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219 results about "Dynamic design" patented technology

Tunnel construction informatization dynamic monitoring system and monitoring method thereof

The invention discloses a tunnel construction informatization dynamic monitoring system and a monitoring method thereof. The system comprises an industrial personal computer, a PLC (programmable logic controller) wireless controller, a high-configuration digital camera, a deformation monitoring sensitization part, digital display acquisition equipment, wireless transmission equipment and a dynamic design feedback device. The method includes: 1), controlling commands to be transmitted to the PLC wireless controller by a computer control main station and controlling the digital camera and the digital display acquisition equipment; 2), acquiring internal force monitoring data by the aid of the digital display acquisition equipment; and acquiring a deformation monitoring image via the deformation monitoring sensitization part by the digital camera; 3), transmitting a monitored value to the computer control main station by the aid of the wireless transmission equipment; 4), analyzing results by the computer control main station via a real-time analysis module; and 5), transmitting the analyzed results to the dynamic design feedback device, analyzing relative difference of the really monitored value and a standard value, and early warming in real time by an early warning module. The tunnel construction informatization dynamic monitoring system is scientific, safe and practical, the method is convenient, instant, fast and effective, and safety problems in construction monitoring of tunnels are avoided.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Hydraulic support and surrounding rock coupling three-dimensional dynamic design method

The invention discloses a three-dimensional design method of a hydraulic support, which considers the dynamic effect of surrounding rocks positioned on a coal face. The three-dimensional design method of the hydraulic support comprises the following steps of: simulating the motions of a top plate, a coal bed and a bottom plate in the advancing process of the coal face by adopting discrete element software; building a support-surrounding rock three-dimensional coupling model, and computing the reverse supporting effect and the control action of the hydraulic support on surrounding rock motion; circularly optimizing support parameters to obtain a structure which has optimal supporting effect on the surrounding rocks; simulating to obtain the distribution regularity of the tension, the bending and the torsion internal force of a part of the hydraulic support by adopting dynamic software under the stress conditions, i.e. unbalance loading, torsion, impact of caving rocks on a shield beam of the hydraulic support, and the like, of the hydraulic support at different time, on different positions and under different geological conditions of coal face advancing; and designing and optimizing the structure form of the hydraulic support by combining with structure arrangement requirements and adopting a finite element method. The three-dimensional design method can effectively enhance the adaptive capacity of the hydraulic support on surrounding rock change, strengthen the stability and the reliability and ensure that the coal mining work is safely and efficiently carried out.
Owner:CCTEG COAL MINING RES INST

Structural dynamic design method for high-pressure rotor of aircraft engine

Disclosed is a structural dynamic design method for a high-pressure rotor of an aircraft engine. The relationship between high-pressure rotor model design parameters and rotor vibration characteristics is determined, so that the design method and criterions are provided for dynamic design of the high-pressure rotor, and the method is of great guiding significance to the design of the high-pressure rotor of the aircraft engine. The method includes: establishing a dynamic model and a dynamic equation of the high-pressure rotor to obtain a nondimensionalization characteristic equation; introducing an equivalent critical speed, and determining a two-order critical speed range of a high-pressure rotor system according to the equivalent critical speed; changing a conventional equilibrium amount configuration method by configuring residual disequilibrium amount phases; configuring a ratio of rotor pole rotation inertia to mass center rotation inertia in design according to a specific design objective; establishing configuration criterions for a rotor bearing stiffness ratio. A conventional design process is changed, structural dynamic active design of the high-pressure rotor is realized, the design process is optimized beneficially, design cycle is shortened, and the method has important construction value.
Owner:NORTHWESTERN POLYTECHNICAL UNIV +1

High-speed bogie dynamic design method based on anti-snake movement frequency band energy absorption mechanism

InactiveCN104787074AIdeal stable and robust performanceReduce lateral coupling strengthBogiesBogieEnergy absorption
The invention discloses a high-speed bogie dynamic design method based on an anti-snake movement frequency band energy absorption mechanism. A high-speed train is viewed as a closed-loop system, and advanced correction is conducted on an instable snake movement oscillating phenomenon of a bogie by means of an adaptive control mode. According to an anti-snake movement matching principle, an optimal distribution theoretical scheme of the bogie is determined. A novel anti-snake movement damper using a double-flow control principle is selected and used, a technical implementation mode of the novel anti-snake movement damper is worked out by using an anti-snake movement series stiffness judging principle, anti-snake movement is restrained softly, or an expansion bag is added into an auxiliary cavity. The dynamic performance assessment should have three stable features of a high-speed bogie. In order to lower lateral coupling strength, a train body model state form is reorganized to analyze aluminum alloy train body lateral coupled oscillation inherent features, the lateral stiffness of a suspension point is determined according to a harmonic vibration reduction mechanism, according to a structural damping constraint effect, the damping optimum value of rubber proportions is selected, a bolt pre-tightening or deadweight wedge-caulking rubber suspension mode is used, and therefore desired stable robust performance of bogie optimal match is achieved.
Owner:DALIAN JIAOTONG UNIVERSITY

Novel high speed pantograph and lightweight dynamic design method thereof

InactiveCN110126625AReduce contact dynamicsAvoid implicating sports relationshipsGeometric CADDesign optimisation/simulationBogieRail profile
The invention discloses a novel high speed pantograph and lightweight dynamic design method thereof. Optimization of bogie parameters is led according to a root locus diagram, the dynamic action of the contact rail of an abrasion wheel is lowered, under the condition of uniform/normative wheel rail profile matching, the limiting speed is improved up to 480 km/h; through optimal design of rubber suspension parameters of equipment under a vehicle, the transverse vibration mass of hostling flexible vehicle body is decreased, and under reasonable and scientific repair program and repair system, the construction speed is increased up to 400 km/h. In order to better count input stimulus formed by high speed pantograph net contact, a fully flexible pantograph landing model and a hostling vehiclerigid flexible coupling simulation model are systematically integrated to construct a wheel rail pantograph net double coupling simulation technology platform. According to complex constraint and accurate analyze of internal force, analysis of a typical case indicates that a novel lightweight design form is needed by an ultra-high speed pantograph, namely the hinging constraint force between an upper arm and a lower arm and the dynamic load effect are reasonably dispersed and reduced through a duck-egg-shaped joint structure, and thus high cycle fatigue is transformed to a static strength problem.
Owner:DALIAN JIAOTONG UNIVERSITY

Multi-unmanned-plane pattern formation method based on pattern database

The invention relates to a multi-unmanned-plane pattern formation method based on a pattern database. The multi-unmanned-plane pattern formation method based on a pattern database includes the following steps: 1) according to a formation pattern request in a formation task, selecting a basic pattern in a preset pattern database, and utilizing the basic pattern to construct the formation pattern, wherein the formation pattern includes a lead plane pattern node, a plurality of wing plane pattern nodes and a pattern entrance position, and the pattern entrance position is the spatial position followed by the lead plane node in real time; 2) establishing a corresponding designation relation between each pattern node in the formation pattern and unmanned planes; and 3) according to the task pattern entrance position carried in the formation task and the corresponding designation relation, determining the absolute position desired value of each unmanned plane, and performing formation arrangement according to the formation pattern. The multi-unmanned-plane pattern formation method based on a pattern database realizes arbitrary combination of patterns, and realizes quick, visual and dynamic design of pattern and dividing and recombination of the basic elements of a complicated pattern at the same time.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Self-adaptive formation method applied to networked cluster intelligent agent system

The invention provides a self-adaptive formation method applied to a networked cluster intelligent agent system and belongs to the technical field of formation control of the networked cluster intelligent agent system. The self-adaptive formation method comprises the following steps: describing formation stability of the networked cluster intelligent agent system by utilizing a consistency regionanalysis method; designing a basic form of a self-adaptive time-varying formation controller; carrying out dynamic design on the coupling strength of the self-adaptive time-varying formation controller by utilizing a self-adaptive parameter design method; designing the measurement based on distributed local relative information to an increment speed of the coupling strength; bringing the self-adaptive time-varying formation controller to the networked cluster intelligent agent system to form a closed ring system; analyzing the formation stability of the closed ring system by applying a self-adaptive analysis and Lyapunov method, so that time-varying formation of the networked cluster intelligent agent system is realized. According to the method provided by the invention, the stability of the self-adaptive controller to the time-varying formation of the networked cluster intelligent agent system is ensured, and a self-adaptive time-varying formation design of the networked cluster intelligent agent system is realized.
Owner:RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN +1

Design method for heptafluoropropane gas fire-extinguishing system

The invention relates to a design method for a heptafluoropropane gas fire-extinguishing system. The fire-extinguishing system is mainly composed of a high-pressure fire-extinguishing agent storage bottle group, a fire-extinguishing agent conveying pipe network and nozzles which are sequentially connected, wherein the fire-extinguishing agent conveying pipe network comprises a main pipe, an ascending pipe and a high-pressure hose which are connected with the high-pressure fire-extinguishing agent storage bottle group, and branch pipes connecting the main pipe with the nozzles; and the high-pressure hose is connected to the main pipe through a follow collection pipe. According to the design method disclosed by the invention, a dynamic design and calculation method is adopted, during a process of spraying a high-pressure liquid onto the nozzles in each protection area through the fire-extinguishing agent conveying pipe network from the high-pressure fire-extinguishing agent storage bottle group, the process of continuous changes of the pressure and the flow speed of the liquid at each point in the fire-extinguishing agent conveying pipe network is subjected to discretization processing, one continuous process is discretized to be formed by superposing a plurality of time slices with a time step Delta t, the pressure and the flow speed in each time step are regarded as constant, and the pressure and the speed of the liquid at each node in the pipe network in each time step are calculated respectively.
Owner:浙江信达可恩消防实业有限责任公司

Method for achieving anti-snaking broadband energy absorption mechanism and optimal configuration method for parameters of bogie

ActiveCN105109510AOvercome constraintsMeet the technical requirements of cross-line applicationBogiesBogieEnergy absorption
The invention discloses a method for achieving an anti-snaking broadband energy absorption mechanism and an optimal configuration method for the parameters of a bogie. According to the method and the optimal configuration method, a dynamic design method is mainly applied, and lead-lag correction of unstable snaking oscillation phenomena of the bogie is achieved in a self-adaptive control manner; an anti-snaking redundant design form of an ICE3 prototype is borrowed, the anti-snaking broadband energy absorption mechanism is achieved through combination application of novel anti-snaking vibration reducers, and the method and the optimal configuration method are simple and applicable; and an anti-snaking soft constraint or anti-blocking technology is borrowed, the hydraulic rigidity is properly reduced, and rheology nonlinear influences are avoided. By means of the method and the optimal configuration method, the design defects of the ICE3 bogie prototype are overcome, a high-speed-rail passenger-dedicated development manner is gradually changed, and then the rate of return on investment is increased; in addition, the adaptability and the friendliness to track lines are improved, and the railway construction investment cost can be saved; and meanwhile the robustness of perturbation or disturbance of natural factors is improved, and particularly when the method and the optimal configuration method are used for mountain lines, and the structural technical service cost can be obviously reduced.
Owner:DALIAN JIAOTONG UNIVERSITY

3D optical grating flexible glue printing technology

The invention discloses a 3D optical grating flexible glue printing technology. The 3D optical grating flexible glue printing technology comprises the following steps that a heat transfer printing release oil layer is printed on coated paper; a first white ink coating is arranged on the heat transfer printing release oil layer in a screen printing manner; a multi-angle dynamic design/pattern is printed on the first white ink coating in an offset printing manner; the multi-angle dynamic design/pattern is covered with a flexible glue film; a semi-finished product obtained in the previous step is subjected to hot pressing, an optical grating pattern is formed on the flexible glue film, and the multi-angle dynamic design/pattern shows the 3D effect; and the coated paper is stripped, a second white ink coating is subjected to screen printing, and a finished product is obtained through cropping according to the specification. The 3D optical grating flexible glue printing technology has the beneficial effects that technology steps are simple, and the multi-angle dynamic design/pattern can be smoothly arranged on the flexible glue film through heat transfer printing through usage of the heat transfer printing release oil and white ink; PVC and TPU flexible glue films are subjected to hot pressing into an optical grating, a soft presswork which shows the 3D effect through multi-angle appreciation is manufactured, the application range of the presswork can be widened, and the 3D optical grating flexible glue printing technology is not limited in application of simple packaging materials or book printing.
Owner:GUANGZHOU FUCHEN PACKAGE PROD CO LTD

Shadow play digital performance platform

A shadow play digital performance platform belongs to the field of the shadow play computer-aided design (CAD) auxiliary performance and is characterized by comprising a system server for storing user information, a platform main controller, a plurality of touch display screens, a plurality of mousse, a plurality of keyboards, a video frequency divider and a main display terminal, wherein the platform main controller is provided with a shadow play digital performance platform software system, the shadow play digital performance platform software system comprises a digital shadow model module for generating a shadow module, a login module for verifying the registration identity of the user, a scene module, a music caption module, a special-efficiency module and a record playback module, the platform main controller respectively controls each mouse and each keyboard or the multi-mode touch display screen to receive the login and motion information of the user, the information of a mouse click position or a touch point position is bond with a flash element of the digital shadow module, all flash elements in the digital shadow module synchronously move along the movement of the click position or the touch point position so as to realize the shadow play performance and the human-computer interaction. The shadow play digital performance platform has advantages of dynamic design and adjustability of the performance process.
Owner:BEIJING UNIV OF TECH

A Dynamic Design Method of Tunnel Initial Support Based on Deformation-Structure Method

The invention provides a dynamic design method of initial support of tunnel based on deformation structural method. Including: the construction of a beam-spring model of surrounding rock and the initial support structure, the deformation data of initial support are obtained, Calculate the load, determine the structural internal force of the initial supporting structure, determine the safety factorof the initial supporting structure according to the calculation of the structural internal force, evaluate the safety of the initial supporting structure according to the safety factor, and completethe design of the initial supporting structure of the tunnel until the initial supporting structure meets the safety requirements. The invention determines the structural internal force of the initial support through the calculation load of the support deformation, which is high in efficiency, convenience and good in timeliness. It provides the basis for changing the design parameters of the initial support, realizes the dynamic design of the initial support, and realizes the quantification of the initial support combined with the safety factor. The ultimate deformation of the initial supportcan be easily predicted based on the time history curve of the node displacement, so that the ultimate load of the initial support can be predicted.
Owner:SOUTHWEST JIAOTONG UNIV +1

Personalized drill bit dynamic design method for complex difficult-to-drill stratum

ActiveCN110110346ASimple preparation processFully grasp the real property parametersGeometric CADDrill bitsPersonalizationDynamic models
The invention discloses a personalized drill bit dynamic design method for a complex and difficult-to-drill stratum. The personalized drill bit dynamic design method comprises the following steps thatS1, rock drillability indexes of the drilled stratum are obtained; s2, performing drill bit tooth rock breaking digital simulation analysis and a gear ring and drill bit composite rock breaking experiment, and establishing a shaft bottom rock interaction mechanical model; s3, establishing a drill string Drill bit The rock system is coupled with the overall dynamic model; s4, designing the toothshape, the tooth distribution density, the crown shape and the gauge protection structure according to the rock mechanical property of the complex difficult-to-drill stratum; s5, optimizing the parameters of the nozzle and the hydraulic structure of the drill bit by utilizing a computational fluid dynamics theory and a numerical simulation method; s6, a tooth material cobalt removal strengtheningtechnology, a high-strength drill bit body material technology and a special tooth-shaped tooth technology are adopted, and the manufacturing process of the drill bit is optimized; the personalized drill bit design method has the advantages that the personalized drill bit design method for the complex and difficult-to-drill stratum is provided, so that the drill bit development period is shortened, and the development cost is reduced.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
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