25results about How to "Realize active control" patented technology

The invention relates to a tunnel secondary lining concrete filling state real-time monitoring system which is characterized in that a secondary lining cavity is defined by a secondary lining template in a tunnel, the system comprises a sensor array located in the secondary lining cavity, the sensor array comprises a plurality of rows of optoelectronic switches distributed in the extending direction of the tunnel, and the optoelectronic switches in the same row are distributed in the circumferential direction of the tunnel; the signal processing and acquisition unit is responsible for supplying power to the photoelectric switch and converting the received signal of the photoelectric switch into a signal displayed by a display; and the data processing and displaying unit is responsible for displaying the signals transmitted by the signal processing and collecting unit on a reality device. The invention aims to provide the tunnel secondary lining concrete filling state real-time monitoring system capable of acquiring the cavity in real time, and the problem that the existing cavity can only be acquired afterwards is solved.

The application discloses a gas turbine, a gas turbine blade and a leaf-shaped film cooling hole structure of the gas turbine blade. The existing traditional cylindrical film cooling hole is reshaped into a leaf-shaped structure including a left half circular arc, a right upper half elliptical arc, a right middle half elliptical arc and a right lower half elliptical arc, so that the cooling gas can be divided into three paths when being sprayed out of the hole, and is sprayed out along the passage secondary flow same direction, the film hole center line direction and the passage secondary flow opposite direction respectively, thereby the blowing-off effect of the passage secondary flow on the cooling film is inhibited, the wall-attaching ability and the along-flow development ability of the cooling film are enhanced, the covering uniformity of the cooling film on the base surface is improved, and the cooling efficiency and the service life of the blade are improved. The leaf-shaped film cooling hole structure has the characteristics of strong functionality and wide applicability, and can be widely applied to the cooling technical field of the gas turbine blade of an aero-engine or a ground gas turbine.

According to the variable-flow IGBT evaporative cooling system and the control method provided by the invention, dryness online calculation and closed-loop control based on pressure and density signals are introduced into the IGBT evaporative cooling system, so that accurate sensing and active regulation and control of a phase change state of a cooling medium are realized; therefore, it is ensured that the IGBT module is always in a gas-liquid mixing environment with the optimal heat exchange efficiency, the efficient heat dissipation capacity of phase change latent heat is fully utilized, local overheating or temperature fluctuation caused by excessive evaporation or insufficient liquid phase is avoided, the heat dissipation uniformity, stability and energy efficiency are fundamentally improved, and the heat dissipation efficiency is improved. The self-adaptive capacity of the system to different load working conditions is enhanced, and the guarantee is provided for long-term reliable operation and service life prolonging of the IGBT module through direct control over the key state quantity of dryness.

This invention belongs to the field of precision machining technology, and discloses a structured contact wheel belt grinding device and control method with flow pressure regulation. It has the function of grinding structured surfaces of various sizes with the same structure, including a support structure and a structured surface grinding actuator. The support structure includes a base plate, ribs, a motor fixing component, and an electric actuator support. The structured surface grinding actuator includes a drive motor, a motor connecting shaft, a drive wheel, a sanding belt, a tension wheel, a tension wheel bracket, a tension wheel bracket fixing component, a guide wheel assembly, a guide wheel assembly bracket, an electric actuator, a force sensor mounting flange, a force sensor, a contact wheel frame fixing component, a contact wheel frame, a structured contact wheel, a ring clamp, hydraulic oil lines, and an electro-hydraulic servo valve. This invention is mainly used for structured surface belt grinding. It adjusts the hydraulic system loading parameters according to the real-time changes in grinding force during the grinding process to control the internal flow pressure of the structured contact wheel, thereby meeting the stable processing requirements of structured surfaces of different sizes.

The invention discloses a TBM double-track tunnel trackless transportation cross-line bypassing cushion layer rapid construction method, and belongs to the technical field of tunnel construction. According to the method, a construction area is divided into a plurality of construction sections in the longitudinal direction of a tunnel, construction and transport vehicle framing and side alternate operation is organized, and parallel cushion layer pouring and trackless transport are achieved; the method comprises the following steps of: performing radar detection and scabbling treatment on the top surface of an inverted arch block during construction preparation; installing a steel plate water stop belt, and penetrating through the ground beam and the drainage blind pipe; a detachable steel pipe is adopted for shaping and constructing a cushion drainage ditch; after a reinforcing mesh is laid, concrete pouring, multi-pass surface finishing, steam and heat preservation curing and temperature and humidity monitoring are conducted; by optimizing the construction organization and technology, the problems that transportation is interrupted, the construction period is long and cracking is prone to occurring in a traditional method are solved, efficient, high-quality and low-interference cushion layer construction is achieved, optimal construction parameters can be scientifically screened by setting a contrast test section, and adaptability is high.

This invention relates to a fixed-point micro-environment control spraying method for bridge bearing maintenance, specifically in the field of bridge maintenance construction. By multimodal fusion perception of the micro-environment on the surface of the bridge bearing, a precise digital state representation is constructed. Based on this, a deep reinforcement learning model is driven to generate optimized spraying parameters. Robustness verification and reinforcement are then performed through digital twin simulation. Finally, a feedforward compensation closed loop based on real-time online detection is introduced in the physical execution, thereby achieving intelligent adaptation and active control of the complex, non-uniform, and dynamically changing micro-environment of the bridge bearing. This ensures that the anti-corrosion coating can still obtain uniform, stable, and highly adhesive film quality under various harsh field conditions, significantly improving the reliability, economy, and long-term protective effectiveness of maintenance operations.

The invention discloses a method for achieving additive manufacturing high-temperature alloy grain supernormal coarsening based on seed crystal guided directional recrystallization heat treatment, and relates to a coarsening method for additive manufacturing high-temperature alloy grains. The invention aims to solve the technical problem of insufficient high-temperature creep property caused by small grain size of the existing additive manufacturing nickel-based high-temperature alloy. According to the method, the single crystal layer with target orientation, namely the seed crystal, is prepared in the additive manufacturing stage, then the grain boundary of the seed crystal is continuously heated through the electromagnetic induction coil in the subsequent heat treatment, forced recrystallization is carried out by taking the seed crystal as a unique or absolute dominant growth source, namely oriented recrystallization is carried out, so that the growth of other crystal grains is inhibited, and the yield of the product is improved. And finally, an ultra-large grain structure with the seed crystal as the main source is obtained in the additive component, the average grain length of the ultra-large grain structure can be increased by two or more orders of magnitude compared with the original additive state and reaches the millimeter level or even the centimeter level, and the crystal orientation is highly consistent with the preset seed crystal orientation.

The utility model discloses spoke end conical sheet adhering equipment which is used for adhering a conical sheet to the end of a spoke and comprises a machine frame, a driving device and a driving device. The adhesion assembly is arranged on the rack and is provided with a placing part and a pressing head; the placing part is suitable for flatly placing the conical sheet; the pressing head is positioned above the placing part and is suitable for reciprocating along a vertical first direction relative to the rack; the displacement assembly is arranged on the rack and is provided with a containing groove and a displacement mechanism; the containing grooves are suitable for containing the spokes and enabling the ends of the spokes to be exposed in the second direction, and the second direction is perpendicular to the first direction. The displacement mechanism drives the spokes to do reciprocating motion in the first direction, so that the spokes are located on the placing parts and adhere to the conical sheets; and the pressing head moves downwards and presses the end part of the spoke after the conical sheet is adhered to the end part of the spoke. According to the adhesion equipment, the conical sheets can be automatically adhered to the ends of the spokes, the production efficiency is improved, and the labor cost is reduced.

The utility model relates to the technical field of wind turbine generator unit, especially a kind of wind turbine generator unit yaw system vibration calibration and stabilizing device, it include: yaw pedestal and vibration calibration mechanism, wherein: yaw pedestal, top is equipped with annular guide rail, annular guide rail inner side wall is opened with tooth slot, multiple guide posts are set at the edge of yaw pedestal with equal angle, guide post top end is connected through crossbeam, displacement sensor is embedded in the middle part of crossbeam;Vibration calibration mechanism includes the sliding block with the sliding fit of annular guide rail, the top of sliding block is fixed with bearing table, and driving motor is installed at the center of bearing table bottom surface, and driving motor output shaft is connected with the driving gear meshing with tooth slot, and bearing table top surface four corners are equipped with damping shock absorber, and damping shock absorber top end is connected with calibration platform, and calibration platform side is fixed with the guide sleeve sliding fit with guide post, and vibration calibration mechanism is installed with stabilizing component;It enhances the overall service life of yaw system, improves wind turbine generator unit running stability.

The application belongs to the technical field of tunnel construction, and discloses a shield tunnel end head thaw settlement control method and a control system. The thaw settlement control method comprises the following steps: S1, multiple thaw settlement compensation points are set in the soil layer below the frozen area of the tunnel end head; S2, multiple bags are respectively buried at the multiple thaw settlement compensation points, and settlement monitoring points are uniformly arranged in the soil layer of the frozen area around each thaw settlement compensation point; S3, the settlement data of the soil layer around the corresponding thaw settlement compensation point is monitored in real time by using each settlement monitoring point; S4, when the monitored settlement data reaches a preset trigger condition, a filling mechanism is controlled to inject filling material into the bag at the corresponding thaw settlement compensation point, so that the bag expands to compensate the surrounding soil layer in situ. The application sets multiple thaw settlement compensation points, and does not need to perform secondary drilling construction after thaw settlement occurs, so that the thaw settlement is actively controlled in advance, and the thaw settlement is accurately controlled.

This invention relates to a plasma processing cavity, comprising: a reaction cavity, wherein a support structure for supporting a substrate is disposed in the reaction cavity; a dielectric window located above the reaction cavity, through which a coil array transmits an electromagnetic field to the reaction cavity; and a coil array comprising at least three ICP excitation coils and a phase-shifting coil for interconnecting the ICP excitation coils, wherein the phase-shifting coils cause the currents of different ICP excitation coils to be connected in opposite phases, and the inter-turn currents of the phase-shifting coils are either in phase or out of phase; the total length of all ICP excitation coils and the phase-shifting coils is nλ, where n is a natural number and λ is the wavelength corresponding to the frequency of the radio frequency transmitter, and the total length is the wire length of the radio frequency feed point and the ground feed point.

The present application belongs to the field of flying shear equipment, and discloses a flying shear post double-head active steel-patting device system and method. The system comprises a flying shear and a steel-patting device. The steel-patting device is arranged on the steel tapping side of the flying shear and comprises a driving mechanism and two symmetrically arranged rotary arms. One end of each rotary arm is hinged to a mounting seat through a rotating shaft, and the other end of each rotary arm is provided with a steel-patting surface. The driving mechanism drives the two rotary arms to rotate synchronously. The steel-patting device cooperates with the shearing action of the flying shear. When the flying shear is shearing, the steel-patting surface of the rotary arm moves downward to exert a downward force on the billet head, so that the billet head moves downward along a preset trajectory and deviates from the steel passage, thereby avoiding the billet head from being brought into the guide groove, ensuring the shearing safety, and ensuring the stable production of the rolling line. The length of the shearing section process equipment is effectively reduced, the investment is reduced, and the production is increased.

This reconstruction structure, based on a transmissive phase discontinuity surface, generates a circularly polarized beam, belonging to the field of beam reconstruction. Traditional optical rotation response and beam direction control techniques typically rely on bulky and complex devices to achieve these functions, which not only limits system integration but also reduces signal processing efficiency. The proposed structure comprises an array of n×n integrated layers, of which n types exist. The first, second, and third metal structural layers have elliptical annular cross-sectional shapes. The rotation angles of the first, second, and third metal structural layers on each type of integrated layer are not identical; these angles are the angles between the major axis of the elliptical annulus and the negative direction. The left-hand or right-hand circularly polarized wave phases of the n integrated layers differ by m° sequentially, and the arrangement range of the left-hand or right-hand circularly polarized wave phases of the n integrated layers is from 0 to 2π. This structure is used to generate a circularly polarized beam.

The invention relates to the technical field of wireless communication and multimedia communication, and discloses a cross-protocol-layer packing optimization method for lightweight image transmission of the Internet of Things and related equipment. According to the method, based on an application layer model, an access layer model and a physical layer model, a cross-layer optimization objective function based on a weighted product form is constructed for three sub-indexes of image quality, time delay and energy consumption; constructing a cross-protocol layer model, and solving by optimizing a cross-layer optimization objective function to obtain an optimal package size and optimal transmitting power; calculating a corresponding optimal quantization step size according to the optimal package size; and the Internet of Things node encodes the acquired lightweight image according to the optimal quantization step size, and sends a generated data packet to a receiver at the optimal transmitting power. The method can be applied to the transmission of the lightweight images of the Internet of Things through the random access network, and achieves the flexible balance and collaborative optimization of the image quality, the time delay and the energy consumption.

This invention provides an impedance-controlled wall-climbing robot and an impedance control method. The impedance-controlled wall-climbing robot includes a wall-adhering device and at least one climbing device. The climbing device drives the wall-adhering device to move on the wall surface. The climbing device includes: a climbing component, which includes climbing wheels; a driving component, which includes an elastic driving element with an elastic hollow area, and is drivenly connected to the climbing wheels through the elastic driving element; and a detection component, at least a portion of which is connected to the driving component and is used to detect the rotation angle of the driving component, and at least another portion of which is connected to the climbing component and is used to detect the rotation angle of the climbing wheels. The angle change of the elastic driving element is determined based on the difference between the detected rotation angle of the driving component and the rotation angle of the climbing wheels. This invention solves the problem of difficulty in determining the operating state of wall-climbing robots in the prior art.

The application discloses a longitudinal-vertical control method, system and device for a wheel-legged unmanned platform, and relates to the field of unmanned platform control. The method comprises the following steps: determining an equivalent passive damping system; constructing a longitudinal dynamics system of a wheel-legged system and a vertical dynamics model of the wheel-legged system; respectively acquiring longitudinal key responses and vertical key responses; establishing longitudinal control targets according to the longitudinal key responses; establishing vertical control targets according to the vertical key responses; determining a longitudinal-vertical control target function of the wheel-legged system; determining an active controller based on the longitudinal dynamics system of the wheel-legged system and the vertical dynamics model of the wheel-legged system by using an active control algorithm according to the target function; and equivalently converting the longitudinal active control force and the vertical active control force into joint torque of each wheel leg for control. The application can reduce the vibration negative effect of the unmanned platform caused by large road excitation, and improve the driving safety and stability of the wheel-legged unmanned platform.

This invention discloses a flapping wing structure and aircraft, including a fixed frame, a reciprocating assembly, and flapping wing assemblies. The fixed frame includes a rectangular frame, and the reciprocating assembly can reciprocate along the longitudinal direction of the rectangular frame. Two flapping wing assemblies are symmetrically mounted on opposite sides of the rectangular frame. Each flapping wing assembly includes a flapping wing, a first connecting rod, and a second connecting rod. One end of the first connecting rod is rotatably connected to a side frame of the rectangular frame, and the other end is fixedly connected to the second connecting rod. The second connecting rod and the first connecting rod form an L-shaped structure. One end of the flapping wing passes through the second connecting rod and is fixedly connected to a driven bevel gear. A connecting shaft is rotatably mounted on the first connecting rod, and a driving bevel gear is fixedly mounted at one end of the connecting shaft, meshing with the driven bevel gear. This invention can simultaneously achieve flapping and flipping movements of the wings without requiring additional power, simplifying the drive mechanism.

The application discloses a double-cavity air pressure buffer with controllable reset process, which comprises a buffer system and a limiting system, and the limiting system is connected with the buffer system through a clamping pin base and a thrust bearing which are matched with each other; the buffer system comprises an outer cylinder, an inner cylinder, a piston rod, a separation valve, a reset spring, an upper end cover and a lower end cover; the end, which is in contact with the inner cylinder, of the outer cylinder is respectively provided with an inwardly-contracted protrusion and an outwardly-expanded protrusion; the outer surface of the outer cylinder is provided with an outwardly-expanded circular table structure; the outer cylinder is uniformly provided with six air holes; and the piston rod is provided with four evenly-distributed damping holes. The application can limit the reset movement of the buffer after the buffer is compressed by impact, reduce the shaking and shaking after the buffer process is finished, and realize the active control of the reset process of the buffer; the double-cavity design with adjustable high-pressure chamber pressure enables the buffer to still have good buffering capacity under different loads, and widens the working range of the buffer.

The invention belongs to the technical field of intelligent manufacturing of high-end equipment, and discloses an intelligent machining device for a crane crankshaft journal. Comprising a numerical control machine tool, and a control panel, a positioning mechanism, a cooling mechanism, a power mechanism, a machining mechanism and a numerical control mechanism which are arranged on the numerical control machine tool, and further comprises a machining unit arranged on the numerical control machine tool. Through the constant force floating head and multi-sensor feedback, the system can automatically compensate geometric errors and physical interference, the optimal cutting state is maintained in the fluctuation environment, and the size precision, roundness and surface integrity of the journal are remarkably improved; through a closed loop of a distributed limiting mechanism and a vibration sensor, real-time monitoring and active control over vibration of a workpiece-cutter system are achieved, the chatter problem in the large crankshaft machining process is effectively solved, the machining quality is improved, and the service life of a cutter is prolonged.

The application discloses a spacecraft active thermal protection control method, device, equipment, medium and product, and relates to the technical field of spacecraft thermal management. The method comprises the following steps: acquiring real-time thermal environment data outside a spacecraft; predicting the heat flow change trend of the outside of the spacecraft in a preset time period based on the real-time thermal environment data; and generating a regulation instruction for a heat dissipation execution component arranged outside the spacecraft according to the heat flow change trend, wherein the heat dissipation execution component comprises a porous zeolite matrix in which a liquid phase change working medium is stored, and the regulation instruction is used for controlling the transport process of the liquid phase change working medium in the porous zeolite matrix and the vaporization process of the liquid phase change working medium on the surface layer of the porous zeolite matrix. The method can realize active control of thermal protection.

The utility model provides a kind of dynamic response pipe shed device of controlling stratum subsidence, comprising: pipe shed steel pipe, pipe shed steel pipe surface distribution grouting hole, tail part installs grouting valve, each section pipe shed steel pipe head welding grouting independent closed groove, grouting independent closed groove is equipped with joint;Pipe shed steel pipe inner wall closely fiber bragg grating sensor, extend pipe shed steel pipe tail and fiber bragg grating monitor are connected, hollow part erects partition grouting pipe bundle, by clamp fixed position;Partition grouting pipe bundle is connected in pipe shed steel pipe tail with partition grouting valve, close grouting independent closed groove joint area installs tee, by grouting hose and joint are connected;After grouting is completed, fiber bragg grating sensor will pipe shed strain data be transmitted to fiber bragg grating monitor and be analyzed, according to the analysis result, specific area is carried out accurate, quantitative, low pressure compensation grouting.The utility model's device carries out accurate grouting compensation strategy to high-risk area, avoids grouting deficiency, and timely carries out dynamic response to stratum subsidence.

The application discloses an intelligent feeding device and method based on low-soap emulsified antioxidant styrene-butadiene rubber production and relates to the technical field of rubber production. The intelligent feeding device comprises a mixing module, and a feeding mechanism is arranged above the mixing module to realize low-shear, impact-free and uniform dispersion of the antioxidant emulsion into the latex. The feeding mechanism comprises an antioxidant feeding unit arranged at the top of the mixing module. The antioxidant emulsion slowly penetrates into the latex in the form of extremely small droplets through the microporous tube in the antioxidant feeding unit, replacing the traditional mechanical stirring or high-pressure injection mode. The dispersion mode provided by the microporous tube hardly produces turbulent shear and high-speed impact, and the technical problem that the conventional mode causes the particle rupture and coalescence to form gel under the condition of low soap due to the strong shear force to destroy the thin emulsifier layer on the surface of the latex particles is solved from the root, thereby affecting the product quality and blocking the equipment.

The invention relates to the technical field of electrochemical water treatment, in particular to a cathode for electrochemical water treatment, an electrochemical water treatment system and a hardness removal method for industrial wastewater. The cathode comprises a cathode substrate and an electromagnet integrated on the cathode substrate; the electromagnet is used for generating a gradient magnetic field near the working surface of the cathode substrate and controlling the gradient magnetic field to be opened and closed; and the gradient magnetic field is used for attracting the magnetic particles to form an attachable and detachable functional layer on the working surface of the cathode substrate. According to the cathode, the capacity of actively generating and withdrawing the gradient magnetic field on the surface of the electrode is obtained by integrating the electromagnet on the substrate. A functional layer composed of magnetic particles can be formed on the surface of the electrode according to needs, and after load deposition of the functional layer is completed, the functional layer can be integrally removed from the surface of the cathode by removing the magnetic field. Therefore, a deposition interface is converted from an electrode surface to a periodically replaceable consumable interface. Therefore, the scaling risk and the cleaning and maintenance difficulty on the surface of the cathode are reduced, and the service life of the cathode is prolonged.

This application provides a control method and electronic device for a liquid cooling system, which can be applied to the field of heat dissipation technology. The control method includes: determining the load level information of the electronic device within a target time period based on performance index data; preprocessing the target data to obtain multiple sub-target data frames; performing linear prediction encoding on each of the multiple sub-target data frames to obtain multiple sub-linear prediction coefficients; matching benchmark data from a preset health benchmark library based on the load level information; comparing the multiple sub-target data frames and multiple sub-linear prediction coefficients with the matched benchmark data to determine the residual energy and coefficient distance corresponding to the target data; determining health indicators based on the residual energy and coefficient distance corresponding to the target data; generating early warning information based on the health indicators and a preset health threshold; and using the early warning information to prompt control operations corresponding to the early warning information on the liquid cooling system.

The invention provides a mixer with adjustable inner and outer culvert areas, and belongs to the technical field of aero-engines, the mixer is mounted in a mixing diffusion section of an afterburner, an area between the mixer and an inner cone cavity forms an inner culvert channel, and high-temperature fuel gas discharged after a turbine is filled in the inner culvert channel; an outer culvert channel is formed in a region between the mixer and the casing, and oxygen-enriched low-temperature gas behind the fan is filled in the outer culvert channel; the mixer comprises a polygonal mounting ring, a driving source, a driving piece and multiple sets of driven pieces, one end of the polygonal mounting ring is fixed to the front engine structure, the other end of the polygonal mounting ring is movably connected with the driving piece and the driven pieces, the driving piece is connected with the driving source, and the multiple sets of driven pieces are movably connected in parallel. The two driven pieces located on the edge are movably connected with the two sides of the driving piece respectively, and the driving piece and the driven pieces are connected to form an expandable and contractible circular ring structure. The working envelope of the afterburner is effectively widened, and the working performance of the afterburner under the wide speed range condition is improved.