462 results about "Beam system" patented technology

The present application relates to the technical field of bridge construction, and in particular to a railway box girder drop system, including a longitudinal deviation correction mechanism, a transverse deviation correction mechanism, and a beam drop mechanism; a plurality of longitudinal deviation correction mechanisms are symmetrically distributed along the longitudinal direction of the bridge between the piers of the box girder to be dropped; a plurality of transverse deviation correction mechanisms are symmetrically distributed along the transverse direction of the bridge between the piers of the box girder to be dropped; the longitudinal deviation correction mechanism includes a first temporary pier, a first slide, a first slide shoe, and a plurality of first jacking devices arranged in sequence from bottom to top, the first slide is fixedly connected to the first temporary pier, and a plurality of first jacking devices are fixed along the transverse direction of the bridge and symmetrically distributed on the first slide shoe; the transverse deviation correction mechanism includes a second temporary pier, a second slide, a second slide shoe, and a plurality of second jacking devices arranged in sequence from bottom to top, the second slide is fixedly connected to the second temporary pier, and a plurality of second jacking devices are fixed along the longitudinal direction of the bridge and symmetrically distributed on the second slide shoe. Through the above arrangement, the accuracy of the box girder drop position can be improved.

A multi-beam particle beam system 1 with improved resolution and higher acquisition speed is revealed. For this purpose, an electrostatic booster lens 112 is arranged in an upper focal plane of the objective lens 102 at the level of the crossing region of the primary particle beams. The electrostatic booster lens 112 selectively increases the kinetic energy of the primary beams 3 significantly in the crossing region 108, thereby reducing the Coulomb interaction between the charged particles.

The invention discloses a compact multipurpose proton beam system, belongs to the field of radiotherapy, and solves the problem that a treatment terminal of an existing proton beam system is single in type and not compact enough. The superconducting isochronous cyclotron system is connected to the two-way selection system through the beam adjusting system, the two-way selection system comprises a two-way dipole magnet and two branch selection systems, and the two branch selection systems are connected to the rear end of the two-way dipole magnet in parallel. The system also comprises a beam transport system, and the beam transport system is composed of a first treatment terminal section, a second treatment terminal section and a third treatment terminal section. One branch selection system is connected to the fixed experiment beam transport system through the first treatment terminal section, the other branch selection system is connected to the fixed pen-shaped beam transport system through the second treatment terminal section, the third treatment terminal section is a branch of the second treatment terminal section, and the third treatment terminal section is connected to the rotary beam transport system. According to the invention, the beam irradiation of the multi-type and multi-purpose treatment terminal is realized by utilizing the design of a bidirectional selection system.

The invention provides a three-coordinate radar reverse modeling-based penetration aircraft detected probability calculation method, relates to the technical field of three-coordinate radar reverse modeling, and provides a multipath propagation factor dynamic correction model and an adaptive clutter suppression method through reverse modeling ship-borne radar power distribution characteristics and an environment coupling effect. And the calculation precision of the detection probability in a complex electromagnetic environment is improved. Based on a directional diagram propagation factor quantization radar wave attenuation law, and in combination with a sub-beam system constant inversion technology, the dependence of a traditional model on confidential parameters is broken through, and high-reliability simulation based on public parameters is realized. Through pre-generation of a typical scene database and cubic spline interpolation, dynamic response of a penetration strategy is supported, a multi-radar networking cooperative detection correction model is introduced, and a global detection blind area is identified.

The invention relates to the technical field of performance lighting equipment, in particular to a double-shaft omni-directional steering unmanned aerial vehicle laser lamp and a control method thereof. The unmanned aerial vehicle laser lamp structure comprises a transmission device and a motor, the unmanned aerial vehicle laser lamp structure can rotate by 360 degrees along the X axis and the Y axis, magnetic fluid sealing rings are adopted for packaging, high waterproofness can be achieved, the unmanned aerial vehicle laser lamp is hung below a four-axis or six-axis unmanned aerial vehicle, a space light beam system capable of freely rotating is formed, all-dimensional irradiation is achieved, and the rich three-dimensional light beam effect is created. In addition, the flight control system of the unmanned aerial vehicle can be compatible with a small unmanned aerial vehicle performance control system, so that the unmanned aerial vehicle can be accurately integrated with other unmanned aerial vehicles and cooperate with formation performance. The visual level of unmanned aerial vehicle light show is improved, compared with traditional unmanned aerial vehicle laser equipment, the system can flexibly adjust the height and the angle, the defect that existing unmanned aerial vehicle air show lacks space light beams is effectively overcome, and a more dynamic and immersive light and shadow effect can be constructed in the air in combination with fine control.

The invention discloses an optical delay line in a Fizeau type optical synthetic aperture imaging system. The Fizeau type optical synthetic aperture imaging system comprises a simulation light source subsystem, a sub-aperture variable baseline subsystem, a light combination imaging delay line, a light combination imaging subsystem, a light combination imaging variable baseline subsystem, a first optical path detection subsystem, a second optical path detection subsystem and the like. Wherein optical delay lines in the first optical path detection subsystem and the second optical path detection subsystem are consistent in structure, composition, function and performance, are symmetrically arranged on two sides of the system, and form an angle of + 49.1 degrees / -49.1 degrees with the horizontal plane; the optical delay line is applied to an optical path detection subsystem in a Fizeau type optical synthetic aperture imaging system composed of four sub-apertures, and is obliquely arranged relative to the horizontal plane, so that each optical path detection telescope can measure three optical path detection light beams at the same time; two sets of symmetrically arranged optical path detection subsystems are set up in the system, so that four-beam optical path difference detection can be realized, and the detection efficiency is high.

The invention discloses a flexible finger friction contact collision dynamics simulation method based on an absolute node coordinate method, which comprises the following steps: simplifying a finger of a flexible manipulator into a connecting rod system, taking a tail end knuckle as a flexible beam for consideration, and carrying out unit division on the flexible beam system based on the absolute node coordinate method; a contact collision process is described by using an additional constraint method, meanwhile, switching of a viscous state and a sliding state is considered, a friction-containing flexible finger contact collision dynamic model is established, and a dynamic equation of a system is solved by adopting a double-circulation implicit integral algorithm; and obtaining a curve graph that the flexible finger tail end displacement changes along with time and the finger tail end contact force changes along with time. The invention provides a new frictional contact collision dynamic model for a flexible manipulator system, and provides more perfect data information and image information for researchers in the field.

The invention relates to a multi-beam particle beam system (1) having a better resolution and a faster recording speed. To this end, an electrostatic booster lens (112) is arranged in an upper focal plane of the objective lens (102) level with the crossover region of the primary particle beams. The electrostatic booster lens (112) is used to significantly increase the kinetic energy of the primary beams (3) in the crossover region (108) in a targeted manner, which is why the Coulomb interaction between the charged particles is reduced.

The invention relates to a multi-beam interference avoidance method and system based on multi-agent reinforcement learning. The method comprises the following steps: S1, establishing an initial system model diagram according to a relationship between multiple beams generated by a satellite and a ground cell; s2, analyzing interference among multiple beams; s3, generating a service arrival model according to the ground state information; s4, constructing an M / G / 1 queuing model, and inputting an output result of the model in the S3 into the queuing model; s5, multi-beam context learning is carried out; s6, converting a beam interference avoidance problem into a multi-agent depth deterministic strategy gradient algorithm learning problem, and performing conversion definition of a Markov decision process problem; and S7, performing reinforcement learning of the MADDPG algorithm according to the conversion definition of the problem and the MADDPG algorithm, and planning an optimal strategy of satellite beam scheduling according to the maximum probability action value output by the plurality of beams of the satellite. According to the method, the problem that interference exists among multiple beams in an existing low-orbit satellite multi-beam system is solved, the method is more reasonable and flexible, interference can be effectively avoided, and the overall performance of the system is improved.

Additive manufacturing systems and associated methods are disclosed herein. In some embodiments, the additive manufacturing system includes a build chamber that has an active build region, an energy beam system positioned to direct energy beams toward the active build area, and a controller operably coupled to the energy beam system. During an additive manufacturing process, the controller can control the energy beam system to execute a hybrid sintering process. For example, for a first region of a planned build object, the controller can operate the energy beam system in a continuous wave mode to generate a first energy beam to sinter powder in the first region. Then, for a second region, the controller can operate the energy beam system in a pulsed mode to generate a second energy beam with to sinter the second region.

The invention relates to an electron beam melting-ultrasonic atomization pulverizing system and method, belongs to the technical field of preparation of metal powder materials, and solves the problems that in an existing metal powder preparation technology, high-melting-point metal powder is difficult to prepare, and due to medium introduction, the powder purity is low, the cost is high, the sphericity degree of the powder is low, and the particle size is uncontrollable. The electron beam melting-ultrasonic atomization pulverizing system comprises an electron beam system, a vacuum system, a cooling system, an ultrasonic pulverizing system and a powder collecting system. By means of the system, powder preparation under the high-vacuum condition can be achieved, medium introduction is avoided, impurity removal is promoted, and low-oxygen ultra-pure powder can be obtained easily; the energy density of electron beams is high, and preparation of high-melting-point metal powder can be successfully achieved; by means of ultrasonic atomization, the metal powder is high in sphericity degree, controllable in particle size and few in defect, and the method is particularly suitable for preparing ultrapure powder of refractory metal (such as W, Mo and Ta) and active metal (such as Ti, Nb, Co and V).

Embodiments of systems, devices, and methods relate to initiating beam transport for an accelerator system. An example method includes increasing a bias voltage of one or more electrodes of the accelerator system to a first voltage level and extracting a charged particle beam from a beam source such that the beam is transported through the accelerator system. The beam has a beam current at a first beam current level that results in a first transient voltage drop of the accelerator system within a threshold. The method further includes increasing the beam current at a rate that results in one or more subsequent transient voltage drops of the accelerator system until the accelerator system has reached nominal conditions. The one or more subsequent transient voltage drops are within the threshold. Another example method includes biasing one or more electrodes of an accelerator system to a voltage level and selectively extracting, according to a duty cycle function, a charged particle beam from a beam source such that the charged particle beam is transported through the accelerator system. The duty cycle function can be linear or non-linear and can include a frequency f. The duty cycle function can include a variable pulse duration such that the variable pulse duration increases over time with each selective extraction of the charged particle beam.

The invention provides a narrow gap welding device and method based on molten drop coaxial composite ring laser, and is suitable for high-precision narrow gap welding. The device comprises a welding wire melting system, an annular light beam system, a wire feeding system, a water cooling suite, a molten metal control assembly and a gas pressure system. The welding wire melting system heats a metal welding wire through an induction heating coil to generate molten drop jet flow, and the annular light beam system generates a molten pool. The molten drops vertically drop into a molten pool of the narrow-gap workpiece in a jet flow mode through the molten metal control assembly, and a high-quality welding seam is formed. The control system monitors the size of the gap in real time through the laser contour scanner and adjusts the electronic adjustable nozzle so as to control the size and flow of molten drops. The welding wire is melted through the induction heat source to generate molten drops, the problem of strong coupling between the welding wire and laser is successfully solved, heat input in the welding process is remarkably reduced, and therefore deformation and defects in narrow gap welding are reduced.

The invention discloses an extruder moving beam position tracking control method based on adaptive iterative learning, and belongs to the technical field of position control. An extruding machine moving beam position tracking control method based on adaptive iterative learning comprises the following steps that according to the physical property of a moving beam, the motion mode of the moving beam is analyzed, and a kinetic model of a nonlinear parameterized moving beam system is constructed; establishing a fuzzy model for an unknown part in the dynamic model, and determining a position tracking error system of the moving beam; based on a self-adaptive iterative learning control theory, designing a finite-time high-precision position tracking control strategy of the movable beam of the extruding machine; and analyzing the stability of the controller. The invention relates to an extruder moving beam position tracking control method based on self-adaptive iterative learning, which realizes finite time high-precision position tracking control of a moving beam by combining a Fourier series-fuzzy approximation method based on a self-adaptive iterative learning control theory.

An electron beam is directed at a workpiece on a stage with a first astigmatism applied. The electron beam reflected off the workpiece is detected and an image of the workpiece with the first astigmatism applied is generated. An autofocus model is applied to the image to determine a focus offset for the image with the autofocus model.

The invention relates to the technical field of underwater construction, and provides an underwater engineering precise construction method, system and equipment. The underwater engineering precise construction method comprises the steps that an expected effect model corresponding to an underwater construction area is obtained; in the construction process, a region current situation model of a monitoring region is collected through a multi-beam system, and the monitoring region comprises a construction region; determining whether the regional current situation model is matched with the expected effect model; under the condition that the regional current situation model is not matched with the expected effect model, determining an abnormal position; and generating construction abnormity prompt information based on the abnormal position. By the adoption of the technical scheme, the construction process can be monitored in real time, and when it is monitored that abnormity exists in the construction process, prompting is conducted in time so as to guide constructors to adjust the construction process, so that the accuracy of underwater construction can be improved, the efficiency of underwater construction can be improved, and the construction period is shortened. And the underwater construction cost is reduced.

The invention discloses a floating suspension type jacket high-pile wharf structure suitable for ultra-large water depth and a construction method, and belongs to the technical field of high-pile wharfs. The structure comprises a jacket, a pile foundation and an upper structure; the lower part of the upper structure is connected with a pile foundation; the jacket is installed on the lower end face of the upper structure and connected to the pile foundation. The upper structure comprises a sleeve box type pile cap, a cross beam, a longitudinal beam and a laminated panel; the sleeve box type pile cap is installed on the upper end face of the pile foundation. The longitudinal beam system is installed on the upper end face of the sleeve box type pile cap. The cross beams are mounted between the adjacent longitudinal beam systems; and the laminated panel is flatly laid on the surface layer of the upper structure. The structure adapts to a large-water-depth and large-flow-velocity environment by exerting the structural advantages of the structure, and the structure is small in underwater construction work amount, high in assembly degree, small in environmental influence, short in construction period and low in engineering investment.

System for performing chemical spectroscopy on samples from the scale of nanometers to millimeters or more with a multifunctional platform combining analytical and imaging techniques including dual beam photo-thermal spectroscopy with confocal microscopy, Raman spectroscopy, fluorescence detection, various vacuum analytical techniques and / or mass spectrometry. In embodiments described herein, the light beams of a dual-beam system are used for heating and sensing.

The utility model discloses a curtain lower beam system which comprises a U-shaped lower beam, two ends of the U-shaped lower beam are respectively provided with a lower beam end socket of an integrated structure, a cavity is arranged in the middle of the U-shaped lower beam, a balance rod is arranged in the cavity, the lower beam end sockets are connected with the U-shaped lower beam in a clamping mode, and the balance rod is connected with the lower beam end sockets. The outer surface of the U-shaped lower beam is coated with wrapping cloth. The lower beam end socket is directly matched with the balance rod, a round lower beam end socket is omitted, production cost can be saved, later assembling procedures are simplified, the wrapping cloth is arranged on the outer surface of the U-shaped lower beam, the color of the U-shaped lower beam is consistent with that of curtain fabric, and overall attractiveness is improved.

The invention provides an argon ion beam scanning electron microscope double-beam system and an in-situ sample analysis method, an electron optical lens barrel of the system generates a high-energy electron beam for scanning the surface of a sample for imaging; the ion optical lens cone generates a high-energy argon ion beam for sample surface polishing; the sample chamber is used for accommodating samples and providing a vacuum environment; the sample table is used for accurately controlling the position and angle of a sample; and the detector is used for collecting signals generated by interaction of the electron beam and the sample for imaging analysis. According to the invention, a sample transfer step is eliminated, so that the sample preparation and analysis efficiency is greatly improved; a millimeter-scale large-size sample can be treated, and a sample with a flat and smooth surface can be obtained; sample polishing and imaging are carried out in the same vacuum environment, so that sample pollution is reduced to the greatest extent, and the accuracy of an analysis result is improved; by combining argon ion beam polishing and scanning electron microscope imaging technologies, efficient, high-precision and in-situ analysis of the sample is realized, so that more comprehensive and more accurate microstructure information is obtained.

The invention relates to the technical field of building structure design, in particular to a building structure intelligent forward design system based on BIM and parameterization technologies. According to the technical scheme, a parameter-driven BIM initial model generator is included, a visual parameter input panel is created, a designer can conveniently set key parameters such as the number of layers, the layer height, the span and the function partition of a building, an intelligent algorithm is built in, a building mechanics knowledge base and classic case big data are combined, and a BIM initial model is generated; input parameters are quickly converted into a preliminary BIM building structure model, reasonable column grid arrangement, beam system model selection, model parameter association real-time linkage, modification at one position and automatic adaptation of related components are achieved, and an efficient forward design foundation is laid. The method has the advantages that the design efficiency can be remarkably improved, the cost can be remarkably reduced, the building structure performance can be remarkably improved, the cooperative work quality can be effectively improved, all professions can be matched more timely, and it is guaranteed that high-quality design results are produced.

The utility model discloses a magnet of a beam transmission system, the beam transmission system and a particle accelerator, relates to the technical field of beam transmission, and mainly aims to provide the magnet capable of better controlling beam envelope, beam emittance shape and track dispersion for the beam system. And the use requirements of a beam transmission system with special requirements are met. The main technical scheme of the utility model is as follows: the magnet of the beam transmission system comprises an annular iron core; the magnetic pole heads are arranged on the inner surface of the iron core and extend in the radial direction of the iron core, the number of the magnetic pole heads is at least ten, and the at least ten magnetic pole heads are arranged in the circumferential direction of the iron core at intervals; the number of the magnet exciting coils is at least ten, and each magnet exciting coil is wound outside the corresponding magnetic pole head; the power connection assemblies are arranged at the tail ends of wires of the excitation coils, the at least ten excitation coils are connected in series through the power connection assemblies, and the power connection assemblies are used for being connected with an external power source to supply power to the excitation coils.

An additive manufacturing machine includes an energy beam system configured to emit an energy beam utilized in an additive manufacturing process, and first and second optical elements utilized by, or defining a portion of, the energy beam system and / or an imaging system of the additive manufacturing machine. The imaging system monitors one or more operating parameters of the additive manufacturing process. A light source is configured to emit an assessment beam that follows an optical path incident upon the first and second optical elements. One or more light sensors detect a reflected beam that is either internally reflected by the first optical element or reflectively propagated between the first and second optical elements. A control system determines, based at least in part on assessment data comprising data from the one or more light sensors, whether at least one of the first and second optical elements exhibits an optical anomaly.

The utility model discloses a catwalk bearing cable anchoring and adjusting device which is composed of three sets of catwalk bearing cable anchoring and adjusting bodies which are identical and arranged side by side, and each set of catwalk bearing cable anchoring and adjusting body comprises a bearing cable anchoring embedded part, an anchoring device, an adjusting device and a bearing cable open type cable joint. Finish-rolled deformed steel bars in the adjusting device are connected with the anchoring distribution beam system. In the adjusting process, load is applied through the jack, force is transmitted to the rear anchoring distribution beam, the catwalk bearing cable is driven to move, the jack is adjusted to change the stress state of the bearing cable, then the functions of releasing and tightening the catwalk bearing cable are achieved, and the effect of adjusting the line type of the catwalk bearing cable is achieved. And the anchoring function is achieved by connecting the concrete beam and the catwalk bearing cable. Anchoring and adjusting construction of the catwalk bearing cable are conducted synchronously, the construction progress is accelerated, and the construction cost is reduced. The catwalk load-bearing cable can be rapidly and stably anchored and adjusted, and the catwalk load-bearing cable anchoring device is high in practicability and wide in applicability.

A multi-electron beam system that forms hundreds of beamlets can focus the beamlets, reduce Coulomb interaction effects, and improve resolutions of the beamlets. A Wien filter with electrostatic and magnetic deflection fields can separate the secondary electron beams from the primary electron beams and can correct the astigmatism and source energy dispersion blurs for all the beamlets simultaneously.

The invention relates to a nanometer photoetching method based on a focused ion beam-scanning electron microscope double-beam system, and relates to the technical field of etching processes, and the method comprises the following steps: providing a substrate; forming a glue layer on the substrate; forming a conductor layer on the adhesive layer; placing the substrate in a focused ion beam-scanning electron microscope double-beam system, determining a graphic window setting area through a scanning electron microscope, and etching the conductor layer in the graphic window setting area through a focused ion beam to form a graphic window; and performing an etching process by taking the conductor layer as a mask, and etching the adhesive layer through the pattern window until the substrate is exposed so as to form a first etching opening. Therefore, the accuracy of the graph is improved.

The cab comprises a cab structure and a beam system structure, the cab structure comprises a top cover assembly, a front air window assembly, a front wall assembly, a side wall assembly and a rear wall assembly, and the top cover assembly, the front air window assembly, the front wall assembly and the rear wall assembly are sequentially connected and define a vertical sealing structure; the side wall assembly comprises a left side wall assembly and a right side wall assembly which are arranged on the two sides of the vertical sealing structure. The beam system structure comprises a plurality of reinforcing beams, the middle of each reinforcing beam is sunken towards the interior of the cab structure to form a groove-shaped stabilizing part, and lap joint parts used for being connected with the cab structure are formed on the two sides of each reinforcing beam. Structural simplification treatment is carried out on a related special stress structure, the structure is simple, manufacturing and maintenance are convenient, and the advantages that the load distribution position is convenient to confirm, the landing posture is easy to adjust in the air-drop process, manufacturing is easy, and cost is low are achieved.

The present invention provides an optical power amplification system and a control method. The optical power amplification system includes: a beam system for providing independent first and second seed laser beams; an optical switch disposed on the transmission optical path of the second seed laser beam; an optical power amplifier disposed at the output end of the beam system; and an optical switch control device electrically connected to the optical power amplifier and the optical switch. Wherein, the optical power amplifier feeds back the output power of the first seed laser beam. When the output power is less than a predetermined value, the optical switch control device controls the optical switch to quickly turn on, and the second seed laser beam is transmitted into the optical power amplifier.

The invention relates to the application field of a negative neutral beam ion source system in a magnetic confinement nuclear fusion Tokamak device, in particular to a supporting and adjusting structure and method for a beam source of a negative neutral beam system in a fusion device. According to the technical scheme, the device comprises a beam source device and a stainless steel flat plate base located below the beam source device, and further comprises a welding corrugated pipe which is fixedly installed at one end of the beam source device and used for connecting the beam source device with a bunching vacuum chamber. The beam source three-dimensional space adjusting function is achieved through the characteristic that the welding corrugated pipe is small in rigidity, the position of the beam source can be accurately adjusted through the three-dimensional jacking jack, and therefore the position of a beam spot of a beam can be accurately adjusted, the anion beam spot can be kept at the center of a target, and the problem that the beam spot of an ion beam in a negative neutral beam system in a fusion device is difficult to adjust is solved. And an acting point is provided for the three-dimensional jacking jack through the arc-shaped supporting piece, stress concentration is reduced, point discharge is prevented, and safety in the high-voltage environment is guaranteed.

A municipal bridge green belt drainage structure is used for solving the drainage problem of green belts on municipal bridges and pedestrian and non-motor vehicle lanes, is arranged in an area defined by a main beam system, a pedestrian and non-motor vehicle lane system and a motor vehicle lane system and comprises a green belt drainage structure system. The green belt drainage structure system is sequentially provided with a cultivation and planting soil layer, first water filtering geotextile, a gravel layer, second water filtering geotextile and a green belt drainage pipe from top to bottom, and the green belt drainage pipe is arranged at the lowest position of the green belt in the vertical direction of the main beam system. The drainage structure of the municipal bridge green belt has the advantages that the drainage pipe of the green belt and the drainage pipe of the main beam are mutually independent, the drainage is smooth, and the drainage problem of the bridge green belt can be effectively solved.