19results about How to "Avoid design" patented technology

The invention discloses a hydraulic arm safety control method and device based on parallel learning and a high-order CBF, and the method comprises the steps: building a kinetic equation of a hydraulic mechanical arm through a Lagrange method, integrating unmodeled dynamics, structural parameter change and external interference into an uncertain item, and describing the generalized uncertainty of the uncertain item in a linear parameterization form; for the problem of insufficient excitation in a complex environment task, a parallel learning mechanism is introduced, and historical data and real-time data are combined to realize parameter identification. For high relative order safety constraints (such as obstacle distance constraints and joint limiting constraints) in a task space, an obstacle function family is constructed. A dynamic error buffer function is introduced, and a high-order adaptive control barrier function condition is designed. The high-order self-adaptive control obstacle function constraint is embedded into a real-time quadratic programming solving problem, input obtained through optimization solving can keep the track precision, meanwhile, a joint instruction is automatically corrected to prevent constraint failure, and minimum intervention type safety control is achieved.

This utility model belongs to the field of milling technology for high-temperature alloys, specifically a simple milling device for rough machining of high-temperature alloy steel. It includes a base, a milling cutter assembly on the top of the base, and a track connecting the milling cutter assembly to the base. The milling cutter assembly can move back and forth along the track. A support is located in front of the base, and a platform is mounted on the support. A frame is located on the side of the platform, and a clamping assembly is mounted on the frame. The clamping assembly includes an indexing chuck, which can move left and right along the frame. This utility model, through the arrangement of multiple tracks, allows for adjustment of the workpiece position, avoiding the Y-axis design of traditional machine tools, reducing the cost and size of the equipment. Simultaneously, its simple operation reduces the labor costs for advanced operators.

This invention belongs to the field of vibration and noise reduction technology for new energy vehicles, specifically involving a low-noise design and evaluation method for electric drive systems based on acoustic metamaterials. The method involves determining the peak intensity and frequency of the vibration and noise response of the electric drive system, identifying the significant area of ​​working deformation of thin-walled components in the electric drive system, and determining the installation position of the acoustic metamaterial based on this area. It also involves determining the design boundary parameters of the acoustic metamaterial, designing a local resonant element, artificially constructing the local resonant element, prototyping the acoustic metamaterial based on the artificial construction scheme of the local resonant element in step five, installing the acoustic metamaterial in the determined installation area, and verifying its noise reduction performance. Finally, it determines whether the artificial construction scheme parameters are optimal; if optimal, the acoustic metamaterial scheme is determined. This invention systematically proposes a method for using acoustic metamaterials to mitigate single-frequency noise radiated by the thin-walled structure of the electric drive system, and clarifies the precise selection method for the installation position of the acoustic metamaterial on the thin-walled structure of the electric drive system.

The utility model provides a kind of wafer temperature uniform control and automatic transfer integrated device in hot plate air extraction process, including disc-shaped cavity main body and automatic wafer transfer assembly, cavity main body top is plane structure, hot plate upper surface is perpendicular to the central axis of cavity main body, the sealing disc is coaxially arranged with cavity main body;It further includes air inlet and air outlet, air inlet is circularly opened in the sidewall top of the cavity main body;Air outlet is opened in the top surface center of the cavity main body.The utility model determines suitable cavity wall surface material by optimizing cavity structure, reasonably selecting air inlet and air outlet position, solves the problem of wafer temperature uneven in prior art, and realizes wafer automatic taking through intelligent automatic wafer transfer assembly structure under the form of not changing cavity structure, improves the quality and efficiency of semiconductor wafer manufacturing.

The utility model discloses an RTO (Regenerative Thermal Oxidation) type combustion device based on efficient removal of VOCs (Volatile Organic Compounds) and NOx, which belongs to the field of environmental protection and comprises an amino reducing agent nozzle, a fuel gas nozzle and an RTO type reaction device body, and the RTO type reaction device body is sequentially divided into a purging chamber, a flow guide chamber, a heat exchange chamber and a combustion chamber from bottom to top; the amino reducing agent nozzle and the fuel gas nozzle are sequentially installed on the side wall or the top of the same side of the combustion chamber from top to bottom. And the heat exchange chamber is filled with a heat accumulator. According to the utility model, VOCs thermal oxidation and NOx reduction reaction are integrated in the same RTO device, and synchronous treatment of two pollutants is realized by spraying ammonia in a combustion area, so that the problems of complex system design and high energy consumption of the traditional tandem process are avoided, and meanwhile, the equipment investment and the occupied area of the equipment are reduced.

The present application relates to the field of marine equipment, and aims to provide a full-ocean-depth macrobenthos living sampling and temperature-keeping pressure-transferring device.The device comprises a capture main body structure, an active temperature-keeping structure, a pressure compensator and an electronic cabin; the temperature-keeping box of the active temperature-keeping system is sealingly sleeved outside the main sampling cylinder, and the cavity between the two is filled with heat exchange fluid medium; the thermoelectric refrigeration module is located on one side of the temperature-keeping box, and the upper and lower surfaces thereof are respectively provided with radiating fins; the inner cavity of the radiating fins is filled with heat exchange fluid medium, and is communicated with the skin capsule through a pipeline.The temperature-keeping material-water layer-sample cabin structure form of the active temperature-keeping system not only forms a water jacket type double-layer passive temperature-keeping structure, and the heat releasing bottom surfaces of the cold and hot ends of the refrigeration element of the thermoelectric refrigeration module and the sealing ring on the temperature-keeping cylinder form a seal.The space between the cold and hot end heat releasing units is filled with insulating oil, and is connected to the pressure compensator through a hose to realize internal and external pressure balance, and the design of the pressure-resistant structure is avoided.

The application discloses a method and device used in a node for wireless communication. A first node receives first signaling and transmits a first signal. The first signaling indicates scheduling information of the first signal; the first signal includes a first sub-signal and a second sub-signal; a first field and a second field in the first signaling are respectively used to determine antenna ports for transmitting the first sub-signal and the second sub-signal, or are respectively used to determine precoders of the first sub-signal and the second sub-signal; a load of bits included in the second field in the first signaling is related to K1 candidate integers, and a relationship between the load of bits included in the second field in the first signaling and the K1 candidate integers is related to whether time domain resources occupied by the first sub-signal and time domain resources occupied by the second sub-signal overlap. The above method meets different requirements for the number of bits of the first field and the second field under different multiplexing modes.

The utility model discloses a prefabricated substation. The prefabricated substation comprises a packaging body, a switch cabinet and an arc discharge channel. The packaging body comprises a base, and the top side of the base is provided with an arc discharge area. The switch cabinet is arranged on the base, the switch cabinet is provided with a pressure relief opening, and the pressure relief opening is used for arcing pressure relief of the switch cabinet; a channel inlet of the arc discharge channel is communicated with the pressure discharge opening, and a channel outlet of the arc discharge channel is communicated with the arc discharge area. In the prefabricated substation, an arc discharge channel is used for guiding the trend of electric arcs and pressure, so that the electric arcs and the pressure are guided to an arc discharge area through the arc discharge channel when the switch cabinet carries out arcing pressure relief. The arc discharge area is arranged in the open area of the top side of the base, and the arc and the pressure are safely guided to the arc discharge area through the arc discharge channel, so that arc discharge towards the top side of the base is realized, design of an arc discharge space on the foundation due to downward arc discharge is avoided, the arc discharge cost is reduced, and the space at the bottom of the prefabricated substation is also saved.

The application discloses a railway flat car body and a longitudinal beam of the railway flat car. The longitudinal beam comprises an upper beam body and a lower beam body. The lower beam body is arranged below the upper beam body and is installed on the middle region of the upper beam body in the longitudinal direction through a connecting piece. The lower beam body comprises two end beam modules and a middle beam module. The two end beam modules are installed on the longitudinal two sides of the middle beam module through connecting pieces. The middle beam module is an equal-height beam body. At least a part of the end beam module in the longitudinal direction is a variable-height beam body. In the longitudinal direction, the height of the variable-height beam body gradually increases in the direction close to the middle beam module. The longitudinal beam has less welding, higher green production level and is beneficial to the reasonable distribution of the strength of different regions of the longitudinal beam, thereby reducing the weight.

The utility model provides an auxiliary butt joint device of multiple connectors, comprising a butt joint assembly, a second surface of which is provided with a plurality of first connectors; the first surface of the base assembly is provided with a second connector matched with the first connector; the auxiliary butt joint assembly comprises two sets of transmission matching structures and horizontal driving mechanisms which are symmetrically arranged, the transmission matching structures are arranged on the second surface of the butt joint assembly and located on the two sides of the first connector, and the horizontal driving mechanisms are arranged on the first surface of the base assembly, located on the two sides of the second connector and correspond to the transmission matching structures; the horizontal driving mechanism acts on the transmission matching structure through horizontal movement, converts horizontal driving force into acting force in the vertical direction, and drives the butt joint assembly to vertically move relative to the base assembly, so that butt joint or separation of the first connector and the second connector is achieved. By ingeniously applying a mechanical transmission principle, a larger acting force of the connector is converted into a smaller push-pull force which is convenient for manual operation.

This invention discloses a dual-frequency splicable passive reflector array and its design method, mainly addressing the problems of large size of passive transponders and difficulty in achieving simultaneous aperture beam adjustment in existing blind zone coverage technologies. The designed dual-frequency splicable passive reflector array consists of an array of multiple reflector array elements, including two types of subarrays: "0" and "1". Based on the principle of average phase gradient, M... s A subarray of "0"s and N s The "1" subarrays are arranged in an orderly manner to form the smallest periodic row vector V in the reflection array. min By changing V min M s and N s The number of subarrays and their arrangement order determine beam reconfigurability, using the minimum periodic row vector V. min By extending the array in both the elevation and azimuth planes, different apertures of the splicable reflective arrays can be obtained, achieving aperture reconfigurability and enabling its use in millimeter-wave blind spot filling in wireless communication.

This utility model relates to the field of mechanical manufacturing technology, specifically disclosing an adjustable impact force nail driver. It includes a housing, a first cylinder, a cover, a working piston, and a piston rod connected to the working piston. The housing, the first cylinder, and the cover form a first air chamber above the working piston to store high-pressure gas. It also includes an air replenishment device disposed on the cover, which maintains the air pressure in the first air chamber at the working pressure through the movement of the working piston. The key feature is that the cover also has a pressure regulating device, which includes a valve body, a valve rod, a pressure regulating core, and a pressure regulating spring. The valve body is connected to the cover and has an opening / closing port. The valve rod is axially movable and mounted in the valve body, cooperating with the opening / closing port. This solves the problems of gas leakage leading to reduced air pressure and the inability to adjust the impact force in existing technologies, improving operational efficiency and ease of use.

The utility model relates to the technical field of detection jigs, in particular to a circular hole light leakage detection jig which comprises a base, a test carrier plate and a supporting piece arranged on the base, a mounting column is arranged on the lower end face of the bottom of the test carrier plate, a mounting ball head is arranged at the lower end of the mounting column, and a mounting containing groove is formed in the upper end of the supporting piece. The installation ball head is detachably installed in the installation containing groove, and a locking piece used for fixing the installation ball head is installed on the periphery of the supporting piece. An upper detection plate is further arranged on the test carrier plate, a plurality of product positioning grooves and a plurality of reflection modules are arranged on the upper detection plate, and the reflection modules are located at one ends of the product positioning grooves; the test carrier plate is also provided with a plurality of needle dies. According to the utility model, the mobile phone display screen does not need to be overturned, and whether the front and back surfaces of the round hole of the mobile phone display screen leak light or not can be checked at one time, so that the detection efficiency and the productivity are improved, and meanwhile, the abrasion caused by repeated overturning of the mobile phone display screen is also avoided; the use flexibility is high.

This invention discloses an experimental apparatus and method for simulating reverse fault dislocations in a hypergravity centrifuge. The apparatus comprises a hypergravity loading system, a reverse fault dislocation chamber, and a fault dislocation loading system. The hypergravity loading system consists of a centrifuge body, a suspended platform, and counterweights. The reverse fault dislocation chamber includes an external rigid chamber with an observation window, a rigid base, and an internal movable chamber. The fault dislocation loading system includes a loading servo cylinder, a vertical connecting device, and a sliding drive device. This invention applies vertical loads controlled by the loading servo cylinder, and through the coordinated design of the vertical connecting device and the sliding drive device, drives the internal movable chamber along a fault dip angle of 50°–70° to achieve precise dislocation, thus completely reproducing the entire movement process of the reverse fault during an earthquake.

The utility model relates to an embedded type corrugated paper wine packaging box which comprises an outer box body, an inner box body and a middle box body, the inner box body is arranged in the middle box body, the middle box body is arranged in the outer box body, transparent side plates are arranged on the front face and the back face of the outer box body, the front face and the back face of the middle box body are transparent, and the front face and the back face of the middle box body are transparent. A damping concave table is arranged on the inner wall of the top face of the middle box body, a top face center hole is formed in the top face of the middle box body, and the damping concave table, the top face center hole and the inner box body are jointly used for limiting and fixing a bottle body. The packaging bottle is novel in structure, the outer paper box body, the middle paper box body and the inner paper box body are designed, wood shavings are avoided in the overall design, wood is saved, and the designed damping concave table can play a role in buffering and protecting the top of the bottle body.

The invention relates to the technical field of intelligent building information processing, in particular to an AI-based BIM parameter assignment method, system and device, a medium and a program product. The method comprises the following steps: S1, acquiring a manufacturer equipment parameter document and a data storage specification; s2, extracting equipment parameters by using an AI tool, and establishing an equipment parameter database; s3, calling the equipment parameters from the database by the BIM software; s4, the called equipment parameters are detected, wherein the AI model is used for conducting rationality verification on the called equipment parameters; and S5, assigning the component parameters of the BIM model by using the equipment parameters detected in the step S4. According to the method, the BIM technology, the AI model and the standardized equipment parameter database are combined, equipment parameter data are shared in a unified mode, the AI tool is used for processing the equipment parameter document, the processing efficiency is improved, the AI model is used for conducting rationality verification on the equipment parameters, design based on error data is avoided, and the equipment parameter data sharing efficiency is improved. Therefore, the design efficiency and accuracy are improved.

The utility model relates to a technical field of fountain, especially a kind of fountain device. Fountain device includes box, water outlet mechanism, shaft sleeve, transmission mechanism and rotary drive mechanism, water outlet mechanism includes water outlet cylinder, pull rod shaft and fender, pull rod shaft is installed on box telescopically, fender is installed on the one end of pull rod shaft far from box, for controlling the water type of water outlet cylinder;Shaft sleeve is housed in water outlet cylinder and is connected with box, shaft sleeve is sleeved on pull rod shaft and is slidably connected with pull rod shaft, for guiding the telescopic motion of pull rod shaft relative to box;Transmission mechanism is housed in box and is drivingly connected with pull rod shaft, for driving pull rod shaft to make telescopic motion relative to box;Rotary drive mechanism is drivingly connected with transmission mechanism, for providing power source to transmission mechanism. The fountain device of the application can reduce the size in the height direction of box, thereby realizing the miniaturization of the overall size of the fountain device.

The application relates to the technical field of aircraft aerodynamic design and optimization, and discloses an aircraft low-resistance high-efficiency aerodynamic optimization method based on elite knowledge migration, which comprises the following steps: determining design variables of an aircraft aerodynamic shape and setting geometric constraint conditions; constructing a search space of the design variables; generating an independent population for each subtask by using the search space; performing aerodynamic simulation on each individual in each population, calculating the fitness value of the individual by using a comprehensive objective function constructed by the application, so as to determine an elite individual; executing a cross-task elite knowledge migration mechanism in the evolution process of the individual of the population; independently searching each population by adopting a multi-task parallel collaborative optimization mode, and determining the updating mode of the population according to whether the migration operation is triggered; and finally determining the global optimal individual of each population as an aerodynamic design scheme of the corresponding subtask of the population.