26results about How to "Slow response" patented technology

The invention provides a vehicle body design method and system, electronic equipment and a storage medium. The method comprises the following steps: searching a design scheme set by utilizing a multi-objective optimization model building module; comparing material performance data by using an intelligent material database; simulating and adjusting a vehicle body structure by using a structure optimization design module; adjusting and optimizing the target weight by using a real-time feedback and interactive design platform; and evaluating the life cycle cost and environmental influence of different design schemes by using an environment and economy evaluation module. According to the embodiment of the invention, by integrating an optimization algorithm, intelligent material selection, a high-precision simulation technology and a comprehensive evaluation system, the problems of low efficiency, limited material compatibility and incomplete evaluation existing in a traditional multi-material mixed structure optimization method are solved in a targeted manner; the method aims at promoting the automobile light weight technology to advance to higher-level intelligentization, high efficiency and sustainability.

The invention relates to the technical field of energy-saving coal mills, in particular to an automatic control system of an energy-saving coal mill, which comprises a pulverized coal processing module used for processing raw coal into pulverized coal through the energy-saving coal mill; the detection module comprises a pressure sensor and a temperature sensor; the pressure sensor is arranged in the energy-saving coal mill and is used for detecting the working pressure in the energy-saving coal mill; the temperature sensor is arranged in the energy-saving coal mill and is used for detecting the temperature in the energy-saving coal mill; the communication module is used for transmitting the detected sensor data to the control module; and the control module is respectively connected with the pulverized coal processing module, the detection module and the communication module, and is used for determining the pre-tightening force of the electric valve according to the variance of the response duration of the electric valve or determining the working pressure in the energy-saving coal mill according to the average delay duration of the operation of the energy-saving coal mill. The control stability of the energy-saving coal mill is improved.

The invention discloses a pressure-temperature gradient coupling sensor and application thereof, and belongs to the technical field of intelligent robot sensors and flexible wearable electronics, and the pressure-temperature gradient coupling sensor specifically comprises a net-shaped elastic line containing a temperature sensitive material, a flexible film wrapping the pressure sensitive material, and a bidirectional overflow valve; wherein the two-way overflow valve is fixed at an inlet of the flexible film, the flexible film is completely coated with the net-shaped elastic thread, and the tail end of the net-shaped elastic thread is fixed on the two-way overflow valve. According to the invention, overall coupling deformation is realized based on the pressure-sensitive film and the temperature-sensitive elastic line, and meanwhile, the detection requirement of pressure-temperature dynamic gradient change is met; compared with a traditional single-variable sensor, the pressure-temperature gradient coupling sensor has the advantages that the response characteristic of the sensor is improved through the cooperative coupling effect of pressure and temperature, and the phenomenon that signals are not synchronous due to the fact that a plurality of single-factor sensors are connected in series and in parallel is avoided.

The invention provides an epoxy resin composition for a winding layer of an IV type hydrogen storage bottle as well as a preparation method and application of the epoxy resin composition. The epoxy resin composition comprises the following components: epoxy resin, a diluent, a curing agent and an accelerant, the epoxy resin is liquid epoxy resin. The formula system is small in viscosity, the reaction is slow at normal temperature, and the requirement of the winding process for the pot life can be met. The curing temperature required by the epoxy resin system is not higher than the softening temperature of the polyethylene liner. And the glass transition temperature of the cured product is higher than the standard requirement. The impact strength of a cured product obtained after the epoxy resin system pouring body is cured is also greatly improved.

There is presented a method of controlling a power factor corrector (PFC) configured to receive input power and supply power to a load via a DC / DC converter, the method being performed by a PFC controller configured to control the PFC, where the PFC controller includes a voltage controller, the method comprising: receiving a first signal sent from a DC / DC controller configured to control the DC / DC converter, the first signal indicates the load; deriving a second signal based on the first signal, where the second signal is an expected output control signal of the voltage controller at a load indicated by the first signal; and configuring the voltage controller according to the second signal, so that the output voltage VBulk of the PFC to the DC / DC converter is kept stable.

The utility model relates to the technical field of electric tilting valves, and discloses a novel electric tilting valve which comprises a supporting pipe, annular connecting plates are fixedly connected to the front end and the rear end of the supporting pipe respectively, a plurality of mounting holes are formed in the middles of the annular connecting plates, and annular limiting grooves are formed in the front end and the rear end of the supporting pipe respectively. The middle of the inner wall of each annular limiting groove is fixedly connected with an annular rubber ring, the annular rubber rings and the limiting grooves are arranged, the rubber rings are embedded in the annular limiting grooves in the two ends of the supporting pipe, double sealing is formed through pressing, and the leakage problem caused by vibration or deformation of a traditional valve body is solved; the installation holes in the annular connecting plate support rapid flange installation, the sealing face is evenly stressed, local stress concentration caused by traditional bolt direct connection is avoided, the servo motor and the rotating shaft are arranged, the rotating angle of the rotating shaft is controlled through the servo motor, and linear adjustment of flow or pressure is achieved.

The invention discloses a high-power electrochemical energy storage system, which comprises a two-layer physical architecture and a three-layer software architecture, and is characterized in that the two-layer physical architecture comprises a station control layer and an in-place layer; the station control layer comprises an intranet switch, a control network switch, and a prepositive server, an EMS server and a coordination controller which are respectively connected with the intranet switch; the in-situ layer comprises a plurality of energy storage units. Each energy storage unit comprises a box-type transformer, an in-situ switch, a data network switch, a BMS and a PCS, wherein the BMS and the PCS are connected with each other. The BMS, the PCS and the box-type transformer are respectively connected with the local switch; the local switch is connected with the data network switch; the coordination controller is connected with the PCS through the control network switch; the three-layer software architecture comprises a first layer, a second layer and a third layer; the BMS and the PCS are in the first layer, the prepositive server is in the second layer, and the EMS server is in the third layer. The method has the advantages of being low in complexity, high in real-time response speed, large in cost advantage, easy to maintain and the like.

The present application discloses a method for reducing the variable pitch load of an aircraft propeller, and relates to the technical field of propeller balance. The method comprises: obtaining the operating parameters and mass distribution of the aircraft propeller, obtaining the variable pitch torque data table generated by the centrifugal force of the propeller blades through finite element analysis; judging whether the propeller operation is balanced according to the variable pitch torque data table, and obtaining the unbalanced data if it is unbalanced; obtaining the operating environment of the aircraft, determining the counterweight mass of the counterweight block; extracting the unbalanced point in the unbalanced data, and determining the counterweight position of the counterweight block; obtaining the propeller structure, and determining the counterweight shape of the counterweight block in combination with the aerodynamic efficiency; counterweighting the aircraft propeller according to the counterweight mass, counterweight position and counterweight shape, obtaining the propeller parameters after counterweighting, and obtaining the variable pitch load scheme according to the propeller parameter settings. The present application improves the response speed of reducing the variable pitch load of an aircraft propeller.

The present invention discloses a ship fuel supply system, including a fuel storage tank T, wherein a centrifugal fuel pump P is arranged in the fuel storage tank T, and the centrifugal fuel pump P inputs the LNG in the fuel storage tank T into a cryogenic vacuum pump pool D through an ultra-low temperature pipeline, and a high-pressure fuel pipeline and a low-pressure fuel pipeline are arranged downstream of the cryogenic pump pool D. The cryogenic pump of the present invention belongs to a hydraulic pump, and the hydraulic pump is installed in the pump pool as a whole, and the medium has no leakage, which effectively reduces the system cooling loss, reduces the vaporization amount, helps to optimize the working conditions when the cryogenic pump is running, and effectively prolongs the pressure storage time of the storage tank.

The invention relates to the technical field of hot water supply equipment, and discloses a control method of a gas water heater and the gas water heater. The control method comprises the steps that under the conditions that the gas water heater is in a stable working state and a main controller of the gas water heater adopts closed-loop control over a direct-current fan, the fluctuation condition of working parameters of the direct-current fan is judged; the working parameters comprise at least one of current or rotating speed; and if the fluctuation of the working parameters is abnormal, reducing the sensitivity of the main controller. The fluctuation condition of the working parameters of the direct-current fan is judged, if it is detected that the fluctuation of the working parameters of the direct-current fan is abnormal, the sensitivity of the main controller is reduced, and the situation that the rotating speed of the fan is further fluctuated due to the fact that the parameters output to the direct-current fan are frequently adjusted due to too fast response is avoided; therefore, the fluctuation abnormity of the working parameters of the direct-current fan in the operation process of the gas water heater is effectively controlled, the working stability of the gas water heater is improved, and the use requirements of users are met.

The utility model relates to the field of conveying devices, in particular to a rare earth feed liquid conveying device. According to the technical scheme, the rare earth feed liquid conveying device comprises a storage assembly and a flow monitoring assembly; the material storage assembly comprises a material bin; a fixed cover is arranged at the upper end part of the stock bin; a sliding groove is formed in the fixed cover; a fixing plate is arranged at the upper end of the sliding groove. A rotating motor is arranged at the lower end of the fixing plate; the lower end part of the rotating motor is rotationally connected with a pinion; a flow monitoring assembly used for flow detection is arranged on one side of the material storage assembly. The flow monitoring assembly comprises a circulating pump; a constant-pressure pump is arranged on one side of the circulating pump; a flow meter is arranged on one side of the constant-pressure pump; a pressure gauge is arranged on one side of the flowmeter. By arranging the pressure and flow monitoring system, after the pressure and flow monitoring system is started, the detection unit monitors the pressure and flow in the conveying pipeline in real time and sends data to the control unit.

The application discloses a kind of based on photon crystal microcavity's storage and calculation integrated light chip and preparation method thereof, belong to optical quantum chip field.Light chip includes by lower to upper arrangement substrate, first contact layer, n-type GaAs contact layer, second contact layer and p-type GaAs contact layer;N-type electrode is prepared on step surface, step surface is formed by etching p-type GaAs contact layer and second contact layer and etching part n-type GaAs contact layer;Multiple p-type electrodes are prepared on the surface of p-type GaAs contact layer;Etching forms two-dimensional photonic crystal structure, which includes a photonic crystal waveguide and multiple photonic crystal microcavities, two gratings are etched at both ends of the photonic crystal waveguide, and air grooves are prepared below the two-dimensional photonic crystal structure and the grating.The light chip of the application can realize the optical calculation of matrix vector product and store the optical signal.

A deep ultraviolet photodetector based on large-size hexagonal boron nitride single crystals and a preparation method thereof, comprising: a substrate; an adhesive, spin-coated on the upper surface of the substrate; a large-size hexagonal boron nitride single crystal, covering the surface of the substrate spin-coated with the adhesive; and a pair of electrodes, partially covering the upper surface of the large-size hexagonal boron nitride single crystal. The present invention prepares a deep ultraviolet photodetector with high response speed, high switching ratio, and high spectral selectivity in the deep ultraviolet region through large-area, high-quality, and moderately thick large-size hexagonal boron nitride single crystals. The detector has great application prospects in space optical communications, military early warning detection, ozone hole monitoring, and aerospace fields.

The utility model relates to pipeline safety monitoring technical field, and disclose a kind of sensing pile device of monitoring oil and gas pipeline periphery construction behavior, including equipment column, equipment lower shell is fixedly connected in equipment column by bolt, the upper fixedly connected equipment upper shell of equipment lower shell, the shell base is fixedly connected in equipment lower shell by bolt;Through the setting of pickup unit, collect sound and extract MFCC feature, utilize SVM classifier to distinguish construction and environmental noise, while starting wide-angle camera to record video when meeting trigger condition, target detection and behavior analysis are carried out through AI data processing unit, form the dual verification mechanism of voiceprint and video, effectively reduce false alarm rate to below 5%, avoid relying on single sensor, it is difficult to distinguish construction noise and environmental noise, lead to high false alarm rate.

The invention relates to the technical field of control of air source heat pumps, particularly provides a control method and device of an air source heat pump, a medium and the air source heat pump, and aims to solve the technical problem of how to reduce the real-time evaporation temperature of a compressor of the air source heat pump more efficiently. In order to achieve the purpose, the control method of the air source heat pump comprises the steps that the real-time evaporation temperature of a compressor of the air source heat pump is obtained, and the difference value between the real-time evaporation temperature and the preset highest evaporation temperature is obtained based on the real-time evaporation temperature; and according to the difference value, the opening degree of an electronic expansion valve of the air source heat pump and / or the gear of a draught fan are / is controlled. By means of the configuration mode, the real-time evaporation temperature of the compressor of the air source heat pump can be reduced more efficiently.

The invention relates to the technical field of logistics, and discloses a tobacco logistics industry global intelligent supervision platform system, which adopts YoLo, ResNet, multipath, quantum parallel, quantum Fourier transform, opencv, OCR / SIFT skeleton key point detection and deepsort tracking technologies to carry out image recognition and state recognition on monitoring video information and recognize markers in an environment. The identification result obtained after identification is analyzed, the number of the strip-shaped cigarettes in the picture, the ID appearance duration, the positions of the strip-shaped cigarettes, the loading and unloading conditions and the label conditions are determined and calculated, whether violent loading and unloading are carried out or not is judged, the falling angle and the falling condition of the strip-shaped cigarettes are judged, an alarm is given, and a red light is displayed. The processing result and the corresponding image or video are sent back to the intelligent platform display device; and the intelligent platform display device is used for receiving the content transmitted by the data processing module and storing the data for platform management personnel to perform management and information pushing.

The invention belongs to the technical field of tobacco flavor preparation, and discloses a method for preparing tobacco flavor based on polysaccharide Maillard reaction and application of the tobacco flavor. The method comprises the following steps: dissolving amino acid and polysaccharide in a solvent according to a certain molar ratio to obtain a reaction material; putting the reaction materials into a reaction kettle, and carrying out Maillard reaction under a closed condition; and after the reaction is finished, rapidly cooling the reaction kettle to room temperature to obtain a Maillard reaction product. In the reaction process, polysaccharide is cracked into various reducing sugars step by step and is subjected to Maillard reaction with amino acid, so that the problems that monosaccharide participates in the Maillard reaction, the aroma is single, and the reaction is violent and difficult to control are effectively solved. When the tobacco flavor is applied to cigarettes, the irritation of smoke can be remarkably reduced, offensive odor can be covered, meanwhile, the smoke is softened, the aftertaste is improved, the smoke concentration is increased, and the baking fragrance and the sweet aftertaste are increased. The method is low in cost, simple in equipment and convenient to operate, can be put into production without modifying existing production equipment, and has a good industrial application prospect.

The invention discloses a size inspection system for stainless steel pipe production, and relates to the technical field of stainless steel pipe detection. According to the invention, the external diameter of the steel pipe is obtained through cooperation of the pressing external diameter detection roller and the detection support roller by using the resistor strip and the contact sliding needle; and a closed loop is formed by the voltage-adjustable conductive contact roller to measure the inner diameter and the wall thickness. All the roller axes are perpendicular to the moving direction of the steel pipe, it is ensured that accurate online size detection is achieved in continuous production, the device can adapt to steel pipes of various specifications through rapid replacement and structure adjustment, and the detection efficiency and quality are greatly improved.

The application discloses a method for preparing vinylene carbonate by recycling ethylene dicarbonochloride. The method comprises the following steps: (1) mixing activated carbon@zinc powder, organic solvent and polymerization inhibitor uniformly, then starting stirring and carrying out nitrogen replacement; (2) adding ethylene dicarbonochloride with a concentration of 37wt% dropwise at a certain temperature, and carrying out reaction under insulation; (3) after the reaction is completed, solid-liquid separation and washing are carried out, the washing liquid and the filtrate are combined, and vinylene carbonate is obtained through pressure reduction desolventization. The activated carbon@zinc powder is gaseous zinc element generated after zinc chloride obtained through filtration after the reaction is completed is introduced into activated carbon particles through a series of reactions. The application effectively utilizes ethylene dicarbonochloride, reduces environmental pollution, improves the yield of vinylene carbonate by using activated carbon@zinc powder, realizes cyclic utilization of by-products in the preparation of vinylene carbonate, and reduces production cost.

The application discloses a kind of gas detector and its control method, belong to gas detection technical field.The detector includes electrochemical sensor and metal oxide semiconductor sensor for detecting the same target gas.The method comprises: obtaining two-way output signals;In the preset sliding time window, the correlation coefficient of two signals is calculated, when the correlation coefficient is lower than the preset threshold and lasts more than the preset fault confirmation time, sensor failure is judged;The signal change rate of two signals is calculated, when the change rate of metal oxide semiconductor sensor exceeds the preset fast threshold and the change rate of electrochemical sensor is lower than the preset slow threshold, it is judged as interference and alarm is inhibited;When both two-way signals exceed the alarm threshold, it is judged as real leakage and alarm.The application utilizes the inherent difference of two kinds of sensors in response speed and selectivity, considers detection accuracy and long-term reliability, effectively suppresses the false alarm caused by interference gas.

The utility model discloses a Y axis structure of spraying machine relates to spraying machine technical field, aims at solving the technical problem of the Y axis stroke length deficiency of current spraying machine, including installation box and the first moving part of sliding installation in installation box and the second moving part of setting in the first moving part, the first moving part is the box body structure setting, the second moving part sliding installation is in the first moving part, the lower extreme and the side end of first moving part and second moving part all are provided with track strip, the track strip is located in the track groove, the second moving part is by two rectangular section steel welding constitutes, the outside of rectangular section steel is provided with the bending section steel. The utility model has the advantages of satisfying the complex mould demand's advantage such as through adopting the nested sliding design, the first, second moving part superposition extension stroke, cooperation second moving part cross section structure design, weight reduction while guaranteeing the strength, guaranteeing the stability of extension stroke, reducing the deformation, improving the efficiency, double limit ensures the movement precision.

The invention relates to the technical field of dampers, in particular to a linear damper. According to the technical scheme, the linear damper comprises a metal shaft, an end cover, an upper pressure spring, a gasket, a first sealing ring, a shaft seat, a valve seat, a second sealing ring, a base, a lower pressure spring, a shell and a balance sleeve; through the rigid connection arrangement of the shaft seat and the bottom of the metal shaft, the middle can be kept stable, pressure is applied to the end of the metal shaft, the shaft seat is tightly attached to the valve seat, oil can only pass through a hole in the shaft seat and flow into a working area from an oil storage area, and damping force is generated in the period. After pressure applied to the metal shaft is stopped, the lower pressure spring jacks up the base, the base jacks up the shaft base, at the moment, the shaft base is not tightly attached to the valve seat any more, a large amount of oil in a working area flows into an oil storage area through the notch, it is guaranteed that damping force is large, meanwhile, rapid resetting can be achieved, the internal structure is effectively lubricated, and the service life is prolonged. The overall use effect is improved.

The invention discloses a method for reducing the variable pitch load of an aircraft propeller, and relates to the technical field of propeller balance. The method comprises the steps of obtaining operation parameters and mass distribution of an aircraft propeller, and obtaining a variable-pitch torque data table generated by centrifugal force of blades of the propeller through finite element analysis; judging whether the operation of the propeller is balanced or not according to the variable-pitch torque data table, and if not, obtaining unbalanced data; obtaining the operation environment of the aircraft, and determining the counterweight mass of the counterweight block; unbalanced points in the unbalanced data are extracted, and the counterweight position of the counterweight block is determined; a propeller structure is obtained, and the balance weight shape of a balance weight block is determined in combination with aerodynamic efficiency; and according to the balance weight mass, the balance weight position and the balance weight shape, balance weight is conducted on the aircraft propeller, propeller parameters after balance weight are obtained, and a variable pitch load scheme is obtained according to the propeller parameters. According to the method, the response speed of reducing the variable pitch load of the aircraft propeller is increased.

The invention discloses a parallel type high-precision micro-motion device which comprises a supporting base, a static platform, two same multi-connecting-rod flexible branch chains, a piezoelectric ceramic driving module, a spring pre-tightening structure, a guide structure and a micro-motion platform. A guide device is arranged between the micro-motion platform and the supporting base; each multi-connecting-rod flexible branch chain is composed of two identical upper connecting rods, a middle component and two identical lower connecting rods, and the two identical multi-connecting-rod flexible branch chains are arranged between the static platform and the micro-motion platform in parallel. The static platform and the micro-motion platform are connected through the two multi-connecting-rod flexible branch chains to form a closed structure, and the piezoelectric ceramic driving module drives the middle component to move towards the two sides and drives the upper connecting rod and the lower connecting rod to swing, so that micro-motion of the micro-motion platform is achieved. The motion zooming mechanism is adopted, so that the motion precision is improved; a spring pre-tightening structure is adopted, so that the springback rigidity is improved; a piezoelectric ceramic driving mode is adopted for driving, and the device is used for high-precision micro-motion positioning or measurement.

The invention provides a photoelectric detector with U-shaped potential, and relates to the technical field of photoelectric detection. The photoelectric detector comprises a substrate layer, an N-type channel layer and a P-type photosensitive structure layer which are sequentially stacked from bottom to top, a first electrode layer and a second electrode layer for applying bias voltage are arranged on the two sides of the N-type channel layer, and the voltage applied to the first electrode layer is larger than that applied to the second electrode layer, so that a U-type potential surface with an opening facing the P-type photosensitive structure layer is formed in the N-type channel layer; the U-shaped potential surface is in a potential distribution form which is formed under the combined action of hole injection from the P-type photosensitive structure layer to the N-type channel layer and non-uniform distribution of conductivity in a channel, wherein the potential in the middle is lower than the potential on the two sides of the U-shaped potential surface. According to the invention, the U-type potential distribution is constructed in the N-type channel layer, effective suppression of carrier transport in a dark state is realized, and a conduction channel is rapidly established under an illumination condition, so that the response speed and responsivity of the photoelectric detector are improved while the dark current is reduced.

The present invention discloses a three-phase four-bridge-arm inverter based on SiC MOSFET, comprising a main power circuit, a processor, a DC voltage acquisition circuit, a drive protection circuit, a current acquisition circuit and a load voltage acquisition circuit. The DC voltage acquisition circuit acquires the DC input voltage in the main power circuit and feeds it back to the processor. The current acquisition circuit acquires the load current in the main power circuit and feeds it back to the processor. The load voltage acquisition circuit acquires the load voltage in the main power circuit and feeds it back to the processor. The processor outputs eight control signals to the drive protection circuit, and the drive protection circuit generates four upper bridge arm drive signals and four lower bridge arm drive signals. The upper bridge arm drive signal and the lower bridge arm drive signal of the same bridge arm are interlocked. The three-phase four-bridge-arm inverter based on SiC MOSFET of the present invention has the advantages of high drive frequency, fast response speed, miniaturization of peripheral components, low switching loss, low heat generation, etc.