22results about How to "Reduced performance impact" patented technology

The invention relates to a seawater-based delayed cross-linking agent, the seawater-based delayed cross-linking agent is a poly (ammonia boron) cross-linking agent, and the poly (ammonia boron) cross-linking agent is one of a poly (ammonia boron) cross-linking agent I and a poly (ammonia boron) cross-linking agent II; the seawater-based ultra-low-concentration guanidine gum fracturing fluid is prepared from the following components in percentage by mass: 0.20 to 0.35 percent of a vegetable gum thickening agent, 0.20 to 0.40 percent of a seawater-based delayed cross-linking agent, 0.10 to 0.30 percent of a seawater-based cross-linking synergist, 0.05 to 0.10 percent of a pH (Potential of Hydrogen) regulator, 0.05 to 0.10 percent of a cleanup additive, 0.2 to 3 percent of an anti-swelling agent, 0.03 to 0.20 percent of a sterilizing agent and the balance of seawater, according to the invention, the water cost of fresh water can be saved, the transportation cost of transporting fresh water can also be saved, and the effect of saving the cost of fracturing fluid is especially remarkable.

The invention provides a concrete water reducing agent and a preparation method thereof, and belongs to the technical field of water reducing agents. Adding the modified chitin, 1-vinyl-3-butylimidazolium trifluoromethanesulfonate, a silane coupling agent with double bonds, methacrylic acid, trans-butenedioic acid and an initiator into dimethylformamide, heating and stirring for reaction, removing methylbenzene under reduced pressure, and performing alkali washing and alcohol washing to obtain the concrete water reducing agent. The modified chitin is prepared by modifying chitin modified by sodium sulfonate and acrylic acid with tannic acid. Modified chitin, 1-vinyl-3-butylimidazolium trifluoromethanesulfonate, a silane coupling agent with double bonds, methacrylic acid and trans-butenedioic acid are copolymerized to prepare the polycarboxylate superplasticizer, molecules of the polycarboxylate superplasticizer are of a comb-shaped structure, a main chain of the polycarboxylate superplasticizer is provided with a plurality of active groups with high polarity, and a side chain of the polycarboxylate superplasticizer is provided with hydrophilic active groups. The water-reducing agent has the characteristics of low doping amount, high water-reducing rate, high reinforcing effect, high plasticity retaining property and volume stability, and has wide application prospects.

The application discloses a preparation method of an iron-based catalyst, the iron-based catalyst and application of the iron-based catalyst. The preparation method mainly comprises three steps: firstly, a mixed solution of an iron-based precursor and an organic template agent with uniform distribution is prepared by means of stable temperature and autogenous pressure in a solvothermal process; subsequently, a weak alkaline precipitant without alkali metal is added into the mixed solution under heating to prepare an iron-based precipitate; finally, a honeycomb-shaped iron-based catalyst for ortho-para hydrogen conversion is prepared through steps of cleaning, drying, calcining, granulating, re-cleaning and activation. By adding the organic template agent, the pore structure of the catalyst is effectively improved without affecting the crystal type of the catalyst, and the performance of the catalyst is improved; and the weak alkaline precipitant without alkali metal is adopted, so that the controllability of the preparation process of the catalyst is enhanced, the influence of impurities such as alkali metal ions on the performance of the catalyst is effectively avoided, and the method has a simple process and high practical potential.

The invention relates to a missile large static instability control method based on a swing nozzle. The swing nozzle is adopted to control a pitching channel and a yaw channel, and an air rudder is adopted to control a rolling channel; the control method of the rolling channel comprises the steps that a rolling channel control instruction is obtained through a variable structure control method, and the rolling channel control instruction is output to the rudder system after being subjected to amplitude limiting; according to the thrust obtained through online identification, the missile flight process is divided into three stages including a thrust establishing stage, a thrust stabilizing stage and a thrust ending stage; in three stages of a missile flight process, a composite structure method is adopted, a pitching channel control instruction and a yaw channel control instruction are calculated, and the pitching channel control instruction and the yaw channel control instruction are output to a rudder system after being subjected to filtering and amplitude limiting; the control parameters of the thrust establishing section and the thrust stabilizing section are the same; and after entering the thrust ending section, correcting control parameters of the thrust establishing section and the thrust stabilizing section, and eliminating control errors caused by thrust uncertainty of the thrust ending section.

The present invention relates to the field of laser interferometer measurement technology, and discloses a large-length dynamic calibration device based on synchronous measurement of a laser interferometer, comprising a base, a support frame is arranged on the top of the base, a fixed block is fixedly connected to the top of the base and the bottom of the support frame, a docking block 1 is fixedly connected to one side of the fixed block, a docking block 2 is fixedly connected to one side of the fixed block, a rotating column is rotatably connected inside the docking block 2, a connecting rod is fixedly connected to the outer wall of the rotating column, one end of one connecting rod is rotatably connected to another connecting rod, a slider is rotatably connected inside the connecting rod, and a limiting block is arranged between the docking blocks 1. Through the cooperation between the docking block 1, the connecting rod and the limiting block and other components, an efficient double-layer shock-absorbing and buffering effect is achieved, so that the vibration energy is absorbed and dissipated layer by layer through the multi-stage buffer structure, which significantly reduces the impact of vibration on the internal structure and performance of the equipment.

The present invention discloses a ground receiving end positioning method based on OTFS modulation enhanced low-orbit satellite opportunity signals, including: obtaining real-time position and speed information of E satellites to obtain first data; modulating E groups of random low-orbit satellite opportunity signals based on OTFS modulation technology to obtain a first signal set; performing satellite-to-ground communication link level simulation based on the first signal set in combination with a signal transmission model to obtain a second signal set; tracking and sampling E satellites according to the second signal set and obtaining sampling signals respectively to obtain a sampling signal set; obtaining Doppler frequency shift measurement values ​​of E satellites based on the sampling signal set in combination with a signal processing algorithm; constructing a positioning equation group based on the first data and the Doppler frequency shift measurement values ​​of E satellites in combination with the Doppler positioning principle; solving the positioning equation group to obtain the position information of the ground receiving end. The present invention also discloses a ground receiving end positioning system based on OTFS modulation enhanced low-orbit satellite opportunity signals.

The invention provides an RIS-UAV network energy efficiency optimization method and device based on reinforcement learning, and relates to the technical field of mobile communication. Comprising the following steps: determining data rates of all time slots of all users according to a Rayleigh channel from an unmanned aerial vehicle to each user and a diagonal reflection phase matrix of an RIS; constructing an optimization problem according to the data rates of all the time slots of all the users, the energy consumption of the base station and the energy consumption of the unmanned aerial vehicle; grouping all the users according to the correlation coefficient channels among the users and a preset threshold to obtain a plurality of user groups; according to the plurality of user groups, the optimization problem and the constraint parameter, determining an optimization problem containing a constraint condition; and according to the diagonal reflection phase matrix of the optimal RIS, a DDQN model in reinforcement learning is used to solve an optimization problem containing constraint conditions, an optimal target ratio is obtained, and an optimal unmanned aerial vehicle flight path is realized according to the optimal target ratio. In this way, the performance of the communication system can be improved, and the energy efficiency of the RIS-UAV can be improved.

The invention relates to the technical field of heat dissipation optimization analysis, in particular to a heat dissipation optimization system for a nonvolatile memory, which comprises a working mode sensing module used for identifying working modes of the memory in real time, including a high-frequency random write-in mode, a high-density read-out mode and a mixed operation mode, generating a heat distribution predictive map based on the working modes, and sending the heat distribution predictive map to the memory; predicting time periods of a high-heat area, a transition area, a low-heat area and an operation hot spot; the heat energy grading regulation and control module adopts a grading heat management strategy, dynamically adjusts the heat dissipation intensity, ensures that heat dissipation resources are concentrated in a high-heat area, and avoids global excessive heat dissipation; and the write annealing effect optimization module is used for designing an active cooling mechanism based on operation interval optimization aiming at local hot accumulation caused by charge retention in the write operation of the nonvolatile memory. According to the invention, excessive or unbalanced global heat dissipation is avoided, the heat dissipation efficiency is obviously improved, the energy waste is reduced, and the extra energy consumption caused by excessive heat dissipation is effectively reduced.

The present invention discloses a circuit board laser cutting device, which relates to the technical field of circuit board processing, and comprises a lower conveyor belt and an up-and-down moving component, wherein an upper conveyor belt is arranged on the top of the lower conveyor belt, and the bottom wall of the fixed part of the upper conveyor belt is fixedly connected with an up-and-down moving component for assisting the movement of loading and unloading materials, and the bottom of the support frame is fixedly connected with a suction cup limiting component for limiting the up-and-down movement, and the bottom of the suction cup limiting component is fittedly connected with a loading fixing component for fixing the loading material, and the middle part of the top wall of the fixed part of the lower conveyor belt is fixedly connected with a laser cutting component for preventing carbonization. The present invention performs multi-point one-time synchronous compression on the circuit board by cooperating with the up-and-down moving component, the suction cup limiting component and the loading fixing component, and limits the front and rear outer walls, left and right sides and vertical height of the circuit board respectively, thereby improving the efficiency of limiting.

The application discloses a kind of active front wheel steering time delay feedback controller parameter time delay feasible region's calibration method, and include steps: 1) the vehicle system model of active front wheel steering feedback controller including time delay is established;2) by constructing Lyapunov-Krasovskii functional, time delay independent stability parameter region is solved;3) by Laplace transform solving system characteristic equation, obtain stability discriminant polynomial;4) it is solved to the minimum critical time delay that can be tolerated under time delay independent stability region and time delay related stability zone under different control parameter combinations of system.This application can provide reference for controller stability design, compared with traditional active front wheel steering controller without considering time delay, can more effectively judge whether system meets stability requirement, and reduce control parameter adjustment range, so as to reduce test cost in actual engineering, guarantee the stability of vehicle control system.

The utility model relates to the technical field of rehabilitation treatment instruments, and discloses a universal ice compress sleeve which comprises a straight sleeve, a side pocket is arranged in the straight sleeve, the side pocket is arranged in a concave shape and divides the straight sleeve to form a semi-surrounding structure, an adjusting belt is arranged on the outer wall of the straight sleeve, and the adjusting belt is connected with the straight sleeve. The adjusting belt is stretched and fixed towards the center of the straight sleeve from the two sides of the side pocket to form a tightness adjusting structure; wherein ice bags are filled in the side pockets. The ice compress sleeve structure capable of being used by hands and feet is formed in a straight barrel mode, the straight barrel sleeve mode can be matched with the structures of the hands and the feet, the ice bag can be disassembled and assembled in a built-in inserting bag mode, the ice bag can be recycled conveniently, and the purpose of single-side ice compress adjustment is achieved; the condition of skin stimulation injury caused by different tolerance degrees of the palm side and the back is reduced, the influence on the ice compress duration and effect of a user is reduced, and meanwhile, the straight sleeve is conveniently replaced to reduce cross infection.

The invention discloses a low-profile multi-frequency vertical polarization antenna integrated structure which comprises a U-band antenna, an L-band antenna, a C-band antenna and feed of the three antennas, a U-band antenna assembly and an L-band antenna assembly are microstrip antennas loaded with short circuit columns and are composed of media and radiation patches, and the U-band antenna assembly and the L-band antenna assembly are microstrip antennas loaded with short circuit columns. The C-band antenna assembly is a short-circuit loaded metal monopole antenna and is composed of a stepped metal structure and a dielectric layer, the three antenna assemblies all adopt short-circuit loading, the height of the antenna is reduced, the U-band antenna, the L-band antenna and the C-band antenna are sequentially overlapped from low to high, the antennas are isolated by loading media, longitudinal integration of the three antennas is achieved, and the antenna structure is compact. Wherein the U-band antenna assembly directly adopts coaxial line feeding at the center of the bottom, the L-band antenna assembly and the C-band antenna assembly are respectively connected with coaxial lines at the other two sides of the bottom through microstrip lines for feeding, and the coaxial lines penetrate through short circuit columns of the antenna, so that the influence on the structure and the performance of the antenna is reduced; the microstrip line is arranged in a dielectric layer between the antennas, and short circuit columns are loaded around the microstrip line, so that energy leakage is reduced. Integration of multi-band antennas is achieved, an effective feeding method is provided for integration of multiple antennas, and meanwhile the antenna has the advantages of being low in profile, easy to achieve and convenient to machine.

The present invention discloses a non-negative pressure pipe network pressurized and steady-flow water supply equipment with a silencing function, which relates to the technical field of non-negative pressure pipe network water supply, including an expansion joint, a water pump and a steady-flow pipe, a pipe is connected to the bottom of the steady-flow pipe, and the two ends of the pipe are respectively connected to the water supply pipe and the resident water pipe through the expansion joint, the steady-flow pipe is annular, the middle part of the steady-flow pipe is connected to a pressurized pipe through a water pump, a noise reduction component is arranged in the middle part of the steady-flow pipe, and shock-absorbing components are arranged at both ends of the steady-flow pipe, and the shock-absorbing components include a guide component, an energy absorption component and an adjustment component. The present invention reduces the intensity and range of noise propagation and reduces the impact on the living conditions of nearby residents through the arrangement of the steady-flow pipe and the noise reduction component, and the guide component and the energy absorption component simplify the shock absorber structure, reduce the movement amplitude of the ring pipe on the guide rod, and the adjustment component improves the working environment of the water pump.

The invention relates to an automatic RASP method and device based on traffic classification and code analysis, equipment and a medium, and the method comprises the steps: carrying out the classification of obtained network traffic data through an incremental learning model, and obtaining normal traffic and abnormal traffic; performing static code analysis on the abnormal traffic to obtain a tangency point selection guide; according to tangency point selection guidance and dynamic code analysis, realizing automatic RASP instrumentation to judge whether the abnormal traffic has malicious behaviors or not; and when a malicious behavior exists in the abnormal traffic, blocking the malicious behavior through the RASP, and reporting the malicious behavior. According to the technical scheme, normal traffic and abnormal traffic are effectively distinguished, the influence of RASP on the performance of a network application program is reduced, and resource loss is reduced; and malicious behaviors are blocked through the RASP, the security of the network application program is monitored, the malicious behaviors are responded in time, and potential attacks are effectively prevented.

The invention relates to the technical field of medium carbon steel and additive manufacturing, and provides novel medium carbon steel for additive manufacturing, a powder manufacturing process of the novel medium carbon steel and an additive manufacturing forming method.The novel medium carbon steel for additive manufacturing is prepared from C, Mn, Si, Cr, P, S, V, Ni, Ti, Cu, Al and Fe; the invention further discloses a powder preparation process of the novel medium carbon steel. The powder preparation process comprises the steps of S1, blank preparation, S2, remelting refining and S3, atomization powder preparation. Components of the novel medium carbon steel suitable for additive manufacturing are provided, metal powder suitable for additive manufacturing can be prepared, a product obtained after additive manufacturing is good in structural strength and has a compact structure and a uniform and fine metallographic structure, the problem that cracks and cracks are prone to occurring in a traditional 3D printing process is solved, and the product quality is improved. The problems that a traditional forging process is not high in strength and not beneficial to lightweight design of products are solved.

The invention relates to the technical field of mineral aggregate treatment, and discloses a mine output waste centralized treatment device which comprises a treatment bin, a lifting machine is fixedly connected to one side of the outer wall of the treatment bin and used for lifting and conveying mineral waste, and a grading mechanism is arranged in the treatment bin and used for conducting volume grading on mineral separated materials; and one side of the outer wall of the treatment bin is fixedly connected with a dust collecting mechanism for collecting dust and sand, one side of the outer wall of the treatment bin is provided with a discharging port, one end of the discharging port communicates with the grading mechanism, and the other end of the discharging port communicates with a recycling mechanism for collecting heavy metal in ore waste. The waste is subjected to volume grading through the grading mechanism, magnetic particles in a particle bin in the recycling mechanism are released according to the size of the waste, matching of the waste and the particle diameter is achieved, heavy metal and the waste are separated more sufficiently, residues of the heavy metal in mineral aggregate are reduced, and the purity and quality of resource recycling are improved.

This invention discloses a foundationless construction system that uses its own weight as a reference for center of gravity adjustment, enabling the external climbing tower crane to be constructed within a shaft. The system employs a movable wedge micro-adjustment structure, where a movable component drives a strip structure to clamp the tower itself, thus adjusting the tower's load-bearing structure. Simultaneously, an arc-shaped plate structure provides bending resistance to the entire plate, minimizing the impact of individual failures of the movable component (i.e., the independent movable wedge) on the clamping action. Furthermore, elastic pads are used to reduce metal fatigue and plastic deformation caused by rigid structural collisions.

The invention relates to the technical field of electrolytic aluminum power supply, and discloses a green ionization grid access absorption energy storage type aluminum electrolysis cell power supply system and method.The system comprises a user side energy storage system connected with a bus, and the access end and the output end of the user side energy storage system are connected with a photovoltaic power generation direct current system and a power supply rectification system respectively; the bus is provided with a first isolating switch group and a fourth isolating switch group which are respectively arranged between the photovoltaic power generation direct current system and the user side energy storage system and between the user side energy storage system and the power supply rectification system, and the access end and the output end of the user side energy storage system are respectively provided with a second isolating switch group and a third isolating switch group; the method controls the on-off of the first to fourth isolation switch groups according to the output current of the photovoltaic power generation DC system. When the change rate of the output current of the photovoltaic power generation direct current system exceeds the accepting range of the electrolytic cell, the first, third and fourth isolation switch groups are closed, the second isolation switch group is disconnected, and the user side energy storage system supplies power. High adaptability is still achieved under the condition that high-capacity direct current is output through photovoltaic power generation, and the working stability of the electrolytic cell is guaranteed.

The present application provides a multi-point collaboratively optimized insulation board cutting method and device, which relates to the technical field of substrate cutting. The method includes: constructing a component characteristic information distribution, optimizing the cutting points, obtaining an optimal cutting point array, and then performing multi-point collaborative cutting optimization on the cutting parameters of multiple optimal cutting points to obtain a cutting parameter combination library with the smallest cutting specification deviation coefficient, obtaining a cutting line component characteristic information distribution by index detection, optimizing the cutting parameter combination within the cutting parameter combination library, and obtaining the optimal cutting parameter combination for cutting the insulation board substrate. The present application can solve the technical problem that the prior art lacks component detection of the insulation board substrate and optimization of the cutting point array, resulting in poor consistency of the composition of the insulation board after cutting, low dimensional accuracy, and further affecting the quality and performance of the insulation board. The cutting parameters can be optimized to reduce the impact of cutting on material properties, thereby improving the overall quality and performance of the insulation board.

The invention discloses a four-motor control system, and relates to the technical field of air compressors. The air compressor comprises four air compressor bodies which are uniformly arranged, an electric control box is arranged on one sides of the four air compressor bodies, a super capacitor is fixedly connected to the interior of the electric control box, a circuit board is fixedly connected to the inner side of the electric control box, a connector is fixedly connected to one end of the circuit board, and a heat exchange box is fixedly connected to the outer side of the electric control box. When starting control of an air compressor body in the super-capacitor industry is utilized to relieve impact on a power grid, a liquid conveying pump and a refrigerating machine are arranged to drive a liquid medium to circularly penetrate through the interior of an annular liquid conveying bin, and the liquid medium and air which is driven by a starting circulating pump to circularly flow between an annular heat exchange bin and an electric control box are subjected to heat exchange cooling; therefore, the influence of high temperature on the working performance of the super capacitor is effectively reduced, the stability and reliability of the system are improved, and meanwhile, the mounting plate and the allochroic silica gel are arranged to effectively dehumidify the air circulating through the air guide pipe.

The invention discloses a bilateral unequal-thickness concrete constraint steel plate shear wall and a construction method thereof. Comprising a steel plate, formworks located on the two sides of the steel plate, a steel plate buckling correcting device used for correcting the bending position of the steel plate, a formwork reinforcing mechanism used for fixing the formworks, and a three-way guide pipe flow dividing pouring device used for adjusting the concrete flow speed on the two sides of the steel plate. The formwork reinforcing mechanism comprises a vertical square steel pipe, a double-channel steel joist located on the outer side of the vertical square steel pipe, and a lead screw assembly penetrating through a gap in the middle of the double-channel steel joist and holes in the formwork and the steel plate. The three-way guide pipe diversion pouring device comprises a three-way guide pipe fixed to an upper opening in the top of the steel plate shear wall, a soft guide pipe connected with two branch pipes of the three-way guide pipe, and adjusting valves installed on the two branch pipes. The device can meet the requirements for flatness and perpendicularity of steel plate installation, meanwhile, the device is simple in structure, easy to operate and capable of being repeatedly turned over, and the problem of steel plate deformation caused by inconsistent side pressure on the left side and the right side of a steel plate is effectively solved.

The invention provides a power supply circuit, a power supply method of components in electronic equipment and the electronic equipment, and relates to the technical field of communication. The controller firstly determines the current output voltage of the power supply end, then determines the target power supply branch to be used according to the relation between the output voltage and the voltage threshold value, and finally controls the power supply end to supply power to the assembly through the target power supply branch. Therefore, the influence of low voltage on the working performance of the component is effectively reduced, the reliability of the power supply method of the component in the electronic equipment is improved, and the user experience is improved.