287results about How to "Reduce design" patented technology

The invention discloses an application model generation method and device based on a low-code platform and a medium, and relates to the technical field of low-code application models. The method comprises the steps that user service data are collected, the service data are stored through forms, and the forms comprise a main form and sub-forms; the relation between the main form and the sub-form is identified, model elements are obtained, and the model elements comprise business entities, sub-entities, entity relations, value objects and aggregation roots; an external dictionary is introduced, model elements are expressed through JSON, and a visual script model is generated; packaging the script model to obtain a deployment package, and dynamically publishing the deployment package to a database; and when the database exports the deployment package, storing the deployment package as a JSON file, and compressing and encrypting the JSON file. According to the method, after the form is abstracted into the model, higher-degree reuse can be achieved, the workload of repeated model design and application and form development is reduced, and the development process is faster.

The invention relates to the technical field of mechanical transmission, and provides a connecting rod transmission mechanism and a mirror image engine. The connecting rod transmission mechanism comprises a power sliding block, a power connecting rod and two power pistons, the power connecting rod comprises a connecting rod base body and two linear rod parts, the linear rod parts extend in the first direction, the front end of each linear rod part is connected with one power piston, and the rear end of each linear rod part is fixedly connected with the connecting rod base body; the two linear rod parts are located on the two opposite sides of the connecting rod base body in the first direction, and the power sliding block is installed on the connecting rod base body in a sliding mode in the second direction. The linear rod part does not need to contain a bearing, rotation motion does not exist, the overall cross section is uniform or roughly uniform, standard sinusoidal motion / cosine motion is met, the size reduction design of the linear rod part and the air cylinder is facilitated, the compression ratio in the air cylinder is increased, the combustion efficiency is improved, the overall structure of the engine is more compact, and the needed engine cabin space is reduced. And the power-to-weight ratio and the acceleration performance of the vehicle can be improved.

The invention discloses an integrated optical diversity receiving device, solves the problem of high power consumption when the influence caused by phase distortion and light beam pointing error is corrected in the existing free space optical communication, and belongs to the field of optical communication. The method comprises the steps that free space light focused by a lens is received by a multimode / few-mode optical fiber; the multi-mode light beams received by the multimode / few-mode optical fiber enter the photon lantern; the photon lantern is coupled to the single-mode fiber array after mode demultiplexing; each light beam in the single-mode fiber array enters a polarization beam splitting rotary combiner through an edge coupler; the polarization beam splitting rotation combiner performs transverse electric wave (TE) and transverse magnetic wave (TM) mode separation on the entered light beam, then rotates the separated TM polarization state light to a TE polarization state, combines the rotated TE polarization state light and the separated TE polarization state light, and then enters the MZI network; the MZI network is used for realizing optical coherent beam combination; a control circuit controls the merging of the light beams in the MZI network.

The invention relates to a large-spacing obstacle crossing photovoltaic cleaning device and an obstacle crossing method.The device comprises a rack, a power source assembly, a cleaning assembly, a control assembly, a walking assembly, an obstacle crossing assembly and a positioning sensing assembly, and the walking assembly comprises a first driving wheel assembly and a second driving wheel assembly; the positioning sensing assembly comprises a first positioning sensing part and a second positioning sensing part, the positioning sensing assembly is in communication connection with the control assembly and transmits a positioning signal to the control assembly, the obstacle crossing assembly comprises a first obstacle crossing part and a second obstacle crossing part, and the first obstacle crossing part and the second obstacle crossing part each comprise a supporting seat, a driving execution part, a swing part and an obstacle crossing walking part. The supporting seat is fixedly connected with the rack, one end of the swing part is hinged to the supporting seat, the obstacle crossing walking part is arranged at the other end of the swing part, and the driving execution part is in transmission connection with the swing part and used for driving the swing part to swing in the vertical plane. Large-interval crossing can be achieved on the plane of the photovoltaic module, the design and labor cost can be saved, and the cleaning efficiency is improved.

The invention discloses a fast universal passivity macro-modeling method based on Hamiltonian matrix pure virtual feature values. The method comprises the steps that n-port passive network parameters obtained through simulation or measurement serve as an original data set; rational fitting is carried out on the passive data set, and a macro model is established; calculating a pure virtual characteristic value of a Hamiltonian matrix M of the macro model, and judging the passivity of the macro model; carrying out passivity repair on the initial model according to a passivity judgment result; and inputting the passive macro model into a circuit simulator for simulation. According to the method, only the pure virtual feature value of the Hamiltonian matrix is calculated to achieve rapid passivity detection of the macro model, the method is suitable for macro modeling of symmetric and asymmetric models, the method has the characteristic of universality, and when the method is applied to integrated circuit design, the convergence of circuit simulation can be improved, the macro modeling time is shortened, the circuit simulation is accelerated, and the circuit simulation efficiency is improved. And the design and market period of electronic products is shortened.

The utility model discloses a carrying module which comprises a carrying table and an X-axis electric sliding rail, the X-axis electric sliding rail is transversely erected at the top end of the carrying table, an X-axis sliding seat is assembled at the top end of the X-axis electric sliding rail, and a carrying plate is fixedly connected to the top end of the X-axis sliding seat. According to the carrying module, the vacuum and vacuum breaking electromagnetic valve system is arranged and covers the processes of vacuum generation, negative pressure monitoring, vacuum breaking (positive pressure gas is supplied to a suction cup cavity while a vacuum generator is closed) and the like, when the vacuum and vacuum breaking electromagnetic valve system is started, a vacuum suction cup is tightly adsorbed to the surface of a screen, and the screen is sucked in a suspended mode; the screen can be stably carried, damage caused by clamping is avoided, clamp design and assembly are reduced, the size and the position of the vacuum suction cup can be adjusted, suction force of the vacuum generator can be set, safety, stability and flexibility of the screen in the carrying process are guaranteed, and the problem that the screen needs to be carried with a clamp for carrying is solved.

The invention relates to the technical field of 3D printing, and particularly discloses a supporting method and device for 3D printing sintering, and the supporting method comprises the steps that (1) high-temperature-resistant material powder is laid at the bottom in a high-temperature-resistant box body; and (2) the bottom of a workblank obtained through 3D printing is embedded into the high-temperature-resistant material powder, so that the workblank is supported by the high-temperature-resistant material powder, and gaps generated by shrinkage deformation of the workblank are filled with the high-temperature-resistant material powder during sintering. According to the supporting method and the supporting device for 3D printing sintering, the supporting effect on the workblank is good, the workblank is not prone to deformation in the sintering process and can be easily taken out of the supporting structure, the cost is reduced, and the 3D printing range is widened.

The invention relates to the technical field of large language model and front-end page UI design, in particular to an interactive front-end page generation method based on a large language model, which comprises the following steps: S1, registering a natural language extraction key information tool; s2, storing vector data, constructing a vector database, and realizing conversion from a natural language to a component type and a placement position; s3, carrying out vector matching to obtain keywords corresponding to the description; s4, returning component information; s5, rendering a front-end page; and S6, generating page persistence. The complexity in the front-end page design process is simplified, the skill requirements of developers are reduced, the page design efficiency is improved, the front-end page design and development period is shortened, the development cost is reduced, the user experience in the front-end page design is improved through a natural language man-machine interaction mode, and the user experience is improved. Personalized customization can be realized, and diversified requirements of users can be met.

The embodiment of the utility model provides a light-transmitting pressure sensor, a light-transmitting pressure sensing module and electronic equipment, the light-transmitting pressure sensor is a light-transmitting welded pressure sensor, and a first hollow light-transmitting area is arranged in the central area of a sensor main body, so that the light-transmitting requirement of a user is met through backlight; the sensor body is used for being electrically connected with the control circuit board through the first bonding pad, the pressure sensor can be designed to be standardized unified packaging, a client designs and arranges the sensor according to the actual needs of the client, the sensor is welded to the corresponding position of the control circuit board, and the position requirement of the key is met; actual design and production processes of the pressure sensor are reduced, and the development period is shortened; the modular design of the pressure sensor is realized, the sensor is standardized, batch production and stocking are facilitated, and the cost is reduced.

The utility model relates to a process system for recovering tobacco shreds from defective waste cigarettes. The process system comprises a first vibrating screen; the second vibrating screen is connected with the first vibrating screen; the cigarettes treated by the first pre-crushing devices are directly conveyed to the first vibrating screen; the first vibrating screen and the second vibrating screen are each provided with a first screen plate, a wave-shaped curved surface is formed on the top of each first screen plate and is in a continuous wave shape in the advancing direction of the cigarettes, and all wave crests and wave troughs are in a continuous S-shaped trend in the horizontal plane. Under the action of a wave-shaped curved surface on the first sieve plate, the top surface area of the first sieve plate is greatly increased, the design of reducing the projection area of the first sieve plate in the vertical direction is facilitated, the design of reducing the sizes of the first vibration sieve and the second vibration sieve is facilitated, the occupied space is reduced, and multiple first pre-crushing devices are adapted; therefore, the single processing line can be used for recovering and processing various different types of defective cigarettes, and the adaptability of the equipment is greatly improved.

The invention relates to an ultra-thin solid aluminum electrolytic capacitor, which comprises a shell and an element cover body, an opening is formed in one side of the shell, and a flanging clamping protrusion is arranged at the opening. The cover body and the opening are embedded into a whole through injection molding to package the element in the shell; the cover body comprises a base plate, an inner plug and a side sealing wall; a side sealing wall and an inner plug are vertically arranged on the upper end face of the base plate. The inner plug is positioned inside the side sealing wall; a gap between the outer peripheral wall of the inner plug and the inner peripheral wall of the side sealing wall forms a groove part; the groove part is tightly combined with the opening inner and outer structures; two lead holes penetrating through the cover body are symmetrically formed in the end face of the inner plug. The cover body and the opening structure of the shell are integrally packaged through injection molding and embedding, and the cover body can still meet the heat resistance and shock resistance conditions under the condition that the thickness is reduced, so that the solid aluminum electrolytic capacitor applying the cover body can still have relatively high heat resistance and shock resistance while breaking through the product thinness limit; and the ultra-thin effect of the solid aluminum electrolytic capacitor is realized.

The present invention is a contact / non-contact force-magnetic dual-mode sensing sensor based on a magnetostrictive film. The sensor comprises a sensitive layer, a conversion layer, a conversion circuit and an excitation power supply; the sensitive layer is a magnetostrictive film, the conversion layer is a three-layer flexible graphic circuit, the top layer of the three base layers of the FPC is covered with a copper layer, and the two lower base layers are respectively provided with a pickup coil and an excitation coil; the pickup coil is connected to the conversion circuit, and the excitation coil is connected to the excitation power supply; the copper layer is connected to the ground wire; the sensitive layer is deposited on the top copper coating of the conversion layer. The present invention can directly pick up the magnetization state change in the magnetostrictive film without a mechanical response process, and has the excellent performance of high sensitivity, short response time and recovery time, good compatibility, and full-range perception.

The utility model relates to an oil smoke purification all-in-one machine which comprises a cooking bench. The oil fume collecting assembly is mounted on one side of the cooking bench; the cooking fume collecting assembly comprises a shell connected to one side of the cooking bench, a panel mounted on the front surface of the shell, two fans mounted in the shell, an air guide pipe connected with the two fans at the same time, and a back cover used for covering the air guide pipe; the back cover is detachably connected to the bottom end of the shell; the purifying assembly is mounted at the bottom end in the oil fume collecting assembly; the purification assembly comprises a purification box body connected with the air guide pipe, two filter plates detachably mounted in the purification box body, and a plurality of electrode needles uniformly connected to the inner walls of the two opposite sides of the purification box body at intervals; and the electrode needle is positioned between the two filter plates. The cooking fume purification all-in-one machine is simple in structure and convenient to use, the detachable purification assembly is installed in the shell, cooking fume purification can be achieved in the shell, the design of a smoke pipe is omitted, the cooking fume purification all-in-one machine is more suitable for various use scenes, and installation flexibility and economic benefits are improved.

The invention discloses a low-profile dual-circularly-polarized Ka-band phased-array antenna which mainly solves the problems that a traditional circularly-polarized phased-array antenna is high in profile, complex in structure and incapable of polarization multiplexing. The antenna feed structure and the metal patch structure are symmetrical, the left-hand and right-hand circular polarization feed ports are directly connected with the radiation patch to excite the patch to generate left-hand circular polarization and right-hand circular polarization respectively, regulation and control from single circular polarization to dual circular polarization are achieved, the left-hand and right-hand circular polarization feed ports are directly connected with the radiation patch, and the radiation patch is directly connected with the left-hand and right-hand circular polarization feed ports. The patches are excited to generate left-hand circular polarization and right-hand circular polarization respectively, other extra structures are not introduced, the antenna design process is simplified, and polarization multiplexing of the circularly polarized antenna is achieved. The antenna is composed of the two layers of dielectric plates, a complex middle feed network is omitted, and the antenna has the advantages of being simple in structure and low in profile.

The novel energy storage converter structure comprises a shell, a converter body is arranged in the shell, a control module is arranged at the front end of the upper layer of the converter body, a heat dissipation driving assembly is arranged at the rear end of the upper layer of the converter body, and a direct current module is arranged on the side face of the control module; a filtering module is arranged at the front end of the lower layer of the converter body, and a conductive part is arranged between the filtering module and the heat dissipation driving assembly. The converter is simple in structure, the internal structure is modularly designed, the interior of the converter is divided into a plurality of functional modules such as a heat dissipation driving assembly, a control module and a filtering module, the assembling efficiency is improved, and the reliability and maintainability of a system are improved; the cable failure rate and the maintenance cost are reduced due to the design of few cables, the internal structure of the product is neat and orderly, the product image is improved, and the system reliability is improved.

The invention provides a Serverless low-code intelligent architecture generation system based on multi-modal input. The problems that a traditional Serverless architecture is complex in design, a low-code platform is insufficient in flexibility, architecture design and implementation are disjointed and the like are solved. The system comprises a multi-modal input processing module, a Serverless architecture generation module, a low-code visual design module and a Serverless function automatic generation module. Various inputs such as texts, charts and code snippets can be processed at the same time, a Serverless software architecture is intelligently generated, a real-time adjustment interface is provided, and architecture design is automatically mapped to specific function implementation. The innovation point is that multi-modal input understanding, Serverless architecture design and a low-code development platform are integrated, and the whole-process intelligence from demand to deployment is realized. The method has the advantages that the development efficiency is improved, the threshold is reduced, the flexibility and the expandability are enhanced, and powerful support is provided for an enterprise to quickly construct and deploy Serverless applications.

The utility model relates to an electrocardio watch which comprises a bottom shell, a middle frame and a transparent watch cover, the bottom shell and the watch cover are arranged at the bottom end and the top end of the middle frame respectively, a control circuit board is arranged in the middle frame, a first electrode electrically connected with the control circuit board is arranged on the bottom face of the bottom shell, a second electrode is arranged on the upper surface of the watch cover, and the first electrode is electrically connected with the control circuit board. The second electrode comprises an upper electrode part located on the upper surface of the meter cover, a lower electrode part located in the middle frame and a connecting part, the two ends of the connecting part are connected with the upper electrode part and the lower electrode part respectively, and the lower electrode part is electrically connected with the control circuit board. According to the electrocardio watch, a structure used for installing the second electrode does not need to be independently arranged on the middle frame, the occupied space of the second electrode is reduced, the watch can be designed to be thinner, meanwhile, holes or protruding electrodes are prevented from being arranged on the middle frame, and the appearance integrity of the electrocardio watch is maintained.

The present invention relates to the field of optical imaging technology, and specifically discloses an optical imaging lens, a camera module and an electronic device. The optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence from the object side to the image side, wherein the optical imaging lens satisfies the conditional formula: 1<f3456 / f<4, f3456 is the combined focal length of the third lens, the fourth lens, the fifth lens and the sixth lens, and f is the effective focal length of the optical imaging lens. The optical imaging lens of the present invention is conducive to correcting aberrations such as chromatic aberration and field curvature of the optical imaging lens by setting six lenses with refractive power, can slow down the light deflection angle, reduce the design and assembly sensitivity of each lens, and can meet the needs of miniaturization, lightweight and high-definition imaging quality of the optical imaging lens.

According to the high-sensitivity light-transmitting pressure sensor, the light-transmitting pressure sensing module and the electronic equipment provided by the embodiment of the invention, the first light-transmitting area is arranged in the central area of the substrate, so that the light-transmitting requirement of a user is met through backlight; the substrate is welded and fixed to the control circuit board through the first bonding pad to achieve electric connection, the sensor can be designed to be standardized unified packaging, a client designs and arranges the sensor according to the actual requirement of the client, and the position requirement of the key is met; actual design and production processes of the sensor are reduced, and the development period is shortened; the modular design of the sensor is realized, the sensor is standardized, batch production and stocking are facilitated, and the cost is reduced; the strain resistors are arranged in the maximum deformation area, the resistance change value between the strain resistors is increased, the reference resistors are arranged in the minimum deformation area, the resistance change value between the reference resistors is reduced, the strain resistors and the reference resistors form a Wheatstone bridge, the sensitivity of the sensor is better according to the bridge principle, and the product requirement for high sensitivity is met.

The invention provides an improved grinding door which comprises a pipe wall, a bottom plate is fixedly connected to the outer wall of the pipe wall, four first bolts are installed on the upper surface of the bottom plate, the bottom plate and a pressing and fixing plate are connected through the first bolts, and the pressing and fixing plate and a manhole cover are connected through second bolts. The two fixing blocks are fixedly connected to the upper surface of the bottom plate, the pulleys are installed at the bottoms of the two sides of the pressing and fixing plate, and the sliding rails are installed between the pipe wall and the bottom plate, in the disassembly process, only several nuts need to be loosened, the manhole cover can be disassembled, people do not need to enter a mill to hang a mill door, and other work does not need to be considered. The sliding rail is installed outside the pipe wall, the manhole cover can be directly moved to the sliding rail to be placed after being lifted by a crane, time and labor are saved, and due to the fact that the supporting column on the side, close to the manhole cover, of the sliding rail is inclined, and the fixing blocks are installed on the two sides, the manhole cover can be rapidly aligned to be conveniently installed when installed.

The invention discloses a service robot design method and system based on modular simulation, and relates to the technical field of robot design, and the method comprises the steps: determining the total service function and performance index of a service robot according to a work task and a work environment; dividing the total service function into a plurality of independent sub-functions, and constructing a target module of each sub-function; according to the performance indexes, matching an optimal module of each target module from a preset module library to serve as a simulation module; constructing a structural relationship and a data exchange form among the simulation modules according to the environment characteristics, and mapping the environment characteristics into an analog simulation environment; based on an analog simulation environment, performing unit testing and adjustment on each simulation module, and then performing assembly testing and adjustment to obtain a three-dimensional simulation model and an assembly drawing of the service robot; and finally, debugging an installation component, an operation system and a software function component of the entity service robot. The design efficiency of the service robot can be improved.

The present invention discloses an L\S band dual-frequency common aperture filter antenna array and communication equipment, belonging to the field of communication antennas. The antenna array includes: a metal floor; a plurality of array-arranged magnetic resonance near-field parasitic filter antennas, including a dielectric substrate four, an L-shaped radiation metal strip arranged on an end face of the dielectric substrate four, a parasitic semi-circular metal strip and a coaxial device A; and a plurality of microstrip filter antennas, including a dielectric substrate three arranged on the metal floor, a dielectric substrate two arranged parallel to the dielectric substrate three, a parasitic metal patch, a coaxial device B and a Y-shaped radiation metal strip. The antenna array of the present invention can effectively reduce the hetero-frequency coupling between L\S band antennas by utilizing the filtering characteristics, and the L\S band antennas are compactly arranged by combining vertical and horizontal placement, and antenna units of different operating frequencies will not generate shielding and coupling, while realizing the compact and miniaturized layout of the common aperture array.

The turbocharger comprises a turbine shaft (1), a turbine (2) is arranged at the output end of the turbine shaft (1), a middle body (3) is arranged on the side, close to the turbine shaft (1), of the turbine (2), the turbine shaft (1) is rotationally connected to the axis of the middle body (3), an air cooling air channel (3.1) is arranged at the end, close to the turbine (2), of the middle body (3), and the air cooling air channel (3.1) is communicated with the air cooling air channel (3.1). The air cooling air channel (3.1) is in a U shape and is arranged in the circumferential direction of the turbine shaft (1). The utility model provides a turbocharger with an air cooling intermediate, which is used for cooling the turbocharger in an air cooling manner so as to reduce the production cost of the turbocharger.

The utility model discloses an automobile spare part welding bearing platform which comprises a supporting frame and automobile spare parts, four parallel cross rods are arranged on the top of the supporting frame, detachable positioning tool plates are arranged on the cross rods, the automobile spare parts are arranged on the positioning tool plates, and the positioning tool plates are arranged on the supporting frame. Guide plates are uniformly arranged on the surface of the positioning tool plate around the contour edge of the automobile part, a positioning pin is arranged at the position, corresponding to the center of the automobile part, of the surface of the positioning tool plate, and a plurality of ball head supporting pieces are arranged at the position, located below the automobile part, of the surface of the positioning tool plate; the center point of the automobile part is positioned through the positioning pin, the position of the automobile part is prevented from deviating, the positioning precision of the automobile part is improved, the irregular cambered surface of the automobile part is supported through the ball head supporting piece, accurate, reliable and complete supporting can be provided for the automobile part, the overall structure is simple, and replacement is convenient; and the design and manufacturing cost is low.

The present invention relates to a multifunctional note clip, comprising a clip for fixing and clamping on the outside of an infusion stand, characterized in that: a first bendable shaping tube is fixedly installed on one side of the clip, a magnetic writing board is fixedly installed on the side of the first bendable shaping tube away from the clip, a writing pen is clamped on the side of the magnetic writing board, and a rotatable storage box is installed on the side of the magnetic writing board away from the clip. The present invention has an ingenious structure and a reasonable design. It can be clamped on the infusion stand by a clip. The rotatable magnetic writing board not only saves space, but also the writing content can be adjusted at any time according to the patient's treatment situation. The writing is easy and convenient to erase, and it can be used repeatedly without generating consumables. The rotatable storage box can temporarily store the small caps generated during the installation of the dialysis pipeline, and the pipeline installation is rotated and dumped after the installation is completed, which is convenient for unified collection and processing. The rotatable storage box can also be placed in advance for the test tubes that the patient needs to take blood samples before dialysis on the same day, which serves as a reminder for nurses.

This utility model discloses a compact and easy-to-assemble fan light, including a hanging assembly, a drive motor, a mounting plate, several fan blades, a light source, and an outer cover fitted over the drive motor. The drive motor and the light source are both connected to the hanging assembly. The mounting plate is connected to the output end of the drive motor and rotates with it. A mounting base is provided at the end of each fan blade. A connecting structure is provided between the mounting base and the mounting plate to connect the two. The outer cover has a recessed portion, and an inwardly recessed clearance groove on the outer side of the recessed portion to expose the connecting structure. The light source is located below the mounting plate. The clearance groove on the outer cover directly exposes the connecting structure between the fan blade mounting base and the mounting plate, allowing operators to operate directly through the clearance groove. Hands and tools can easily reach in without disassembling the outer cover. This reduces the installation difficulty for consumers, significantly improves installation efficiency, and enhances the user experience.

The invention provides a display interface module and an LED display system. The LED display system comprises an LED display module, a sending box, an interface card and a display interface module. An interface unit in the display interface module can synchronously receive a power signal and an LVDS signal, and an output unit can synchronously transmit the power signal and a TTL signal, so that compatibility of signal transmission and power transmission is realized, the number of wires and operation steps for field installation are effectively reduced, and human resource investment and installation time consumption are reduced; meanwhile, the signal conversion unit can convert the LVDS signal into a TTL signal, so that the requirement of the LED display module on the TTL signal is effectively met, and the smoothness of signal transmission is ensured; besides, the display interface module comprises a storage unit, the storage unit can be used for storing correction data of the LED display module, an independent correction storage circuit does not need to be additionally arranged on the LED display module, redundant components and circuit design are omitted, hardware cost is reduced, and optimization of a product structure is facilitated.

The present invention provides a method and device for dividing the carcass mesh of the bead area for tire finite element analysis, firstly identifying the bead area on the left and right sides of the tire material distribution diagram, then adding auxiliary dividing lines at the bead area to divide the lower part of the bead area into a carcass turn-up outer section and a carcass turn-up inner section, adding vertical dashed lines at the bead area to divide the carcass turn-up outer section and the carcass turn-up inner section of the bead area equally, and finally stretching and transforming the vertical dashed lines of the carcass turn-up outer section and the carcass turn-up inner section of the bead area. The scheme of the present invention can reduce or eliminate the situation that the carcass mesh of the bead area is excessively distorted in the current tire finite element simulation analysis, resulting in the simulation result not converging and the inability to obtain the result, thereby improving the efficiency of tire finite element simulation analysis, saving simulation calculation resources, and shortening the tire product development cycle.

This invention provides an angle-of-attack control device and a passive angle-of-attack airfoil sailboat, belonging to the field of passive angle-of-attack control for rigid sails. The angle-of-attack control device includes an airfoil sail and a rotating mechanism. The airfoil sail includes an airfoil sail surface, a mast, and a base matching the mast. The mast is perpendicular to the base and rotatably connected to the base. The mast is fixedly connected to the bottom of the airfoil sail surface. The rotating mechanism is located at the top of the airfoil sail surface. The rotating mechanism includes a motor and a rotating drum. The motor includes a rotation drive component, a speed-changing component, and an output shaft. The motor is located at the top of the airfoil sail surface, and the output shaft is parallel to the mast and fixedly connected to the rotating drum. This passive angle-of-attack airfoil sailboat includes a double hull and multiple angle-of-attack control devices, which are arranged in an array on the double hull. Using the angle-of-attack control device and passive angle-of-attack airfoil sailboat provided by this invention can solve the problems of excessively large airfoil sail structures, insufficient mainsail area, and insufficient propulsion in existing technologies.