1741 results about "Tension control" patented technology

The invention provides a pipeline optical cable laying state monitoring method and system based on artificial intelligence, and the method comprises the steps: obtaining an optical cable vibration signal, and generating a vibration feature data set based on the optical cable vibration signal; constructing a mechanical equilibrium equation based on the vibration characteristics of the vibration characteristic data set, and calculating the stress states of the optical cable in different pipeline environments; obtaining the current laying tension, generating a control strategy, and adjusting the laying tension to obtain an updated tension value; constructing an anomaly detection model of the spatial-temporal characteristics to generate an anomaly score, and identifying whether the optical cable is abnormal or not in real time; and generating an updated laying strategy and a construction quality report based on the corrected tension control signal. The problems of abnormal stress, monitoring lag, lack of intelligent optimization and the like in the prior art can be effectively solved, and the safety, stability and construction efficiency of optical cable laying are improved.

The invention discloses a scraper chain tension detection device for a mining scraper conveyor and a tension control method. The scraper chain tension detection device comprises a connecting seat, a pressure detection assembly and a data processor, the connecting base is fixed to a U-shaped groove in the middle section of the machine tail side plate. The pressure detection assembly comprises a base, a floating block, a pressure sensor and a gland; the base is installed on the connecting base, one end of the gland is installed on the base, the other end of the gland extends towards one side of the scraper chain, so that the gland and the upper edge of the machine tail form a channel for the axe end of the scraper to run, the pressure sensor is installed on the lower end face of the gland, and the floating block is installed on the side, facing the scraper chain, of the base in a sliding mode. The floating block is located under the pressure sensor. And the data processor establishes communication connection with the pressure sensor. The positive pressure of the axe end of the scraper on the upper edge is detected through the pressure detection assembly installed on the upper edge of the machine tail, and then the tension condition of the scraper chain is judged by detecting the tension of the scraper chain on the upper portion of the machine tail and serves as the basis for adjusting the tension of the scraper chain.

The invention discloses a multi-mode intelligent tension self-adaptive control method, and belongs to the technical field of tension control of wire rod processing devices. According to the method, an LSTM-Transform hybrid model is utilized to realize the collaborative optimization control of tension prediction, the rotating speed and the pitch; by means of an edge computing architecture and a Modbus-TCP real-time communication protocol, a data processing and control instruction generation period is compressed to be within 50ms, and the dynamic response capability of a system is improved; and meanwhile, a graded safety protection mechanism is designed, a robust control mode is switched to at a millisecond level when vibration energy exceeds a limit or the temperature is abnormal, and the MES system is linked to push a fault code, so that the control precision is remarkably improved, the material loss rate and the operation and maintenance complexity are reduced, and a high-reliability and self-adaptive intelligent solution is provided for high-speed wire rod processing equipment.

The invention provides an aluminum material shearing machine pressure self-adjusting feeding system based on synchronous rollers, relates to the technical field of aluminum material shearing machines, and adopts three synchronous rollers to be mounted in a mounting groove in the surface of a turntable through a movable block, a pneumatic telescopic rod and a pressure sensor in a combined manner to form multi-point support and tension control on an aluminum material. The console collects an extrusion force signal output by the pressure sensor in real time, calculates an actual pressure value in the horizontal direction through a pressure decomposition algorithm in combination with a turntable angle output by the angle sensor, compares the actual pressure value with a preset tension threshold value to generate an error signal, and drives the pneumatic telescopic rod to dynamically adjust the position of the synchronous roller; and when the error exceeds a set range, the servo motor can be controlled to adjust the angle of the turntable, and the wrapping angle of the synchronous roller is changed to realize tension compensation. The conveying tension of the aluminum material under the complex working condition is kept stable, the conditions of loosening, wrinkling, deviation and too tight snapping are avoided, and therefore the stability of the aluminum material in the conveying process and the follow-up shearing precision are improved.

The invention provides a model predictive control-based steel plate tension dynamic optimization method and system. The method comprises the following steps of: obtaining material characteristic parameters of a high-strength steel plate; according to the material characteristic parameters, predicting the tension change of the high-strength steel plate and defining a voltage regulation parameter range of an electric control valve by utilizing model prediction control so as to generate a voltage regulation instruction matched with the material characteristic parameters; according to the rotating speed adjusting requirement and the real-time load state of the driving motor, an optimized pulse sequence is generated through the pulse modulation technology; determining a duty ratio adjustment direction and a duty ratio adjustment proportion according to the voltage adjustment instruction so as to obtain a pulse sequence after duty ratio adjustment; and by means of the voltage adjusting instruction, the trigger phase of the pulse sequence with the duty ratio adjusted is corrected, so that the rotating speed of the driving motor is synchronously matched with the tension adjusting variable, and synchronous self-adaptive optimization of the tension control response speed and the material characteristic change in the production process of the high-strength steel plate is achieved.

The invention discloses a coating machine unwinding tension control method which is characterized by comprising the steps that S1, parameters, operation data and tension data of a coating machine are collected, and a state-space equation of an unwinding tension control system is established; s2, constructing an obstacle function; s3, combining the obstacle function and constructing a non-singular sliding mode surface function; s4, solving an equivalent controller for controlling tension according to the non-singular sliding mode surface function; s5, optimizing key parameters of the equivalent controller by using an aurora optimization algorithm; s6, designing a self-adaptive control rate for improving the anti-interference capability of the unwinding tension control system; the adaptive control rate is combined with the equivalent controller, and a total control signal is output; s7, performing unwinding tension control on an unwinding tension control system according to the master control signal; according to the scheme, the speed of dynamic response can be adjusted, finite time convergence is enhanced, steady-state errors are eliminated, singularity is avoided, convergence is accelerated, and therefore high-precision control over an unwinding tension control system is achieved.

The invention discloses monofilament prepreg yarn dry-method winding equipment and a tension control method, and relates to the technical field of composite material forming, the monofilament prepreg yarn dry-method winding equipment comprises an unwinding yarn box, a yarn roll is connected with a driving motor and used for outputting yarn, the yarn is wound on a hook leg buffer mechanism after being led out of the yarn roll, and the hook leg buffer mechanism is used for adjusting the tension of the yarn; a main shaft is rotatably arranged on the gantry frame in the length direction, and a mold is arranged on the main shaft; the moving trolley is in sliding connection with the gantry frame in the length direction of the gantry frame, the moving trolley is provided with a yarn winding nozzle, the yarn winding nozzle corresponds to the mold, and the yarn enters the yarn winding nozzle after being led out of the hook leg buffering mechanism and is wound on the mold. According to the invention, high-speed automatic winding of monofilament prepreg yarns can be realized, the automation degree is high, and the production efficiency is improved. The yarn tension output by each yarn roll is independently adjusted based on the tension after stranding, the control precision of the yarn tension is improved, the tension is kept stable, and therefore the yarn winding quality is improved.

The invention relates to the technical field of metal rolling automation, and discloses a computer intelligent control system of a rolling mill, which comprises a rolling mill production line, and the rolling mill production line further comprises a tensiometer, a pressure sensor and a displacement sensor; and the computer intelligent control system is electrically connected with an executing mechanism and a sensor of the rolling mill production line and comprises a tension control module, an automatic thickness control module and an online model self-adaptive module. The method comprises the following steps: controlling strip steel tension through a tension control module; the strip steel outlet thickness is adjusted through the thickness automatic control module; and model parameters such as rolling mill rigidity and friction compensation are identified in real time in the rolling process through an online model self-adaption module, and continuous optimization of the control model is achieved. By introducing the online model adaptive module, real-time online correction of the core physical model of the control system is realized, and the problem of model mismatch caused by equipment wear and working condition change is solved.

The invention belongs to the technical field of automatic control, and particularly relates to a digital control system for strip coiling equipment, which comprises the following steps of: firstly, comprehensively acquiring strip tension data and state characteristic information by combining a tension sensing assembly and image acquisition equipment, dynamically adjusting a braking torque parameter, and then, acquiring a dynamic control signal by taking the linear speed of a coiling machine as a target signal; the speed of the uncoiling machine and the speed of the traction roller are synchronously aligned through a following strategy, then a taper tension control mode is adopted, the tension value is dynamically adjusted in combination with real-time coiling diameter parameters, the tension stability and the coiling regularity in the coiling process are ensured, and finally the strip deviation problem is detected and processed in real time according to a closed-loop deviation correction mechanism. The equipment control strategy in the strip coiling process is deeply bound with uncoiling control, synchronous coordination, coiling control and a deviation correction core module, and the integrated control capability of multivariable coordination and self-adaptive optimization is achieved, so that the automation and intelligence level of the strip coiling process is effectively improved.

The invention relates to the technical field of belt conveyors, and discloses an intelligent tensioning control method and system for a belt conveyor. According to the method and system, a dynamic mathematical model is constructed by collecting the current, rotating speed and torque parameters of a driving motor and combining hydraulic cylinder pressure and turnabout drum bearing force data, and high-precision indirect estimation of belt tension is achieved; a progressive adjustment strategy is adopted, the displacement of the hydraulic cylinder is dynamically adjusted according to tension deviation, mechanical abrasion is reduced, and system reliability and severe environment adaptability are improved. The method has the beneficial effects that the tension control error is reduced, the hydraulic action frequency and the maintenance cost are reduced, and meanwhile, the operation efficiency and safety of the conveyor are improved.

The invention relates to the technical field of tension control in the material processing process. The electromagnetic coil winding tension control method comprises the steps that real-time state information is input into a wire rod type recognition model to obtain wire rod type information, and a corresponding tension adjusting model is called from a tension control model library based on the wire rod type information to adjust the winding tension of the electromagnetic coil. And inputting the real-time state information into the tension adjustment model to obtain tension adjustment parameter information, comparing the tension adjustment parameter information with preset tension safety boundary information to generate limited adjustment instruction information, executing tension adjustment operation according to the limited adjustment instruction information to obtain feedback tension information, and sending the feedback tension information to the server. The feedback tension information and the limited adjustment instruction information are compared and analyzed, a real-time tension adjustment result is obtained, and if the real-time tension adjustment result meets the target tension range, the current tension adjustment state is kept. The wire winding device has the effect of achieving accurate adjustment of the wire in the winding stage.

The invention relates to the technical field of rolling forming machine control, and discloses a self-adaptive tension control system of a dry-method electrode continuous rolling forming machine. The system is composed of a tension generation module, a state evaluation module, a dynamic compensation module, a strategy optimization module, a production management database and a rolling execution mechanism. The tension generation module collects original tension data in real time at a transmission node; the state evaluation module analyzes the operation state and generates a tension stability evaluation report; the dynamic compensation module calculates the material deformation compensation amount according to the report and generates a dynamic regulation and control instruction; the strategy optimization module optimizes a strategy and outputs a parameter packet in combination with the instruction and a historical record; the production management database stores material characteristics, equipment history and regulation and control cases; and the rolling execution mechanism is adjusted to operate according to the parameter packet. All the modules cooperate to achieve real-time monitoring, evaluation, compensation and optimization of tension, the traditional control problem is solved, and the product quality and efficiency are improved.

The invention relates to a scraper chain tension dynamic optimization method based on real-time load feedback, and belongs to the technical field of scraper chain control. The method comprises the following steps: acquiring load data of a scraper chain in various operation states; carrying out standardization processing on the load data of various operation states and then extracting features to obtain load time sequence features; carrying out time attention mechanism processing on the load time sequence characteristics and the load data of the multiple operation states to obtain importance weights; a tension value is calculated according to the load data of each operation state and the importance weight of the load data; calculating a real-time working condition coefficient of the current time node, and dynamically adjusting a preset safety tension range to obtain a real-time safety tension range of the current time node; comparing the tension value with a real-time safe tension range, and generating a control instruction according to a comparison result; and executing the control instruction. The tension control method of the scraper chain is optimized, and the control precision of the tension of the scraper chain is improved.

The invention discloses a let-off transmission mechanism of a flexible rapier loom, and relates to the field of spinning. According to the scheme, through lever linkage of a counterweight assembly and a state adjusting assembly, the length of a resisting arm is automatically adjusted when the tension of a warp opening is increased, constant tension control over bidirectional warps in high-frequency reciprocating motion is achieved, and it is ensured that weaving textures are uniform. One-side warp tension triggers the deflection frame to drive the gear frames to be meshed with the gears for fine adjustment, the gears are locked by the double gear frames when the two sides are overloaded, opposite acting force is converted into vertical pushing force, the sliding frame and the guide frame are pushed to move downwards, the warp is rapidly released through two-dimensional contraction of the inclined guide hole and the horizontal guide hole, and tension compensation is completed. And the sub-roller groups are linked with the buffer mechanism to prolong the warp, synchronously keep the tension of the opening stable, provide damage-free shutdown protection, and prevent the warp from being broken or the fabric from being damaged. The mechanism breaks through the limitation of traditional single-side adjustment, dynamic load self-adaption and fault transient response are achieved, and the weaving reliability and quality are remarkably improved.

The invention relates to the field of textile control, in particular to a tension control method and system of a high-speed loom. The method comprises the following steps: firstly, obtaining the tension fluctuation degree of each moment according to the tension data difference of the loom at each moment and the tension data distribution of each moment in a preset time domain of each moment, clustering all moments to obtain a first cluster, and obtaining the tension fluctuation degree of each moment according to the tension data distribution of each moment in each first cluster; the method comprises the steps of obtaining a change state value of each first clustering cluster according to the tension fluctuation degree of each first clustering cluster and the difference of the tension fluctuation degree of each first clustering cluster at each moment, further clustering all the first clustering clusters to obtain second clustering clusters, and obtaining the tension change degree of the loom according to the position distribution of each first clustering cluster in each second clustering cluster. And performing PID control on the loom according to the deviation condition of the tension data of the loom at the current moment and the tension change degree. The control effect on the yarn tension of the high-speed loom can be improved.

The invention relates to the technical field of spaceflight material forming, in particular to a tension control winding process of a spaceflight carbon fiber composite launch canister, which comprises pretreatment, winding forming, curing and post-treatment. The method comprises the following steps: S1, coating a release agent and a modified coating after processing a core mold, carrying out plasma treatment and eliminating stress; the carbon fiber filaments are soaked in resin containing nanometer components, and are pre-stretched after a hot melting reaction; s2, closed-loop tension control is conducted, winding is conducted according to segmented angles, and modified resin is coated between layers to be overlapped in a crossed mode; s3, stepwise heating and curing, dynamically regulating the pressure and introducing inert gas; and S4, polishing after hydraulic demolding, carrying out sand blasting, carrying out transition layer and ceramic coating, and carrying out multi-dimensional detection. According to the process, the mechanical property and environmental adaptability of the launch canister are improved, the process precision is high, defects are reduced, the forming time is shortened, the rework rate and cost are reduced, the spaceflight requirement is met, and the process is suitable for batch production.

The invention discloses a serial cold rolling system thickness and tension control method based on data driving, and relates to the technical field of intelligent predictive control. According to the method, the neural network model is driven by non-autonomous data for prediction, dynamic mapping of tension and thickness parameters is realized through a self-learning mechanism, and high-precision prediction can be completed without depending on real-time measurement data. According to the method, the problems of hysteresis and error accumulation of a traditional measurement link are effectively solved, and deviation transfer in multi-rack cooperative control is effectively inhibited while the prediction efficiency is remarkably improved. A Laguerre function is integrated, parameter dimensionality reduction of a network weight space is achieved through orthogonal projection, the calculation amount is reduced, and the time for reaching a target value is shortened. A multivariable coupling mathematical model of the tension and the thickness of the cold-rolled strip steel is constructed, a Nash equilibrium game optimization strategy is introduced based on a distributed optimal control theory framework, and multi-target collaborative optimization control of the tension-thickness is realized.

The invention relates to the technical field of take-up tension control, and discloses an intelligent take-up tension control system. A multi-source sensing acquisition unit of the system acquires a wire distribution topological graph through a tension sensing platform, acquires a reference tension parameter of a take-up reference point, and acquires strain characteristics and movement speed characteristics of each wire section; the dynamic feature modeling unit performs multi-modal fusion on the reference tension parameters and the features to generate a multi-modal tension feature matrix; the static path analysis unit constructs a static tension conduction path based on the tension characteristic value in the matrix and the corresponding wire section; the take-up execution control unit controls a take-up track of the take-up mechanism on the adjustable path in combination with the static path conduction node value and the corresponding wire section; the dynamic compensation unit collects the dynamic tension parameter of the current wire section in the take-up process, the tension applying direction of the take-up mechanism is compensated and corrected according to the dynamic tension parameter and the static path conduction node value, and the take-up tension control stability and accuracy are improved.

The invention relates to the technical field of cable wrapping machines, and discloses a multi-sensor fused cable wrapping machine adaptive tension control device, which solves the problem that the existing cable wrapping machine is inconvenient for tension control, and comprises a cable wrapping machine body and a tension control mechanism, the cable wrapping machine body is composed of an open-type supporting disc, a double-gear driver, an open-type inner gear ring and a plurality of positioning grooved wheels, the tension control mechanism is connected to the open-type inner gear ring, an output shaft of the tension control mechanism is provided with a wrapping tape discharging roll, the side edge of one end of the open-type supporting disc is provided with an adjustable supporting assembly, and the adjustable supporting assembly is connected with the open-type inner gear ring. A first rotating speed sensor is arranged on one side of the adjustable supporting assembly, a supporting frame is arranged on the side edge of one end of the open type inner gear ring, a tension sensor, a laser displacement sensor and a visual camera are arranged on the supporting frame, and the tension control mechanism is composed of a shell, a tension adjusting assembly, a damping disc, a rotating shaft, a second rotating speed sensor and a controller. Through the device, self-adaptive tension control can be realized.

The invention provides a model predictive control-based precursor tension control method in a carbon fiber drafting process, which comprises the following steps of: determining a precursor tension set value in the drafting process according to carbon fiber production process requirements; establishing a nonlinear dynamic model between the driving voltage and the precursor tension in single-stage drafting; based on the dynamic model, constructing a target function taking the combined minimization of the tension tracking error and the driving voltage energy consumption as a target; solving the target function by adopting an optimization algorithm to obtain an optimal driving voltage sequence in a prediction time domain; and selecting a first item in the optimal driving voltage sequence for control, and repeating the steps at the next sampling moment to realize dynamic and stable control of the tension of the precursor. The problems of insufficient model prediction precision and nonlinear coupling of a traditional control mode are effectively solved, and the system control precision is remarkably improved.

The utility model discloses a special-shaped lithium strip rolling and shaping device which is sequentially provided with a lithium strip placing mechanism and a special-shaped rolling mechanism along a processing path, the lithium strip placing mechanism is used for placing a lithium ingot; the special-shaped rolling mechanism comprises a first special-shaped roller and a second special-shaped roller which can move towards each other and away from each other, the outer surface of one of the first special-shaped roller and the second special-shaped roller is provided with a circumferentially-arranged convex strip, the outer surface of the other one of the first special-shaped roller and the second special-shaped roller is provided with a circumferentially-arranged groove, and the convex strip and the groove are oppositely arranged. The convex strips are matched with the grooves to press indentations on the lithium strip; after the scheme is adopted, the problem of poor production quality of the existing rolling and shaping device can be solved, the rigidity of a lithium strip can be improved, the tension control of unwinding of the rolled lithium strip can be better controlled, the flowability of lithium can be reduced, the problem of material stacking in the rolling process can be better solved through indentations, the rolling speed can be increased, and the production efficiency and the qualified rate can be improved.

The invention discloses an automatic welding mechanism of a foil winding machine, and relates to the technical field of electrical equipment manufacturing, the automatic welding mechanism comprises a supporting plate, and first supporting rods are symmetrically arranged at the top of the supporting plate; the traction mechanism is arranged on the first supporting rod; the supporting frame is arranged on the supporting plate, and a feeding belt is arranged at the top of the supporting frame; and the foil winding mechanism is arranged on one side of the traction mechanism and comprises a pair of mounting plates and a pair of mounting plates which are respectively arranged on the pair of mounting plates. By integrating the feeding and traction mechanism, the foil winding mechanism, the induction mechanism, the cutting and tensioning adjusting device, the positioning and welding device and the limiting mechanism and optimizing the cooperative relation and action logic of all the components, full-process automation from foil belt feeding, tension control, fixed-length winding, automatic cutting to precise positioning and welding of the tail end of a foil roll is achieved.

The invention relates to a method and a device for eliminating stress of a metal thin strip in heat treatment, which are characterized in that: 1) a large-tension metal thin strip conveying mechanism is arranged in a heat treatment furnace of the metal thin strip, and the metal thin strip conveying mechanism keeps tension of 3-6 tons in a workpiece conveying process; and (2) the tension borne by the workpiece is kept to be 3-6 tons through a tension control mechanism of the large-tension metal thin strip conveying mechanism, so that the internal stress of the workpiece disappears in the conveying process, namely the tension borne by the workpiece in the conveying process is kept to be constant to be 3-6 tons, and the internal stress of the workpiece is eliminated when the workpiece passes through the process section of the heat treatment furnace. The large-tension metal thin strip conveying mechanism comprises an unwinding mechanism, a winding mechanism and a tension control mechanism, and the tension between the unwinding mechanism and the winding mechanism is controlled to be 3-6 tons constantly through the tension control mechanism, so that a large-tension control structure is formed. The device has the characteristics of simple structure, low cost, good stress eliminating effect and the like, and prevents the copper strip from vibrating and the workpiece from deforming.

The invention relates to the technical field of tension control, and discloses a longitudinal shearing equipment tension fault-tolerant control method based on multi-source information fusion, which comprises the following steps: acquiring detection parameters in each period, evaluating the credibility of each first type of parameters and each second type of parameters, judging whether each first type of parameters and each second type of parameters reach the standard or not according to the credibility, and if yes, judging whether the first type of parameters and the second type of parameters reach the standard or not. If any one of the first type of parameters does not reach the standard, screening out an estimation model corresponding to the first type of parameters from a preset model library according to other standard first type of parameters and second type of parameters, and calculating an estimated value according to the screened estimation model; replacing the corresponding first type of parameters with the pre-estimated values and inputting the pre-estimated values into a preset control algorithm to calculate target tension; and outputting the target tension. When data of a single sensor or multiple sensors are abnormal, an optimal tension control instruction can be given by utilizing residual reliable data and an internal physical relationship thereof.

The invention relates to a battery pole piece winding tension control method and device and winding equipment. The method comprises the following steps: acquiring the diameter of a roller and the winding thickness of a pole piece wound on the roller; according to the rolling thickness, the initial rolling tension and the tension taper coefficient are determined; wherein the size relation between the winding thickness and the initial tension is a reverse relation, and the size relation between the winding thickness and the tension taper coefficient is a forward relation; according to the roller diameter, the winding thickness, the initial tension, the tension taper coefficient and a preset algorithm, the winding tension for winding the pole piece on the roller is determined; and controlling the winding of the pole piece according to the winding tension. According to the scheme, according to the universal control method suitable for pole piece winding, the good winding effect of different types of material rolls is achieved.

The invention relates to the technical field of mold pressing machining equipment, and discloses self-adaptive tension control high-precision mold pressing equipment which comprises a base, a rack assembly is fixed to the base through bolts, a self-adaptive tension adjusting assembly is arranged on one side of the rack assembly, a tension balance adjusting assembly is arranged below the self-adaptive tension adjusting assembly, and a tension balance adjusting assembly is arranged below the self-adaptive tension adjusting assembly. The tension balance adjusting assembly is inserted between the winding and unwinding assemblies in a penetrating mode, a high-precision upper die control assembly is arranged at the top of the rack assembly, an upper die is fixed to the bottom of the high-precision upper die control assembly through a screw, and the interior of the upper die communicates with a temperature control assembly on the upper portion. According to the high-precision mold pressing equipment with the self-adaptive tension control function, the tension balance adjusting assembly is matched with a feedback system of the pressure sensor, independent and accurate control over the tension of each layer of material is achieved, the problems of interlayer dislocation and layering are effectively solved, and the interlayer attaching precision of layered mold pressing products is greatly improved.

The invention discloses a dyeing machine cloth guide wheel set structure capable of preventing cloth winding, and relates to the technical field of dyeing machines. A support frame is fixedly mounted at the top of the dyeing machine through bolts; the use method of synchronous driving and preliminary guiding, air film resistance reduction and dynamic supporting, intelligent wrinkle detection and smoothing deviation correction and secondary smoothing and adhesion separation is adopted, the front guide roller, the adjusting guide roller and the rear guide roller are synchronously driven by a servo motor to convey cloth, and the cloth is conveyed by the front guide roller, the adjusting guide roller and the rear guide roller. According to the multi-dimensional cooperative anti-wrinkling and anti-winding system, the multi-dimensional cooperative anti-wrinkling and anti-winding effects are achieved through the cooperative effect of three core dimensions of tension control optimization, active path deviation correction and physical separation adhesion on the whole, and the anti-wrinkling and anti-winding effect is achieved through the multi-dimensional cooperative anti-wrinkling and anti-winding effect of the multi-dimensional cooperative anti-wrinkling and anti-winding system, so that the multi-dimensional cooperative anti-wrinkling and anti-winding effect is achieved. And the risks of wrinkle formation and subsequent winding of the cloth in the cloth guiding process are efficiently eliminated.

The invention relates to the technical field of anchor chain tension detection, and discloses an anchor chain fixed section tension detection device and a detection method thereof.The anchor chain fixed section tension detection device comprises a tension detection mechanism, the top end of the tension detection mechanism is connected with a tension control mechanism, and one end of the top of the tension control mechanism is connected with an anchor chain fixed section control mechanism; through the arrangement of the tension detection mechanism, the to-be-detected anchor chain is detected under different conditions of an air reference state, a seawater corrosion state and a blending load state, so that the overall breaking strength index of the anchor chain can be obtained, and the tensile strength of the anchor chain can be detected by controlling the tension change, the wave load and the seawater corrosion effect of the anchor chain. Different service conditions of the anchor chain in an air reference state, a seawater corrosion state and a blending load state are simulated; by comparing and analyzing the mechanical properties of the anchor chain in different states, the weak link of the anchor chain can be accurately positioned, the failure mechanism of the anchor chain can be revealed, and an important reference is provided for maintenance and replacement of the anchor chain.

The invention discloses a U-shaped aqueduct prestress multi-beam cooperative tensioning control method and system. The method comprises the steps that S1, a quantitative derivation model is constructed, based on an aqueduct structural mechanical equilibrium equation, a prestress coupling effect item is introduced for calculation, a prestress coupling matrix is output, and an initial tensioning sequence is derived; the device is simple in structure, and an initial tensioning sequence is deduced by establishing a mechanical equilibrium equation and introducing a coupling effect item; meanwhile, stress / displacement deviation data collected by a monitoring system in real time are fed back to an edge calculation terminal to calculate a control strategy in real time, adjustment is executed by a tensioning device, and therefore a field data closed-loop optimization mechanism is constructed, the tensioning force and sequence can be dynamically corrected, the limitation of a static model is broken through, and the construction efficiency is improved. And a displacement constraint term is introduced as a punishment or control condition in the optimization process, so that deformation overrun of key parts of the structure is effectively prevented, and the precision, safety and intelligent level of prestress construction are remarkably improved.

The invention discloses a mesh antenna metal net zero-constraint splicing method. A metal net is tiled and hung on a working tension applying device, and working tension is applied to the metal net in the transverse direction and the longitudinal direction; in the working tension state, tension control belts are sewn on the edges of the two sides of the metal net in the length direction; lapping two metal nets which need to be spliced and are sewn with the same tension control belts, wherein the sections of the lapping positions are lapped according to the sequence of belt-net-net-belt; sewing two layers of metal nets along the two sides of the tension control belt by adopting composite material sewing lines; and repeating the steps, and sewing all the metal meshes required by the whole antenna reflecting surface in sequence. According to the method, the metal net is spliced by adopting an overlock stitching method, the tension control belt can be detached after splicing is completed, the formed splicing seam is of a net-net structure, the thickness is only 0.07-0.08 mm, the elasticity keeps the original elasticity of the metal net, the net surface tension is more uniform, and the risk that the antenna expansion resistance is increased due to micro shrinkage of the tension control belt at high temperature is effectively eliminated.