151results about How to "Deformation fast" patented technology

A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.

This invention relates to a strain monitor system for slope distributed fibers, which lays out several parallel special optical cables along the slope or at least lays out one close to the slope top and the corner separately, adheres symmetrically two fibers on the outer surface of a tilt testing tube to get the distortion of deep soil helped by the strain of the tube, the special optical cables are melted orderly to constitute a sensor circuit to be connected to BOTDR, which links with remote computers via local computer and internet to constitute distributed fiber strain monitor system and gets the distortion or displacement of the slope by integrating and summing the measured strain distribution further to evaluate and preset to the side slope.

The invention discloses a variable trailing edge wing driven by combination of a shape memory alloy and a piezoelectric fibrous composite material, and relates to a variable trailing edge version wing driven by two different drivers. The problems that when an SMA (shape memory alloy) is used for driving, the response speed is slow, and when an MFC (fibrous composite material) is used for driving, the driving force driven is small are solved. The variable trailing edge wing comprises a skin, a fixing piece, a moving piece, at least one pair of shape memory alloy wires, at least one pair of elastic parts and at least one pair of piezoelectric fibrous composite materials, wherein the fixing piece is connected with the moving piece through the at least one pair of flexible assemblies, the at least one pair of shape memory alloy wires are arranged between the at least one pair of elastic parts, the at least one pair of shape memory alloy wires are respectively connected with the fixing piece and the moving piece, the moving piece can rotate through rolling the fixing piece, the skin is coated on the outer surfaces of the fixing piece and the moving piece, the moving piece comprises an upper plate, a lower plate and a connecting plate, and the upper plate, the lower plate and the connecting plate are connected into a whole and is of a ring-shaped structure. The variable trailing edge wing provided by the invention is used for manufacturing the wings on airplanes.

The invention discloses a bionic aircraft which realizes the conversion of a flapping rotor and a flapping wing flight mode based on a deformable wing, and belongs to the technical field of bionic aircraft design. When it is in vertical take-off, landing and hovering, it is a flapping rotor flight mode, and its structure is characterized by that the flapping wings on both sides are mounted in an axisymmetric manner, that is, the airfoils on both sides are antisymmetrical; When in forward flight or gliding, the flapping wing or fixed wing flight mode is characterized by symmetrical mounting ofthe flapping wing on both sides in a fixed wing symmetrical manner, i.e., symmetrical wing profiles on both sides. At that same time, an elastic bow beam is adopt, In the structural design of deformable wing rib composed of chord and multi-bar mechanism, when the shape of deformable wing is changed, by rotating the tie rod installed at the root of wing and the cable connecting each wing rib, the multi-bar mechanism is pulled to force the connected bow beam to produce the elastic deformation required, that is, the overall structure of the airfoil is kept unchanged, but the leading edge and thetrailing edge of the deformable wing are interchanged. The invention simplifies the driving mechanism and the integral configuration of the aircraft, and remarkably improves the aerodynamic efficiencyand the lift coefficient.

The invention relates to a target forecasting and tracking method based on a recurrent neural network. The method includes the steps: firstly, extracting characteristic information according to a current video frame, acquiring 1000-dimensional characteristics by a single network of an SFE-Net+ model and inputting the characteristics to a motion model SM-Net; secondly, forecasting the center position of a target in a current frame according to the characteristic information and the center position of a previous frame target by the SM-Net of a time structure; thirdly, selecting a certain numberof candidate boxes from the periphery of the center position in a random sampling mode; finally, inputting the candidate boxes to a matching model SMT-Net, judging similarities of the candidate boxesand target boxes of a first frame one by one, and selecting the candidate boxes with the highest similarity. An area occupied by the candidate boxes with the highest similarity in an original image isa final area of the target in the current frame. Objects can be tracked in complicated situations.

A capacitance element electrode (E1) and a reference electrode (E31) are formed on a substrate (20) so as to be opposite to a displacement electrode (40). A dome-shaped movable switch electrode (E21) is disposed so as to be in contact with the reference electrode (E31) and at a distance from a fixed switch electrode (E11) formed inside the reference electrode (E31), and to cover the fixed switch electrode (E11). When an operation is applied to a detective member (30) and a portion of the movable switch electrode (E21) in the vicinity of its top is displaced to be brought into contact with fixed switch electrode (E11), a switch is turned ON. On the other hand, from a change in capacitance value of a capacitance element (C1) formed between the displacement electrode (40) and the capacitance element electrode (E1), the intensity of the force to the detective member (30) can be recognized.

The invention relates to a method for managing a complex spacecraft three-dimensional model. Framework models of the complex spacecraft three-dimensional model are divided into a configuration-layer framework model and a layout-layer framework model from top to bottom. The configuration-layer framework model is a first-layer framework model and is composed of top layer coordinate systems for expressing a spacecraft, large system interfaces, complete machine configuration and cabin interfaces. The layout-layer framework model is a second-layer framework model and is used for expressing layout information of single equipment, loads and structural mechanisms of all subsystems in the spacecraft on the basis of receiving configuration layer information, a single equipment coordinate system is built, transmission from top to bottom is carried out through the uniform coordinate system of the whole spacecraft three-dimensional model, the uniform data transmission and assembling standard is built, three-dimensional model information is managed, the changeability and accuracy of the spacecraft three-dimensional model are improved, cooperation and integration between designers are achieved, and therefore fast derivation and deformation of serialization products are achieved.

A dynamic golf cleat having a plurality of composite dynamic traction elements, the wherein the elements preferably assume an angle with respect to the plane of the shoe sole, to allow room for deflection toward the shoe sole under load. The dynamic traction element is preferably formed of an elastomeric material such as thermoplastic urethane. A hub portion having a threaded attachment means is preferably oriented perpendicular to the plane of the shoe sole. Extending outwardly in a radial manner from the hub portion is a plurality of embedded thin tensile members oriented to be integrally formed within each flexible traction element. Each individual tensile member is centrally located within each dynamic traction element creating a distinct upper surface area and a lower surface area, within each dynamic traction element. Said sections of the dynamic traction elements have facing surfaces joined by a thin tensile member sections. These thin tensile member sections are molded integral with the two flexible traction element, an upper surface area and a lower surface area.

The invention relates to the technical field of piezoelectric ceramic power generation, and provides a piezoelectric ceramic power generation method and device. The device comprises an elastic piezoelectric ceramic piece, a driving mechanism and a switching device, wherein when an external acting force is applied to the driving mechanism, the driving mechanism transfers the external acting force to the switching device; when the force applied to the switching device is less than a first preset force, the switching device does not act or is deformed within a preset range; when the force appliedto the switching device is more than the first preset force, the switching device acts quickly to impact the elastic piezoelectric ceramic piece, and thus the elastic piezoelectric ceramic piece generates electric energy. According to the device and method provided by the invention, the switching device with a first state and a second state is used, the effect of setting the driving threshold forthe external acting force is achieved, the corresponding quick deformation speed is also transferred to the elastic piezoelectric ceramic piece, and thus the more power is generated.

A bridge viscous damping shock-absorption supporting seat comprises a supporting seat soleplate, an intermediate basin plate, a supporting seat top plate, a steel lining plate and a viscous dampers, wherein the viscous dampers isare installed on the front side and the rear side or the left side and the right side of the intermediate basin plate along the longitudinal direction or the transverse direction of a bridge or installed on the front side, the left side, the right side and the rear side of the intermediate basin plate along the longitudinal direction and the transverse direction of the bridge, two ends of each of the viscous damper are respectively connected with a connection block fixed on a supporting seat soleplate through bolts, the side surface of the intermediate basin plate, which is close to the viscous damper, is provided with a side bayonet, the side bayonet respectively clamps two end surfaces of a viscous damper working cylinder, the supporting seat soleplate is provided with a shearing plate along the longitudinal direction or the transverse direction of the bridge or simultaneously provided with the shearing plate along the longitudinal direction and the transverse direction of the bridge, and the shearing plate is fixedly connected with the supporting seat soleplate through a shearing pin. Due to the adoption of the bridge viscous damping shock-absorption supporting seat, the service life of the viscous damper can be prolonged, no starting rigidness exists under the static situation, no additional internal stress is produced, energy can be consumed rapidly in earthquake, and the acceleration and displacement of the bridge can be reduced.

The invention belongs to the technical field of preparation of macromolecular metal composite materials, and relates to a method for preparing an electroactive ionic polymer-metal smart electric driving composite material. The material prepared by the method has the characteristic of smart deformation under low direct current voltage driving. The method comprises process steps of: preparing ternary ionic copolymer; preparing an ionic polymer and metal composite film; and preparing surface electrodes on two sides, wherein emulsion polymerization monomer is distilled under reduced pressure by using an emulsion polymerization method, a polymerization inhibitor is removed, and the monomer is placed in a refrigerator for later use during the preparation of the ternary ionic copolymer; the ionic polymer-metal composite film is obtained by pouring nano latex in a shallow glass channel type flat bottomed mould under atmospheric environment during the preparation of the ionic polymer-metal composite film; and a micron-thick metal plating is prepared through a chemical reduction method or a conductive filler-containing conductive coating is coated by using a physical spin coating method during the preparation of the surface electrodes on the two sides. The method has the advantages of simple preparation process, high toughness of prepared products, low cost and no environmental pollution.

A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.

The invention discloses a glass substrate air flotation device with a deformation detection function. The glass substrate air flotation device comprises a transporting platform, a fixed platform and a base. The fixed platform is connected with the base through supporting columns. Driving devices used for driving a glass substrate to move are arranged on the two sides of the transporting platform. The transporting platform is provided with a plurality of conveying air holes arranged evenly. A sintered metal porous material is embedded in the top end of each conveying air hole. The bottom of each conveying air hole is connected with an air conveying pipe. The air conveying pipes are connected with a pressure reduction valve through a flowmeter. The pressure reduction valve is connected with an air source through a hose. At least two small holes are formed in the periphery of each conveying air hole of the transporting platform, the bottom of each small hole is connected with a pressure sensor through an air pipe, and the pressure sensors and the signal output end of the flowmeter are connected with an input conversion module. The glass substrate air flotation device with the deformation detection function has the advantages of being clean, free of pollution, heating and magnetism generation and the like, and a pneumatic system is easy to maintain and simple in structure.

The invention provides a resin / silane compounded passivation liquid for galvanized coil steel and a preparation method of the resin / silane compounded passivation liquid, and belongs to the technical field of chrome-free passivation of a galvanized plate. The passivation liquid comprises the following constituents by weight percent: 0.01 to 10 percent of inorganic fluorine-containing acid, 0.01 to 10 percent of organic acid, 0.01 to 5 percent of silane coupling agent, 0.01 to 5 percent of resin, 0.01 to 5 percent of inorganic nano particle, 0.01 to 5 percent of dispersing agent, and water in balancing amount. According to the method provided by the invention, a layer of organic / inorganic composite film can be formed on the surface of the galvanized coil steel, so that the corrosion resistance and the adhesive force are excellent, and the performance is superior to that of a passive film made of a chromizing liquid. The invention has the advantages that the cost is low; the process is simple; the stability is high; the environmental pollution is low; and the economic and the social benefits are higher.

A composite sealing material to be installed in a sealing groove includes a first sealing member that is located on the outer peripheral side of the sealing groove and that is made of an elastic member; and a second sealing member that is located on the inner peripheral side of the sealing groove and that is made of a material harder than the first sealing member, wherein the first sealing member is provided with a crosswise protrusion formed projecting in a radial inner direction from a radial inner side of the almost central section of the thickness direction; the second sealing member is formed in an almost cross sectional C shape by flange portions and formed at the both ends and an inner wall portion in an almost linear shape for connecting the flange portions; and a space is ensured between the crosswise protrusion and the inner wall portion in an almost linear shape of the second sealing member in a state that the first sealing member and the second sealing member are assembled in an integrated manner.

The invention relates to a transformation robot as well as a transformation method and a combined-steering-engine automatic reset method thereof. The transformation robot comprises a robot-body main body (1), standing components (3) and supporting components (4), wherein the standing components (3) are arranged at the lower part of the robot-body main body (1); the supporting components (4) are arranged on two sides of the upper part of the robot-body main body (1); the standing components (3) and the supporting components (4) are rotationally connected with the robot-body main body (1) respectively; the transformation robot also comprises a work executing component; the work executing component is arranged at the back of the robot-body main body (1). Compared with the prior art, the transformation robot has the beneficial effects that the transformation of an engineering vehicle is realized through the work executing component; the supporting components can be enabled to support the robot-body main body during transformation through the supporting components; the driving power when the standing components are used for carrying out standing is reduced by a wide margin; the stress balance during the transformation is ensured; the quick transformation is realized, and meanwhile, the transformation robot can be also used for realizing the automatic reset of a combined steering engine of the transformation robot.

The invention discloses a moving target tracking method based on multi-target characteristics and an improved correlation filter. The method comprises the following steps: inputting position information of a tracked target in a tracking video sequence and an initial frame; extracting multi-channel features of the target to achieve comprehensive information representation of the target; constructing a pixel reliability graph to perform constraint optimization on a correlation filter, and limiting the correlation filter in an image area suitable for tracking; reducing the number of parameters inthe model by using a linear dimension reduction operator, and training a compact sample classification model; performing secondary optimization on the correlation filter through a Gauss-Newton methodand a conjugate gradient method to obtain an optimal correlation filter; responding to the improved correlation filter and the extracted target features of the target search area, and determining theposition of a target tracking box; jointly updating the filter model and the pixel reliability diagram; and outputting a tracking result map. According to the method, moving targets in most scenes can be effectively tracked, and the method has good tracking precision and real-time performance.

The invention relates to a preparation method of a multi-response graphene / graphite oxide film. The method comprises the following steps of: ultrasonically dispersing the graphite oxide in deionized water to obtain a graphite oxide aqueous solution, and then, regulating the pH value to 2-6 by using acid; placing an active metal plate in the graphite oxide aqueous solution, placing the graphite oxide aqueous solution on a horizontal platform and maintaining temperature of 10-15 DEG C, standing, taking out the active metal plate 1-7 days later, washing, drying, and peeling off the film, then, thereby obtaining the multi-response graphene / graphite oxide film. The preparation method provided by the invention is simple, and can implement large-scale and low-cost production.

Disclosed is an ultrasonic piezoelectric pump in which a piezoelectric pump is integrated with a fluid pipe without a check valve so that the structure can be simplified. The pump includes a fluid pipe having a hollow part formed therein to permit a fluid to flow from a fluid source, a piezoelectric actuator inserted into the hollow part and including a piezoelectric device and a plurality of fluid holes, a controller connected to a lead wire to apply a driving power to the piezoelectric device, and a tapered nozzle inserted into the hollow part in front of the piezoelectric actuator and tapered forward and downwardly.

A structure of support frame featuring fast warping up and closing is mountable to a back surface of an electronic device and includes a cover and at least one bendable mechanism. The cover is mounted to the back surface of the electronic device. The bendable mechanism is mounted to the back surface of the cover and includes at least one deformable plate that is curved and shows a circular arc form. The deformable plate is provided with a depression spot. As such, pressing down the depression spot causes the deformable plate that is of a circular arc form to undergo flattening deformation, making ends of the deformable plate fast warping up in an outward direction. With the warping portions of the deformable plate, a function of supporting or clamping can be realized to hold the electronic device on an object or be worn on a human body.

The invention belongs to the technical field of computer vision, and discloses an unmanned aerial vehicle target tracking method and system based on color histogram similarity, and the method comprises the steps: extracting HOG, CNN and CN features of a to-be-tracked target as a feature subset for the initialization of a position filter, and increasing the number of samples through the overturningand the training of depth features through different sample labels; performing target search by using the trained filter to obtain a target position and a target scale; adding the current frame picture and the tracking result into a sample space and updating a sample space model; performing update discrimination by using the color correlation discrimination model and the primary and secondary peak discrimination model, and updating the position filter when the color histogram correlation of the predicted target and the previous frame target is relatively high and the difference between the primary and secondary peaks in the confidence map is obvious; and finally, updating the scale filter, and outputting a complete target position. According to the invention, complex conditions such as rapid target movement, large-amplitude deformation and shielding during target tracking of the unmanned aerial vehicle can be effectively handled.

The invention discloses application of a magnetic elastic material to 4D printing, and belongs to the technical field of composite magnetic materials and 4 D printing. A magnetic element and a flexible substrate material form compound slurry, then the compound slurry is printed into a three-dimensional structure through direct ink writing, the three-dimensional structure has the structure-variablecharacteristic along with the fourth dimension time change under the effect of an applied magnetic field, and then 4D printing is achieved. By utilizing a 4D printing technology, the printed three-dimensional structure can quickly deform under the effect of the applied magnetic field, and non-touch regulation of the three-dimensional structure is achieved.

A microelectromechanical system comprises a beam and an electrode coupled to the beam via electrostatic interaction. The beam is designed to undergo elastic flexural deformation and has an approximately constant cross section. The beam consists of several flat faces that extend over the length of the beam, each having a thickness of less than an external dimension of the cross section. A flexural vibration frequency of the beam is then increased compared with a solid beam of the same external dimensions. Such a microelectromechanical system is suitable for applications requiring very short transition times, or for producing high-frequency oscillators and resonators.

The invention discloses a real-time object tracking method based on video inter-frame low-rank associated information consistency. The method comprises the following steps: during the target object characteristic description period, giving position information in an initial video by a user at first and then performing characteristic description on a target object and a candidate region in a next frame by compressive sensing of local restrictions; during the inter-frame low-rank association analysis period, extracting key descriptions from a target object characteristic library to form a local characteristic library, and performing low-rank decomposition on the local characteristic library and the characteristic descriptions of the candidate region together to obtain a sparse matrix; calculating an inter-frame low-rank associated prior and cover mask; outputting a current target object position according to the sparse matrix and the inter-frame low-rank associated prior and cover mask; updating a target library, performing global low-rank analysis on a target characteristic library, and replacing the low-rank description with the best commonality with a current target object description. The method is capable of stably tracking a single object in the video for a long time in real time, and has the characteristics of high tracking speed, high tracking precision and the like.

The present invention discloses a cored wire for modifying and removing foreign materials in a container filled with steel. The wire core components of the cored wire comprise, by mass, 20-90% of CaO, 9-45% of Al2O3 and 1-35% of CaF. With the cored wire, the formations, the sizes and the quantity distributions of the foreign materials in the molten steel can be stabilized; the foreign materials in the molten steel can be effectively removed; the smelting cost can be reduced; the purity of the molten steel can be improved; the traditional calcium treatment of the aluminum-killed steel can be replaced.

The invention relates to a foil stamping method according to which a surface of a printing product (D) is provided with an adhesive layer in places intended to be imprinted prior to a transfer film (9), which consists of a carrier film and a transfer layer adhering thereto by means of a release layer, being placed onto the printing product (D) under the effect of pressure, the transfer layer sticking to the printing product (D) in places intended to be imprinted. Prior to foil printing, an applicable adhesive is applied to the printing product (D), instead of or in addition to the adhesive layer, in the places intended to be semi-embossed and the pressure acts evenly across the entire surface of the printing product (D), namely also on the raised places resulting from semi-embossing and the remaining surroundings during foil printing. The invention further relates to a foil stamping device for transferring a transfer layer which adheres to a carrier film onto the printing product (D) in places intended to be imprinted, said foil stamping device comprising a conveying system (1) for the printing product (D), adhesive application means (2), arranged on the conveying system (1), which provides a surface of the printing product (D) with an adhesive layer in places intended to be imprinted, a foil transfer means (3) having a transfer roller (31) and a foil feeding means (4) associated with the foil transfer means (3), the outer surface of the transfer roller (31) being covered with an elastic cover of a small thickness.

An actuator using a piezoelectric element is stably operated at high speed. The actuator includes driving units provided to face a carrier stage and moving the carrier stage in an X-axis direction, piezoelectric elements provided to the driving units respectively and expanding and contracting in the X-axis direction, a carrier electrode provided on a surface of the carrier stage on a driving-unit side, and driving electrodes provided on surfaces of the driving units on a carrier stage side and electrostatically adsorbing the carrier electrode. Signals not synchronized with each other are applied to the piezoelectric elements.