42 results about "Force displacement" patented technology

The invention discloses a control method and system of a servo press, and relates to the field of press control, a force displacement curve is obtained in real time from a current punching period, a key feature vector of the force displacement curve is extracted, the key feature vector is compared with an ideal golden feature vector, and a multi-dimensional deviation vector is obtained. Particularly, a deviation decoupling method based on morphological analysis is introduced, and the total deviation can be accurately decomposed into a thermal drift compensation amount caused by the thermal effect of equipment and a material characteristic compensation coefficient caused by plate performance fluctuation by analyzing translation and zooming differences of a current curve and a gold curve in form. Therefore, independent and accurate compensation can be carried out for a physical source, the problems of information aliasing and compensation failure caused by the fact that disturbance sources cannot be distinguished in the prior art are effectively solved, intelligent and feed-forward type cooperative compensation for the next stamping period is achieved, and long-term stability and high precision of the production process are ensured.

The invention belongs to the technical field of bridge construction, and particularly relates to a single-point multiple-jack synchronous beam falling forced displacement method prestress applying method which comprises the steps that S1, a plurality of temporary supporting points are arranged beside a permanent support, and a self-locking type beam bearing mechanism is installed on each temporary supporting point; meanwhile, a hydraulic jack is arranged at each temporary supporting point, the multiple hydraulic jacks are connected to a PLC integrated hydraulic synchronous control system through hydraulic pipelines, and synchronous linkage mechanisms are arranged among the multiple hydraulic jacks. According to the single-point multiple-jack synchronous beam falling forced displacement method prestress applying method, when an inner jacking pipe sleeve pushes a supporting cushion block to ascend and descend, through meshing of a self-locking gear and two self-locking racks, a secondary telescopic block can be forcibly driven to move synchronously, so that continuous stretching and retracting of a bearing beam are achieved, the cushion block does not need to be manually replaced after single beam falling, and the working efficiency is improved. The system automatically adjusts the height to meet the multi-stroke circulating beam falling requirement, and the construction efficiency is improved.

The invention discloses a side face direct-insertion wiring terminal block structure and an elastic piece simulation design method of the side face direct-insertion wiring terminal block structure. Comprising an insulating shell, a conducting strip, a first elastic piece, a second elastic piece and a push block abutting against the elastic pieces, a wire can be inserted along the side face and clamped by a wire clamping block, and electricity conduction and disengagement prevention are achieved; the elastic piece is made of a metal material with resilience, and the elastic piece is bent to form a mounting part and a camber beam structure so as to provide stable clamping force. In order to optimize the performance of the elastic sheet, a simulation design method is adopted to establish an elastic sheet finite element model, set material attributes and constraint and loading conditions, carry out mesh refinement on a bending area and a wire clamping opening, start large deformation analysis and draw a force-displacement curve, so that the equivalent stiffness, the maximum stress and the deformation of the elastic sheet are obtained. Through simulation comparison of different design schemes, the optimal structure meeting the strength and resilience requirements can be determined. According to the invention, the stable conduction of the side plugging terminal and the predictable design of the performance of the elastic sheet are realized, and the assembly reliability and the design efficiency are improved.

The invention discloses an in-situ force-displacement measuring device and method for a soft material, and belongs to the technical field of material mechanical property testing. The device comprises a base, three spherical supports symmetrically arranged on the base, a carrying disc carried on the spherical supports, and a weight set for applying a vertical load to the carrying disc. The top of the spherical support is coated with dye, and transfer paper is laid on the surface of the tested soft material; under the action of load, the ball body is pressed into the soft material to generate indentations, and the dye is transferred to the paper to form a dyeing area; the area or the equivalent diameter of a dyeing area is obtained through an image acquisition system, and a mapping relation between the area or the equivalent diameter and actual displacement is established in combination with a calibration curve, so that force-displacement response is indirectly obtained. The image processing comprises the sub-steps of preprocessing, binaryzation, morphological operation, connected domain analysis and the like. The calibration curve is established through fitting (u = a.Ab) of a displacement sensor and a power function. The device is simple in structure, low in cost and suitable for rapid and in-situ mechanical property screening and comparison testing of materials such as soft cushions and foam.

The application discloses an intelligent lighter plugboard device based on visual identification, aiming at overcoming the space interference of horizontal displacement and longitudinal conveying in the same plane in the plugboard operation, and the complicated linkage arrangement and collision risk caused by the independent external driving avoidance of the blocking material during the multi-layer switching. The device comprises a main frame and a conveyor, the side of the conveyor is provided with a forced elastic ejection channel with a block and a spring, and the physical blockage of the side of the channel is removed by the single one-way extrusion mechanical removal when the defective products are horizontally pushed. The push station is provided with a self-adaptive avoidance assembly, the contact arc convexity of the pushed material drives the horizontal sliding of the baffle, removes the physical support below the sliding block, and completes the mechanical transmission from the horizontal pushing force to the vertical retreat stroke. After the full disc, the connecting plate with a chute is transversely moved, and the slope surface forcibly lifts the reset full-column blocking material component. The device relies on a single-point forced displacement structure and a three-axis orthogonal sliding table frame to sort out the space avoidance action sequence in the multi-layer alternating operation.

Device and method for determining a property, in particular a viscosity or compressibility, of a fluid, in particular a functional fluid, of a component (102), in particular a viscosity or compressibility, wherein measurement data characterizing an operating characteristic of the component (102), in particular a power and / or a rotational speed of a pump with which the fluid is pumped, and / or a displacement of a hydraulic cylinder driven by the fluid, are acquired (206), wherein, depending on the acquired measurement data, a characteristic parameter for the function of the component (102), in particular a power signal and / or a force-displacement characteristic curve, is determined (208), wherein the property is determined depending on a result of a comparison between the determined characteristic parameter and a predetermined characteristic parameter for the function of the component (102).in particular a given power signal and / or a given force-displacement characteristic, is determined (210).

The invention discloses a flexible supporting device for a GIL product, and the device comprises supporting cantilevers, the supporting cantilevers are grouped in pairs and are arranged at intervals, and a to-be-connected GIL product is arranged between the supporting cantilevers in a penetrating manner; the two combined dampers are fixedly arranged on the top sides of the supporting cantilevers in a one-to-one correspondence mode. The transition force transmission supporting piece is used for connecting the GIL product and the combined damper, and based on the combined damper, instantaneous energy caused by the vertical earthquake vibration acceleration to the GIL product can be absorbed, and forced displacement introduced by the vertical earthquake vibration acceleration to the GIL product is reduced. The force balance buffering assembly is arranged between the cantilever ends of the two sets of supporting cantilevers and conducts horizontal buffering control on the supporting cantilevers, and the force balance buffering assembly can absorb instantaneous energy caused by horizontal seismic vibration acceleration to the GIL product and reduce forced displacement introduced by transverse seismic vibration acceleration to the GIL product. The GIL connector is suitable for connection of GIL products in a complex environment, and the connection reliability is high.

The invention discloses an in-service ductile bridge anti-beam-falling function improving method and an in-service ductile bridge anti-beam-falling device, relates to the technical field of in-service highway bridge anti-seismic property reinforcement and transformation, and provides a method for solving the problems that in-service ductile bridge anti-beam-falling device type selection and parameter determination depend on experience, a system method is lacked, and multi-level performance controllability is difficult to achieve. Comprising the steps of anti-seismic performance evaluation, multi-level fortification standard setting, problem judgment, device model selection and parameter calculation optimization, and by establishing a parallel constraint system of a support and an anti-falling beam device and a series model of the support and a pier, the lateral stiffness requirement is deduced based on force-displacement coordination; the lateral stiffness of the anti-falling beam device is calculated according to E1, moderate earthquake and E2 levels in a grading mode, the maximum value is taken, parameters are iteratively optimized through nonlinear time-history analysis, it is ensured that the damage control target is met, and the method is used for improving the anti-seismic performance of a bridge and preventing support sliding, main beam deviation displacement and falling beam earthquake damage.

This invention discloses a sliding hinge support and construction method for a prefabricated staircase, relating to the field of prefabricated building construction technology. It involves setting up multiple guide components, multiple infill bodies, a sliding mechanism, and a shock-absorbing mechanism, so that the upper and lower ends of the prefabricated staircase are both supported on an external load-bearing beam. The guide components pass through sliding holes and extend into the infill space, and the top of the guide components is fixed to the prefabricated staircase by the infill bodies. The prefabricated staircase is not rigidly welded or bolted to the load-bearing beam, but rather a sliding surface composed of sliding components is provided. The prefabricated staircase can then slide horizontally with a low coefficient of friction relative to the infill components (i.e., relative to the external load-bearing beam) through the sliding medium layer in the sliding components. This relative sliding displacement releases the deformation constraints at the connection nodes, avoiding stress concentration at the nodes caused by forced displacement. The sliding stroke provided by the sliding components effectively absorbs inter-story displacement, protecting the main structure of the prefabricated staircase and the connection nodes from damage.

The invention relates to the technical field of automatic simulation, and discloses a two-force rod buckling automatic simulation method, device and equipment and a medium, and the method comprises the steps: numbering nodes in a two-force rod model, and obtaining rigid node numbers of numbered rigid connection units; determining an active point in the rigid connection unit according to the rigid node number, and determining a constraint end and a loading end based on the global coordinate value of the active point; the constraint end number of the constraint end and the loading end number of the loading end are associated with a local coordinate system number of a preset local coordinate system, constraint conditions are applied to the constraint end, forced displacement is applied to the loading end, and simulation solving is carried out; and according to a simulation result after simulation solution, determining a buckling value and a corresponding displacement value, and obtaining a bearing reaction-displacement curve of a marked buckling point so as to automatically identify a critical point of buckling occurrence. According to the technical scheme, the working efficiency and precision of two-force rod buckling simulation can be improved, and human errors are reduced.

The invention discloses a multidirectional self-adaptive precise clamping control system and a using method thereof. Relates to the technical field of dense manufacturing workpiece clamping control and comprises a workbench provided with a first multi-shaft synchronous driving module, a first strip-shaped hole is formed in the top of the workbench, a first fixing sleeve is arranged in the first strip-shaped hole, an extrusion block is arranged on the first fixing sleeve, and first clamping plates are arranged on the opposite side walls of the extrusion block; the first fixing sleeves are arranged on the force displacement coupling controller in a sleeving mode, the force displacement coupling controller is connected with the first multi-shaft synchronous driving module, sleeves are arranged on the two sides of the extrusion block, telescopic plates are arranged in the sleeves in a sleeving mode, screw rods are arranged on the telescopic plates, knobs are arranged at the ends, close to the extrusion block, of the screw rods, and bearing seats are arranged at the other ends of the screw rods. A second clamping plate is arranged on the bearing seat; the lateral clamping mechanism is arranged on the sides, away from each other, of the extrusion blocks. According to the multi-directional self-adaptive precise clamping control system and the using method thereof, multi-directional surrounding clamping is achieved, and the problem of uneven stress is solved.

The present application relates to the technical field of bridge engineering, and provides a load-deformation determination method and system for a precast pier under compression-bending-shear-torsion action, which comprises determination of stage division and analysis assumption of a torsion moment-angle analysis model and a shear force-displacement analysis model of the precast pier under compression-bending-shear-torsion action; based on concrete mechanics parameters, a spatial truss model, the principle of virtual work and force balance, critical point calculation formulas of each stage of the two models are respectively established, and each model is simplified into a complete curve of the critical point connecting line; precast piers with different parameters are selected, the load-deformation analysis model is used to calculate the torsion moment-angle curve and the force-displacement curve, and comparison and verification are made with the test curve. The present application comprehensively considers the stiffness attenuation, crack development and deformation formation of each stress stage of the precast pier, can accurately reflect the dynamic relationship between the load and the deformation, and realizes accurate prediction of the change rule of the lateral force and the torsion moment of the precast pier with the loading displacement and the angle under compression-bending-shear-torsion load.

The invention discloses a spectrum load impact fatigue test device and a control method, the spectrum load impact fatigue test device comprises a tested structure, a driving unit, an impact head and a detection and control system, an industrial personal computer of the detection and control system is in communication connection with a PID controller, the PID controller is electrically connected with an electro-hydraulic servo valve, a force sensor and a displacement sensor, and the electro-hydraulic servo valve, the force sensor and the displacement sensor are electrically connected with the detection and control system. The electro-hydraulic servo valve is connected into an oil path of the hydraulic actuator; and a displacement sensor and a force sensor are mounted at the end part of the actuator rod. Through two modes of displacement control and force displacement fusion, different fatigue working conditions are flexibly adapted, especially load deviation caused by stiffness attenuation of the elastic assembly is adaptively compensated, and closed-loop feedback control ensures accuracy and repeatability of test data, so that engineering credibility of fatigue strength evaluation of the elastic assembly is improved; and the high-frequency large-stroke mechanical shock of the crank connecting rod mechanism is combined with the dynamic compensation of the hydraulic servo system, so that the time history waveform of the random continuous spectrum load can be automatically and accurately reproduced in real time.

The invention belongs to the technical field of pipeline structure strength analysis and plastic energy absorption structure design, and particularly relates to a method for correcting plastic damage deformation of a pipeline. The invention provides a method for correcting plastic damage deformation of a pipeline, which comprises the following steps of: further dividing a partial region into a rigid section and a residual plastic region, and continuously correcting the size of the rigid section through comparison before and after curvature to obtain a force-displacement response curve; and finally, through a finite element verification method combining a J2 plastic deformation full-amount constitutive model considering a large deformation effect and a rigid region judgment step under a one-time unloading hypothesis, and a compilation method of a corresponding Abaqus user-defined subprogram UMAT, accurate calculation of a crushing global force-displacement response curve of the cross section of the pipeline on an upper flat plate and a lower flat plate can be realized, and the accuracy of the pipeline cross section is improved. And safety evaluation and damage evaluation of the pipeline structure are realized.

This invention discloses a separate variable-frequency, variable-friction-coefficient friction pendulum support and a method for achieving diverse hysteresis characteristics. The friction pendulum support includes a lower structure and an upper structure. A circular spherical slide and an annular curved slide are fixedly mounted on the lower support plate of the lower structure, and the circular spherical slide and the annular curved slide are concentric. A central support leg is located at the center of the lower side of the upper support plate of the upper structure, and a slightly movable hinged slider is embedded at the bottom of the central support leg. An outer hollow conical support platform, concentric with the central support leg, is also fixed to the lower side of the upper support plate. A segmented slider connected in series with steel rings is embedded at the bottom of the hollow conical support platform. The segmented slider can rotate slightly on the steel rings to adaptively conform to the sliding surface of the slide. This invention allows for flexible design of the sliding frequency and friction force of the friction pendulum support; it can meet the wind and seismic resistance design requirements under different levels; and by adjusting the radius of the sliding surface and the friction coefficient, diverse hysteresis characteristics can be achieved in the force-displacement relationship curve.

The invention provides a method for constructing a static model of a lathe tailstock based on a slip working condition. The method comprises the steps that the maximum axial friction force of a sleeve under the action of a clamping mechanism is calculated; whether the external load borne by the tip component is larger than the maximum axial static friction force or not is judged; under the condition that the external load is large, a statics model of the lathe tailstock is established; the model at least comprises force-displacement functions of a sleeve-tip joint surface, a tailstock body-lathe bed guide rail joint surface, a lead screw shaft-nut pair joint surface, a thrust bearing and a lead screw shaft; all parts in the tailstock only generate elastic deformation, and the load is sequentially transmitted along the external load, the center, the center-sleeve junction surface, the sleeve, the lead screw shaft-nut pair junction surface, the lead screw shaft, the thrust bearing, the tailstock body, the tailstock body-lathe bed guide rail junction surface and the lathe bed. According to the method, the exclusive statics model containing the full-load transmission path is established for the slippage working condition, mechanical response changes caused by slippage are accurately quantified, and the defect that a traditional model path is incomplete is overcome.

Operating device for a motor vehicle, comprising a carrier (21), an operating element (22) which is displaceable on the carrier (21) in an actuation direction (B) from a rest position to an actuation position, and a magnetic operating haptic device (28) which is operatively connected to the operating element (22) such that, in the event of a displacement of the operating element (22) between the rest position and the actuation position caused by a load on the operating element (22) by a person, a counterforce acts in accordance with a predefined force-displacement characteristic, wherein the operating haptic device (28) comprises a first magnetic unit (30) and a second magnetic unit (40), wherein the first magnetic unit (30) is configured to load the operating element (22) against the actuation direction (B), and the second magnetic unit (40) is configured to load the operating element (22) in the actuation direction (B).

The present invention provides an apparatus and method capable of analyzing the influence of stress, which is a factor in the occurrence of springback, in a short time and with high accuracy. [Solution] A stress influence analysis device 10 comprises an acquisition unit 11 that acquires information on the shape, characteristics, and stress of a press-formed part after press forming and before springback (SB) occurs, information on the shape and characteristics of a press-formed part after SB occurs, and information on the stress of an analysis model after a forced displacement is applied to an analysis model generated based on the information on the shape and characteristics before or after SB occurs; and a calculation unit 12 that calculates the degree of influence of the stress in the press-formed part before SB occurs on SB based on the information on the stress of the press-formed part before SB occurs and the information on the stress of the analysis model after a forced displacement is applied, wherein the forced displacement is set based on the information on the shape of the press-formed part before and after SB occurs.

The invention discloses a rivet pressing deviation early warning method for crimping force displacement curve form discrimination, and relates to the field of industrial manufacturing process monitoring, and the method comprises the steps: collecting crimping force and displacement signals in real time to generate a crimping force-displacement time sequence curve, and extracting geometric form features and dynamic response features; constructing an independent time sequence for each feature based on feature data extracted by continuous preset times of crimping operation, and establishing a statistical process control reference for each feature sequence; monitoring the movement statistics of each feature sequence in real time, and when the movement statistics of any feature sequence meets a preset statistical trend anomaly judgment criterion, judging that the feature sequence has potential trend anomaly; and performing association analysis according to the feature sequence with the potential trend abnormality and the trend state of each feature sequence, and determining a fault mode according to a preset fault mode mapping rule. And through feature extraction and trend analysis, early and accurate early warning and root diagnosis of the voltage bias risk are realized.

The invention provides a press segmented closed track generation method based on consistency safety Bayesian optimization, and the method comprises the steps: extracting a compaction response and infiltration capacity parameter range under the upper limit constraint of a press through a force-displacement curve and an in-mold pressure signal which are obtained through one-time pressure test; establishing an extrusion flow and gas discharge combined calculation model under mould geometry and cavity boundary conditions, and determining displacement points when the edge sealing starts and finishes displacement and the central pressure reaches a drop threshold value; introducing the physical constraints into a scoring network, determining the speed and the residence time of each section in a trajectory parameter range by adopting secure Bayesian optimization, generating a target section closed trajectory which meets the condition that the central pressure is reduced to a threshold value before edge sealing and does not trigger the upper limit of equipment, and outputting a corresponding control instruction; according to the method, under the condition of considering material and working condition fluctuation, the exhaust reliability and the forming quality in the pressing forming process are improved, and takt time and equipment safety are both considered.

The invention relates to the technical field of geological stability evaluation, in particular to an engineering rock mass stability dynamic evaluation method based on critical dynamic stiffness, which comprises the following steps: determining an evaluation area; dividing the evaluation area into a plurality of friction control units, and performing sample collection on each friction control unit; obtaining a shear force displacement curve and sliding speed data of each sample; determining the critical dynamic stiffness of each sample; determining the conservative critical dynamic stiffness of each friction control unit; determining the field equivalent shear stiffness of each friction control unit; according to the difference distribution of the conservative critical dynamic stiffness and the field equivalent shear stiffness of each friction control unit, generating an evaluation result of the stability of the engineering rock mass; according to the method, stability judgment can be directly carried out on the basis of measurable stiffness under different geological conditions, the subjectivity of dependence on experience safety coefficients in traditional evaluation is avoided, and the physical rationality and repeatability of evaluation results are improved.

The invention discloses a bridge jacking force-displacement dynamic prediction and counterweight optimization method based on CNN-LSTM and edge calculation, and belongs to the field of intelligent bridge engineering monitoring and structure control, and the method comprises the steps: S1, integrating multi-dimensional sensing data, constructing a space-time incidence matrix, extracting force-displacement characteristics such as curvature, gradient change rate, hysteresis effect parameters, and the like, and carrying out the optimization of the force-displacement characteristics; multi-scale convolution sampling is carried out to capture abrupt change and stationary features; s2, constructing a CNN-LSTM hybrid model, extracting local features by CNN, capturing time sequence dependence by LSTM, introducing a moment balance constraint Fc * R = Mz + Mun into a loss function, outputting a prediction confidence interval through Dropout, and fusing multi-branch features to form a final feature vector; s3, deploying an edge-cloud cooperative system, realizing real-time reasoning and counterweight optimization by an edge end, and executing incremental training by a cloud end to update a model weight; and S4, calculating the balance weight adjustment amount according to the predicted critical jacking force, and realizing closed-loop control of hoisting operation by linkage with BIM visualization. The method has the beneficial effects that the construction safety and the real-time decision-making efficiency are remarkably improved.

The invention provides a connecting device for installation of a large-span assembly type outer wall, and belongs to the technical field of connecting pieces of building structures. The connecting device comprises a bearing mechanism which comprises a cross rod and an adjusting channel formed in the top of the cross rod. Through a composite elastic reset assembly in the multi-directional fixing mechanism and a graded deformation mechanism of an energy storage spring and a ring sleeve, the structural rigidity is maintained, vertical displacement can be flexibly digested, a modular vibration reduction structure of a damping assembly implements stepped energy dissipation for vibration of different frequencies, the alternating load influence is reduced, and the vibration attenuation effect is improved. By means of the hinged design of the rotating shaft seats and the multi-degree-of-freedom characteristic of the adjusting supporting assemblies, the dynamic following capacity is given to the external wall panel, stress concentration caused by forced displacement is avoided, through the scientific proportion of rigidity and flexibility, the functions of deformation coordination, vibration isolation and uniform stress distribution are achieved while the bearing capacity is guaranteed, and the service life of the external wall panel is prolonged. And the failure risk of traditional rigid connection is fundamentally overcome.

The invention discloses a foundation pit hydraulic steel support convergence displacement monitoring and high-precision data rapid processing method. The method comprises the following steps that a convergence displacement superposition model of a hydraulic steel support system composed of a steel support and a hydraulic jack under the thermal-mechanical coupling effect is established; building a monitoring system and arranging measuring points on the basis of a convergence displacement superposition model; steel support thermoelastic displacement UT and steel support stress displacement Us are obtained, and relative convergence displacement UP of the two ends of the hydraulic steel support system is obtained through calculation in combination with hydraulic jack displacement UJ; performing dynamic segmentation processing on the long-time sequence monitoring data by adopting an equal-interval moving time interval method; and performing high-precision fitting on the monitoring data subjected to segmentation processing by adopting an interpolation method, and establishing a continuous time-varying function of the displacement data. The method has the advantage of being suitable for intelligent control over construction displacement and engineering risks of the deep foundation pit in the soft soil stratum.

A kind of deformation detection method of flexible constant force clamping mechanism under displacement input, after the two-dimensional grid model of the flexible constant force clamping mechanism to be measured is constructed, based on the Mooney-Rivlin second-order strain energy function model of super-elastic material and initialization model parameters are generated according to boundary constraint condition and load setting;Based on the virtual work principle discretization equation under the static equilibrium state of continuum, using the displacement control method based on displacement increment iteration, the action point of load application, i.e. control point is handled by displacement application and the displacement increment of corresponding non-constrained point is solved, then the node position coordinates and model coefficients are updated until the convergence criterion is met;Finally, the node deformation solution meeting the equilibrium equation is obtained, and the node displacement, internal stress and other data of the process are processed and charted.The present application can quickly and conveniently model similar examples with simple parameter setting, and obtain the structure deformation condition and force-displacement output characteristic results with high precision.

This invention proposes a hoisting structure, hoisting method, and tunneling machine hoisting and receiving method, relating to the field of hoisting machinery technology. The hoisting structure includes a hook, a force adjuster, and a hoisting rope. The force adjuster has at least one fixed beam, with guide devices at both ends of the fixed beam. Each guide device includes pulleys, force sensors, and a displacement assembly. The force sensors are mounted on the pulleys, which reciprocate along the length of the fixed beam under the drive of the displacement assembly. The hoisting rope is hooked in the middle, and both ends of the rope pass through the pulleys at both ends of the fixed beam and are connected to the load to be hoisted. The force sensors measure the force on the pulleys in real time, and the displacement assembly adjusts the position of the pulleys in real time based on the force sensor's measurement data. This invention can effectively improve and adjust the force distribution on the hoisting rope in real time, enabling the hoisting of large-volume tunneling machines within a limited space.

The invention discloses a gate opening degree control system and method based on a force-displacement time error algorithm, and relates to the technical field of gate control, and the system comprises the following modules: an actual comparison module used for collecting performance parameters of a structure, a transmission mechanism and a motor of a gate, and obtaining actually measured operation time; the core algorithm building module is used for building a function that the driving force changes along with the opening degree on the basis of a mechanics and kinematics relation, and building a theoretical time-opening degree digital model; the theoretical calculation module forms a to-be-calibrated fixed parameter combination and outputs theoretical operation time under different working conditions; the model correction module optimizes fixed parameters in the theoretical model so as to minimize errors between the theory and actual measurement and lock an optimal parameter combination; and the algorithm operation module inputs the target opening degree into the final control model, the gate operation time is calculated, gate positioning control is achieved, and the system can improve the accuracy and reliability of gate control.

The application relates to the technical field of hardness testing, and particularly discloses a hardness testing device for a racket pole of a badminton racket, which comprises a support table, a vertical plate, a detection unit, a loading mechanism and a clamping mechanism. The vertical plate is fixed to one side of the support table and inlaid with the detection unit, the top of the vertical plate is locked with the loading mechanism, and the clamping mechanism is installed on the other side of the support table. The loading mechanism converts the rotary motion into stable and vertical linear loading motion of the pressure head through a transmission system composed of a motor, a cam piece, an L-shaped pressure rod, a connecting rod and a precision guide pair; the clamping mechanism drives the symmetrically arranged connecting rod amplification mechanism through a cylinder to make the upper and lower pressing frames move synchronously and firmly clamp the racket handle. The displacement and force sensing module integrated with the detection unit collects data in real time, an internal data processing module automatically draws a force-displacement curve and calculates the hardness value or the elastic modulus. The application realizes high precision and high efficiency of the hardness testing of the racket pole, and has the advantages of strong universality, convenient operation and objective and reliable results.