72results about How to "Achieve bending deformation" patented technology

The invention discloses a dielectric-varied capacitive flexible three-dimensional force tactile sensor. The dielectric-varied capacitive flexible three-dimensional force tactile sensor is characterized in that a flexible printed circuit board is arranged, wherein a square common electrode and four identical rectangular induction electrodes which are located on the periphery of the edges of the common electrode in an equidistant mode are printed on the printed circuit board; the induction electrodes are in two-to-two symmetry with the center of the common electrode serving as the symmetry point; a composite multi-dielectric layer is fixed to the flexible printed circuit board; the composite multi-dielectric layer is formed by an inversely-concave PDMS dielectric layer and an air dielectric layer located in a groove of the PDMS dielectric layer; the composite multi-dielectric layer is buckled on the upper portion of the flexible printed circuit board, and the common electrode and the four induction electrodes are located in the air dielectric layer; a PDMS hemispheric contactor is arranged on the composite multi-dielectric layer. According to the dielectric-varied capacitive flexible three-dimensional force tactile sensor, the common electrode and the induction electrodes are located on the same plane; compared with a traditional capacitive tactile sensor of an up-down electrode structure, the dielectric-varied capacitive flexible three-dimensional force tactile sensor has the advantages of being simple in manufacturing process and capable of being easily arrayed.

The invention provides a touch sensor based on flexible voltage-sensing conductive rubber. The invention is characterized in that a sensing unit has a structure form that: a flexible circuit board is used as a motherboard, the disc-shaped flexible voltage-sensing conductive rubber is arranged on the flexible circuit board and is electrically connected with an electrode distributed on the flexible circuit board, a stress surface at the top part of the flexible voltage-sensing conductive rubber is covered by a force transmitting hemisphere; the flexible circuit board is in a four-electrode structure, wherein, a public electrode A is a center circle electrode which is positioned on the concentric position together with the disc-shaped flexible voltage-sensing conductive rubber, a signal electrode B, a signal electrode C, and a signal electrode D which are at an angle of 120 degrees between every two are fan-shaped electrodes that are evenly distributed on a same torus of the periphery of the public electrode A. The invention relates to the touch sensor which has the advantages of strong surface suitability, high reliability, simple signal collecting circuit, and convenient manufacture, and also can be used for the three dimensional force detection.

The invention relates to a complex double-curvature creep aging forming device, wherein a thinking design of adjustable longitudinally-symmetrical multipoint bending deformation is adopted so that the complex single/double-curvature creep aging forming of a ribbed wallboard can be conveniently and easily realized. The complex double-curvature creep aging forming device provided by the invention mainly comprises an upper bracket 5, a lower bracket 12, a pressing plate 6, a guide plate 7, a compression bar 8, support bar 10, a double-head stud 1, four hexagon nuts 3, a flat washer 4, a hexagon bolt 2 and a lower connecting plate 11, wherein wallboards with different shapes and thicknesses are placed at a sample wallboard 9; the symmetrically-arranged hexagon nuts 3 are rotated to passes through the pressing plate 6 and the guide plate 7; load is applied to the wallboard 9 through the compression bar 8 arranged on the guide plate; and four adjustable symmetrically-arranged support bars 10 are arranged below the wallboard to ensure that the wallboard is deformed and various different initial curvature shapes of the wallboard 9 can be obtained through adjusting the positions of the compression bar 8 and the support bar 10 and the different fastening degrees of the hexagon nuts. According to the complex double-curvature creep aging forming device disclosed by the invention, the design of adjustable loading and supporting positions is adopted and suitable for the single/double-curvature bending deformation of a complex ribbed wallboard. Compared with a conventional device, the device provided by the invention has the advantages of simple and reliable structure and convenience for operation and is suitable for various heating devices.

The invention discloses a seabed landslide monitoring device and method based on an MEMS sensor, and belongs to the technical field of seabed monitoring. A monitoring unit consists of a plurality of monitoring subunits which are connected in series. The monitoring unit is placed in a protection cover. The monitoring unit enables a monitored signal to be transmitted to a processing unit. The processing unit enables the processed signal to be transmitted to a computer terminal. A power module supplies a working voltage to a data processor. The MEMS sensor is fixed in a long pipe through a damping piece. One end of the long pipe is connected with one end of a soft connection pipe. The power module is connected with the MEMS sensor, and supplies the working voltage to the MEMS sensor. The MEMS sensor is connected with a data input port of the data processor. The data processor enables the processed data to be transmitted to the computer terminal. The device and method can achieve the monitoring and data recording of the changes of multiple layers of a seabed, achieves the monitoring of a single point to a plurality of points so as to form a three-dimensional monitoring plane, provides visual data for the research of the changes of the stratum of the seabed, and provide information support for the early-warning services of the seabed landslide.

The invention relates to a multi-degree-of-freedom rigidity-adjustable pneumatic flexible operation motion arm comprising large pedestals on upper and lower ends. a central nylon wire traverses a plurality of slices in the center and is fixed on the large pedestals on two ends to form a driving framework, more than three small pneumatic arms are symmetrically distributed and are adhesively fixed on the periphery of the driving framework in the direction being parallel to the central nylon wire, the small pneumatic arms are surrounded by a composite film, annular nylon fibers which can carry out rigidity adjustment through adjusting vacuum are pasted on the outer wall of the composite film from top to bottom, a sealing clamp is fixed on the outer wall of the composite film which surrounds the outer side of the large pedestals, a packaging jacket packaged by a sealing band is fixed on the outer side of the sealing clamp, an enclosed cavity is formed between the packaging jacket and the outer wall of the composite film, the enclosed cavity is provided with a vacuum-pumping port, each small pneumatic arm is a sealing cavity formed in a way that a composite film is wound on a small top pedestal and a small bottom pedestal, and each sealing cavity is provided with a driving gas ingate. The multi-degree-of-freedom rigidity-adjustable pneumatic flexible operation motion arm is advantaged by relatively-large complex deformation and rigidity maintenance and the like.

The invention discloses a flight vehicle deformable nose cone with a parallel mechanism. The deformable nose cone comprises N annular body segments and N-1 deformable driving mechanism. Each deformable driving mechanism comprises a first driving rod assembly and a second driving rod assembly, wherein one end of the first driving rod assembly is connected with the annular body segment behind the first driving rod assembly and can move horizontally in the axial direction of the first driving rod assembly, and the other end of the first driving rod assembly is connected with the annular body segment in front of the first driving rod assembly in a pivoted mode; and one end of the second driving rod assembly is connected with the annular body segment behind the second driving rod assembly, can move horizontally in the axial direction of the second driving rod assembly, and can pivot around the pivoting axis perpendicular to the axial direction of the annular body segment, and the other end of the second driving rod assembly is connected with the annular body segment in front of the second driving rod assembly in a pivoted mode. Stretching out, drawing back and bending of the deformable nose cone are achieved through the annular body segments with matching of translation of the first driving rod assemblies, translation of the second driving rod assemblies and pivoting of the second driving rod assemblies. The deformable nose cone is capable of achieving elongation and bending deformation, large in deformation amount and flexible in deformation posture.

The invention discloses a torque wrench based on shape memory alloy. The torque wrench comprises a wrench head, a driving device, a wrench handle and a handheld operation mechanism which are connectedsequentially. The driving device is used for driving the wrench head. The wrench handle comprises a first connecting disc and a second connecting disc which are arranged at the two ends of the wrenchhandle correspondingly. The first connecting disc and the second connecting disc are connected through a plurality of handle shape memory alloy (SMA) wires. The handle SMA wires are sleeved with handle reset springs. At least one installing disc is further arranged between the first connecting disc and the second connecting disc and is provided with installing holes, and the handle reset springscan penetrate through the installing holes to be installed. The driving device comprises a first SMA drive. The first SMA drive comprises a first fixed disc, a first installing seat, a first rotary disc I, a first rotary disc II, a first SMA wire I, a first SMA wire II, a first rotary wheel I and a second rotary wheel II. The first installing seat, the first rotary disc I, the first rotary disc II, the first SMA wire I, the first SMA wire II, the first rotary wheel I and the second rotary wheel II are arranged on the first fixed disc. The torque wrench is small in size and weight, large in output power and provided with the wrench handle of a flexible structure, the angle can be adjusted, and the application requirements of pipelines, small spaces and other working conditions are met.

The invention discloses a pneumatic flexible composite bionic mechanical hand. The pneumatic flexible composite bionic mechanical hand is composed of bionic finger parts and a bionic palm part. Each bionic finger part comprises a base body, a first air cavity, a first air cavity channel, a non-extension layer, a second air cavity, a second air cavity channel and a ventilation plug. According to the technical scheme, pneumatic flexible composite bionic mechanical fingers take the index finger structure parameter of which the function ratio is the highest as a reference, and double-joint pneumatic actuators are adopted to replace human hand three-joint fingers so that the effect that the structure is simplified while effective grabbing is achieved can be realized.

The invention provides a magnetofluid-driven inchworm-like soft robot. The robot comprises a head component, a trunk component and a tail component. The head component and the tail component are located at the two ends of the trunk component correspondingly and are centrosymmetric with respect to the truck component. Triangular standing feet in the same direction are arranged on the bottom surfaces of the head component and the tail component correspondingly, and meanwhile, cavities are formed in the head component and the tail component correspondingly so that magnetofluid can be stored. Thetrunk component is divided into two categories which are the solid tubular trunks and the arc-shaped trunk located in the center. One ends of the two solid tubular trunks with circular cross sectionsare in sealed connection with the two ends of the arc-shaped trunk correspondingly, and the trunk component is in an arc shape as a whole. The other ends of the two solid tubular trunks with the circular cross sections are connected and sealed to the head component and the tail component correspondingly. A cavity is formed in the arc-shaped trunk and used for storing magnetofluid. Twisting steering is achieved by applying a transverse electric field to the head or the tail by the outside, and the robot can imitate an inchworm and advances in a stretching-out and drawing-back mode by applying alongitudinal electric field to the trunks by the outside.

The invention discloses a liquid membrane lens combined zoom optical system, and belongs to the technical field of the zoom optical system. The system is mainly formed by combining multiple liquid membrane lens, and further comprises a lens cone for fixing multiple liquid membrane lens, a liquid injection control system for controlling the liquid membrane lens liquid injection, and an imaging resolution analysis system. The amount and combined arrangement of the liquid membrane lens are determined according to the zoom range, the lens back focal length and an aberration compensation requirement, the liquid injection control system is used for controlling the surface deformation of each liquid membrane lens to realize single liquid membrane lens zoom, and the large-range zoom and aberrationcorrection can be realized through the zoom combination of multiple liquid membrane lens. The imaging of the liquid membrane lens combined zoom optical system is output to the imaging resolution analysis system, the imaging resolution analysis system is used for performing resolution analysis on an imaging result, the feedback control is performed on the liquid injection control system accordingto the resolution analysis result, thereby realizing the automatic zoom and aberration compensation of the liquid membrane lens combined zoom optical system.

The invention discloses a design method of a flexible bionic robot fish adopting rope redundant actuation. The design method reproduces the uneven distribution of spine stiffness of a fish body by designing different types of flexible fish body spine models, and simulates a unique deformation process of the fish body by adding the redundant actuation. The design method of the flexible bionic robotfish adopting the rope redundant actuation reproduces the uneven distribution of the spine stiffness of the fish body by adopting a mode of superposing a continuous elastic beam and a multi-spine module, and simulates the unique deformation process of the fish body by adding the redundant actuation. The structure entirely considers the influence of the stiffness characteristics of the fish on thepropulsion performance of the fish, and has important significance for improving the swimming performance of the bionic fish.

The invention discloses a multi-stage driven connecting rod type nose cone variant mechanism which comprises a first-stage connecting rod mechanism, a second-stage connecting rod mechanism, a third-stage connecting rod mechanism, a bending deformation mechanism and a locking device. The first-stage connecting rod mechanism, the second-stage connecting rod mechanism, the third-stage connecting rodmechanism and the bending deformation mechanism are connected in sequence. The locking device is mounted on each stage of connecting rod structure; the first-stage connecting rod mechanism, the second-stage connecting rod mechanism and the third-stage connecting rod mechanism are used for driving all stages of connecting rod mechanisms and a nose cone shell of the connecting rod mechanisms to movein an axial direction through graded hydraulic drive, and axial stretching deformation of a nose cone is completed. A locking device is used for locking a position when each stage of connecting rod mechanism deforms in place; and the bending deformation mechanism is used for driving all stages of connecting rod mechanisms to integrally move to finish bending deformation of a nose cone. Axial multistage stretching deformation and single-side bending deformation can be achieved, and meanwhile motion limiting and variant locking in a nose cone deformation process can be achieved.

The invention relates to soft robots, in particular to a pneumatic inchworm-like soft robot based on a 3D printing technology. The robot is characterized in that a head part and a tail part are located at the two ends of a trunk part; the head part and the tail part are both solid bodies, triangular stand feet in the same direction are arranged at the bottom ends of the head part and the tail part, and the other ends of the head part and the tail part are connected with the two ends of the trunk part in a sealed mode; and the trunk part is arc-shaped, the cross section of the trunk part is square, an arc-shaped cavity is formed in the trunk part, the arc-shaped cavity is a composite M-shaped cavity formed by connecting five trapezoidal cavities in the same plane, the composite M-shaped cavity is distributed in an axial symmetry mode by taking a central vertical axis of the trunk part as an axis, and an air guide hole is formed in the trunk part and used for feeding gas. According to the robot, the pneumatic and cavity deformation is adopted to form redundant drive, so that the bending deformation of the soft robot is achieved; and air is fed in and discharged from the cavity in thetrunk to promote the composite M-shaped cavity to expand and contract so as to control the motion advancing stride of the soft robot.