677 results about "Relative displacement" patented technology

The invention discloses a sensor clamping mechanism and a mutual inductor crimping fault detection device and method, and relates to the technical field of mutual inductor detection. In a project verification process of an existing voltage-withstanding table and an error table, abnormal conditions such as inclination of a mutual inductor body, inaccurate tray positioning, abnormity of a magnetic switch, air leakage of an air cylinder air pipe and the like occur, so that a terminal stud of a test table cannot be in contact with a secondary side terminal of a mutual inductor to be tested; and detection interruption or false detection of a corresponding mutual inductor exists, so that the verification efficiency is reduced. According to the frame body, the measuring rod, the elastic piece and the sensor, the sensor can detect the relative displacement between the measuring rod and the frame body, if the relative displacement is within a normal range, the terminal stud is in successful crimping contact, and if the relative displacement exceeds the normal displacement range, the terminal stud has a crimping fault. Therefore, the system judges that the wiring terminal of the to-be-detected mutual inductor is failed in crimping with the wiring end, automatically identifies the crimping fault of the wiring end, and improves the operation efficiency of an assembly line.

The invention belongs to the technical field of soil pile testing, and particularly relates to a full-size static sounding soil squeezing pile penetration depth and ultimate bearing capacity synchronous testing device which comprises a supporting frame composed of two transverse rectangular plates and two longitudinal rectangular plates. A bearing supporting plate is fixedly installed on the upper surface of a longitudinal rectangular plate on one side of the supporting frame through bolts, a surrounding plate is arranged on the edge of one side of the upper surface of the bearing supporting plate, and a partition section is arranged between the bearing supporting plate and the surrounding plate. In the monitoring assembly, a photoelectric displacement sensor is installed between a sleeve and an anti-interference ring, the soil penetration depth of the concrete pile is accurately obtained by detecting the relative displacement of the sleeve and the anti-interference ring, external interference is effectively reduced through the arrangement of the anti-interference ring, the stability and accuracy of measured data are guaranteed, and a pressure sensor is matched with a stress sleeve to accurately transmit the stress of the pile body; the pressure change can be accurately sensed, the transmission structure of the worm gear and the worm is combined, the ultimate bearing capacity measurement precision is further improved, and reliable data support is provided for engineering design.

The invention provides a ball bearing clearance measuring tool for a bulb tube, a ball bearing to be measured comprises a bearing body, a bearing outer ring and a rolling body, and the measuring tool comprises a support; the bearing support is provided with a bearing containing cavity used for containing the ball bearing, and the bearing outer ring is tightly pressed in the bearing containing cavity. The limiting mechanism is used for limiting the bearing outer ring to move relative to the bearing support in the axial direction of the ball bearing; the rotating mechanism is used for driving the support to rotate and further driving the bearing support to turn over by 180 degrees in the vertical direction, so that the ball bearing is switched between a first limit position and a second limit position, and the axial direction of the ball bearing is in the vertical direction at the first limit position and the second limit position; at the first limit position and the second limit position, the measuring mechanism respectively measures a first numerical value and a second numerical value representing the relative displacement of the bearing body and the bearing outer ring, and the first numerical value and the second numerical value are used for determining the axial clearance of the ball bearing. According to the scheme, the axial clearance measurement accuracy can be improved.

The invention relates to the technical field of physical acoustics, in particular to a saturated porous medium metasurface Portrait wave frequency dispersion relation calculation method and system, and the method comprises the following steps: obtaining expressions of solid skeleton displacement, fluid relative displacement, total stress, solid shear stress and pore pressure under the action of Portrait waves; obtaining an expression of a fluid displacement component and a fluid normal stress; obtaining an expression about the relative motion of the resonator; according to all the expressions, stress and displacement continuity boundary conditions are applied to the interface of the saturated porous medium and the fluid layer, a characteristic equation of frequency dispersion characteristics is obtained and solved, and a frequency dispersion curve is obtained. According to the method, the explicit frequency dispersion relation of the saturated porous medium metasurface portrait waves is provided, the calculation efficiency and prediction precision of complex interface wave propagation are improved, the optimal design of the metasurface resonator array can be guided, and a key theoretical tool and technical support are provided for design of high-performance acoustic functional devices and structures.

The invention provides a copper foil thickness analysis method and device. The copper foil thickness analysis method comprises the steps that tension values of all layer number positions and thickness measurement results of the corresponding layer number positions in the copper foil winding process are obtained; analyzing a deformation mechanism by combining the obtained interlayer relative displacement and torsion angle according to the compression deformation analysis result to obtain stress distribution mode data; compensating thickness measurement data based on the stress distribution mode data to obtain compensated thickness measurement data; setting a normal thickness range and an anomaly judgment threshold based on the compensated thickness measurement data, and determining a sensitivity identification threshold parameter of thickness anomaly detection; judging a thickness anomaly state according to the sensitivity identification threshold parameter of the thickness anomaly detection to obtain a thickness anomaly detection result; and in combination with the thickness anomaly detection result and historical winding process thickness measurement data, thickness anomaly detection combination parameters are determined.

The invention discloses a concrete wall full-section deformation monitoring device and method, and relates to the technical field of engineering structure health monitoring, and the device comprises an integrated measurement unit, a passive stable characteristic target group and a processing unit. The integrated measuring unit is composed of an area array solid-state laser radar and a high-resolution binocular vision camera which are rigidly and fixedly connected, and is used for synchronously collecting three-dimensional point cloud and two-dimensional images of a wall and an environment. The target group is arranged on an independent stable object near the wall body; the processing unit identifies coordinates of the target group based on laser radar data, establishes a world coordinate system, calculates self pose drift of the measuring unit by periodically detecting position change of the target, and performs coordinate correction on a wall surface relative displacement field obtained by visual calculation by using the drift distance; and finally, outputting a full-section absolute deformation field under a world coordinate system. According to the invention, high-precision monitoring of full-field continuous deformation of the concrete wall is realized, and the reliability and comprehensiveness of structural health monitoring data are improved.

A three-dimensional displacement measuring system for a railway platform comprises a laser, an angle sensor, a high-magnification camera and an LED (light-emitting diode) illuminating lamp which are respectively arranged on a fixed upright post, the target is adhered to the edge of the platform to form a measurement reference surface, and the horizontal distance between the stand column and the target is a preset value; the system establishes a virtual zero point and defines a space rectangular coordinate system XYZ, the X axis is in the longitudinal direction of the platform, the Y axis is perpendicular to the edge of the platform, and the Z axis is vertically upward. The invention provides a non-contact, high-precision and low-power-consumption railway platform three-dimensional displacement measurement method, which comprises the following steps of: performing periodic laser scanning and image acquisition on a target adhered to the edge of a platform by utilizing a vision measurement system formed by double lasers and a high-magnification camera and combining feedback information of an angle sensor; and the relative displacement of the X axis, the Y axis and the Z axis in the space is inversely calculated through a geometric model. The method can automatically complete the whole-process operation of zero calibration, photographing, identification, calculation, storage and the like, and meets the actual requirements of long-term structure monitoring of the railway platform.

The invention provides a finite element simulation method and device for a strike-slip fracture stratification deformation process, and relates to the technical field of geological structure deformation simulation research, the method comprises the steps that a strike-slip fracture stratification initial geometric model is established, the strike-slip fracture stratification initial geometric model is used for reflecting actual geological conditions, and the strike-slip fracture stratification initial geometric model is used for simulating the actual geological conditions; corresponding rock stratum material attributes are given to the strike-slip fracture layering initial geometric models corresponding to different stratums; setting a rigid body shell according to corresponding binding constraints between stratums, binding the rigid body shell to the bottom of the strike-slip fracture layering initial geometric model, endowing the rigid body shell with relative displacement of a preset distance, and simulating strike-slip fracture layering deformation according to preset analysis steps by adopting displacement loading control; in the analysis step, target information is output according to a preset output information type; according to the target information, a visual simulation result is created, and the visual simulation result is used for representing the stratified deformation evolution process of strike-slip fracture.

The invention provides a railroad bridge intelligent seismic mitigation and isolation system, and relates to the technical field of railroad bridge engineering, the railroad bridge intelligent seismic mitigation and isolation system comprises a seismic mitigation support arranged on a bridge, the seismic mitigation support comprises a first seat body, a second seat body, a third seat body, a fourth seat body, a first limiting assembly and a second limiting assembly, the first seat body is slidably connected with the second seat body, and the second seat body is slidably connected with the third seat body; the fourth seat body is connected between the second seat body and the third seat body in a sliding mode, the first limiting assembly limits relative displacement of the first seat body and the second seat body, and the second limiting assembly limits relative displacement of the second seat body and the third seat body. The first limiting assembly and the second limiting assembly cut off and release the displacement constraint under different earthquake intensities, graded damping is achieved in combination with the multi-direction sliding structure, the displacement constraint can be released in a graded mode according to the earthquake intensities, and track structure safety and bridge main body structure protection are effectively balanced.

The invention belongs to the technical field of quasi-zero stiffness vibration isolators, and particularly discloses a self-adaptive adjustment quasi-zero stiffness vibration isolator and a control method. Comprising a base and a bearing plate, and a plurality of positive stiffness units are arranged between the base and the bearing plate to provide basic support; the negative stiffness unit is arranged below the bearing plate, the two ends of the negative stiffness unit are connected with the adjusting structure through the moving unit capable of moving in the length direction of the driving unit, the adjusting structure is composed of a lead screw and an adjusting motor, the projection length of the negative stiffness unit in the horizontal direction can be changed, and therefore continuous adjustment of the negative stiffness is achieved. The vibration isolator is further provided with an acceleration sensor, a relative displacement sensor and a rotary encoder, and the sensors are connected with a processing unit to form a real-time monitoring and feedback control system. The low-frequency vibration isolation device can keep stable low-frequency vibration isolation performance under the condition change, and is suitable for high-precision equipment and complex industrial vibration environments.

The invention relates to the technical field of vibration reduction and isolation devices, in particular to bridge vibration reduction equipment and a bridge vibration reduction optimization method and system. The bridge vibration reduction equipment comprises a friction pendulum support used for being installed between a main beam and a bridge pier; the damper is used for being installed between the main beam and the bridge pier; the damper is configured in the mode that when the relative displacement speed between the main beam and the bridge pier is smaller than a preset threshold value, the damper is kept in a dormant state and does not provide damping force; and when the relative displacement speed between the main beam and the bridge pier is larger than a preset threshold value, the damper enters an activated state to generate damping force between the main beam and the bridge pier until the relative displacement speed between the main beam and the bridge pier is smaller than the preset threshold value. The damper is arranged between the main beam and the bridge pier, so that damping force is generated when the bridge and the bridge pier have sudden displacement change, the stick-slip phenomenon of the bridge friction pendulum support is prevented, frequent stick-slip acceleration of support abrasion is avoided, and the service life of the friction pendulum support is prolonged.

The invention belongs to the technical field of mining monitoring, and particularly relates to a strip mine working face real-time monitoring device which comprises an inserting rod support, a transverse rotating frame, a sliding U-shaped frame, a hollow fixing plate, an inclination angle monitoring assembly, a displacement assembly and a deformation monitoring assembly. The transverse rotating frame is fixedly connected to the outer side of the dip angle monitoring assembly, the sliding U-shaped frame is slidably clamped to the outer side of the transverse rotating frame, and the deformation monitoring assembly is slidably connected to the bottom of the hollow fixing plate; the device is additionally provided with a plurality of groups of flexibly rotating inserted link brackets, and the inserted link brackets can be stably mounted in a slope area which is difficult to approach, so that the monitoring device can be widely applied to various mine slopes in complex terrains, and even if the slope deforms, the monitoring device can be kept static relative to the surface of the slope; therefore, the actual offset of the side slope is accurately measured, and the monitoring error caused by relative displacement of a traditional device is avoided.

The invention discloses a side slope three-dimensional deformation monitoring and early warning method and system based on a cascade single-line multipoint crack meter. The method and system are suitable for deformation monitoring and landslide state forecasting of a side slope area without macroscopic cracks. The method comprises the steps that a monitoring main line is planned in a potential slip area in the main slip direction, intelligent fusion nodes are arranged on the main line, multi-direction monitoring branch lines are led out, and a tree-shaped monitoring network is formed; two ends of the main line are anchored in a stable area, and tail ends of the branch lines are fixed on a slope; the node devices synchronously collect relative displacement and three-dimensional attitude data in the main line direction and the branch line direction, a three-dimensional deformation field is built in combination with an early warning model, and landslide state study and judgment and threat range prediction are achieved. The system achieves multi-point and multi-direction displacement monitoring through a tree-shaped structure, has the advantages of being wide in coverage, low in cost, flexible in arrangement and the like, and supports early-stage automatic early warning of slope disasters.

According to the linear monitoring method and system for the catwalk bearing cables, the monitoring modules arranged on the catwalk bearing cables are used for achieving synchronous acquisition of three-dimensional coordinate data and transverse distance data, vertical deformation of the bearing cables and relative displacement between the cables can be captured at the same time, and the judgment precision of the overall linear state of the catwalk is improved; the data processing module is combined with real-time analysis of a preset monitoring reference value to judge whether a linear deformation problem exists or not, and the alarm module is used for alarm output according to a judgment result, so that risks caused by manual measurement lag are effectively avoided, and it is ensured that workers can intervene in rectification at the first time. Manual inspection is replaced by intelligent monitoring, the monitoring efficiency is improved, all-weather uninterrupted monitoring guarantee is achieved, reliable technical support is provided for suspension bridge construction safety, a complete catwalk bearing cable linear monitoring process is established, and automatic real-time monitoring of linear deformation of the catwalk bearing cable is achieved.

The invention provides a loess slope deformation monitoring data processing method based on MEMS inertial sensor data and GNSS data, and relates to the technical field of slope deformation monitoring, and the method specifically comprises the following steps: calculating relative displacement and relative displacement, generating an accumulated displacement amount, and collecting rainfall characteristic parameters; iteratively optimizing the clusters and the cluster center points, confirming the number of each cluster sample, merging or splitting the clusters when a number threshold is not met until a preset threshold is met, and determining a final cluster and a cluster center point; determining a cluster to which the feature vector in the current time period belongs, and screening out similar historical time periods; and predicting the accumulated displacement in the next time period, and carrying out instability risk grade evaluation. According to the method, the clustering iteration method is adopted to continuously update the clustering and the clustering center point, the clustering structure is dynamically adjusted, the situation of excessive subdivision or excessive combination of the clustering is effectively avoided, and the loess slope instability risk level can be accurately predicted by means of the dynamic clustering optimization mechanism.

The invention discloses a parameter checking and estimating method for an anti-impact isolator with spring pre-tightening force. The method comprises the following steps: acquiring parameters of the anti-impact isolator; determining equivalent stiffness, equivalent damping and equivalent pre-tightening force based on the parameters so as to convert the anti-impact isolator model into a single-degree-of-freedom mechanical model and obtain a single-degree-of-freedom kinetic equation with pre-tightening force; obtaining a target impact spectrum, and determining the acceleration of the upper platform and the relative displacement of the upper platform and the lower platform of the anti-impact isolator under the target impact spectrum in combination with the single-degree-of-freedom kinetic equation; if the acceleration of the upper platform and the relative displacement of the upper platform and the lower platform are both smaller than the maximum acceleration index and the maximum relative displacement index, the parameters serve as dynamic simulation initial parameters, and otherwise the parameters are adjusted. By calculating the equivalent stiffness, the equivalent damping and the equivalent pre-tightening force, an anti-impact isolator model is simplified into a single-degree-of-freedom mechanical model, and rapid checking and estimation of design parameters are achieved.

The utility model discloses a clamping force variable type material carrying device which carries and conveys materials from a first position to a second position and comprises a clamping tool used for clamping the materials, the bottom of the clamping tool is fixed relative to the moving end of a conveying line, and the clamping tool comprises a first tool clamping jaw and a second tool clamping jaw which are arranged oppositely. Elastic mechanisms used for driving the clamping jaws to move relatively are arranged on the opposite sides of the first tool clamping jaw and the second tool clamping jaw, and an opening mechanism used for opening the first tool clamping jaw and the second tool clamping jaw to clamp materials is arranged at the first position. A clamping and positioning mechanism used for positioning the positions of the first tool clamping jaw and the second tool clamping jaw to keep the positions of the materials uniform is arranged at the second position; according to the utility model, the uniqueness of the position of a product is ensured by a mechanism for preventing relative displacement of materials during the movement of a conveying line and the movement of the turntable, so that the stable production of equipment is realized, and the production efficiency of the equipment and the qualification rate of the product are improved.

The invention discloses a control device for pipe-jacking tunnel pipe joint seam opening. The control device comprises a seam fixing device and a fastening adjusting device, and the seam fixing device comprises at least three annular steel plates and a plurality of positive and negative tooth two-way screw pull rods; the annular steel plates are enclosed in the pipe jacking tunnel to form annular structures matched with the inner walls of the pipe joints, the annular structures and the inner walls of the pipe joints are pulled into a whole through forward and reverse tooth bidirectional screw pull rods, and the annular steel plates are attached to the inner walls of the two sides of a joint of the adjacent pipe joints. The two ends of the positive and negative tooth two-way screw pull rod are respectively connected with the adjacent annular steel plates; the fastening adjusting device is used for adjusting the length of the positive and negative tooth two-way screw pull rod, so that the annular steel plate is tightly attached to the inner wall of the pipe joint, and therefore the relative displacement of the pipe joint at the joint is controlled. The device is simple in structural composition but remarkable in effect, is particularly suitable for complex tunnel line shapes with straight line sections and curved line sections mixed and staggered, has operability of shaping machining, and has very high application and popularization value.

The invention discloses an inter-ridge strawberry disease inspection robot structure and a control method thereof. The inter-ridge strawberry disease inspection robot structure comprises a lifting platform structure, a lateral telescopic mechanism, a camera pitching mechanism, a steering wheel moving mechanism and an independent suspension structure. The steering wheel moving mechanism is located at the bottom of the robot and makes direct contact with the ground. The independent suspension structures are installed on the two sides of the steering wheel moving mechanism and can move relative to the steering wheel moving mechanism. The lifting platform structure is located in the middle of the robot and connected with the independent suspension structure through bolts, a lateral telescopic mechanism is installed on the lower portion of the lifting platform structure, and the extension direction of a telescopic arm is perpendicular to the advancing direction of the robot. The camera pitching mechanism is installed at the tail ends of the outer sides of two telescopic arms of the lateral telescopic mechanism, and the two cameras detect the outer side of the robot. According to the invention, through real-time calculation and feedback of errors, the performance of the robot in an unstructured field environment is significantly improved.

The invention provides a flexible physical simulation method and system based on dynamic topology cutting, and the method comprises the steps: carrying out the dynamic topology mapping and aggregation processing of the geometric vertex data of a flexible body, and generating a surface particle topological structure; constructing an elastic response model based on the relative displacement between the mass points, and combining implicit Euler correction and toughness gradient extraction to generate an elastic potential energy parameter set; constructing a fracture sensitive energy field in combination with the rigid body motion trail and an energy permeation threshold value, and performing multi-domain response screening; and further carrying out region identification, structure redirection and phase reconstruction to generate a continuous deformation harmonic map, and realizing dynamic stable repair of the flexible body topology through repair domain construction and rebound fusion. Dynamic response, self-adaptive energy path identification, regional continuous deformation recovery and efficient and stable local topological repair of a flexible topological structure are realized, and physical precision and evolution robustness of flexible simulation are remarkably improved.

A linear actuator with a force sensing mechanism comprises: a housing body (10) with a mounting component (11); a transmission mechanism (20) connected to the housing body (10) and comprising a constraint component (21); an elastic body (30) arranged between the mounting component (11) and the constraint component (21); and a Hall sensor set (40) arranged between the mounting component (11) and the constraint component (21); wherein, when a force applied to the transmission mechanism (20) is changed, a relative displacement is generated between the constraint component (21) and the mounting component (11), and thus an output signal is generated by the Hall sensor set (40) due to the displacement.Accordingly, benefits are provided such as preventing equipment damage due to impacts and detecting whether a patient is in a bedridden or unconscious state at a desired time.

The invention discloses a telescope main reflection surface shape real-time evaluation and on-demand adjustment integration method. An adjustment reference attitude and a reference temperature field are used as error zero points, and the whole process is calculated based on relative quantity. A gravity deformation database, a three-dimensional Chebyshev (or Legendre) temperature basis function unit response deformation database and a temperature control actuator unit temperature change influence matrix database are established offline. Regular least square fitting is performed on temperature sensor data on line to obtain a temperature coefficient, linear combination is performed to obtain relative displacement caused by temperature, the relative displacement and relative displacement caused by gravity are superposed to form relative node coordinates, and a reference surface is fitted to output a surface shape relative RMS. And solving quadratic programming based on first-order linearization under temperature upper and lower limits and smoothness constraint to obtain an actuator temperature increment instruction, and issuing the actuator temperature increment instruction, thereby realizing closed-loop compensation without online thermal-structural coupling and absolute morphology measurement.

A valve device (30) is provided with a cylindrical passage-forming member (40) and a cylindrical spool valve (60) that is slidable with respect to the passage-forming member (40). The passage-forming member (40) has a communication port (56) that communicates the inside and the outside in the radial direction. The slide valve (60) has at least one cut portion (62, 63) cut from one end surface (61) in the axial direction (Rs). The degree of communication of the cutout portions (62, 63) with respect to the communication port (56) can be adjusted by relative displacement of the spool valve (60) with respect to the passage forming member (40).

The invention discloses a method for calculating structural strain distribution by using a laser radar and a deep learning neural network, and belongs to the technical field of structural health monitoring, experimental mechanics and non-contact measurement. According to the method, initial and different-state three-dimensional point clouds of a structure are obtained through a laser radar, and a relative displacement field is obtained through preprocessing; a deep learning neural network model comprising an embedded module, a Transform module, a down-sampling module, an up-sampling module and a full connection layer is constructed, and a data training model is obtained by using a digital image correlation technology; and finally, inputting the preprocessed laser radar point cloud data into the trained model, and outputting full-field strain distribution. According to the invention, advantages of laser radar and deep learning are combined, point cloud sparsity and noise influence are overcome, high-efficiency and high-precision full-field strain measurement is realized, and the method is suitable for large-scale or complex structure monitoring.

The invention provides a nonlinear dynamic modeling, solving and control method of a linear motor, and belongs to the field of structural dynamics, and the method comprises the steps: 1) simplifying an LRA into a two-degree-of-freedom mass-spring-damping nonlinear system, and obtaining the linear stiffness and cubic nonlinear stiffness of a beam spring; (2) nBgleff discrete data points of different relative displacements of the motor vibrator and the shell are obtained through simulation, an nBgleff fitting curve is obtained, and then electromagnetic force is obtained; 3) identifying system damping parameters by combining measured data; according to the method, the goodness of fit Rnl of the model to the LRA vibration response is larger than 0.95, vibration characteristics can be accurately predicted, the LRA vibration consistency is effectively improved through the control strategy, and the tactile feedback experience is improved.

The invention discloses a semi-dense sub-pixel displacement measurement method based on LoFTR, and the method comprises the steps: carrying out the front shooting of a target structure through an improved camera, obtaining a corresponding image, and carrying out the preprocessing of the image, and obtaining a matching pair; processing the matching pairs by using an LoFTR matching framework, and establishing a semi-dense key point matching relationship between frame pairs to obtain a feature point matching set; and based on the feature point matching set, determining the sub-pixel-level relative displacement of the target structure by using an RANSAC algorithm and a linear interpolation method, and completing the measurement of the sub-pixel displacement. According to the invention, high-precision semi-dense sub-pixel displacement measurement can be realized on surfaces with abundant textures and surfaces without textures.

The application relates to a mechanical temperature self-adaptive pier beam longitudinal constraint structure, which comprises a pier, a main beam arranged above the pier, an auxiliary beam installed on the top of the pier, the auxiliary beam being capable of being elongated or shortened under the action of system temperature and being located between the pier and the main beam, a displacement lever, one end of the displacement lever being hinged to the auxiliary beam through a first rotating shaft, the other end of the displacement lever being hinged to the main beam through a second rotating shaft, and the part of the displacement lever between the first rotating shaft and the second rotating shaft being hinged to the pier through a third rotating shaft. Under the action of system temperature, the main beam and the auxiliary beam are respectively elongated or shortened, and the displacement lever only rotates synchronously, so that the temperature internal force of the main beam and the pier frame structure is released. Under the action of other loads, the main beam and the pier are connected through the auxiliary beam and the displacement lever, and when the main beam needs to be relatively displaced, the auxiliary beam and the displacement lever can constrain the horizontal deformation of the main beam and the pier, so that the main beam and the pier form a frame structure to jointly bear loads.

The application belongs to the technical field of building structure damage identification, and particularly relates to a model-free detection method for lateral stiffness mutation position of a high-rise structure, comprising the following steps: step one, obtaining the displacement time history response of the same height interval measuring points in the same vertical line of the high-rise structure in the same horizontal direction; step two, calculating the second-order statistical moment of the relative displacement of each measuring point according to the time history response, and solving the lower-to-upper value corresponding to the statistical moment of the measuring point; step three, taking the height of each measuring point as the horizontal coordinate and the lower-to-upper value corresponding to the statistical moment of the measuring point as the vertical coordinate to draw a curve; and step four, observing the mutation of the curve to identify the lateral stiffness mutation position.

A multi-parameter sensing and bearing integrated structural plate for space is characterized by comprising a front panel, an inner plate, an outer frame, a distributed optical fiber sensor, a vibration sensor, a multi-core photoelectric connector and a pressure sensor. The inner plate is embedded in the outer frame, and the four corners of the inner plate are each provided with a pressure sensor. A plurality of honeycomb grooves are formed in the upper end surface of the inner plate; vibration sensors are fixed in part of the honeycomb grooves; a multi-core photoelectric connector is fixed at one angular position of the inner plate; each vibration sensor is connected with the multi-core photoelectric connector; the front panel covers the inner plate, and a distributed optical fiber sensor is fixed on the lower end face of the front panel. According to the structural plate, various sensors are mounted in the structural plate in a nesting and stacking manner, so that the structural plate can measure various parameters; and meanwhile, the structural plate directly transmits the pressure to the mounting main body through the outer frame, so that a stroke gap is eliminated, and the pressure sensor does not need to generate relative displacement and directly measures the external absolute pressure amount.

The invention discloses a testing device and a testing method for a cut-off end of a stringer of a wallboard structure of a high-load aircraft. The testing device and the testing method are suitable for testing the mechanical property of a wallboard test piece comprising a skin and at least one stringer cut-off end. According to the device, lateral supporting assemblies are arranged on the two sides of a test piece, lateral constraint is provided for the wallboard test piece, axial relative displacement is allowed, and the single stringer wallboard test piece is used for equivalently simulating simple support boundary conditions on the two sides of an actual stiffened wallboard; the lateral supporting assembly comprises an L-shaped base, a connecting flat plate and a sliding supporting piece, the L-shaped base is connected with the testing machine through bolts, and the sliding supporting piece abuts against the side edge of the wallboard testing piece to form lateral supporting; according to the optimal position of the sliding supporting piece, a single stringer wall plate test piece obtains the maximum bearing capacity and the damage form which are consistent with those of a plurality of stringer wall plate test pieces under the action of a tensile load in a lateral supporting mode.