a chain and track type drying room. The chain and track type drying room comprises a cold-blast air zone, a drying zone, a main drying zone and a drying finishing zone, and the producing steps comprise (1) cold-blast, (2) rising temperature drying, (3) high-temperature main drying and (4) falling temperature drying. The invention has the characteristics of low temperature, low speed, steady process, easy mastery, and the like, and dried noodles produced by the process has the advantages of flatness, smoothness, good noodle shape, good product quality and no crisp part. By adopting the different speeds and temperatures of air flows in every zone of the drying room, the invention reasonably achieves the goal of fluent drying, realizes the same speed of inward and outward diffusion of noodles, consequently improves the drying effect, effectively prevents noodles from crazing and getting crisp, ensures the noodle quality and saves the energy at the same time.

The invention discloses a pulse heat tube radiating plate which uses the phase-variable fluid of micro capsule as work medium, comprising a base plate (1) and a cover plate (4) to form a sealed chamber. The base plate (1) is arranged with a curved groove (2) with at least two bended heads and the section diameter of groove is smaller than 2mm. the groove (2) contains the phase-variable fluid medium, while the groove (2) is communicated with the inlet (3) of base plate (1). The fluid medium is FS-39E micro capsule phase-variable material. The invention can avoid movable element and noise while it is driven by waste heat completely.

Provided are large area and uniform VHF plasma CVD apparatus and method wherein a plasma generating source constitutes the VHF plasma CVD apparatus for manufacturing a tandem-type thin film silicon solar cell, and influences of standing waves, generation of harmful plasma other than between a pair of electrodes and supply power consumption other than between the pair of electrodes are suppressed. First and second power feed points are arranged on an electrode at positions facing each other. A distance between the power feed points is set at an integral multiple of a half of the wavelength of the using power, and a pulse power separated in terms of time is supplied. The pulse power is outputted from two phase-variable double output high frequency power supplies which can perform pulse modulation. Thus, a first standing wave wherein the anti-node position matches with positions of the first and the second power feed points, and a second standing wave wherein the node position matches with positions of the first and the second power feed points are alternately generated in terms of time.

The present invention is a solid-liquid two-phase mass flow simulation system for a wellbore with a complex structure, which includes a simulated wellbore, which is composed of a plurality of fixed and connected pipes; the inlet end of the simulated wellbore is connected with a mainstream solid-liquid two-phase fluid supply device, The outlet end of the simulated wellbore is connected with a solid-liquid two-phase fluid separation device; the simulated wellbore is sequentially set as an inlet section, an experimental measurement section and an outlet section from the inlet end to the outlet end; the pipe body of the experimental measurement section is composed of an inner pipe and an outer casing Assuming the structure, a ring-shaped airtight cavity is formed between the inner tube and the outer tube. There are multiple seepage holes evenly distributed on the tube wall of the inner tube, and multiple inflow holes are arranged on the tube wall of the outer tube. The multiple inflow holes are connected with inflow holes. A solid-liquid two-phase fluid supply device; the inlet pipeline, outlet pipeline and inflow pipeline are equipped with fluid flow and pressure collection and processing devices. Therefore, the simulation system can be used in the laboratory to further study the whole process of sand particles entering the pipeline with the production fluid and being carried to the wellhead in the development of unconsolidated sandstone reservoirs.

The invention discloses a preparation method for a high stable paraffin melamine resin microcapsule emulsion which can be used for phase variable temperature. The method comprises the following steps: preparing a paraffin melamine resin microcapsule product by adopting an in-situ polymerization method with paraffin as a phase transition core material and melamine resin as a capsule wall material; directly adding a compound emulsifier and deionized water to the microcapsule product suspension to obtain a mixed liquor, or adding a compound emulsifier and deionized water to the microcapsule product after the microcapsule product is filtrated and dried to obtain a mixed liquor; and stirring and dispersing the mixed liquor to prepare the paraffin melamine resin microcapsule phase transition material emulsion. Particle size of the paraffin melamine resin microcapsule phase transition material emulsion prepared in the invention is micron-sized, and the microcapsule content can reach 5-38%. The phase transition material emulsion has the advantages of stable property, high resistance to acid and base environment and big enthalpy of phase transition, and the phase transition material emulsion is not easily demixed. The phase transition material emulsion can be widely applied to fields of latent functionally thermal fluid, building energy-saving materials and thermal-storing, temperature-regulated textile materials and the like.

The invention relates to a characteristic parameter calibrating system for a liquid crystal variable retarder (LCVR), which comprises a tunable ion laser, an achromatic wave plate, a polarizer, an analyzer, an electric control cabinet, an LCVR driver, an optical power meter and a computer. When light vertically radiates the liquid crystal variable retarder, the drive voltage of the liquid crystal variable retarder is modulated continuously to obtain a corresponding light intensity curve diagram; the Mueller matrix expression of the calibrating system is established by utilizing maximum light intensity value in the curve diagram and light intensity value under measured voltage to obtain the phase delay expression of the liquid crystal variable retarder under the measured voltage; when the light does not vertically radiate the liquid crystal variable retarder, the angles of the polarizer and the analyzer are modulated; and a Stokes vector expression is established by utilizing light intensity value detected under different adjusting states to obtain the phase delay and fast axis direction expression of the liquid crystal variable retarder under specific voltage. The invention has the capacity of calibrating the characteristic parameters of the liquid crystal variable retarder. When the light vertically radiates, the polarizer and the analyzer are not required to be rotated during the calibrating process; and when the light does not vertically radiate, constant incident intensity is ensured during the calibrating process by utilizing the achromatic wave plate, so that the calibration accuracy is improved.

A control system is designed in which a controlled plant is controlled based on output feedback from the controlled plant. An all-pass filter is modeled that is formed of a synthesis of a notch filter compensating for a resonance mode in the control system and the resonance mode. A design controlled plant including the all-pass filter is determined. A controller controls the design controlled plant and includes a weighting function, and, after the weighting function is derived, gain of the weighting function is adjusted using desired gain crossover frequency and phase margin. A phase variable included in a phase-lead weight is determined, and thus the weighting function is determined. H∞ loop shaping is applied to the weighting function and the design controlled plant to obtain an H∞ loop controller.

A method of modeling time-dependent electrical activity of a biological system, the method comprises transforming an input through at least one dynamic mode to yield at least one modal output; processing the at least one modal output to yield at least one amplitude variable and at least one phase variable; and mapping the at least one amplitude variable and the at least one phase variable to an observable output.

The invention discloses a howling detection method of an audio signal. By calculating the peak-to-average power ratio of the amplitude of the audio signal and the second-order phase change of the audio signal of adjacent frames, and comparing the calculation result with a preset threshold, it can Accurately detect whether there is howling during audio signal transmission, reduce misjudgment, and solve the problems of low accuracy and prone to misjudgment of traditional detection methods.

The invention discloses a preparation method of a double-layered wall material phase-variable micro capsule and in particular relates to a dense double-layered structure which is formed by connecting inner and outer two layers of wall materials by adopting an interface polymerization under the action of a cross-linking agent, wherein the inner and outer layers of the wall materials are prepared by adopting an in-situ polymerization. The preparation method comprises the step of forming the stable double-layered structure under the action of the cross-linking agent with urea formaldehyde as the outer layer wall material and an alkene polymer as the inner layer wall material, wherein the cross-linking agent is an organic micromolecule containing double bonds and hydroxymethyl radical groups. The method is suitable for an organic core material; on the basis that the particle size is uniform and the embedding rate is high, the double-layered wall material phase-variable micro capsule also has the advantages of the hydrophilic performance and not-easily-agglomeration performance of a urea formaldehyde resin micro capsule, is hydrophobic with polymethyl methacrylate and is low in permeability.

A full polarization spectrum imaging system for synchronously detecting ground feature light and skylight is formed by an optical system, an electronic driver, a dual-channel image collecting card and a computer; the optical system is divided into two channels: the first channel is formed by a fisheye optical lens, a light filtering wheel 1, two liquid crystal phase variable retarders LCVR1 and LCVR2, a polarization piece 1, a microspur optical lens 1 and a CCD (charge-coupled device) 1 and is used for finishing the imaging of skylight; the second channel is formed by a telescopic optical lens, a light filtering wheel 2, two liquid crystal phase variable retarders LCVR3 and LCVR4, a polarization piece 2, a microspur optical lens 2 and a CCD 2 and is used for finishing the imaging of ground feature light. The electronic driver is used for controlling the voltage values applied to the four LCVRs, changing the phase retardance of the value values, and realizing the dual-channel full polarization imaging. Image signals of the tested skylight and ground feature light are collected by the computer and are subjected to image processing. The system realizes the synchronous detection on polarization information of the skylight and the ground feature light and can be used for the research on remote sensing atmosphere effect correction of ground feature polarization.

Systems and methods for optimizing power flows using a harmony search, including decoupling phases in a multi-phase power generation system into individual phase agents in a multi-phase power flow model for separately controlling at least one of phase variables or parameters. One or more harmony segments from harmony memory are ranked and selected based on a utility value determined for each of the decoupled phases. A harmony search with gradient descent learning is performed to move the selected harmony segments to a better local neighborhood. A new utility value for each of the selected segments is determined based on historical performance, and the harmony memory is iteratively updated if one or more of the new utility values are higher than a utility value of a worst harmony segment stored in the harmony memory.

There is provided a transmission system for transmitting a transmission signal, having a periodic clock output section for outputting a periodic clock having a preset period, a transmitting section for transmitting the transmission signal in synchronism with the periodic clock and a receiving section for receiving the transmission signal transmitted from the transmitting section, wherein the receiving section has a data synchronizing clock generating section for generating, based on sampling data sampled from the transmission signal received from the transmitting section, a data synchronizing clock synchronized with variation of values of the sampling data, a periodic phase difference detecting section for detecting a phase difference between the periodic clock received from the periodic clock output section and the data synchronizing clock, a phase variable clock generating section for generating a phase variable clock obtained by varying phase of the periodic clock received from the periodic clock output section so that a variable phase difference which is a phase difference between the phase variable clock and the data synchronizing clock becomes an amount set in advance based on the phase difference and a data sampling section for sampling the sampling data from the transmission signal received from the transmitting section by receiving the transmission signal in synchronism with the phase variable clock to feed it to the data synchronizing clock generating section.

The invention discloses a space vector pulse width modulation method for a six-phase variable-frequency power source, which comprises the following steps 1), a six-phase / two-phase coordinate transformation matrix is used for mapping sixty-four switching states of a six-phase voltage source inverter to a dq sub-plane, a z1z2 sub-plane and an o1o2 sub-plane, and sixty-four fundamental voltage space vectors are obtained, wherein four zero vectors are included in the sixty-four vectors; 2), twelve vectors with the maximum amplitudes in the sixty-four vectors are selected from the dq sub-plane, and twelve new vectors are constructed according to a principle that voltseconds of the z1z2 sub-plane and o1o2 sub-plane are zero; 3), expected vectors are synthesized in the dq sub-plane by using the twelve new vectors and the zero vectors, and the action time of fundamental vectors corresponding to the new vectors is determined; and 4), action sequences of the fundamental vectors corresponding to the new vectors are determined according to a design principle that the switching times of the six-phase voltage source inverter is least and an output voltage waveform is in a 1 / 2 periodically symmetrical state. The method can be applied to modulation of the output voltage waveform of a multi-phase variable-frequency power source; the switching loss of the inverter can be reduced; load harmonic current can be inhibited.

The invention is concerned with phase transition tiny capsule and its production. The phase transition tiny capsule relates to solid purse shell and phase transition inner core and the core is packed in the solid purse shell. The shell is thermosetting phenol-formaldehyde resin and the core is one or some alkane with 14 to 20 carbons. The method is easy to control the thickness of wall and the proportion of tiny purse shell and core is same as the ration of material. The shape of tiny purse shell is good with smooth surface and is not reuniting with certain shell and core structure. It has wide range of melting point and the capsule is well during the phase transition with long work time. The rigidity aromatic ring does well in bearing heat, and the capsule shell is phenol-formaldehyde resin and has good tight character and high anti-heating temperature.

A split cycle phase variable reciprocating piston spark ignition engine comprising a compressor unit having a compression chamber adapted to carry out the intake and compression strokes of a four stroke engine cycle, a power unit having an expansion chamber adapted to carry out the expansion and exhaust strokes of a four stroke engine cycle, a crossover gas passage for transferring compressed gas from the compression chamber to the expansion chamber, an expansion chamber volume modifier to provide nearly full load like combustion chamber condition at all the engine load conditions by means of modifying volume and shape of the expansion chamber, a phase altering mechanism for altering phase relation between the compressor unit and the power unit as a function of engine load variation, an electronic control unit for providing control commands for various electrically operated actuators and motors.

The invention provides a graphene-coated variable phase nano magnetic composite material with a core-shell structure. The shell is a graphene shell which is formed by multiple layers of graphene sheets, and the thickness of the shell layer is 5-50nm; and the core is a magnetic core and is a phase-variable nano magnetic particle with a particle diameter of 10-90nm. The invention also provides a preparation method of the graphene-coated variable phase nano magnetic composite material. According to the method provided by the invention, the ferrocene powder is taken as an iron source and a carbon source, and the plasma is taken as a synthetic environment so as to ensure that the toxicity and environmental pollution caused by reactants can be reduced and the mass production can be facilitated; the phase of the obtained magnetic nano particles can be controlled by controlling the nitrogen ratio of the plasma in the preparation process; and the graphene-coated nano magnetic powder prepared by adopting the method provided by the invention is fine in particle size, uniform in distribution, good in degree of sphericity and short in preparation process.

The invention relates to a light conductive energy-gathering high-temperature phase variable accumulation solar-energy generator, which comprises: a light conductive channel, a transparent window, a outer frame, a heat collecting chamber, a heat accumulator, a heat conductive bar, a heat conductive plate, and thermal-insulated material. Wherein, the heat accumulator is inside the frame and above the heat collecting chamber; the heat conductive bar through the heat accumulator is connected to the lower part of heat conductive plate; the frame is formed by two frames whose interlayer space are vacuumed. The sunlight via the light conductive tube or optical fiber and transparent window enters the heat collecting chamber to be transformed into heat energy, which via the conductive bar is stored into heat accumulator. The invention can use high-temperature phase variable accumulation material to store the heat. When user needs heat, the energy is provided via the conductive plate.

The invention discloses a time interleaving random waveform synthesis device and method based on DA zero-return-hold function. The method comprises the steps that based on a user's waveform parameter setting, a random waveform data is generated, through the calculation of a sampling rate and a vertical resolution, the data reading speed is acquired, based on the reading speed, reading the waveform data to acquire a DDS waveform data, transmitting the data of the sampling points of even numbers of the DDS waveform data to a first DA chip applying the zero-return-hold function, transmitting the data of the sampling points of odd numbers to a second DA chip applying the zero-return-hold function, two lines analog signals output from DA chip undergo the impedance matching, precision delay adjustment and signal overlay to achieve the vector overlay of two lines of analog signals; the overlaid analog signals are filtered and controlled in amplitude to acquire an output waveform. The method and device use the overlaying of the output signals of two DA zero-return-hold functions which is equal to the output signal of a DA zero order preserving function with two times of the sampling rate, thus causing no other amplitude and phase variants, needing no compensation, and enhancing the sampling rate.

The invention belongs to the technical field of low-temperature natural gas liquefaction, and relates to LNG (liquefied natural gas) secondary low-temperature liquefaction equipment and the technique of refrigeration by mixed refrigerant. C2H4 refrigerant and N2-CH4 mixed refrigerant steam of 0.3MPa and -130 DEG C from an LNG three-level outlet are used for cooling and liquefying natural gas of 5.8MPa and -53 DEG C in a three-stream spiral wound type heat exchanger, so that LNG can conveniently enter a three-level undercooling stage. The three-stream spiral wound type heat exchanger for secondary liquefaction is used for undercooling the C2H4 refrigerant first, the undercooled C2H4 refrigerant is throttled to a shell side to be mixed with the N2-CH4 to cool a -53-DEG C LNG pipeline, a N2-CH4 precooling tube bundle and a C2H4 undercooling tube bundle, so that undercooling of the C2H4 and precooling of the N2-CH4 and liquefaction of natural gas are realized. The equipment is compact in structure and high in heat exchange efficiency, and can be used for the field of phase-variable low-temperature heat exchange of gas at temperature ranging from -53 DEG C to -120 DEG C, the problem of LNG secondary low-temperature liquefaction is solved, and low-temperature heat exchanging efficiency of an LNG system can be improved.

The invention discloses a single-phase earth fault line selection method for a small-current grounding system. The method comprises the following steps: an intelligent controller is used for judging and determining that a capacitor with a fixed capacitance value and a resistor with a fixed resistance value are respectively put into a neutral point grounding branch for a preset duration by a cut-off switch after a single-phase earth fault happens to the small-current grounding system according to a three-phase voltage signal of a bus collected by a voltage transformer; a plurality of current transformers are respectively used for collecting current signals of a plurality of to-be-tested lines within the preset duration and transmitting the current signals to the intelligent controller through a data collection device; the intelligent controller is used for respectively analyzing the phase variable quantity and the amplitude variable quantity of a zero-sequence current of the plurality of to-be-tested lines according to the current signals; and the intelligent controller is used for comparing the phase variable quantity and the amplitude variable quantity of the zero-sequence current of the plurality of to-be-tested lines, and selecting the line with the maximum phase variable quantity and amplitude variable quantity as a fault line.