1906 results about "Shape-memory alloy" patented technology

The invention discloses a dynamic compensation intelligent formwork real-time regulation and control method and system, and relates to the technical field of building intelligent control. According to the method, pulse signal sensing and cooperative compensation between nodes are realized by constructing a distributed neural unit network, and a three-level compensation mechanism is triggered when displacement or stress is detected to exceed a threshold value. A generative adversarial network is innovatively adopted to construct a virtual scene library to simulate extreme working conditions, a cross-scene migratable strategy library is generated through feature alignment, and intelligent strategy matching of a new construction site environment is realized. A full-structure rigidity field is dynamically generated based on an elastic mechanical model, a supporting arm rigidity switching path is optimized in combination with an ant colony algorithm, and directional dissipation of wind vibration energy is achieved through triangular rigid network construction. The system adopts a biological heuristic self-organizing algorithm to realize redundant network reconstruction when nodes fail, a supporting arm adopts a shape memory alloy and carbon fiber composite structure, and a micro strain sensor is integrated to realize directional release of corrosion stress. According to the method, the adaptive capacity of the formwork system under the complex working condition is effectively improved, and the structural failure rate is reduced through multi-modal compensation strategy fusion.

The invention provides a house waterproof maintenance system based on an intelligent detection and self-repairing technology, and the system comprises an intelligent sensing layer which is used for collecting multi-dimensional physical parameters of building waterproof key nodes in real time; the edge calculation analysis layer is used for performing fusion analysis and risk prediction on the perception data; the dynamic self-repairing execution layer is used for triggering a multi-stage repairing mechanism according to an analysis result; the cloud management layer is used for realizing visual management and control and strategy optimization of the whole system, and relates to the technical field of building waterproofing, the building state is monitored in real time through a multi-mode sensing network, water leakage risk prediction is realized in combination with an edge calculation algorithm, and collaborative repair of a microcapsule repair agent, a shape memory alloy grid and an electrodialysis module is triggered; the system remarkably improves the timeliness and reliability of waterproof maintenance, reduces the manual intervention cost, and is suitable for intelligent maintenance of residential buildings, industrial buildings and historical protection buildings.

The invention belongs to the technical field of solid-liquid phase change heat dissipation, and discloses a memory alloy-based phase change expansion buffer structure, which comprises an elastic structure, a supporting structure, a thin wall, a cavity, a flaring, an electronic device, a heat sink, fins, a connecting structure and a phase change material, the thin wall is made of shape memory alloy and separates the internal cavity and the external phase-change material, the internal cavity is communicated with the external environment through the flaring, and in the flying process of the aerospace vehicle, external airflow flows into the flaring to take away heat stored by the phase-change material continuously. Based on the shape memory function of the memory alloy, additional space expansion buffering can be provided for the phase change material when the temperature changes, and stress damage caused by phase change expansion is avoided. The memory alloy thin wall and the elastic supporting structure are combined, the structure is simple, no moving part exists, circulating work in the high-temperature environment and the low-temperature environment can be achieved, local hot spots caused by internal gap movement of the phase change material in the circulating phase change process are reduced, and heat transfer deterioration is avoided.

The invention provides a bending-adjustable microcatheter with multi-section bending control, and belongs to the technical field of bending-adjustable microcatheters.The bending-adjustable microcatheter with the multi-section bending control comprises a catheter body, a driving assembly and a control assembly, and the catheter body is composed of seven flexible pipe sections which are connected with one another; the driving assembly comprises seven independent shape memory alloy drivers, and each shape memory alloy driver is connected with the outer side of the corresponding flexible pipe section. The control assembly comprises a power supply, a microprocessor and a temperature sensor, the power supply supplies power to the shape memory alloy drivers, the microprocessor controls the current of each shape memory alloy driver, and the temperature sensor monitors the temperature of each flexible pipe section in real time; the problems that the bendability of a traditional catheter is usually limited, the catheter can only be operated within a fixed angle range, the bending form of the catheter is fixed, and various surgical operation requirements cannot be perfectly met can be solved.

The invention belongs to the technical field of precision machining equipment, and discloses a partitioned and deformation-controllable precision polishing grinding head which comprises a partitioned base, a positioning block is arranged in the center of the lower portion of the partitioned base, at least one connecting rod assembly is arranged above the partitioned base, and the top end of each connecting rod assembly is connected with a curvature adjusting head. A flexible polishing head is arranged above the curvature adjusting head, a protective shell is arranged on the outer side of the connecting rod assembly, the flexible polishing head and the protective shell are connected through a grinding head frame, and the whole device is provided with a drive circuit. According to the precise polishing grinding head capable of being partitioned and deformed controllably, through the partitioned base and the independent shape memory alloy driver, the curvature radiuses of the center and the edge of the flexible polishing head are controlled, the edge pressure is optimized, stable contact rigidity and uniform pressure distribution are brought, and finer surface shape control is achieved; the shape memory alloy driver is a solid-state element and is matched with the transverse amplification connecting rod, and needed driving force and displacement can be achieved in a relatively compact space.

The invention relates to the technical field of cables, and discloses an anti-torsional fatigue and corrosion-resistant wind power cable and a manufacturing process thereof, the anti-torsional fatigue and corrosion-resistant wind power cable comprises a three-phase cable core main body, a dynamic compensation anti-torsion layer, a multifunctional corrosion-resistant barrier layer and an outer sheath, the three-phase cable core main body comprises a stranded conductor, a filling inner layer and an insulating layer; the dynamic compensation anti-torsion layer comprises an incongruous spiral supporting layer and a shape memory alloy compensation layer, and the incongruous spiral supporting layer comprises aramid fiber bundles and a nickel-cobalt alloy wire woven mesh; the multifunctional anti-corrosion barrier layer is arranged on the outer side of the dynamic compensation anti-torsion layer and sequentially comprises an anti-corrosion barrier bottom layer, an anti-corrosion barrier middle layer and an anti-corrosion barrier bottom layer surface layer from inside to outside. Through the gradient composite structure design, the problem of failure of a traditional wind power cable under long-term dynamic load and severe environment is effectively solved, and the torsional fatigue resistance, the corrosion resistance and the environmental adaptability are remarkably improved.

The invention discloses an embedded fiber grating sensor self-calibration strain monitoring system and method.The system comprises a fiber grating sensor, an optical fiber demodulator and a stress buffering type self-calibration mechanism, and the fiber grating sensor is embedded into a propeller blade prefabricated mounting groove through a metal embedded part and a gradient modulus adhesive layer; the plurality of fiber grating sensors are symmetrically distributed in a propeller blade prefabricated mounting groove in pairs, and infrared rays of each pair of symmetrical fiber grating sensors are converged at the circle center of a propeller hub to form a dynamic reference point; the optical fiber demodulator is integrated on the propeller hub and is connected with the plurality of optical fiber grating sensors; the stress buffering type self-calibration mechanism integrates a double-shaft flexible hinge and a shape memory alloy, and interface stress buffering and fiber grating sensor position collaborative self-calibration are achieved. The interface stress is effectively reduced through the gradient modulus glue layer, and the shape memory alloy drives the double-shaft flexible hinge to efficiently correct the offset of the fiber grating sensor in real time and buffer the vibration.

The invention relates to a safe stoping process based on a weak rock mass condition, which comprises the following steps: S1, through three-dimensional geological modeling and crustal stress field measurement, dividing geological units and determining differentiated stope structure parameters; s2, layered stoping, wherein the stope advancing speed is dynamically adjusted according to the ground stress real-time monitoring data; s3, layered filling operation is implemented, a shape memory alloy wire mesh is preset in a filling body, and a grouting channel is reserved in the contact face of the filling body and the surrounding rock; according to the method, through a dynamic correlation model of crustal stress real-time monitoring and propelling speed, the crustal stress change rate is directly converted into a mining parameter adjustment instruction, and dynamic balance of mining strength and crustal stress release is achieved; multi-dimensional data such as ground stress, micro-seismic energy and displacement are collected in real time, data are fused through an algorithm, rock mass mechanical parameters are inverted, a numerical model is optimized, and regulation and control schemes such as stope advancing speed, supporting parameters and filling ratio are automatically generated based on a model prediction result.

The invention relates to an unmanned aerial vehicle system based on a flexible mechanical arm. The unmanned aerial vehicle system comprises the flexible mechanical arm and an unmanned aerial vehicle. The flexible mechanical arm comprises a plurality of body section modules and clamping jaw modules, and the adjacent body section modules are connected in series through supporting pipe columns. The body section module comprises a paper folding structure, a pneumatic module and a first shape memory alloy spring; each paper folding structure comprises a plurality of joints, and the multiple first shape memory alloy springs are arranged on the outer side of each paper folding structure; the clamping jaw module is arranged on the body section module at the tail end of the flexible mechanical arm; the unmanned aerial vehicle comprises a flight control system, and the flight control system is used for controlling the flight of the unmanned aerial vehicle and adjusting the working states of the segment module and the clamping jaw module. According to the method, real-time response can be made to key structure parameters such as load, rigidity, position and force control at the same time, the limitation of a traditional single task target is broken through, and the motion state of each joint can be automatically adjusted according to the actual working condition.

The invention provides a building steel structure engineering detection device based on a sensor, and relates to the field of building steel structure engineering detection. The detection device comprises a sectional type bionic mechanical arm which is formed by connecting at least six joint sections capable of being bent independently in series, and a pneumatic driving cavity and a shape memory alloy wire are arranged in each joint section; the self-tightening winding mechanism comprises a pre-tightening belt surrounding the outer wall of the mechanical arm and a pressure feedback unit; the multi-mode detection head is fixed at the tail end of the mechanical arm and is integrated with an eddy current sensor, an ultrasonic phased array probe and a high-resolution industrial camera; and the central control module is in signal connection with the mechanical arm and the multi-mode detection head, dynamically plans a winding path of the mechanical arm according to laser ranging data of the laser ranging module, and selectively starts the eddy current sensor or the industrial camera to perform cooperative detection based on an initial scanning result of the ultrasonic phased array probe. And the effects of self-adaption to complex morphology, synchronous completion of multi-type defect detection and environmental interference resistance are achieved.

The invention discloses a modularized replaceable self-resetting energy consumption type bridge pier anti-collision system, and belongs to the technical field of bridge engineering structure safety. The system includes an annular rubber pad, an annularly disposed damper module, and a shape memory alloy (SMA) tow. The damper module comprises a cylinder body, high-viscosity fluid, a reset spring, a piston and a force transmission plate. The cylinder body is fixed to the pier in a surrounding mode through bolts and rubber pads, the inner wall of the cylinder body is connected with the piston through a reset spring, the piston rod end is hinged to the force transmission plates, and the SMA wire bundles are connected with the force transmission plates. When an external impact load acts on the force transmission plate, the fluid damper provides viscous energy consumption, and the SMA wire bundle, the spring and the rubber pad provide deformation energy consumption; after the collision is finished, the system can be reset to the initial position under the synergistic effect of the SMA wire bundle, the spring and the rubber pad. By means of the modular design, efficient energy consumption and self-resetting can be achieved; and meanwhile, a single damper can be quickly replaced after being damaged, so that the maintenance efficiency and the system recoverability are greatly improved.

The invention relates to the technical field of solar heat utilization, and discloses an electric energy conversion and power regulation and control method based on a solar heat exchange coupling system, which comprises the following steps: calculating the phase change latent heat release rate and pressure and temperature sensitivity of a working medium in real time through a nonlinear prediction model, and establishing a compensation factor to dynamically correct the fusion weight of temperature and pressure signals; the shape memory alloy runner is driven to adjust the branch angle in a self-adaptive mode within the range of 45-75 degrees; constructing an energy potential matching matrix of the temperature gradient of the heat storage module and the output voltage of the power generation system, and combining a pulse type energy release strategy to maintain power stability; and controlling adjacent flow channel branches to generate a phase difference based on pressure fluctuation spectrum characteristics to realize fluctuation offset. According to the method, through closed-loop control of thermodynamic parameter compensation and flow channel dynamic adjustment and space-time collaborative optimization of energy potential matching and pulse release, continuous and stable power generation under the intermittent irradiation condition is achieved, the overall energy efficiency of the system is improved, and operation is more stable.

The invention discloses flutter suppression equipment in continuous machining of long bars, and particularly relates to the technical field of flutter suppression, the flutter suppression equipment comprises a rack, a strip-shaped groove is formed in the inner wall of the top of the rack, a two-way threaded rod is connected to the inner wall of the middle of the strip-shaped groove through a bearing, and moving blocks are connected to the outer walls of the opposite positions of the two sides of the two-way threaded rod; connecting plates are fixedly connected to the outer walls of the tops of the moving blocks, connecting blocks are fixedly connected to the opposite sides of the two connecting plates, clamping plates are connected to the ends, away from the connecting plates, of the connecting blocks, heating resistance wires are embedded in the clamping plates, and the clamping plates are made of shape memory alloy. The surface of the clamping plate is connected with a vibration reduction composite layer. The vibration reduction composite layer plays a role in assisting flutter suppression and meanwhile carries out kinetic energy recovery work, through real-time online damping adjustment, flutter is effectively suppressed, certain electric energy is provided in cooperation with kinetic energy recovery, and the energy-saving effect is achieved.

The invention discloses a kilometer deep well roadway toughness regulation and control supporting system and a dynamic design method, and belongs to the field of deep well roadway supporting. The supporting system comprises a multi-layer collaborative structure and an intelligent regulation and control module, the multi-layer collaborative structure sequentially comprises a shape memory alloy energy absorption layer used for resisting impact loads and a gradient pore foam metal buffer layer used for energy grading dissipation from inside to outside, and the multi-layer collaborative structure is connected with roadway surrounding rock in an anchoring mode through an anchor rod anchoring structure; the intelligent regulation and control module comprises a distributed optical fiber sensor array used for monitoring surrounding environment signals of surrounding rock in real time, an electrostriction driver used for regulating and controlling the rigidity of the multi-layer cooperative structure and a multi-channel data fusion terminal used for achieving underground and surface data transmission synchronization. By the adoption of the kilometer deep well roadway toughness regulation and control supporting system and the dynamic design method, the problems that a traditional supporting mode is too high in material rigidity, lacks dynamic regulation and control capacity and is insufficient in impact toughness can be solved.

The invention relates to the technical field of underwater engineering, and discloses a steel pipe pile cofferdam and a cofferdam construction method.The steel pipe pile cofferdam comprises a plurality of steel pipe columns, the two sides of each steel pipe column are each provided with a first lock catch and a second lock catch which extend in the length direction of the steel pipe column, and steel pipe piles are buckled in pairs through the corresponding first lock catches and second lock catches; a sealing cavity is formed between the first lock catch and the second lock catch, and the sealing cavity is sequentially divided into a sealing cavity, an induction cavity and a grouting cavity from the outer side to the inner side of the cofferdam; the sealing cavity and the sensing cavity are separated through the elastic water stop lips, and shape memory alloy wires are arranged in the elastic water stop lips. The cofferdam has the beneficial effects that the first layer of sealing structure is formed by arranging the mechanical seal, then the second layer of sealing structure and the third layer of sealing structure are formed by the elastic water stop lip and the grouting area, and water located on the outer side of the cofferdam is prevented from entering the inner side of the cofferdam step by step through the three layers of sealing.

The invention discloses stainless steel vacuum barrel welding equipment and a welding method, and relates to the technical field of welding equipment.The stainless steel vacuum barrel welding equipment comprises a main body, a sealing door is slidably connected to one end of the main body, a limiting mechanism is arranged in the main body, two sets of electric push rods are arranged in the limiting mechanism, and fixing plates are fixed to the two sides of the top end of the limiting mechanism; two sets of metal plates are arranged at one end of the sealing door, the metal plates and the sealing door are elastically connected through a plurality of sets of springs, and a first U-shaped block is fixed to one end of each metal plate. A linear motor is started through a control panel to drive a limiting mechanism to move outwards, a linkage clamping mechanism and a rotary telescopic mechanism are synchronously expanded outwards, electron beam welding is started after an external vacuum pump establishes a vacuum environment, the equipment adopts inner and outer double-side force application to ensure uniform clamping, a shape memory alloy compensates a high-temperature sealing gap, and a spring realizes automatic reset; and sealing failure caused by deformation and thermal deformation of the thin-wall cylinder is effectively prevented.

The invention relates to the technical field of electrofluid ink-jet printing, and particularly provides an electrofluid ink-jet printing system, which comprises an ink storage assembly, a printing assembly and a printing assembly, the metal spray head is made of shape memory alloy, and an ink flow channel is arranged in the metal spray head; the electric field generation assembly is arranged on one side of the metal nozzle; the heating assembly is arranged on one side of the metal nozzle; the image acquisition assembly is used for acquiring ink droplet image information including the ink droplets ejected by the metal nozzle; the controller is used for acquiring ink droplet edge characteristics according to the ink droplet image information, analyzing whether the metal nozzle is blocked or not according to the ink droplet edge characteristics, controlling the heating assembly to heat the output end of the metal nozzle when analyzing that the metal nozzle is blocked, and controlling the electric field generation assembly to enhance the electric field generated by the electric field generation assembly at the same time; the system can effectively solve the problem that the printing effect of follow-up electrofluid ink-jet printing is affected due to the fact that the spray head is damaged due to the fact that the voltage used for impacting blockages is too large.

The invention relates to the technical field of seabed base adjusting platforms, and discloses a seabed base self-adaptive leveling device and method based on shape memory alloy, and the device comprises a seabed base observation platform which is used for bearing instruments and equipment; the leveling supporting legs are uniformly distributed below the seabed-based observation platform and are used for realizing shock isolation and shock absorption and full-automatic and high-reliability leveling after the seabed-based observation platform touches the bottom by utilizing the shape memory effect and the superelasticity of SMA (Shape Memory Alloy); and the universal joint connecting mechanism is used for connecting the leveling support leg with the foot pad so as to adapt to and support slopes with different angles. The shape memory effect and the hyperelasticity of SMA are utilized, under the condition that an external power source and a complex control system are not needed, full-automatic and high-reliability leveling after the platform touches the bottom is achieved, and the technical problems that according to an existing leveling scheme, limitation of different degrees exists in the aspects of structure complexity, environment adaptability, long-term reliability and leveling precision are solved.

The present invention relates to a method and device for electrolytic machining with self - controllable deformation of a shape memory alloy electrode, belonging to the technical field of electrolytic machining. This method uses a shape memory alloy as the electrode material and the initial part profile line as the electrode shape. Through heat treatment, the electrode corresponds to different part profile line shapes at different temperatures. During electrolytic machining, the electrode is connected to a floating fixture, and the temperature of the electrolyte is regulated by the equipment to cause corresponding deformation at different positions. After the machining is completed, using the shape memory effect of the material, the electrode is heated to restore its shape. This method can not only achieve the machining of variable cross - sections but also reuse the electrode.

The invention relates to the technical field of high-power femtosecond laser manufacturing, and discloses a high-power industrial femtosecond laser water cooling structure and a thermal stability optimization method thereof. Comprising the steps that an adjustable flow resistance valve driven by a shape memory alloy is arranged in a cooling water channel in a machine shell water cooling plate, and a temperature sensor is embedded in a key position of the machine shell water cooling plate; a paraffin-based or metal-based phase change material is filled at the bottom of the heat dissipation chute of the shell water cooling plate; an ultrathin uniform-temperature plate is embedded in the water-cooling plate of the casing, so that heat of local hot spots, such as heat near a reflecting mirror seat, on the water-cooling plate of the casing is quickly diffused to the whole water-cooling plate; bionic guide vanes are arranged in the cooling water channel; an aerogel heat insulation layer is additionally arranged between the machine shell water cooling plate and the outer shell, the machine shell water cooling plate and the outer shell are connected through a titanium alloy connecting piece with a low expansion coefficient, and a flow channel cover plate and the machine shell water cooling plate are flexibly connected through a metal corrugated pipe.

The invention discloses a PICC (Peripherally Inserted Central Catheter) tip precise navigation fixing method and system based on electrocardiogram real-time positioning. High-precision positioning and safe fixing of a catheter tip are realized through a multi-modal data fusion and deep learning technology. The method comprises the following steps: collecting intracavity electrocardiosignals (ECG) in real time through a catheter built-in electrode, and obtaining blood vessel wall contact pressure and temperature data in combination with an optical fiber sensor; an improved wavelet threshold algorithm is adopted to dynamically suppress motion artifacts, and P-wave features are enhanced; the preprocessed ECG signals are input into a spatial-temporal feature fused Transformer model, a time attention layer is used for analyzing P-wave time sequence changes, a space attention layer integrates multi-lead space distribution features, and the positioning precision is optimized in combination with preoperative blood vessel anatomical data; the ECG positioning result and the optical fiber sensing data are fused through Kalman filtering, three-dimensional position information of the tip end of the catheter is generated, and real-time navigation is conducted on an augmented reality interface; and when the P wave amplitude reaches a CAJ threshold value, the contact pressure is safe and no abnormal temperature exists, a shape memory alloy (SMA) fixing ring is triggered to contract, and accurate fixing is achieved. The method solves the problems that a traditional method depends on X rays and is poor in anti-interference performance, has the advantages of being free of radiation, high in real-time performance and adaptive to blood vessel deformation, and is suitable for clinical P catheter implantation.

The present invention discloses a low-voltage driven electrochromic shape memory color-changing covered yarn, a preparation method and an application thereof, belonging to the technical field of covered yarns. It includes a first core layer, a second core layer and a third core layer. A lower-layer thermochromic yarn one is wound around the outer surface of a shape memory alloy filament one to form the first core layer, a lower-layer thermochromic yarn two is wound around the outer surface of a shape memory alloy filament two to form the second core layer, and a lower-layer thermochromic yarn three is wound around the outer surface of a shape memory alloy filament three to form the third core layer. An upper-layer thermochromic yarn wraps the first core layer, the second core layer and the third core layer to form a low-voltage driven electrochromic shape memory color-changing covered yarn. The winding directions of the lower layer and the upper layer are opposite. Based on the hollow spindle wrapping spinning method, the present invention can effectively integrate the dual functions of electrochromism and shape memory only by adjusting the feeding paths of each component yarn and the key spinning process parameters, so as to produce a low-voltage driven electrochromic shape memory color-changing covered yarn.

The invention discloses a glass bottle outer side paint spraying production device, and relates to the technical field of glass bottle machining, the glass bottle outer side paint spraying production device comprises a paint spraying machine box, a conveying assembly and a glass bottle fixing assembly.According to the glass bottle outer side paint spraying production device, through a flexible clamping structure formed by cooperation of a phase-change material and an air bag, self-adaption and lossless sealing of different bottle openings are achieved, and paint spraying vibration is effectively prevented; a supporting mechanism driven by a shape memory alloy in the bottle is combined, a temperature control rod is heated to trigger alloy phase change, a supporting strip is pushed to be evenly opened along a T-shaped sliding groove, stable inner supporting force is provided, rotating eccentricity is restrained, meanwhile, the temperature control rod transmits heat into the bottle through a heat conduction rod, the temperature of the bottle body is increased, paint leveling is promoted, the orange peel and sagging defects are reduced, and the paint spraying effect is improved. And a closed environment formed by sealed clamping further retains heat, paint film pre-drying is assisted, paint spraying uniformity, adhesive force and production efficiency are remarkably improved, and the device is suitable for automatic coating of high-precision glass bottles.

The invention discloses a control method for defrosting of a parallel flow evaporator, which comprises the following steps of: constructing a multi-dimensional state sensing network, constructing a three-dimensional state sensing matrix by utilizing a distributed temperature sensor array on the surface of an evaporator coil, an air inlet humidity sensor and an inlet and outlet differential pressure type pressure sensor, and acquiring information such as temperature distribution, environment humidity and air pressure difference; through dynamic threshold self-adaptive judgment, based on an environment temperature field, the historical temperature of an evaporator and an icing critical temperature field calculated by a time sequence prediction model, the defrosting triggering condition is judged by combining humidity and an air pressure difference change gradient field; gradient type energy injection defrosting is adopted, in the first-stage defrosting process, the refrigerant flow is adjusted through a proportional electromagnetic valve to conduct directional defrosting, and in the second-stage defrosting process, a compressor is closed, a fin gap shape memory alloy heating network is activated, and latent heat of a phase change material is released to conduct uniform defrosting. And performing multi-physical field cooperative regulation and control, constructing a coupling model, and adjusting the heating power and pulse modulation duty ratio sequence.

The invention provides a temperature-controlled shape memory alloy helical antenna capable of automatically unfolding and a control method, and belongs to the technical field of antennae, and the antenna comprises a helical radiation unit which is made of a shape memory alloy material and is of a multi-circle helical winding structure; the edge of the metal reflection unit is warped upwards to form an annular reflection cavity, and the metal reflection unit is used for enhancing the directivity and radiation gain of the spiral radiation unit; the supporting rod is of a multi-section coaxial nested structure, is vertically mounted in the center of the metal reflection unit and is used for providing stable axial support in the contraction and expansion process of the spiral radiation unit; the dielectric disc is mounted between the supporting rod and the spiral radiation unit; the metal via hole structure penetrates through the dielectric disc and is used for connecting a coaxial cable and the radiation structure to form a complete feed path; and the impedance matching arm structure is used for connecting the feed path and the spiral radiation unit and adjusting the impedance matching relation between the feed path and the spiral radiation unit so as to realize impedance continuity and radio frequency matching.

The invention provides a bending-adjustable balloon micro-catheter, and belongs to the technical field of balloon micro-catheters.The bending-adjustable balloon micro-catheter comprises a catheter body, a balloon, a bending mechanism and a feedback mechanism, the catheter body is of a slender tubular structure, and an inner cavity of the catheter body is used for conveying therapeutic drugs or embolism materials or other media; the balloon is located at the far end of the catheter body, is in an ellipsoidal shape and is used for blocking blood flow or expanding blood vessels. The multiple bending mechanisms are sequentially located at the middle section position of the catheter body and are composed of shape memory alloy wires, and the shape memory alloy wires are spirally wound around the outer wall of the catheter body, connected to the catheter body and used for adjusting the bending angle and direction of the catheter body; the feedback mechanisms are pressure sensor arrays, and the number of the feedback mechanisms is eight. The problems that an existing balloon micro-catheter is difficult to accurately reach a target position in a complex blood vessel or cavity, and the blood vessel is prone to being damaged can be solved.

The invention relates to the technical field of exoskeleton robots, in particular to an exoskeleton driving system with multi-mode torque coupling and intelligent-brain cooperative control, which comprises a flexible torque coupling mechanism, a holographic intelligent-brain cooperative control strategy, an energy safety integrated shield module and an ultra-light integrated magic body structure, wherein the flexible torque coupling mechanism is used for adapting to power and flexibility of different scenes and carrying out torque output and rigidity continuous adjustment; a holographic intelligent brain cooperative control strategy is fused with perception information, data are analyzed through quantum federal learning and a bionic algorithm, torque is optimized, and cooperative control is carried out; the energy and safety integrated shield module is used for constructing a double-safety system, and recycling is achieved through magnetorheological fluid kinetic energy recovery and shape memory alloy potential energy storage. The ultra-light integrated magic body structure is matched with the human body size to adjust the exoskeleton, and the man-machine cooperation response is improved through the composite carbon fiber material and the highly integrated design. Therefore, the problems of high energy consumption, complex mechanical structure, insufficient stability and the like in the prior art are solved.

The invention belongs to the technical field of bionic robots, and particularly relates to a multi-mode movement worm-imitating robot based on a paper folding structure. The worm-imitating robot adopts a modular design and comprises a functional module, eight wriggling modules and two rolling modules, main bodies of the functional module and the wriggling module are both of paper folding structures; each wriggling module has the bending deformation capacity in the axial direction and the eighth direction and can be anchored with the movement environment; a gripper of the functional module is used for gripping objects with different shapes and hardness, and is provided with a micro camera for environment detection; the rolling module has a rolling action capability; the robot is driven in a pneumatic mode and a shape memory alloy mode, and actuation is rapid and accurate; the upper computer controls all the function modules through wireless signals, and remote control over the robot can be achieved. According to the worm-imitating robot, machining simplification and overall light weight are achieved, and the deformability is greatly improved.

The invention relates to the technical field of high-voltage bushings, in particular to a 72.5 kV impregnated paper high-voltage bushing which comprises a sheath layer, an insulation paper layer, an impregnation medium, a flexible supporting structure, a temperature control layer, a self-healing insulation medium and a connecting end. The sheath layer is made of aluminum alloy and is used for providing mechanical protection and support; the insulation paper layer adopts multi-layer high-elasticity polyester impregnated paper, so that excellent electrical insulation performance is provided; the impregnation medium is selected from nano reinforced silicone oil and is uniformly filled between the insulation paper layers, so that the insulation performance is enhanced, and the moisture-proof and anti-pollution capacities are improved. The flexible supporting structure comprises a honeycomb-shaped FRP supporting layer and a shape memory alloy connecting piece, mechanical stress generated in transportation, installation and long-term operation can be effectively absorbed, and the structural integrity is kept under the complex environment such as foundation settlement or temperature change. The high-voltage cable has the advantages of high insulating property, high mechanical strength, excellent environmental adaptability and self-repairing capability, is suitable for transformer substations, power transmission lines and other high-voltage electrical equipment, and has wide application prospects.

The invention discloses a modular self-adaptive robot device based on SMA driving paper folding bionics. The modular self-adaptive robot device is composed of peak folding rods, valley folding rods, SMA wires, a magnetic attraction connecting structure and a 3D printing bottom plate, and self-adaptive operation is achieved through driving-sensing-structure integrated cooperation. The SMA wires have driving and sensing functions, structural deformation is driven through PWM, resistance change of the structural deformation is measured in real time, and axial telescoping, radial telescoping and bending of the module can be controlled in a closed-loop mode without an external sensor. The device is combined based on the lever amplification principle, tiny deformation of the SMA wire is efficiently converted into large-stroke output of a mechanism, and the problem that the stroke of an SMA driver is limited is solved. A single module has three modes of radial expansion, linear actuation and torsion joint, and complex movement can be completed through combination. A plurality of modules are connected in series with a quick connecting piece through magnetic attraction, and the functions of bionic wriggling, rod cable climbing or multi-section operation arm can be achieved through time sequence programming. And a flexible and reconfigurable robot solution is provided for detection and rescue tasks in a complex environment.