122 results about "Energy matching" patented technology

In accordance with an embodiment, A method of encoding an audio bitstream at an encoder includes encoding an original low band signal at the encoder by using a closed loop analysis-by-synthesis approach to obtain a coded low band signal, encoding an original high band signal at the encoder by using an open loop energy matching approach to obtain coded high band energy envelopes, comparing an energy of the coded low band signal with an energy of a corresponding original low band signal for a subframe, and generating an indication flag that indicates whether an energy envelope perceptual correction is needed for the subframe based on comparing the energy.

The invention relates to a cathode plate for a lithium-ion capacitor. The cathode plate comprises a current collector, a bottom coating and an upper coating. The bottom coating coats two sides of the current collector, and the upper coating coats the bottom coating. The bottom coating comprises a carbonaceous active material, a conductive agent and a binding agent I. The upper coating comprises stabilized lithium metal powder and a binding agent II. The invention further relates to a method for producing the cathode plate. The method is simple in production process, easy to operate on a large scale and capable of achieving pre-embedding without harsh environments; meanwhile, energy matching between the cathode plate and an activated-carbon anode plate of the lithium-ion capacitor is achieved easily by adjusting the coating thickness.

An energy-based pattern recognition algorithm receives the input frames of an audio signal and a test frame sequence and returns a best match in the audio signal to the given test frame sequence. The energy of each input frame is computed and input frames for which the energy is both within a predetermined degree of closeness to the local maximum energy within the test frame sequence and a local maximum within a respective neighborhood of adjacent frames are identified as probable matches. The difference between overall energy for frames neighboring the remaining probable matches and the test frame sequence is computed as a percentage. The best match is selected based on a weighted combination of difference between local maximum energies and minimum percent deviation in overall energy. Local signal characteristic matching may be employed, with weighting, to refine matching.

The invention discloses an intelligent control system for a microgrid. The intelligent control system for the microgrid comprises a microgrid energy management unit, a central control unit and a distribution type control unit, wherein the central control unit is respectively connected with the microgrid energy management unit and the distribution type control unit; the microgrid energy management unit is used for realizing the optimal energy matching of the mcrogid; the central control unit issues a command to the distribution type control unit according to the comprehensive operation control command of the microgrid energy management unit; and the distribution type control unit controls a power generation unit or an energy storage device. According to the intelligent control system for the microgrid, which is disclosed by the invention, the whole system is divided into different logic blocks, a system function is refined, and the system development and maintenance cost is greatly lowered.

Polymer composites and polymer nanocomposites are designed and manufactured by choosing surface-modified fillers having a solid surface energy matching the solid surface energy of the polymer, wherein the advancing contact angle of the polymer on the surface-modified filler is less than about 5 degrees. The fillers are surface-modified by adsorption of amorphous polymeric surfactants, consisting of either mono-modal, bimodal, or multi-modal size distribution. The surface-modified fillers of this invention display a measurable yield stress and a viscosity of about 30.000 Pa·s or less at room temperature, and comprise one or more materials selected from the group consisting of minerals, plant material, animal material, carbon fiber, graphite, amorphous carbon, carbon nanotubes, and glass fiber. This invention also provides a method for manufacturing a polymer nanocomposite which includes exfoliating an amorphous organoclay in a crystalline or semi-crystalline polymer by melt compounding the constituents in the absence of added solvents, activators, edge-modifiers, compatibilizers, or hydrotropes.

The invention relates to a normal wave modal frequency dispersion elimination transformation-based sound source distance and depth estimation method. According to the method, based on a phenomenon that shallow sea received signals are subject to frequencydispersion elimination transformation and then realize sound pressure focusing on a distance-frequency dispersion parameter two-dimensional plane, only when the transmission distance parameter of the received signals is equal to the distance of a target sound source, the sound pressure amplitude of normal waves can be maximum, and therefore, the distance parameters of the target sound source can be estimated; after the received signals have been subjected to the frequency dispersion elimination transformation, modes of first few orders can be separated obviously in the time domain, and the energy of the modes of the first few orders can be accurately estimated; and a multi-modal energy matching mode is adopted, so that the depth of the target sound source can be determined.

The invention provides a method and apparatus for rectifying purification of battery grade dimethyl carbonate. The apparatus comprises a normal-pressure dividing wall rectification tower, a low-pressure dividing wall rectification tower, a tower bottom reboiler, an auxiliary condenser, a tower top condenser and a condensation reboiler. A crude dimethyl carbonate raw material is added into the normal-pressure dividing wall rectification tower from the middle part and undergoes separation in the above two towers, low boiling products are removed from the tower top, high boiling products are removed from the tower bottom, and a highly-pure dimethyl carbonate product is extracted from the side line of the low-pressure tower. A dividing wall rectification technology is adopted to save two distillation towers, two reboilers and two condensers, and a differential pressure heat coupling technology is adopted to save one condenser, so the device investment is reduced; the differential pressure heat coupling technology is adopted to heat the tower bottom material of the low-pressure tower by using the tower top gas phase material of the normal-pressure tower as a heat source, so energy matching is achieved, and the energy consumption is reduced; and the dividing wall rectification technology and the differential pressure heat coupling technology are effectively combined, so the energy consumption is greatly reduced, and the device investment cost is reduced.

The invention relates to an inducer designing method based on a centrifugal pump, which belongs to the technical field of pumps. The method is characterized in that an inducer is designed based on a given centrifugal pump device. According to the inducer designing method based on the centrifugal pump, the inducer is designed by determining the flow, the pump lift, necessary net positive suction head and other experimental data at a point of the centrifugal pump with the highest efficiency, based on an external characteristic experiment according to the conditions of an existing water pump device. Consequently, the inducer acquires higher cavitation specific speed under the conditions of an outer diameter of a rim, inlet hub ratio and optimal inlet flow coefficient. Not only can the inducer be enabled to have good cavitation performance, but also the inducer has good energy matching relationship with a pump impeller, the performance of the inducer is improved, the operation stability of a system is enhanced, assembly difficulties caused by size difference between the pump and the inducer due to an original designing method can be prevented, the inducer designing efficiency is improved, and popularization value is realized.

The invention relates to a natural gas hydrogen production reactor and a hydrogen production process thereof. The reactor is combined by a plurality of different reaction cavities, the whole reactor contains five reaction areas for reforming, catalytic combustion, pre-catalytic combustion, transformation and purification, as well as three areas for gasification of material, preheating of the material and the like, so that the compactness of the reactor is improved, the processing difficulty of the reactor is reduced and the reactor is easy for scaling up; and the flow way of material flows among the different reaction cavities is mainly based on parallel current and counter current, energy matching between internal different material flows is reasonable and the heat transfer efficiency is high. The reactor disclosed by the invention can be widely used for coupling reaction systems with strong heat release and strong heat absorption, in particular to hydrogen source systems of full battery distributed power supplies of 1-10kW.

The invention discloses a variable speed motor and constant-power variable displacement pump matched hydraulic energy-saving system and a control method. The variable speed motor and constant-power variable displacement pump matched hydraulic energy-saving system and the control method are characterized in that the variable speed motor and constant-power variable displacement pump matched hydraulic energy-saving system comprises a hydraulic system and a control system; the hydraulic system comprises a variable frequency motor and a constant-power variable displacement pump connected with the variable frequency motor coaxially; according to the process property of the hydraulic system, model selection is conducted on the constant-power variable displacement pump; and the relation between pressure and torque is established, the relation of the pressure and rotation speed is obtained, and subsection control is conducted on motor speed according to a collected pressure value. According to the variable speed motor and constant-power variable displacement pump matched hydraulic energy-saving system and the control method, the energy matched degree of a driving system and a time sequence load is improved effectively, and the energy-saving defect of the constant-power variable displacement pump in a low pressure area is overcome.

The invention relates to a separate type ultrasonic atomizer, which comprises a water mist generating unit, a host machine and electrical connection components. The water mist generating unit includes a container and an oscillating mechanism. The container stores the liquid to be atomized. The oscillating mechanism is housed in the container and is in contact with the liquid to be atomized. The host has a control circuit and a power supply component. The power supply component provides power to the control circuit, and the control circuit provides the matching power generated by the oscillating mechanism to generate ultrasonic vibrations to atomize the liquid to be atomized. The water mist generating unit and the host are designed separately. . The electrical connection part is connected between the water mist generating unit and the host, and is used for transmitting the matching electric energy generated by the control circuit to the oscillation mechanism.

The invention relates to a multi-spectral physical therapy intelligent control method and device, and belongs to the technical field of medical instruments. According to the method, light-emitting light sources are used for emitting light of differential types of spectrum including far infrared light, red light, yellow light, blue light and the like, on the basis of the chemical action of short-wave light on cells and the heat effect of long-wave light, matching of light of differential types of spectrum in different proportions according to different levels of light energy is achieved through a spectral energy matching algorithm, light of different types of spectrum acts on subcutaneous tissue of a human body in a mutually cooperative mode so that tissue cells can be activated, the metabolism ability of cells is improved, and the purposes of preventing and curing disease are achieved. According to the device and method, recombination spectrum phototherapy is achieved, and the defects that when a method with a single light source in use is adopted, for example, only far infrared is in use, treatment is incomplete, and efficiency is low can be avoided; physiotherapy can be carried out on the human body intelligently and efficiently in a multi-directional mode, and the device and method are suitable for being widely applied and popularized.

The invention discloses a method for regulating an intermetallic compound for a dissimilar material overlap joint through laser-arc double-sided welding, relates to a method for overlapping and welding dissimilar materials, and aims to solve the technical problems that the produced intermetallic compound has hardly controlled thickness and a joint has poor mechanical property in the process of overlapping and welding the dissimilar materials. The method comprises the following steps of: prearranging brazing filler metals between overlap joints of the dissimilar materials, respectively arranging laser beams and arcs on two sides of the overlap joints and symmetrically heating and welding simultaneously, wherein the laser beams on the side of low-melting point materials are subjected to deep penetration welding, and the arcs on the side of high-melting point materials are brazed with the brazing filler metals. In the method, the laser beams are arranged on the side of the low-melting point materials to be subjected to deep penetration welding so as to be subjected to fusion welding with the brazing filler metals, and the arcs are arranged on the side of the high-melting point materials to be subjected to heat conduction welding so as to be brazed with the brazing filler metals; and the optimized interlayer reaction thickness is realized and excellent joint performance is achieved by controlling energy matching under the coaction of the laser and the arcs. The method is applied to the field of dissimilar material welding.

The invention relates to the technical field of agricultural pulverizer equipment, in particular to a hydraulic power depth adjustable pulverizer. The hydraulic power depth adjustable pulverizer comprises a work platform, a pulverizer device body and a conveying mechanism. The conveying mechanism is fixedly arranged on the upper surface of the work platform through bolts, on the right side of the conveying mechanism, through matched design of a conveying hose and hydraulic lifting columns, it can be well guaranteed that when different crops are ground, the depth of an inner cavity of the pulverizer device body is selectively changed, accordingly, the work power of the conveying mechanism is changed, and energy matching can be well guaranteed. When a feeding cavity and a pulverizing cavity are connected through the several sets of hydraulic lifting columns to achieve height adjustment, the fall height change that the crops enter the pulverizing cavity from the feeding cavity can be well changed, cereal can better enter the pulverizing cavity to a certain degree in cooperation with a slow action material screening device, and the whole device structure is high in practicability. Sufficient material grinding is guaranteed through the caliber change of a grinding notch.

The invention discloses a comprehensive utilization system for the waste heat steam of a steel enterprise, which comprises a sintering smoke desulfurizing device, a sintering machine and a sintering waste heat boiler, wherein the sintering smoke desulfurizing device, the sintering machine and the sintering waste heat boiler are successively connected, and a dry-quenching waste heat boiler matched with a coke production device is connected with a steam turbine generator unit. The comprehensive utilization system has the key point that a high-parameter steam outlet of the sintering waste heat boiler is respectively connected with the coke production device and the steam turbine generator unit, and the low-parameter steam outlet of the sintering waste heat boiler is also connected with the coke production device. In the comprehensive utilization system, the arrangement relationship of two technical systems of coking and sintering in a steel factory area is fully considered, the waste heat utilization of two production technologies is organically combined, the purpose of utilizing energy according to quality, making temperature geared to the needs of the job and utilizing by steps is realized by the policy of energy matching utilization according to respective waste heat characteristics and the parameter characteristics of the waste heat steam of the two production technologies. The situations that the waste heat steam is largely diffused, high-parameter steam is used in the mode of thermoreduction and pressure reduction and the like can be avoided, and the waste heat steam use ratio is furthest improved.

The invention relates to an intelligent control method for a rodless lifting system for an oil well. The intelligent control method comprises the steps that after a system is initialized, the hydraulic difference of the rodless lifting system is collected, and the liquid level of the oil well is calculated; a submersible progressing cavity pump is started and operated for a specified time, and then operating electrical parameters and the liquid production capacity of an oil well wellhead are monitored in real time; when the liquid displacement occurs on the wellhead, the pump lifting displacement is increased to the set pump displacement; when the operating current of the submersible progressing cavity pump does not exceed the limit, whether the working liquid level of the oil well is descended or not is judged; if the working liquid level of the oil well is descended due to the large pump lifting displacement, the set displacement parameter value of the submersible progressing cavitypump is decreased; whether the current rotating speed of the submersible progressing cavity pump reaches the lowest rotating speed or not is judged; and if the current rotating speed of the submersible progressing cavity pump does not reach the lowest rotating speed, the step that the pump lifting displacement is increased to the set pump displacement is executed. According to the intelligent control method, the problem of impedance compensation matching of cables of different oil well depths is solved through an adaptive voltage and current uplift technology, thus an underground submersible motor obtains good electricity energy matching, the operating period is long, the lifting efficiency is high, and the energy consumption cost is low.

The invention provides a three-dimensional protection design method used for a tunnel portal rockfall hazard. The method comprises the steps that 1, structure energy dissipation ratio principles of acurtain-type protection screen over a tunnel portal, an independently-targeted screen and curtain-type protection screens on the two sides of the tunnel portal are made clear; 2, the width, the span and a longitudinal initial position of the curtain-type protection screen over the tunnel portal are determined; 3, the width, the length, a relationship with the portal, cross slope and longitudinal slope positions and an angle of the independently-targeted screen are determined; 4, the width and the spans of the curtain-type protection screens on the two sides of the tunnel portal are determined;5, initial types of parts of the curtain-type protection screen over the tunnel portal, the independently-targeted screen and the curtain-type protection screens on the two sides of the tunnel portalare determined; 6, the width and the height of a flexible hangar tunnel of the tunnel portal are determined. According to the technology, an energy matching design principle is adopted for making designs of the structures more scientific and reasonable, and the detailed design of each structure is taken into account, so that three-dimensional protection of tunnel portal rockfall is achieved.

The invention discloses a method of optimizing stress equilibrium in a switching power supply, which comprises steps: a first diode is used for building an energy matching relationship among a first capacitor, an inductor and a transformer, that is, when a switching tube is conducted, an exciting circuit of the inductor and an exciting circuit of the transformer are separated via the first diode, when the switching tube is cutoff, the inductor and the transformer are connected via the first diode, within a half power frequency cycle, the first capacitor is divided into a charging period and a non-charging period, and when the first capacitor is in the non-charging period, the first diode is in a non-conduction period; the average power when the first capacitor is in the charging period and the average power when the first capacitor is in the discharging period are regarded as the same; and according to the energy matching relationship among the inductor, the first capacitor and the transformer, the principle of conservation of energy is used, and the inductor parameter selection range is calculated by the capacitance value of the first capacitor, the transformer turn ratio and the source-side winding inductance. Compared with the prior art, voltage stress of each element can be balanced, and electromagnetic interference caused by a large voltage change rate can be reduced.

The invention provides an electrical discharge machining level-by-level self-adaptive fuzzy control method of a metal-ceramic functionally graded material, and belongs to the technical field of electrical discharge machining. The method aims to solve the problem that due to differences in components on all layers and structural characteristics of the metal-ceramic functionally graded material, through holes can hardly be machined in the metal-ceramic functionally graded material through the electrical sparks, and the problem that due to mismatching of energy inside the through holes, residual stress exists between different gradient layers, performance and the service life of parts made of the metal-ceramic functionally graded material are affected. By means of the structural characteristics of the material and the electrical discharge machining discharge state characteristics of the material, with changes of the electrical discharge machining discharge state on all layers of material of the functionally graded material serving as an excitation source, an electrical discharge machining fuzzy controller model of the metal-ceramic functionally graded material is established through combination with the fuzzy control theory, the real-time feedback control of the machining process is achieved, and energy matching is conducted level by level in a self-adaptive mode according to the differences of the machined material. The method is used for the machining control over the metal-ceramic functionally graded material.

The invention provides a burn-back energy matching control method used for a digital welding machine. The burn-back energy matching control method used for the digital welding machine mainly includesthe steps that a wire feed speed function and a welding wire diameter are obtained; a virtual wire feed speed function is determined according to the wire feed speed function and the welding wire diameter, wherein when the welding wire diameter is larger than or equal to a preset value, the function value of the virtual wire feed speed function is larger than or equal to the function value of thewire feed speed function, and when the welding wire diameter is smaller than the preset value, the function value of the virtual wire feed speed function is smaller than or equal to the function valueof the wire feed speed function; and a response is made to a welding gun switch releasing signal, the wire feed speed is controlled according to the wire feed speed function, and the welding parameter matched with the welding current is controlled according to the virtual wire feed speed function. By means of the burn-back energy matching control method used for the digital welding machine, the welding quality can be effectively improved.

The invention discloses an optimal design method for an inducer with a varying pitch of a centrifugal pump, belonging to the technical field of pumps. The optimal design method is characterized by comprising the following steps: when designing the inducer with the varying pitch, firstly, determining data such as flow of a peak efficiency point of the central pump, a necessary net positive suction head, a device net positive suction head and the like through experiments, and then determining geometric sizes of diameters of an inlet and an outlet of a rim of the inducer and a rim folding lead according to the experimental data and a flow condition of the inlet of a main impeller of the pump. According to the optimal design method for the inducer with the varying pitch of the centrifugal pump provided by the invention, the inducer and the main impeller of the pump have good energy matching relationship, the performance of the inducer is improved, the operation stability of the system is enhanced, difficulty in selection of a lift coefficient of the inducer according to experience is avoided, and the efficiency for designing the inducer is improved. The optimal design method has a certain popularization value.

The invention discloses a power generation method and system of hybrid energy, relates to the technical field of power generation, and mainly aims at solving the problem of optimal power energy matching when the grid-connected power generation cannot be realized. The method comprises the following steps: monitoring an illumination status of the sunlight through a photosensitive probe; starting a solar tracking acquisition system connected with a horizontal DC servo motor according to the illumination status and a set of positioning monitoring equipment; controlling a solar cell panel to receive a light signal according to the solar tracking acquisition system; monitoring a wind force status through the rotation of a pneumatic impeller, and starting a wind energy system according to the wind force status and a set of wind speed monitoring equipment; controlling a double-fed power generator to receive a wind signal according to the wind energy system; converting the light signal and the wind signal into the power energy; charging an energy storage system by use of the surplus power quantity through a three-port dual-way DC/DC converter; or extracting the power quantity from the energy storage system through the three-port dual-way DC/DC converter, thereby charging the load.

The invention belongs to the technical field of photovoltaic materials and discloses synthesis of a perylene diimide asymmetric micromolecule non-fullerene receptor and a method for printing and preparing an organic solar battery. The perylene diimide asymmetric micromolecule non-fullerene receptor is a broad-bond gap Al-D-A2 type asymmetric non-fullerene micromolecule receptor based on a bridgedunit carbazole core, and has a structural formula I as shown in the specification. The asymmetric micromolecule receptor material which is provided by the invention and is used for printing and preparing the organic solar battery has good solution processing performance and electron transmission performance, and in addition has good absorption complementation and energy matching after being combined with narrow-bond gap polymer donor materials such as PTB7-Th; the receptor can be applied to an open circuit voltage which is 0.95V at most, and energy conversion efficiency which is about 2.01-3.27%, and the broad-bond gap asymmetric non-fullerene micromolecule receptor provided by the invention has wide application prospects in the field of organic photovoltaic.