13results about How to "Simple control method" patented technology

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 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 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 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 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.

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.