265 results about "Structural load" patented technology

The invention discloses a coastal port pile foundation structure load calculation method based on a coupling mode, and the method comprises the steps: a hydrodynamic module which evaluates the load and mechanical properties of a port pile foundation structure under different environment conditions; the water power module at least comprises an atmospheric mode module, a sea wave mode module, an ocean mode module and a coupler module; wherein the coupler module exchanges and synchronizes data among the atmosphere mode module, the sea wave mode module and the ocean mode module; the data conversion module is used for converting the wind field data, the wave field data and the flow field data obtained by the hydrodynamic force module into aerodynamic force and hydrodynamic force input files of the pile foundation structure; the finite element analysis module is used for receiving the aerodynamic force and hydrodynamic force input files, establishing a port pile foundation structure model and calculating stress distribution and displacement response of a pile foundation structure, and simulation results output by the finite element analysis module include but not limited to a stress nephogram, displacement field distribution and a buckling phenomenon of a pile foundation.

The invention relates to a reinforced concrete structure model construction method and device and a medium. The method comprises the steps that a first finite element model is established according to geometric parameters of a bridge basic structure; obtaining a material constitutive relation of the bridge structure according to a reinforced concrete structure tensile experiment; determining a first crack width calculation formula based on section model construction of the fiber beam column unit; embedding the material constitutive relation and a first crack width calculation formula into a first finite element model; inputting a structural load effect, and obtaining a structural performance degradation parameter and a structural crack parameter by using the first finite element model; according to the invention, the technology of more accurate reinforced concrete structure simulation based on the fiber beam column unit is realized, and the technical problem of difficult reinforcement crack simulation in the reinforced concrete structure is solved.

The invention discloses a cable-stayed bridge inhaul cable force optimization method and device, a medium and a product, and relates to the technical field of bridge engineering and intelligent optimizing.The method comprises the steps that a simplified cable-stayed bridge model is built based on a target cable-stayed bridge; based on the HiDeNN and a finite element method, a HiDeNN-FEM proxy model is constructed; the HiDeNN-FEM proxy model is a model which is established based on a HiDeNN network and is used for calculating the vertical displacement of a control point of the target stayed-cable bridge, and the vertical displacement of the control point is used for representing the structural load response of the target stayed-cable bridge, the control points are points where tension truss units corresponding to inhaul cables of the target stayed-cable bridge are connected with parallel chord plane truss structures corresponding to beams; and according to the HiDeNN-FEM proxy model, a genetic algorithm is adopted to carry out optimal cable force solution on the target cable-stayed bridge, and an optimal cable force value is obtained. According to the method, the cable force optimization efficiency can be effectively improved.

The invention discloses a structural bearing associated rocket time-phased Q alpha release value design implementation method. The method comprises the following steps: carrying out statistical analysis on actually measured high-altitude wind data aiming at a rocket launching site position to form a high-altitude wind statistical result; carrying out flight standard trajectory design of the rocket to form a standard trajectory data result; developing an attack tilt angle calculation result under a rocket standard trajectory to obtain a Q alpha preliminary design result changing along with flight time; rocket flight load calculation and rocket structure design and optimization are carried out, so that the structure of the rocket meets the carrying capacity; the time-phased Q alpha release value of the rocket launching site is formulated, multiple incremental Q alpha values are obtained on the basis of the preliminary design result of Q alpha, and the corresponding maximum Q alpha release value meeting the maximum bearing bending moment requirement serves as the time-phased Q alpha release value to be output according to the transverse bending moment load corresponding to the Q alpha values; and before emission, emission release evaluation is performed according to the release value of the time-segmented Qalpha. Therefore, the problem of low release probability in a traditional method is solved.

The invention discloses a wind turbine blade semi-coupling aeroelastic modeling method considering nonlinear deformation, and belongs to the technical field of fan simulation calculation. In combination with calculation parameters used by three-party software, establishing a blade structured load model and a blade correction aerodynamic model, calculating an aerodynamic load and a structural load, and superposing: superposing the aerodynamic load, the gravity load and the centrifugal force load of the blade as an external load of a nonlinear structure control equation of the blade, and taking the external load as a calculation parameter; according to the method, the blade nonlinear structure model and the semi-coupling simulation process of the three-party wind turbine simulation software are constructed, and under the same simulation environment and load conditions, the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation, so that the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation calculation. The higher-precision non-linear motion response characteristics of the super-long flexible wind turbine blade are calculated, and a good effect can be achieved in the aspects of initial structure design and response evaluation of the large wind turbine blade.

Aircraft high-load landing event detection, classification and maintenance guidance methods relate to the technical field of aircraft high-load landing event detection. The aircraft high-load landing event detection method collects complete and accurate landing data online during an aircraft landing process and performs an analysis and calculation to determine whether a high-load landing event occurred and determines the type of the high-load landing event. The aircraft high-load landing event detection method removes the high-load landing event determination from the pilot's subjective perception and does not need to wait for decoding of quick access recorder (QAR) data, greatly improving the accuracy and timeliness of high-load landing event detection. In addition, by analyzing and estimating structural loads of the aircraft, the aircraft high-load landing event detection method provides targeted maintenance recommendations for possible aircraft structural damage caused by the high-load landing event, and forms a corresponding report.

In certain embodiments, a method includes accessing, by a processing device, actual operating condition information for an operating condition parameter associated with actual operation of a vehicle. The actual operating condition information corresponds to sensor measurements associated with a vehicle component of the vehicle. The method includes analyzing, by the processing device and using an artificial intelligence model, the actual operating condition information to generate predicted load information for the vehicle component. The method includes determining, according to the predicted load information, an estimated fatigue life for the vehicle component that is individualized for the vehicle component.

The utility model relates to the technical field of sensors, and discloses an integrated compliant branch type six-dimensional force sensor structure based on a Stewart mechanism, a sensor body structure comprises an upper force transmission platform, six compliant branch mechanisms and a lower force transmission platform, the six compliant branch mechanisms are uniformly connected to the upper force transmission platform and the lower force transmission platform according to a specific angle, the flexible branch mechanism comprises a flexible structure I, a flexible structure II and a flexible connecting piece, is an equivalent two-force rod formed by five rotational degrees of freedom and one translational degree of freedom, and meets the characteristic requirements of a two-force rod branch of a Stewart six-dimensional force sensor; according to the utility model, on the basis that the characteristics of easy solution of a force mapping relation and flexible structure of the assembly type Stewart six-dimensional force sensor are maintained, the problems of high assembly difficulty, insufficient structure bearing, time and labor waste, zero crossing, hysteresis and the like of the conventional assembly type Stewart six-dimensional force sensor are solved, and the engineering practicability of the Stewart six-dimensional force sensor is improved.

The invention provides a prefabricated height-adjustable support system for a swivel bridge and a construction method. The system comprises an embedded base, a lower support plate, a height-adjustable core module, an upper support plate and a locking device. The pre-embedded base is of a reinforced concrete structure, the pre-embedded base and a side pier cover beam are cast and formed at the same time before swivel construction, and an anchoring part used for subsequent connection is pre-embedded in the top of the pre-embedded base; the lower support plate is fixedly mounted on the embedded base through the anchoring part; the height-adjustable core module is arranged on the lower support plate, is used for bearing and transmitting an upper structure load and can realize stepless height adjustment in the vertical direction; the upper support plate is supported on the height-adjustable core module, and the top of the upper support plate is used for making contact with a beam bottom embedded part of a swivel beam and transmitting loads. The locking device comprises a temporary locking mechanism and a final locking mechanism. The construction safety and efficiency are remarkably improved, and it is ensured that the stress state of the structure is highly matched with the design.

The invention discloses a multi-mode Internet of Things monitoring and early warning system for old building structure cracks, the multi-mode Internet of Things monitoring and early warning system comprises sensor nodes, an edge gateway and a cloud platform, the sensor nodes comprise a temperature sensor, a humidity sensor, a vibration sensor and a displacement sensor, the data acquisition module is used for periodically acquiring crack width change and temperature, humidity and vibration data around a crack; the edge gateway is used for receiving the sensor data and executing local calculation according to the sensor data, the local calculation comprises calculating the pressure-bearing stress of the crack, calculating an environment comprehensive influence coefficient and calculating a crack risk comprehensive index, and the cloud platform is used for receiving the calculation data of the edge gateway and executing risk judgment according to the crack risk comprehensive index. According to the method, the multi-factor monitoring process of the building structure crack is realized by fusing the crack size, the environmental parameters and the structural load data in real time, and the crack risk level can be evaluated more accurately by dynamically correcting the pressure-bearing stress and environmental coupling effect.

The invention relates to the technical field of wind power generation control, in particular to a variable pitch control method and system for a wind generating set, and the method comprises the steps: firstly obtaining a real-time operation data set which comprises a set state data unit and an environment parameter data unit and is provided with a timestamp mark, and carrying out the feature fusion processing of the real-time operation data set; a combined feature set reflecting the incidence relation between the blade stress state and the wind regime change is obtained, then a pre-trained pitch angle prediction model is called to predict the pitch angle adjustment amount of the combined feature set, and target pitch angle control parameters meeting the power generation efficiency and structural load balance are determined according to the prediction result; and finally, generating a variable pitch execution instruction containing timestamp alignment based on the target pitch angle control parameter, and sending the variable pitch execution instruction to a variable pitch control system, so that the pitch angle adjustment amount can be accurately predicted, the balance between the power generation efficiency and the structural load is realized, and the operation performance and reliability of the wind generating set are improved.

The present invention relates to a floor reinforcement construction method for old building renovation. While preserving the original appearance of exterior walls, the interior floors of a building can be demolished and reconstructed, interior walls are completely demolished, and a pile foundation, frame columns and frame beams are newly added to form a support frame system, thereby completing the conversion of a load-bearing system, and solving the problem of most conventional masonry structure construction methods not changing a structural load-bearing system of a building. The method of the present invention prolongs the service life of a building, and reduces the cost of demolition and reconstruction; besides, by means of optimizing a construction process, the construction period is shortened, and the efficiency and safety of the construction process are ensured. The method has wide application prospects.

The invention discloses a wall surface falling risk assessment method, device and equipment and a storage medium, and relates to the technical field of building safety assessment, and the method comprises the steps: calculating a wall surface initial resistance value based on outer wall hyperspectral image data and a regression prediction model; calculating wall surface structure resistance according to the wall surface initial resistance value and a reduction coefficient corresponding to the wall surface initial resistance value, wherein the reduction coefficient is used for representing the inherent defect of the outer wall; simulating a structural load borne by the wall surface structure through a finite element agent model based on machine learning; and based on the structure load and the wall surface structure resistance, the wall surface falling risk probability is calculated through a Monte Carlo numerical simulation method by applying the structure reliability theory. The hyperspectral image can comprehensively capture the defect characteristics of the outer wall, and the initial resistance value is quantified by combining the regression model to supplement the traditional detection blind area. The reduction coefficient is used for associating inherent defects, the finite element agent model dynamically predicts the load to quantify the dynamic environment influence, and the comprehensiveness of wall falling risk identification is improved.

The invention provides a friction stir tunnel forming device and method for enhancing bearing performance, relates to the field of machining and inner flow channel forming, and aims to overcome the defects of an inner flow channel prepared through an existing friction stir tunnel forming technology in the aspects of structural bearing and fatigue performance. The non-rotating part is of a hollow structure, the rotating part is coaxially arranged in the non-rotating part, the non-rotating part comprises a clamping part, a step part and a shaft shoulder part, the bottom of the shaft shoulder part is provided with a reinforcing rib manufacturing part, the reinforcing rib manufacturing part is used for containing an inner runner surface material and providing forging pressure, and an inner runner surface with a reinforcing rib structure is manufactured. And a rounded rectangular inner flow channel is manufactured at the stirring needle part of the rotating part, so that the bearing efficiency and rigidity of the rotating part in an aerodynamic load and vibration environment are remarkably improved. And through different sections of the stirring needle part, the manufacturing requirements of the aerospace field on the lightweight and integrated heat management structure in the aspects of complex forms and multifunctional integration can be met.

The utility model discloses a combined device supported by a unilateral formwork, which comprises a unilateral formwork system, a unilateral support system, an embedded part system and a support system, the unilateral support system is provided with an embedded part limiting support, and the embedded part system comprises a ground embedded rod, a connecting nut, an external connecting limiting rod, beam pressing section steel and a fixing part. The pressing beam profile steel is located on the upper side of the embedded part limiting support, and the top end of the externally-connected limiting rod penetrates through a reserved seam between the two pieces of pressing beam profile steel and is anchored through a fixing part connected to the surfaces of the pressing beam profile steel in a pressed mode. The support system comprises a ground support rod, a horizontal support rod and a support vertical buried rod, the front end of the ground support rod is supported at the far end of the right triangle frame, the rear end of the ground support rod is supported at the front side of the horizontal support rod, and the bottom of the support vertical buried rod is buried in the ground. A force transmission system is clear, structural loads are transmitted through the reliable force transmission system through reasonable connection and anchoring, the forming effect is good, repeated turnover use can be achieved, erecting and disassembling are convenient and fast, and labor cost is saved.

A modular rack system designed to be configurable for hauling various sizes and shapes of gear. The geometry of the rails in combination with corner supports allow components to be added or removed easily. Structural connection to the vehicle bed with or without a tonneau cover provides for offroad or heavy duty use. The rack is designed to fit within the aerodynamic profile of the vehicle to minimize its footprint when not in use. The lightweight construction, bracketry and vehicle connections allow the rack system to be removed from the vehicle without disassembly. When combined with a structural load carrying tonneau cover, gear can be supported by the cover aiding the load carrying capacity of the rack system. Height adjustment of the rack system provides clearance with the vehicle when carrying longer items.

The invention discloses a cable bent tower cross arm structure load risk assessment method, and relates to the technical field of bridge engineering. The method comprises the following steps: monitoring each monitoring point in a preset time range to obtain monitoring data including risk feature data and protection feature data, and coding and marking the monitoring points; assessing the risk of the cable bent tower cross-brace structure based on the risk feature data, and generating a risk assessment coefficient; evaluating the protection capability based on the protection feature data, generating a defense evaluation coefficient, and associating the two coefficients to form a monitoring coefficient; according to the wind environment condition of the cable bent tower, the acting force of the wind load on the cross brace structure is calculated, and a cross brace jacking force model is introduced for correction. And calculating the risk index of the cross brace structure under the load according to the wind resistance performance parameters of the structure. And comparing the monitoring coefficient with a preset monitoring coefficient threshold value, and judging whether an early warning instruction containing monitoring point position information is generated or not. The method can comprehensively evaluate the load risk of the cable bent tower cross-brace structure, and provides powerful guarantee for structural safety.

The reinforcing structure comprises at least one pair of side edge supporting pieces, a reinforcing piece and a plurality of connecting pieces, the two side edge supporting pieces are arranged on the two sides, corresponding to the door and window opening to be opened, of the wall in a penetrating mode correspondingly, the reinforcing piece stretches across the upper portion of the door and window opening to be opened, and the connecting pieces are arranged on the side edge supporting pieces. The two ends of the reinforcing piece are correspondingly erected on the side supporting pieces, and the connecting piece penetrates through the reinforcing piece and the wall so that the reinforcing piece can be fixedly connected with the wall. The pair of side edge supporting pieces are erected on the two sides of the door and window opening to be formed, and then the reinforcing pieces stretch across and are connected with the wall body structure above the door and window opening to be formed, so that supporting of the upper structure load of the wall body can be achieved; and the side supporting pieces and the reinforcing pieces can be flexibly adjusted according to the size of the hole and the load of the upper portion, so that the bearing capacity requirements of holes of various spans for the reinforcing structure are met, and the reinforcing structure can adapt to the construction requirements of holes with the width larger than two meters.

The invention is suitable for the field of predictive life calculation of aeronautical equipment, and provides a real-time high-precision structural finite element analysis method based on a reduced-order model, which is used for carrying out life calculation under structural load monitoring based on life parts of an airframe. According to structural load monitoring, airborne real-time data flow, an after-flight parameter data file and test bed data collected by a sensor serve as input, import and'decoding ', and calculation of structural load monitoring is carried out through a maintenance twin modeling and maintenance decision calculation software platform driving operation model based on a reduced-order model. Carrying out finite element load monitoring data and residual life calculation on parts with life on the machine body; the method sequentially comprises the steps of data processing, stress-strain calculation, rain flow counting, material attribute calculation and stress / strain fatigue calculation.

The invention relates to the technical field of wind turbine generators, and discloses an active wake flow yaw regulation and control method and device considering fatigue damage of a wind turbine generator. A wake flow yaw optimization model is constructed by combining wind conditions, unit coordinates and operating parameters with an engineering wake flow model, and it is ensured that wake flow evaluation fits the actual working condition; the fatigue damage of the unit is accurately quantified by calculating the structural load and the target damage equivalent load, so that the yaw limiting angle is determined, and the damage is prevented from being intensified due to excessive yaw in the regulation and control process; a multi-target yaw optimization method for balancing generating capacity and fatigue damage is adopted for iterative solution to obtain a field-level yaw control matrix, damage deterioration caused by the fact that an old strategy is still used after fatigue of a unit is increased is avoided, long-term safe and efficient operation of the wind power plant is finally guaranteed, and the dual targets of long-term safe operation and efficient power generation of the wind power plant are achieved. And the dual requirements of the wind power plant on the operation safety and the economical efficiency in the whole life cycle are practically met.

The present invention discloses a method for screening critical structural loads, comprising the following steps: S1. Obtaining result data for load operating points: Calculating all load conditions using an engineering method or a Gfem model to obtain load operating points and the results of the load operating point calculations; S2. Obtaining the structural loads of the structure under investigation at the load operating points: For the structure to be investigated, obtaining the structural loads from the calculation results in step S1, and determining values for bending, shear, torsion, and other structural loads based on actual conditions. The present invention forms a closed convex polygon based on the load data points. According to the properties of convex polygons, points within the convex polygon (including remaining vertices) are all located on the same side of the extension line of any side thereof. Based on the combined envelope, the critical load design condition can be ultimately selected, ensuring that severe load conditions are not omitted.

The heavy steel beam rooting structure comprises a beam clamp unit and a rooting cross arm, the beam clamp unit comprises pressing plates and a large bottom plate, the pressing plates are connected with the large bottom plate, the pressing plates and the large bottom plate are located on the two sides of the rooting cross arm respectively, and the two pressing plates are pressed on the two sides of a steel beam flange respectively; and a base for bearing a load is mounted on the large bottom plate. According to the heavy steel beam rooting structure, after a load is transmitted to the base through the channel steel vertical rods, a bidirectional mechanical path is formed under the action of the beam clamp units, the longitudinal load is evenly diffused to the steel beam flange along the plane of the large bottom plate, and efficient bearing is achieved through the overall rigidity of the steel beam; when the large bottom plate is loaded and bent, the displacement direction of the connecting rods is restrained through the preset holes, the connecting rods are induced to generate an outward expansion trend through geometric deformation, and meanwhile the connecting rods at the pressing plates are driven to form an inward compression trend, so that the pressing force of the pressing plates on the steel beam flanges is increased, transverse self-locking reinforcement is achieved, and sliding and loosening are effectively prevented.

The invention relates to a textured flexible pipe vortex-induced vibration suppression device based on auxiliary rod TMD control, and the textured flexible pipe vortex-induced vibration suppression device comprises an inner-layer force bearing pipe body, a rubber layer wrapping the outer surface of the inner-layer force bearing pipe body, a textured structure arranged on the outer surface of the rubber layer, and a suppression assembly arranged on the outer side of the rubber layer, the textured structure is used for disturbing a flow field to inhibit vortex generation; the passive TMD mechanism is formed by the auxiliary control rods evenly distributed in the circumferential direction, the springs with optimized parameters and the damping system, out-of-phase response can be generated when a main structure vibrates, vibration kinetic energy is rapidly absorbed and dissipated, particularly, the excellent vibration reduction performance is shown in a resonance area, the vibration amplitude and the fatigue damage accumulation rate of the flexible pipe are greatly reduced, and the mechanical performance of the flexible pipe is improved. Meanwhile, the textured structure is arranged on the surface of the rubber layer, the development process of a fluid boundary layer can be effectively disturbed, periodic falling of vortexes is destroyed, and the lift pulsation amplitude is remarkably reduced.

The present invention discloses a method for determining the equivalent pretension of cables. The method is based on nonlinear implicit equation construction and the Steffensen iteration method. Under the condition that the structural load and support state are known, the cable force value under the load state is targeted. Considering geometric nonlinear effects, the problem of determining the equivalent pretension of cables is transformed into the problem of solving multiple relatively independent nonlinear implicit equations. An iterative formula for the equivalent pretension is constructed based on the principle of the Steffensen iteration method. A set of equivalent pretensions of cables with a cable force error within an allowable error range is obtained through cyclic iterative solutions. This method has a small number of iterations, a short solution time, and has a convergence efficiency of second order or higher, high applicability, outstanding computational efficiency, and stability. It is widely applicable to the problem of determining the equivalent pretension of cables in various prestressed structures.

The utility model relates to a horizontal turning plate, belongs to the technical field of building construction, and particularly relates to a horizontal turning plate placed between cantilever outer frame I-shaped steel, which comprises two I-shaped steel main bodies, and hinges are fixedly mounted on the inner sides of the two I-shaped steel main bodies; according to the overhanging scaffold, the two hinges are matched with the folding pull rods, so that the turning plates can rotate, falling garbage is opened and removed, the overall cleanliness of the overhanging scaffold and the load of the overhanging structure are kept, overload is avoided, and meanwhile when the overhanging scaffold is not used, the two turning plates are closed to prevent sundries from falling and hurting people when an upper structure is constructed; by arranging the scraping and sweeping mechanism, when the two turning plates are rotationally opened, the two scraping plates slide along the inner sides of the sliding grooves through the sliding blocks fixed to the two ends under the action of the gravity of the scraping plates, garbage is scraped and swept, and falling of the garbage is ensured; the problems that an existing cleaning mode is low in efficiency, potential safety hazards exist, efficiency is not high and not flexible enough, and structural loads cannot be effectively reduced are solved.

The invention provides a karst tunnel cavity self-adaptive filling method and system, and relates to the field of tunnel construction intellectualization. Constructing a three-dimensional geologic model of the karst tunnel cavity; according to the cavity filler performance demand matrix, the cavity geometrical morphology, the geological condition, the tunnel structure load condition and the engineering demand, a dynamic mapping relation model between the foam light soil performance parameters and the raw material proportion under the multi-target constraint is established, and a foam light soil proportion scheme is calculated according to the dynamic mapping relation model; a cavity grouting filling scheme is generated according to different working condition requirements, so that a grouting hole site sequence, a diffusion radius, a grouting path, a filling mode, a flow parameter, a pressure parameter and a vibration parameter are dynamically optimized, regulated and controlled on a construction site according to the cavity grouting filling scheme. The intelligent degree, the reliability, the economical efficiency and the environmental protection level of karst tunnel cavity treatment are remarkably improved.

The invention discloses a structural load prediction method, device and equipment and a computer readable storage medium, and relates to the technical field of wind power, and the method comprises the steps: obtaining geometric parameters and material attribute parameters of a to-be-predicted fan structure, and an environment parameter feature range of an environment where the to-be-predicted fan structure is located; constructing a multi-physics field coupling model according to the geometric parameters, the material attribute parameters and the environmental parameter characteristic range; the multi-physics field coupling model comprises a temperature field module, a structural mechanical field module, an airflow field module and a particle impact field module, and the physics field modules perform bidirectional data exchange through coupling interfaces to simulate interaction among the physics fields; acquiring an environmental parameter value of the to-be-predicted fan structure under the target working condition; inputting the environmental parameter values into a multi-physics field coupling model to obtain mechanical response data of the to-be-predicted fan structure under the target working condition; and determining predicted load data of the to-be-predicted fan structure according to the mechanical response data.

The invention discloses an underwater robot depth and course control system, which relates to the technical field of underwater robots, and is characterized in that an equivalent strain energy anomaly index and a local maximum principal stress anomaly index are extracted through a structure-heat-fluid coupled three-dimensional finite element simulation model, and a failure risk prediction model is constructed by using a machine learning model; taking the comprehensive feature vector as input, and outputting a sealing structure failure prediction coefficient as a basis for dynamically adjusting a control strategy; the system limits or optimizes the propeller power, buoyancy adjusting frequency and course angle change rate in real time according to the failure prediction coefficient of the sealing structure so as to reduce the structural load and delay the fatigue process, a prediction model is continuously optimized through an error sample driven incremental learning mode, closed-loop self-learning and self-adaptive evolution of the control system are achieved, and the system reliability is improved. Therefore, the operation safety and the task execution stability of the underwater robot in the complex deep sea environment are improved.

The invention discloses a rigid-elastic coupling flight simulation platform of a large flexible aircraft and a control method of the rigid-elastic coupling flight simulation platform. The rigid-elastic coupling flight simulation platform comprises an upper motion platform, a lower fixed base, six electric servo actuators forming a parallel structure, a control system and a main controller. The method is characterized in that hinge points of six actuators on a lower fixed base adopt a non-concyclic optimized layout, the distance between the hinge points in the pitching axis direction of the platform is remarkably increased, a base geometric configuration longer in the longitudinal direction is formed, then the platform is embedded into an advanced rigid-elastic coupling flight mechanical model, and the model is a three-dimensional model. According to the method, effective verification of key flight events which are difficult to accurately simulate by a traditional six-degree-of-freedom platform can be realized, such as wing flutter boundary exploration of a large-flexibility aircraft, structural load coupling analysis under large maneuver, flight control law performance evaluation under rigid-elastic coupling influence and the like. Physical motion of the simulation platform can accurately reproduce complex dynamic characteristics predicted by the model, so that credibility and engineering application value of flutter simulation results are greatly improved.

The present invention relates to a method for controlling the angles of attack of wind turbine blades, based on a linear model of the wind turbine using a parameter indicative of the acceleration of the wind turbine tower, the linear model being constant across the entire wind turbine operating range. The invention further relates to processing means configured to execute the model-based predictive control. The invention further relates to a method for controlling the position of a moving mass coupled to the wind turbine, based on a linear model of the wind turbine using a parameter indicative of the acceleration of the wind turbine tower and a parameter indicative of the position of the moving mass, the linear model being constant across the entire wind turbine operating range.