24results about How to "Simple control method" patented technology

The invention relates to the technical field of preparation of lead-free metal halide scintillator crystal powder, and particularly discloses chlorine zirconium cesium crystal powder for a composite scintillator and a confinement growth method of the chlorine zirconium cesium crystal powder. The cesium zirconium chloride crystal powder is cesium zirconium chloride-gas phase oxide composite powder formed on the micro-nano scale by means of in-situ crystallization, and the cesium zirconium chloride crystal powder is composed of 50-95.3 wt% of cesium zirconium chloride and 4.7-50 wt% of gas phase oxide. The preparation method comprises the following steps: preparing zirconium chloride-gas phase oxide powder, preparing a cesium chloride solution, mixing zirconium chloride-gas phase oxide slurry, and growing chlorine zirconium cesium crystal powder in an in-situ crystallization confinement range. The cesium zirconium chloride crystal powder prepared by the method has the advantages of adjustable particle size, stable suspension and efficient scintillation luminescence performance, solves the problem of crystal powder-polymer phase separation in a composite scintillator, and can be used for large-scale preparation of the composite scintillator in the field of radiation detection.

The invention discloses a grain size control method of a reclaimed material hard alloy, which comprises the following steps: S1, component analysis of the reclaimed material: the proportion of oversize products is 0-8% when the reclaimed material passes through a 110-120-mesh sieve; s2, burdening according to the use ratio of the reclaimed material being 50%-99% and the ball-to-material ratio being (2-5): 1, carrying out a ball milling test, preparing a sample, and detecting the coercive force; s3, the raw material ratio and the ball-to-material ratio are equal to those in the step S2, and a mixture is obtained through batching and ball milling; s4, the mixture is subjected to compression molding, and a pressed blank is obtained; and S5, the pressed blank is subjected to pressure sintering, and the reworked material hard alloy with the grain size being 2.0-3.0 microns is obtained. The method is simple and easy to implement, the grain size of the regenerated material can be accurately judged, the integrity and uniformity of alloy grains can be ensured, the prepared regenerated hard alloy has good physical performance, the performance very close to that of a raw material alloy can be achieved, and the application field of the regenerated hard alloy is widened.

The application discloses a robot, a neck structure of the robot and a motion control method of the robot. The neck structure of the robot is connected between a head and a body of the robot, and comprises a base for connecting the body of the robot, a top base for connecting the head of the robot, a connecting rod unit rotatably connected between the base and the top base, a driving unit for outputting driving force, and a transmission mechanism arranged between the base and the top base. The transmission mechanism transmits the driving force of the driving unit to the base and / or the top base to drive the head to rotate, pitch and extend outward. The driving unit and the transmission mechanism are one-to-one arranged in three sets. Each transmission mechanism comprises a first transmission unit and a second transmission unit. The first transmission unit transmits the driving force of the driving unit to the second transmission unit to make the second transmission unit extend and retract. The driving unit is located outside the second transmission unit. The neck structure of the robot can drive the head of the robot to rotate, pitch and extend outward, so that the bionics degree of the robot is improved.

This invention provides an organic eutectic material with a controllable charge-transfer exciton diffusion coefficient and its preparation method. The molecular formula of this organic eutectic material is (TSB). x (TSB-Br) 1‑x (TCNB)2, wherein TSB is trans-1,2-stilbene, TSB-Br is trans-4-bromostilbene, TCNB is 1,2,4,5-phenylenetetraacetonitrile, and x is the proportion of TSB molecules. The organic eutectic material prepared by this invention has a regular morphology, high crystallinity, and exhibits both strong and delayed fluorescence emission, with continuously tunable diffusion coefficients for singlet and triplet charge-transfer excitons. The preparation method described in this invention has advantages such as low raw material cost, mild conditions, and simple operation. The prepared (TSB)2... x (TSB-Br) 1‑x (TCNB)2 organic eutectic materials have potential applications in fields such as imaging, photoelectric conversion, and spintronics.

This invention discloses a fuzzy PID control method for suppressing the rebound of a tethered towed system, belonging to the field of spacecraft dynamics and control. The implementation method involves: constructing a simplified model of the tethered towed system; introducing fuzzy control into the PID control; and calculating the control force to be applied to the tether by observing the error and rate of change between the distance between the tether and the space debris and the desired distance. This control force is then applied to the tether to actively control the tethered towed system, bringing the distance between the tether and the space debris closer to the desired state, thus suppressing the rebound of the tethered towed system. This invention can calculate the control force to be applied to the tether simply by observing the error and rate of change between the distance between the tether and the space debris and the desired distance, offering advantages such as simple control method, low computational load, high operability, and strong robustness. This invention can suppress the rebound of the tethered towed system, ensuring its safe and stable operation.

The present application relates to the technical field of polymer porous film material preparation, and particularly relates to a pore structure wet-dry stretching regulation method and application of an ultrahigh molecular weight polyolefin microporous membrane. The method comprises an extrusion-wet stretching-dry stretching process of three steps of low-temperature casting, wet stretching, heat setting, extraction and dry stretching, and is supplemented by heat setting, filler, casting pulling and other means to jointly regulate the pore size. The ultrahigh molecular weight polyolefin microporous membrane obtained by the above method is applied to a porous base film of a supercapacitor separator, a waterproof and breathable film, a radiative cooling film, a semiconductor precision filtration film, a seawater desalination film, a thermal management film or a proton exchange membrane. In the forming process of the ultrahigh molecular weight polyolefin microporous membrane, the wet stretching process and the dry stretching process are coupled in the transverse / longitudinal direction to perform asynchronous stretching, so as to regulate the pore size, distribution and pore structure, and realize the cross-scale regulation of the pore size. The method is simple and easy to implement and is suitable for large-scale industrial production.

This invention provides a method, production process, and resulting steel for controlling cracks in AH36 ship plate steel billets. The steps include: adding molten iron and a first scrap steel to a converter for smelting, with the final temperature of the converter smelting reaching 1590-1610℃, to obtain molten steel; sending the molten steel to an LF furnace for refining, adding a second scrap steel during the refining process, the amount of the second scrap steel being 10-15% of the weight of the molten steel, to obtain refined molten steel; sending the refined molten steel to a continuous casting machine for casting, with a casting speed of 1.3-1.5 m / min, to obtain a billet; after heating in a heating furnace, the billet is sequentially rough-rolled and finish-rolled, followed by cooling, straightening, and finishing treatment to obtain the AH36 ship plate steel. The control method of this invention is simple and easy to operate. By effectively controlling the content of each element, the generation of cracks is reduced, thereby improving production efficiency and reducing production costs.

The present application relates to the field of vacuum heat sealing, in particular to a vacuum wet extraction heat sealing control method of a textured vacuum bag and a vacuum heat sealer, first, taking the rated speed of the vacuum pump motor as the benchmark N0, setting the starting speed of the vacuum pump motor as N1, the speed of N1 is lower than the speed of N0, driving the vacuum pump to extract vacuum for the textured vacuum bag at the starting speed N1; using a linear pressure sensor to replace a pressure switch to monitor the pressure change of the vacuum cavity in real time, presetting a unit time T and a corresponding preset pressure change value P, when the linear pressure sensor detects that the pressure change value in the vacuum cavity is greater than P within the time range of T, stopping vacuum extraction, and starting the heat sealing bar to heat and seal at the same time; starting vacuum extraction again in the last second of heat sealing, increasing the vacuum degree of the vacuum cavity, forcing the machine to be buckled tighter to enhance the pressure on the bag opening, seal better, and effectively improve the sealing effect of the food containing liquid.

A power following control method based on altitude adaptive change, comprising the following steps: adaptive calculation of engine matching power with altitude change; adaptive calculation of generator equivalent output power with altitude change; power following matching control of the whole vehicle power system according to the engine matching power, the equivalent output power of the generator and the SOC value of the vehicle battery. The control method can realize smooth output and stable maintenance of vehicle energy in complex environment, to adapt to the power matching design requirements of energy system in dynamic environment.

The present application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof. The air conditioner comprises two air outlets arranged in a vertical direction. The control method comprises: obtaining a temperature difference between a first height and a second height in a room to obtain a first temperature difference; in response to the first temperature difference being greater than or equal to a preset difference value and the air outlet angles of the two air outlets not being the maximum downward angle, controlling the air outlet angles of the two air outlets to be adjusted downward by a preset angle and operating for a first preset time; returning to the step of obtaining the first temperature difference until the air outlet angle is the maximum downward angle or the first temperature difference is less than the preset difference value, and maintaining the current air outlet angle. In the heating operation process of the air conditioner, when the temperature difference between the upper and lower parts of the room is large, the air conditioner preferentially adopts a step-by-step increase in the downward air outlet angle to reduce the temperature difference between the upper and lower parts of the room. The control method is simple and easy to operate, and can improve the uniformity of the temperature in the room, thereby improving the user experience.

The application discloses a preparation method and application of ethylene-vinyl acetate copolymer with dynamically regulated molecular weight and distribution, and relates to the technical field of ethylene-vinyl acetate copolymer. According to the chain transfer constant, the solvent is divided into three categories through a solvent classification and selection strategy, high and low activity initiators are matched, and different EVA is prepared through dynamic regulation of the adding time of the multi-phase solvent and monomer gradient feeding in three processes, so that the GPC peak type, molecular weight and distribution of the EVA are accurately regulated. The selection of the solvent is changed from a passive reaction medium role to an active 'performance regulator', the performance of the EVA can be systematically optimized, and the performance of customized EVOH material is realized.

The application provides a hot base zinc-aluminum-magnesium differential thick plating layer control method, and belongs to the technical field of metal material processing; the method comprises plate shape pretreatment on a hot-rolled base plate, the plate shape pretreatment comprises scale breaking treatment and flattening treatment, so that the transverse thickness difference, longitudinal flatness and residual stress of the base plate after the pretreatment are controlled within a specific range; the strip steel after the plate shape pretreatment is subjected to heating reduction and hot dip plating; the strip steel after the hot dip plating is vertically led out of the plating solution and passes through air knives; the blowing pressures of the front air knife and the rear air knife are set to be the same, the spacing between the front air knife and the lower surface of the strip steel and the spacing between the rear air knife and the upper surface of the strip steel are set to be different, and the plating layer thickness difference between the upper surface and the lower surface is controlled by adjusting the spacing difference. The application realizes the differential control of the plating layer thicknesses of the upper surface and the lower surface of the strip steel by combining the plate shape pretreatment before entering the pot with the air knife same-pressure different-spacing regulation, so that the plating solution consumption is saved and the product surface quality is improved.

The invention discloses a regionally structured polymer chain with asymmetric monomers as elements on a solid surface and a synthetic method thereof, and the synthetic method comprises the following steps: taking a metal substrate, cleaning the metal substrate, placing the cleaned metal substrate in an ultrahigh vacuum environment, preheating the metal substrate to a temperature of 300-580K, and maintaining the temperature for a period of time; the asymmetric monomer is deposited on the preheated metal substrate, the deposition distance, time and temperature are controlled, heating is stopped immediately after deposition is completed, and cooling is conducted; and rapidly cooling the substrate to a liquid nitrogen temperature to obtain the regional regular polymer chain. The synthesis method is simple, synthesis of an asymmetric polymer chain with a regular region is realized only by depositing asymmetric molecules on a solid surface and regulating and controlling deposition conditions and surface temperature, an asymmetric covalent polymer chain with high coverage is obtained, a covalent product is clear in structure, a connection structure of each molecule can be distinguished, and the method is suitable for industrial production. The method has wide application in the aspects of single-molecule research, regulation and control of preparation of complex polymers and the like.

The application provides a control method, a control device, a control system and a storage medium of an air conditioner. The control method comprises the following steps: obtaining device information of a user terminal; obtaining target device information in a running area of the air conditioner according to the device information; and regulating and controlling the air conditioner according to the target device information. With the progress of science and technology, people's life and work are more and more inseparable from mobile phones, and the mobile phones also become the daily life of people's personal carrying articles. The application regulates and controls the air conditioner based on the device information of the user terminal, and the user terminal comprises a mobile phone of a user. The application obtains the device information of the user terminal, and then obtains the target device information in the running area of the air conditioner according to the device information, so that the accuracy of the air conditioner control method is increased. The information of the user change in the running area of the air conditioner can be recognized in time according to the device information of the user terminal, intelligent control of the air conditioner is formed, and the purpose of energy saving is achieved.

The application provides a control method of a new energy station network construction type converter, a converter, a medium and a program product. A converter of a first generator set in multiple generator sets of a new energy station adopts network construction type control. The control method comprises the following steps: collecting first grid connection point data of the first generator set, a voltage amplitude instruction, an active power instruction, second grid connection point data of a second generator set; determining a reactive power deviation; obtaining a virtual internal electromotive force amplitude according to the reactive power deviation, the voltage amplitude instruction and a grid connection point voltage amplitude in the first grid connection point data; determining a PWM modulation voltage instruction according to the virtual internal electromotive force amplitude and a phase of a virtual internal electromotive force; and performing spatial vector modulation on the PWM modulation voltage instruction to generate a driving signal. The control method provided by the application solves the contradiction between voltage support strength of a network construction type control unit and self grid connection small disturbance stability, and a transient circulating current problem existing in a dynamic voltage regulation process of the unit.

The present application relates to the technical field of metal powder material preparation, and particularly relates to a porous silver powder, a preparation method and application, by introducing a carbonate foaming agent into raw materials, the carbonate foaming agent can react with nitric acid generated in a liquid phase reduction process of silver nitrate and a reducing agent to generate carbon dioxide bubbles, and the carbon dioxide bubbles play an inducing role in a silver microcrystal formation process, so that the generated silver powder has a rich pore structure and a high specific surface area. Compared with the porous silver powder in the prior art, the porous silver powder has a higher specific surface area and sintering activity, by controlling the addition amount of the foaming agent, the pore structure, the specific surface area and the sintering activity of the silver powder can be accurately controlled, and the control method is simple, and the problems of low pore structure and high cost in the preparation of the porous silver powder in the prior art are solved.

The present disclosure discloses an integrated computing device, a machine learning operation device, a neural network chip, a board card, an electronic device and a method. The integrated computing device can be included in a combined processing device, which can also include an interface device and other processing devices. The integrated computing device interacts with other processing devices to jointly complete a user-specified computing operation. The combined processing device can also include a storage device connected to the integrated computing device and the other processing devices, respectively, for storing data of the integrated computing device and the other processing devices. The scheme of the present disclosure can start and / or stop the circuit according to the preset rule, avoiding the problem of excessive instantaneous current caused by simultaneous starting.

The invention discloses a power regulation and control method for precise coupling of scanning vector length and energy density of a two-dimensional cross section in additive manufacturing. A laser energy density dynamic regulation and control strategy for coupling regulation and control of the scanning vector length and the laser energy density is adopted to prepare a two-dimensional variable cross section complex component in a layer-by-layer accumulation mode. In the forming process, according to the laser energy density dynamic regulation and control strategy, the scanning vector length serves as a minimum regulation and control unit, the laser power is regulated and controlled in real time according to different scanning vector lengths corresponding to different sections obtained by slicing the two-dimensional variable cross-section complex component, laser energy density input is controlled till the last layer is deposited, and printing is completed. Therefore, the purposes of improving the forming quality, linearly controlling technological parameters, effectively inhibiting defects and integrally forming complex components with high precision can be achieved.

The present application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof. The air conditioner comprises two air outlets arranged in a vertical direction. The control method comprises: obtaining a temperature difference between a first height and a second height in a room to obtain a first temperature difference; in response to the first temperature difference being greater than or equal to a preset difference value and the air outlet angles of the two air outlets not being the maximum upward angle, controlling the air outlet angles of the two air outlets to be adjusted upward by a preset angle and running for a first preset time; returning to the step of obtaining the first temperature difference until the air outlet angle is the maximum upward angle or the first temperature difference is less than the preset difference value, and maintaining the current air outlet angle. In the cooling operation process of the air conditioner, when the temperature difference between the upper and lower parts of the room is large, the air outlet angle is gradually increased to reduce the temperature difference between the upper and lower parts of the room. The control method is simple and easy to operate, and can improve the uniformity of the room temperature, thereby improving the user experience.

The application discloses a kind of H-MMC motor drive system comprehensive control method of same frequency operation.The H-MMC motor drive system includes: H-MMC, permanent magnet synchronous motor and AC power grid;System comprehensive control method of same frequency operation is mainly composed of compensation phase angle calculation, motor side speed control, grid side power control, bridge arm submodule voltage stabilization and voltage equalization control and modulation wave calculation 5 parts;The application gives the topological structure of H-MMC motor drive system, adjusts motor phase angle by real-time calculation compensation phase angle, to control H-MMC bridge arm difference frequency power tends to zero;Greatly reduce the requirement of circulation and neutral point voltage, without increasing controller, to realize the stable operation of system under same frequency working condition, with the advantages of small submodule capacitor voltage ripple, small loss, relatively simple control when same frequency operation.

This application relates to the field of power electronics control technology, and discloses a multilevel converter topology and control method. The topology includes a six-level hybrid clamp converter topology or an eight-level hybrid clamp converter topology. The control method includes a phase-locked synchronization control loop, a power control loop, a total DC voltage balancing control loop between upper / lower arm power submodules, a voltage equalization control loop for each voltage divider capacitor, and a pulse width modulation and pulse signal generation loop. This application achieves voltage balancing between the total voltage of the hybrid clamp power submodule and each voltage divider capacitor. By combining the multilevel hybrid clamp power submodule with the flying capacitor power submodule, the topology is simple to implement, highly scalable, requires fewer power devices, has a simple control method, and achieves voltage self-balancing for the voltage dividers. It enables direct connection at medium and high voltage levels and can be widely promoted and applied in medium and high voltage distribution networks, energy storage converters, transformer interconnection, and flexible DC transmission, with a broad market potential.

The utility model provides a heat pump system for recovering waste heat of cooling water of a power plant, which comprises a heat pump main body, an evaporator is arranged in the heat pump main body, a heat dissipation assembly for dissipating heat of the evaporator is further arranged in the heat pump main body, a driving assembly is inserted in the side wall of the heat pump main body in a penetrating manner, and the driving assembly comprises a driving piece. The driving part is detachably connected to the side wall of the heat pump body and fixedly connected with a bearing rod, the other end of the bearing rod is fixedly connected to the inner side wall of the heat pump body, the side wall of the bearing rod is movably connected with a movable block, the bottom end of the movable block is fixedly connected with a heat dissipation assembly, and a plurality of guide rods for guiding the heat dissipation assembly are inserted into the inner side wall of the shell in a penetrating mode. A plurality of sliding grooves are formed in the side wall of the bearing rod, the movable block reciprocates in the sliding grooves, the device is guided through the sliding grooves, excessive collision caused by a gear and a rack is not needed, and therefore noise pollution is reduced, equipment abrasion is reduced, and the service life of the device is prolonged.

The application relates to a surgical instrument and an actuator thereof, the actuator comprising a fixed base, a first clamping sheet and a second clamping sheet, the first clamping sheet and the second clamping sheet being oppositely arranged and connected to the fixed base, the actuator further comprising a push knife, a connecting shaft, a base rotating shaft, a first connecting assembly and a second connecting assembly, the push knife being connected to the first connecting assembly and capable of linear motion under the push / pull of the first connecting assembly to control the opening and closing of the actuator, the connecting shaft being hinged to the second connecting assembly and capable of rotary motion around the base rotating shaft under the push / pull of the second connecting assembly to control the pitching of the actuator. The actuator of the application can be flexibly pitched and opened and closed through the push of the two connecting assemblies, and can bear a larger tensile and compressive force.

The application discloses a large-thrust electric vibration table anti-unbalanced load adjusting device, which comprises a table body, a supporting platform connected to the upper part of the table body through a lifting cylinder, a first moving platform capable of moving horizontally connected to the supporting platform through a first moving platform assembly, a second moving platform capable of moving longitudinally connected to the first moving platform through a second moving platform assembly, four weighing sensors arranged in a square shape with the center line of the second moving platform as the center arranged on the second moving platform, a detection object placing platform mounted on the upper part of the weighing sensors, and a moving coil arranged at the center of the table body, wherein the upper part of the moving coil is sequentially connected with the detection object placing platform through the supporting platform, the first moving platform, the second moving platform and the detection object placing platform, so that the weight and the gravity center position of the measured object can be detected, and the gravity center position can be automatically adjusted to the center line of the moving coil, thereby avoiding the unbalanced load phenomenon.