220 results about "Ground vibrations" patented technology

The invention relates to the technical field of welding industrial robots, and discloses a damping device for an arm of a welding industrial robot, which comprises a base, a mechanical base, a mechanical arm and an end effector, and a second spring in a damping cylinder at the top end of the damping device is matched with a damping column I of the mechanical base; arm weight, dynamic load and ground vibration borne by the base are effectively dealt with, it is avoided that vibration is transmitted to the mechanical arm to affect welding precision, a second spring releases energy through deformation conversion during vibration, the mechanical base and the arm are subjected to shock absorption, and when shock absorption is not needed, the mechanical base and the arm can be tightly connected through a top bolt and other components and absorb energy through friction rubber. The fixing rod is taken down when the connecting position of the end effector does not need damping, the first spring conducts damping on the connecting position of the mechanical arm and the rotating connecting block, the situation that the welding position is not accurate due to track deviation of the mechanical arm is avoided, the fixing rod is used for limiting and fixing when damping is not needed, and a friction plate on a connecting column can absorb vibration impact; efficient and accurate welding operation and stable operation of equipment are guaranteed.

The invention belongs to the technical field of vibration isolation testing, and particularly relates to a method for testing the vibration transmissibility of an autonomous excitation active vibration isolator. The method comprises the steps of excitation signal generation and input, vibration signal acquisition, signal coherence analysis and vibration transmissibility calculation. Due to the fact that ultra-precision equipment is sensitive to environmental vibration, an active vibration isolator is usually needed when the ultra-precision equipment is used, and low-frequency vibration such as ground vibration is isolated. In order to evaluate the vibration isolation performance of the active vibration isolator, the vibration transmissibility of the active vibration isolator needs to be tested and analyzed. According to the test method, an actuator and a sensor of the active vibration isolator are adopted, and an additional excitation device and a test sensor are not needed. The method provided by the invention is simple and convenient to implement, short in time consumption and good in test effect, and can solve the technical problem of testing the vibration transmissibility of the active vibration isolator.

The invention relates to an unmanned tractor operation path tracking and machine tool cooperative control system and method, and the system obtains the position and posture of a tractor, machine tool operation parameters and topographic information in real time through fusing the data of multi-source sensors, such as GNSS positioning and laser radar topographic perception. A multi-objective optimization function including a path tracking error, an operation precision error and a ground vibration excitation amount is constructed, and a particle swarm-genetic algorithm (PSO-GA) hybrid optimization algorithm is introduced for result optimization, so that cooperative control of tractor unit operation parameters such as a steering angle, a vehicle speed and a machine tool hydraulic parameter is realized. According to the method, in the operation of the unmanned tractor in the hilly terrain, the path tracking error is effectively reduced, the operation uniformity is improved, the influence of terrain factors on the operation is reduced, and the operation efficiency and the equipment durability under complex working conditions are remarkably improved.

The invention relates to the technical field of geological surveying and mapping, and discloses urban three-dimensional geological surveying and mapping equipment which comprises a placement table, three supporting legs are rotatably connected to the inner wall of the placement table, air pressure sleeves are arranged at the bottoms of the three supporting legs, and fixing rings are fixedly connected to the inner walls of the air pressure sleeves. An operator supports the surveying instrument through the supporting assembly, then rotates the air pressure sleeve to enable the air pressure sleeve to be perpendicular to the ground, finally places the extrusion assembly to descend, enables the piston rod to make contact with the ground, enables the piston rod to extrude air in the air pressure sleeve and enables the air pressure to be increased, and generated ground vibration can be transmitted to the piston rod when the surveying instrument conducts surveying around a large number of vehicles. Kinetic energy is absorbed and vibration is relieved through compressibility of high-pressure gas at the top of the piston rod, so that vibration borne by the surveying instrument is reduced, and frequent vibration of the surveying instrument and influence on surveying and mapping accuracy when the surveying instrument is used for surveying and mapping in an area with many running vehicles are effectively prevented.

The invention discloses a blasting vibration monitoring method and system based on vision and vibration sensors, and relates to the technical field of blasting vibration monitoring. An aerial vision monitoring device is arranged at a set height right above a blasting point, and a vibration sensor array is radially arranged around the blasting point; and the visual monitoring device and the vibration sensor array are in wireless communication connection with the blasting vibration analysis module based on the computer. Omnibearing monitoring of the blasting process is achieved by combining the aerial vision monitoring device and the ground vibration sensor array, ground vibration data can be captured, and the scattering condition of fragments generated by explosion can be observed. An image feature recognition algorithm is used for analyzing an image captured by a high-speed camera, and visual evidence is provided for understanding the explosion effect. Complex vibration data and visual feature changes can be converted into charts and schematic diagrams which are easy to understand through image processing software and a data visualization tool, and non-professionals can conveniently and rapidly grasp key information.

The invention provides an immersed tube joint air cushion suspension device and a control method thereof, and belongs to the field of immersed tube transportation. The immersed tube section air cushion suspension device is divided into the air cushion suspension unit, the partition control unit, the communication unit and the central control unit, and intelligent air cushion suspension transportation of immersed tube sections is achieved; through the method, the suspension height and speed of each subarea and the transportation angle of the whole immersed tube joint can be intelligently controlled, and in the transportation process of the immersed tube joint, the method has the advantages that friction force and ground vibration are reduced, carrying is efficient, control is accurate, the method adapts to various terrains, damage to the ground is reduced, and the method is environmentally friendly and safe.

The invention provides a building group seismic loss probability assessment method based on seismic oscillation intensity random field simulation, and belongs to the technical field of seismic loss assessment. The method provided by the invention comprises the following steps: firstly simulating seismic oscillation of a region by adopting a seismic oscillation intensity random field simulation technology to obtain seismic oscillation intensity spatial distribution of different sites, and then estimating loss probability distribution of each building by utilizing a building anti-seismic performance model and a building vulnerability database. According to the method, the occurrence probability of extreme earthquake loss of a large-scale building group can be evaluated more quickly and accurately, and important support is provided for earthquake risk evaluation and post-disaster emergency decision, so that the disaster resistance and recovery capability of a city are enhanced, and the overall toughness of the city is improved.

The invention provides an external damage monitoring and early warning method and system for a 10KV cable, and belongs to the technical field of abnormity monitoring, and the method specifically comprises the steps: determining the construction external damage risks of different burying regions and risk regions in the burying regions based on the matching conditions with the working data of different types of heavy mechanical equipment; and obtaining distribution data of the risk area, determining a monitoring and early warning strategy of the risk area in combination with construction external damage risks of different risk areas, and obtaining real-time ground vibration data of the risk area at a monitoring frequency corresponding to the monitoring and early warning strategy. And whether an early warning signal is sent out is determined according to an analysis result of the real-time ground vibration data and a monitoring early warning strategy, so that the safety and the reliability of cable operation are ensured.

The invention relates to the technical field of rail transit, and discloses a rail transit tunnel surface environment vibration assessment method, system and device and a medium. The method comprises the following steps: constructing a vehicle-rail-fastener dynamic model; calculating a fastener acting force frequency spectrum according to the vehicle-track-fastener dynamic model; constructing a 2.5 D finite element-basic solution solving model of tunnel-surrounding rock; solving the tunnel-surrounding rock 2.5 D finite element-basic solution solving model to obtain basic solution equivalent vibration source intensity; and calculating earth surface vibration according to the fastener acting force frequency spectrum, the basic solution equivalent vibration source intensity and the field layered soil body power transfer matrix model. According to the method, track vibration, tunnel vibration and site vibration are decoupled, the calculation method with the highest calculation efficiency is adopted in each subsystem, the advantages of each modeling method are fully combined, the calculation efficiency is extremely high, the obtained result is more accurate, the cost is low, and therefore the track traffic tunnel surface environment vibration condition is rapidly and accurately evaluated.

The invention provides an in-situ single-station earthquake early warning method, electronic equipment and a computer program product, and relates to the technical field of earthquake early warning. The method comprises the steps of obtaining first acceleration waveform data based on three-component acceleration of ground vibration, and judging whether an earthquake event occurs based on the first acceleration waveform data; if it is determined that the earthquake event occurs, obtaining P wave arrival time based on the first acceleration waveform data; obtaining second acceleration waveform data under the corresponding time window after the arrival of the P wave based on the obtained arrival time of the P wave; and on the basis of the second acceleration waveform data, related parameters predicted under the corresponding time window of the P-wave arrival time are obtained, and the related parameters comprise the epicentral distance, the azimuth angle, the epicentral position, the magnitude and the ground peak acceleration. The method is used for in-situ earthquake early warning earthquake event identification, P wave arrival time pickup, earthquake positioning, earthquake magnitude estimation and ground peak acceleration prediction so as to improve the reliability of in-situ earthquake early warning information.

The application relates to the technical field of ring network boxes, and discloses a primary and secondary fusion ring network box which comprises a box body and a box door, the box door is rotationally connected to the box body, a plurality of supporting strips are arranged on the box body, supporting rods are rotationally connected to the supporting strips, rotating wheels are fixedly connected to the supporting rods, and a fixing structure is arranged on the box body and used for fixing the box body. The rotating wheels are fixedly connected to the supporting rods, the rotating wheels can drive the box body to rotate, the box body can be dismounted from the cabinet by a worker, the ring network box can be taken out from the cabinet, and the ring network box can be maintained and processed. Meanwhile, the fixing structure fixes the box body, the box body is not prone to sliding in the cabinet, and the situation that the box body shakes due to ground vibration is reduced.

The utility model discloses an anti-collision municipal drainage pipeline which comprises a municipal drainage pipeline body, the outer wall of the municipal drainage pipeline body is fixedly connected with a protection reinforcing mechanism, and the lower end of the protection reinforcing mechanism is provided with a damping protection mechanism in a positioning mode. According to the anti-collision municipal drainage pipeline, the polyethylene protection block protects the outer wall of the municipal drainage pipeline body and is positioned through the connecting positioning block and the bolt, the inner protection reinforcing block and the rubber sleeve block are arranged on the inner side of the polyethylene protection block, the overall protection performance can be enhanced, and the structural strength of the pipeline is enhanced; the U-shaped damping frame is arranged, pipeline breakage and deformation caused by soil settlement, ground movement or external force impact are prevented, the damping protection mechanism, the damping damper and the elastic piece are arranged on the inner side of the U-shaped damping frame, the buffering force can be enhanced, the pipeline breakage risk caused by earthquakes, ground vibration or external force impact can be reduced, and potential safety hazards are reduced.

The invention provides a pavement flatness detection method and system, and is suitable for the technical field of pavement flatness detection. The method comprises the steps of software and hardware preparation, coded pattern data acquisition, coded pattern data processing and uneven area statistics, and high-precision acquisition of pavement depth information is realized by carrying a range finder, a surface structured light projection device and a high-definition camera through an unmanned aerial vehicle and adopting a surface structured light technology; according to the method, automatic flight path planning is utilized, real-time data processing is combined, and efficient detection of the full length of the road surface is achieved; the detection system is carried by the unmanned aerial vehicle, ground vibration interference is isolated, meanwhile, the manual participation degree is reduced, the stability of the system in unevenness measurement is remarkably improved, the automation level of detection and the data processing efficiency are improved, and the adverse effect of all-road-section fences on traffic is also avoided; according to the method, more reliable and consistent pavement flatness evaluation can be provided in a complex environment.

To provide an evaluation support device and an evaluation support method for supporting confirmation of the condition of the hard ground where piles are to be installed.SOLUTION: A management device 20 that supports confirmation of the hard ground includes a measurement information storage unit 22 that stores measurement values of the frequency of ground vibration in association with measurement positions of ground vibration, and a control unit 21 connected to a display device. The control unit 21 calculates a frequency distribution of a spectral ratio obtained by dividing the spectrum of a horizontal component by the spectrum of a vertical component from the measurement values recorded in the measurement information storage unit 22, and converts the frequency of the frequency distribution into depth. The control unit 21 outputs to the display device a map that displays depth distribution information for the measurement positions, with the display format changed according to the spectral ratio.SELECTED DRAWING: Figure 1

The invention provides a mechanical arm control system and method, and relates to the technical field of mechanical arms, and the system comprises a motion parameter module which is used for obtaining motion parameters of a mechanical arm; the spraying parameter module is used for acquiring spraying parameters of the nozzle; the environment data module is used for acquiring working environment data; the precision control module is used for determining precision control discrimination parameters according to the ground vibration data; the thickness control module is used for determining spraying layer thickness control judgment parameters according to the spraying parameters, the wind power data, the temperature data, the humidity data and the motion parameters; the motion control module is used for determining motion control discrimination parameters according to the motion parameters; and the control scheme module is used for generating a control scheme according to the precision control discrimination parameter, the spraying layer thickness control discrimination parameter and the motion control discrimination parameter. According to the invention, the timeliness and accuracy of manipulator control can be improved.

The invention relates to the field of signal identification, in particular to a debris flow ground vibration signal identification method and system, and the system comprises a precipitation monitoring module which is used for automatically sending early warning information when the daily precipitation reaches a precipitation threshold value, and a signal processing module which is used for collecting and preprocessing ground vibration signals corresponding to monitoring stations, the disaster early warning module is used for learning the ground vibration pre-data to generate a corresponding probability prediction map and issuing a cooperative instruction when a probability value is greater than a probability threshold value, and the cooperative identification module is used for capturing a secondary vibration signal of a monitoring station and judging whether the secondary vibration signal is abnormal or not according to a frequency threshold value. The debris flow early warning and protection method adopts corresponding protection measures, combines machine learning, recognizes the possibility of debris flow occurrence in advance, and automatically adopts protection measures such as road blocking, thereby reducing disaster loss, realizing early warning and protection of debris flow, and ensuring personnel and property safety.

The invention discloses a ground vibration simulation method, system and device and a medium, and relates to the field of seismic analysis, and the method comprises the steps: obtaining a plurality of seismic oscillation records; performing data filling on each seismic oscillation record by adopting a random finite fault method to obtain a plurality of sample seismic oscillation records; determining a plurality of condition parameters of each sample seismic oscillation record to obtain a multi-label vector of each sample seismic oscillation record; constructing a seismic oscillation simulation model based on the conditional denoising diffusion probability model, each sample seismic oscillation record and the multi-label vector of each sample seismic oscillation record; and carrying out seismic oscillation simulation under different seismic scenes based on the seismic oscillation simulation model. According to the invention, the complexity of the ground motion simulation model is reduced, and the precision of ground motion simulation is improved at the same time.

The invention provides an anti-impact six-degree-of-freedom quasi-zero stiffness vibration isolation platform which comprises a first-stage vibration isolation layer and a second-stage vibration isolation layer and is characterized in that the first-stage vibration isolation layer is composed of four self-adaptive quasi-zero stiffness vibration isolation systems and used for supporting a panel and isolating vibration from equipment or the ground; the second-stage vibration isolation layer is composed of four active vibration isolation systems and used for further attenuating residual vibration and restraining internal motion disturbance of equipment. According to the quasi-zero-stiffness vibration isolator, the core problem that a traditional quasi-zero-stiffness vibration isolator cannot adapt to dynamic load changes and the anti-impact requirement is solved, a high-reliability and ultra-quiet environment is provided for high-end precision manufacturing, six-degree-of-freedom vibration control can be achieved, a vibration isolation belt is wider, vibration isolation of a 0.1-500 Hz vibration source can be achieved, the bearing capacity is large, the 20000 kg bearing requirement can be met, and the quasi-zero-stiffness vibration isolator is suitable for large-scale popularization and application. The device can adapt to precise instruments of different models, and is wide in application range and high in universality.

The invention discloses an intelligent operation control system and a data processing method thereof, and the system comprises a monitoring module, a data analysis module, a data collection module, and an alarm module. The monitoring module comprises a video data acquisition device arranged in the pipe gallery; the data acquisition module comprises a pipeline vibration acquisition sensor and a ground vibration acquisition sensor; the data analysis module is used for constructing vibration waveform image data of the pipeline and ground vibration waveform image data; and the alarm module sends an alarm signal. By means of the system, the situation of the pipeline can be monitored in real time, pipeline vibration data and ground vibration data are monitored, the data are processed through the data analysis module, and whether the abnormal situation exists in the pipeline or not is judged. Once the system detects that the pipeline is abnormal, the alarm module can send out an alarm signal in time to help an operator to quickly respond, so that the possibility of accidents is reduced, and safe and stable operation of the pipeline system is guaranteed.

This invention relates to the field of water conservancy engineering construction technology, and discloses a method and system for controlling blasting vibration during lock excavation. By collecting information on the geological hardness of rock strata and the distance to surrounding buildings, and combining this with finite element analysis to simulate the blasting energy distribution, a dynamic matching mechanism for borehole depth and charge quantity is constructed. This method overcomes the limitations of traditional empirical parameter settings and uses iterative simulation and optimization algorithms to achieve coordinated adjustment of borehole depth and charge quantity. For example, in areas with high rock hardness, by increasing the borehole depth and matching a segmented charge strategy, the blasting energy is uniformly released in the deep rock mass, effectively reducing the peak ground vibration and avoiding structural damage to adjacent buildings. Furthermore, by introducing multi-dimensional data analysis and multi-scenario simulation verification mechanisms, it can flexibly cope with complex working conditions such as uneven rock hardness, topographical undulations, adjacent water bodies, or dense building clusters.

The application discloses a spraying robot laser radar inertia tight coupling positioning method based on IMU vibration spectrum sensing, comprising the following steps: 1) collecting IMU original data and preprocessing, and constructing a multi-dimensional standardized ground vibration fingerprint; 2) receiving the output multi-dimensional standardized ground vibration fingerprint, and realizing integrated decision of ground state sensing and positioning risk assessment; 3) according to the output decision triple, dynamically matching a pre-established multi-dimensional mapping library of “ground type-vibration interference level-treatment strategy”; 4) fusing the output point cloud without vibration noise and distortion and IMU pre-integration data, realizing adaptive tight coupling state optimization, and outputting pose estimation residual error; 5) based on the output pose estimation residual error, evaluating the mismatch degree of the current positioning system parameters and the environment, and realizing full-link closed-loop adaptive optimization. The application realizes integrated decision of ground type identification and positioning risk, and solves the problem that ground sensing and positioning decision are disconnected.

The application provides a kind of aircraft servo elastic dynamics model correction method considering operating surface gap, first aircraft structure is divided into substructure, and the aircraft dynamics model containing aileron gap nonlinearity is established according to substructure branch modal;And additional inertia force caused by aircraft operating aileron deflection is introduced in dynamics model, and the aircraft open-loop servo elastic motion equation containing aileron gap nonlinearity under independent generalized coordinate is obtained;According to sensor output equation, rudder transfer function and flight control system equation, the aircraft nonlinear servo elastic closed-loop system model containing aileron gap nonlinearity is established, and the model is corrected based on ground vibration test, rudder frequency response test and gap measurement test result, and the stability of the model is judged based on simulation analysis result and open-loop frequency response test result and is further corrected, which improves the accuracy of gap nonlinearity aircraft aerodynamic servo elastic characteristic evaluation, and is helpful to guide aircraft servo elastic ground test engineering practice.

The application provides a whole vehicle railway folding conveying belt anti-intrusion control method and system, three-axis acceleration information of the folding conveying belt in the transportation process is collected; the intrusion weight corresponding to each axis in the three-axis acceleration information is determined based on the anti-intrusion direction, and the peak value feature of the three-axis acceleration information is extracted based on the intrusion weight corresponding to each axis, to obtain the transportation intrusion feature of the folding conveying belt; the transportation deviation trend of the three-axis acceleration information is extracted based on the transportation weight corresponding to each axis, to obtain the transportation deviation trend of the folding conveying belt; the railway ground vibration signal is obtained, the folding conveying belt is judged based on the transportation deviation trend and the transportation intrusion feature, and the anti-intrusion result is sent to the conveying belt control center, the anti-intrusion judgment can be made based on the deviation trend and the intrusion feature in the conveying belt transportation, and the active anti-intrusion in the transportation process is realized.

The invention relates to the technical field of ground vibration prevention, and discloses a steel plate and base combined micro-vibration prevention base which is of an up-down composite laminated structure and comprises a stainless steel panel layer and a concrete base layer from top to bottom. The stainless steel panel layer and the concrete base layer are rigidly connected through an anchoring system pre-buried in concrete to form an integral stress unit; and the upper surface of the stainless steel panel layer is constructed into an integrated composite functional surface comprising a plurality of mounting planes with different heights. The stainless steel panel is used for replacing a traditional epoxy self-leveling coating to serve as an equipment installation face, stainless steel materials are high in inherent rigidity and good in toughness, intrinsic brittleness of epoxy materials is avoided, and the risk of brittle cracking of the surface due to loads or temperature difference or impact is fundamentally eliminated.

The invention discloses energy dissipation and shock absorption swing type shock absorption equipment for a transformer substation, and relates to the technical field of electrical element fixing devices. The invention provides transformer substation energy dissipation and shock absorption swing type shock absorption equipment with a good fixing effect. The transformer substation energy dissipation and shock absorption swing type shock absorption equipment comprises a mounting plate and the like, the mounting plate is clamped with a supporting plate, the mounting plate is fixedly connected with paired swing type shock absorbers, a connecting plate is fixedly connected between the paired swing type shock absorbers, the connecting plate is fixedly connected with a transformer substation, and an inserting mechanism is arranged on the mounting plate. By means of the pendulum shock absorber, the first top plate and other components, the shock absorption effect on the transformer substation can be achieved, the energy dissipation and shock absorption pendulum type shock absorption equipment can be reinforced and fixed in soil by increasing the contact area between the equipment and the soil, and it is avoided as much as possible that when an earthquake occurs, the equipment cannot be damaged. Due to the fact that physical characteristics of soil or a foundation are changed due to vibration of the ground, the energy dissipation and shock absorption swing type shock absorption equipment sinks and is damaged, the original shock absorption capacity of the equipment is lost, and the fixing stability of the energy dissipation and shock absorption swing type shock absorption equipment of the transformer substation is improved.

This invention provides a vibration-damping and noise-reducing track structure for RGV (Remotely Resistant Vehicle). The RGV vibration-damping and noise-reducing track structure includes: a vibration-damping base; two tracks, which are mounted on top of the vibration-damping base via multiple sets of fixing brackets. Each set of fixing brackets has fixing bolts installed on its top. The vibration-damping base includes a support structure, a vibration-damping structure, and a wear-resistant structure. The wear-resistant structure is installed between the support structure and the wear-resistant structure, and the vibration-damping structure is a rubber damping pad; filling openings are located at both ends of the tracks, and the interior of the filling openings is filled with a filling structure, which is made of foam plastic. Each track has a sliding opening on its top. The vibration-damping and noise-reducing track structure for RGV provided by this invention can effectively isolate vibration transmission between the track and the foundation, reducing ground vibration and noise propagation, reducing ground vibration amplitude by 30%-40%. Simultaneously, the filling structure can absorb noise, improving the noise reduction effect.

The invention belongs to the technical field of electrical equipment shock prevention, and discloses a multifunctional control cabinet which comprises a cabinet body. An intelligent display component; an anti-vibration assembly; a heat dissipation assembly; an intelligent control assembly and a recovery assembly. By installing the recovery assembly, when the equipment encounters ground vibration, a frame can move on the top plane of a rectangular plate, four U-shaped telescopic rods can swing and stretch out and draw back along with the frame, after the U-shaped telescopic rods touch rubber blocks connected through third springs in long grooves, the stroke of the third springs can be compressed, then recovery is conducted, and the operation is repeated, so that the equipment is recovered. After vibration is finished, two motors are started to drive scattered clockwork springs to be gradually tightened, the frame is pulled to the center of the top of the rectangular plate again through the telescopic and hinging effects of two sets of second telescopic rods, and the problem that after traditional damping equipment works, vibration force on a plane is reduced is solved. And the whole power distribution control cabinet cannot be restored to the original position, so that the problems of cabinet body extrusion, grounding failure and the like can be caused.

The invention relates to the technical field of seven-stringed plucked instrument auxiliary devices, in particular to a novel seven-stringed plucked instrument base which comprises a base plate, brass foot assemblies are fixedly installed at the four corners of the bottom of the base plate, a plucked instrument body base is placed at the top of the base plate, each brass foot assembly comprises an installation sleeve, and a supporting base is installed at the bottom of each installation sleeve in a threaded mode. A connecting base is installed at the bottom of the supporting base in a threaded mode, a vibration isolation pad is embedded in the bottom of the connecting base, and an inner cavity of the bottom of the installation sleeve is provided with an inner thread. According to the supporting structure of the high-purity brass foot, on one hand, vibration coupling with the guqin is avoided through stable own frequency, on the other hand, the contact area between the guqin body base and the ground is reduced, transmission of ground vibration to the base is reduced, external interference is further reduced, and meanwhile the brass foot meeting the vibration isolation requirement can be selected in different ground scenes; ground vibration is prevented from reversely interfering with Guqin vibration, and the application scene of the base is further widened.

The utility model belongs to the technical field of hydraulic engineering plant structure vibration monitoring, and particularly provides a hydraulic engineering plant structure movable vibration measuring device which comprises a carrying vehicle body, a rotary vibration isolation mechanism is arranged on the carrying vehicle body, a support is arranged on the rotary vibration isolation mechanism, and a laser Doppler scanning vibration measuring instrument is installed on the support. The rotary vibration isolation mechanism comprises a lower shell and an upper shell, an elastic supporting body is arranged between the lower shell and the upper shell, a rotary motor is arranged on the upper shell, the output end of the rotary motor is connected with a rotary platform, and the rotary platform is connected with the support. According to the device, comprehensive coverage of plant structure vibration monitoring is realized, and interference of ground vibration noise on vibration measurement can be reduced.

This invention belongs to the field of structural dynamics testing and modal analysis technology, and provides a physical / mathematical integrated experimental modal analysis method, system, equipment, and medium. The method includes: applying preliminary excitation and using the phase separation method to obtain preliminary modal parameters containing mode shapes; constructing a mode shape matrix based on the mode shapes and optimizing the position and number of exciters to ensure that the modal participation values ​​of all modes of interest are not lower than a preset threshold; performing refined excitation according to the optimized scheme, locking the resonance state using the phase resonance method, and obtaining the final modal parameters. This invention effectively solves the problems of blind excitation point placement, modal confusion, and mode omission by coordinating three stages: phase separation initial screening, mode shape-driven excitation optimization, and phase resonance fine measurement. It significantly improves the integrity, accuracy, and efficiency of modal testing of large structures and reduces experimental safety risks. It is applicable to ground vibration tests of complex structures such as aircraft, spacecraft, and bridges.