39 results about "Field shaping" patented technology

A method for modeling acoustics in a delimited area, i.e., a computer-implemented method of modeling acoustics of an object as a numerical simulation model to determine field variables within a delimited control volume, the method comprising: (a) providing a coordinate system mapping positions in the control volume (b) providing a geometric specification of a sound source in the control volume based on the coordinate system. The objective of the invention is to improve the efficiency of numerical modeling of a transient (vibration) acoustic wave propagation phenomenon in a boundary-free domain. Additional steps are proposed: (c) constructing a convex shape around a sound source using a fast convex hull algorithm (d) stretching an infinite element starting from the convex shape (e) constructing a field shape function (g) using auxiliary coordinates by mapping radial coordinates of a coordinate system to auxiliary coordinates extending from the convex shape to the infinite element to transform the coordinate system into a field variable coordinate system (f1) Determining field variables by solving a numerical simulation model provides a computer system for simulating a system by applying a computer-implemented method.

A computer-implemented method for modeling acoustics of an object as a numerical simulation model in an unbounded domain to determine a field variable within a control volume of the unbounded domain includes providing a coordinate system mapping positions in the control volume. A geometrical specification of a sound source is provided in the control volume based on the coordinate system. To improve efficiency of numerically modelling transient acoustics wave propagation phenomena in unbounded domains, a convex shape is constructed around the sound source using Quickhull algorithm, infinite elements are extruded starting from the convex shape, and the coordinate system is transformed into a field variable coordinate system by mapping a radial coordinate of the coordinate system to an auxiliary coordinate extending from the convex shape to the infinite elements. Field shape functions are constructed using the auxiliary coordinate, and the field variable is determined by solving the numerical simulation model.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and / or replaceable components, such as removable field shaping units and / or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.

The invention provides a method for processing a micro-channel in glass by femtosecond laser, and belongs to the technical field of laser application, and the method comprises the following steps: carrying out polishing pretreatment, ultrasonic cleaning and drying treatment on a glass material to be processed to obtain a clean glass material with a polished surface; the femtosecond laser is led to the position above the surface of the glass material through a plurality of reflection lenses, and the femtosecond laser is vertically focused in the glass material through a focusing objective lens; the femtosecond laser is treated by utilizing an ultrasonic solution auxiliary means and a time domain shaping device, so that the femtosecond laser is used for preparing a microchannel and a modified region in the glass material; and immersing the glass material with the micro-channel into a KOH solution for etching to obtain a glass sample with a large-length micro-channel. According to the method, femtosecond laser light field shaping and ultrasonic-assisted coordinated regulation and control of parameters are adopted, chemical etching is combined, the machining length and quality of the micro-channel in the glass are effectively improved, and the problems that in the traditional manufacturing process of the micro-channel in the glass, the machining length is limited, and the wall quality of the micro-channel is poor are effectively solved.

Embodiments provided herein include systems and methods for location-based field shaping. One embodiment of a system includes a materials handling vehicle and a computing device that are configured to receive location data via at least one of the plurality of transceiver anchors, receive sensor data from at least one sensor related to the characteristic of operation of the materials handling vehicle, and determine a first location of the materials handling vehicle in the covered environment. Some embodiments may be configured to determine a vector of movement of the materials handling vehicle, determine a shaped detection field for the materials handling vehicle from the vector of movement, and detect an object that encroaches on the shaped detection field. Some embodiments may be configured to send information to the materials handling vehicle to alter operation of the materials handling vehicle to reduce a likelihood of collision with the object.

Disclosed herein is a stellarator comprising two sets of coils, namely a set of encircling coils which encircle the plasma axis, and a set of shaping coils which do not encircle any other coil or the plasma. In some embodiments, the encircling coils include a structural element to maintain their shape under magnetic forces. In some embodiments, the shaping coils are mounted onto one or more structural elements which, together with the shaping coils, constitute a field shaping unit. Also disclosed is a controller which may modify the electrical current flowing in one or more subsets of the coils in order to achieve target plasma parameters. Also disclosed is a method of designing a set of shaping coils by discretizing a surface dipole or current potential distribution.

The present invention relates to a flow field observation device and method for a static pressure air flotation mechanism, the flow field observation device comprises a workbench, a support and a guide body; the guide body is fixed to the workbench through the support and is in a stationary state, and there is a gap between the guide body and the workbench in the vertical direction; the guide body comprises an abutment portion and a support portion, the abutment portion is used to closely adhere to a side surface of the air flotation mechanism having a throttling structure, the throttling structure is filled with a tracer medium, and the support portion and the abutment portion are arranged oppositely; an observation area connecting the support portion and the abutment portion is arranged inside the guide body, and the observation area, the support portion and the abutment portion are made of the same material and have a light transmittance greater than 85%; the present invention converts an observation channel from an air flotation slider in a dynamic process to a guide body in a stationary state, and directly observes the flow field morphology, streamline state and spatial distribution of the flow field within the air film support range under different working conditions or boundary conditions in real time through the highly transparent guide body, so as to facilitate the grasp of the air film characteristics.

A high-voltage generator device is provided comprising an electric field shaper for shaping an electric field, in particular for a high-voltage generator. The electric field shaper comprising at least one field shaping unit which has a field shaping element. The field shaping element comprises a non-conductive body, in particular a plastic body, and an electrically conductive coating that is arranged on the non-conductive body.

The invention discloses a Fresnel volume three-dimensional tomography method with priori knowledge correction. The method comprises the following steps: preprocessing experimental data to obtain a test time propagation table; then building a grid model, and writing the initial slowness field and coordinates of the transmitting point and the receiving point; performing tomographic forward modeling, and calculating tomographic forward modeling travel time, ray paths, Fresnel body ranges and normalized weight factors of each transmitting-receiving pair; and comparing a test result with a forward modeling result, if an error is greater than a limit value, entering an inversion iteration step, carrying out first correction on the slowness field by adopting an SIRT algorithm and a back projection algorithm, carrying out second correction on the slowness field according to a priori slowness field shape parameter, and carrying out forward modeling calculation on the obtained slowness field again until the error is less than the limit value. According to the method, tomography inversion of the three-dimensional space shear wave velocity is realized, the space coverage rate of rays is improved based on the Fresnel volume method, and the tomography result is corrected in combination with prior knowledge, so that the inversion result is more reliable.

The invention provides a pulse laser-assisted nondestructive transfer method for a fine structure of a flexible substrate. The method comprises the following steps: firstly, preparing the fine structure to be transferred on a hard substrate; then, the binding force between the to-be-transferred structure and the flexible substrate is adjusted through interface modification; then irradiating the hard substrate-to-be-transferred fine structure interface by using pulse laser subjected to spatial light field shaping, and mildly weakening the binding force between the to-be-transferred structure and the hard substrate under the condition that the to-be-transferred structure is not damaged by ablation or decomposition; and finally, the flexible film is uncovered, and the to-be-transferred structure in the irradiated area is transferred to the flexible film without damage. According to the method, a complex technological process in a wet transfer method and a sacrificial layer transfer method is avoided, no obvious thermal, mechanical or chemical damage is caused to the structure, the structures such as a multi-layer composite film and an ultrathin film with a large width-to-thickness ratio can be selectively transferred to a flexible film in one step with high technological flexibility, and the transfer efficiency and the material adaptability are effectively improved.

A transistor device is disclosed. A transistor device comprises a semiconductor body (100) and a plurality of transistor cells (1). Each transistor element comprises a drift region (11) of a first doping type and a source region (13); a body region (12) of a second doping type complementary to the first doping type; a field shaping region (31) of a second doping type connected to the source node (S); and a gate electrode (21) connected to the gate node (G). The gate electrode (21) is arranged in a trench (23) extending from the first surface (101) into the semiconductor body (100), the gate electrode (21) being dielectrically insulated from the body region (12) by a gate dielectric (22), at least part of the gate electrode (21) being dielectrically insulated from the drift region (11) by a field dielectric (32), the field shaping region (31) adjoining the trench (23), and the field dielectric (32) comprising a high-k dielectric.

A charged particle inspection system may include a shielding plate having an aperture or more than one aperture, for example, to permit additional inspection by an additional instrument requiring a line of sight to the area of interest. A field shaping element, such as a window element or a raised rim, is placed at the aperture to prevent or reduce a component of an electric field.

The application discloses a self-leveling air gap equalization and multi-cavity stable voltage ultra-low disturbance air cavity system and a control method, and belongs to the field of aircraft control and ground simulation. The system comprises an outer shaft air floating sleeve, an inner shaft movement sleeve, a lifting device, a surrounding air gap monitoring device, a distributed air pressure sensor array and an air path control board card; an automatic air gap pressure difference elimination is realized by adopting a surrounding communication air path, and a partitioned air supply and a feedforward pressure field shaping are matched, and a constant air cavity volume is maintained by the synchronous lifting device to weaken the hysteresis effect. The control method relies on a neural network offline training to build a compensation model, and realizes closed loop stable voltage and disturbance suppression by adopting a feedforward neural backstepping control. The application can effectively improve the precision, stability and dynamic response of vertical microgravity simulation, and solves the multi-source disturbance problem caused by air gap loss, air supply and exhaust coupling and hysteresis feedback of a traditional pneumatic compensation system.

The invention discloses an ultrafast laser efficient patterning photoetching system and method. The ultrafast laser efficient patterning photoetching system comprises an ultrafast laser, a laser adjusting assembly, a space light field shaping device and a machining platform. The ultrafast laser is suitable for emitting ultrafast laser beams; the laser adjusting assembly is suitable for adjusting parameters of the ultrafast laser beam; the spatial light field shaping device is suitable for adjusting the ultrafast laser beam into a specific shape; the processing platform is suitable for bearing a to-be-processed sample; the ultrafast laser beam, the laser adjusting assembly and the spatial light field shaping device are arranged along the propagation direction of the ultrafast laser beam; and the shaped ultrafast laser beam is irradiated on a sample to be processed to carry out photoetching processing. According to the method, a high-precision micro-nano pattern structure is obtained on the photoresist sample through single-time in-situ exposure processing, the accuracy and the consistency of the processed pattern are good, and the processing efficiency is high.

The present invention provides a method for optimizing the position of double-layer grating blades. The optimization method obtains the position of each blade on each side of the main collimation layer corresponding to the current radiation field by constructing the mapping relationship between the radiation field and the position of the blades on the main collimation layer. Then, according to the position difference between the position of each blade on each side of the auxiliary collimation layer and the position of each blade on each side of the main collimation layer deviating from the central axis, based on the actual radiation source situation and the relative blade spacing on both sides of the main collimation layer, a sequence of influencing factors for the radiation field size of each blade on each side of the auxiliary collimation layer is established. The position of the blades on the auxiliary collimation layer is optimized through the influencing factors, so as to optimize the target area dose, improve the treatment accuracy, and improve the gain of radiotherapy.

A fully programmable laser field shaping apparatus that can configure a beam of laser pulses in both shape and time to generate laser pulses with varying spatio-temporal profiles for adaptive nonlinear optical propagation. The laser field shaping scheme in accordance with the present invention, Adaptive Spatio-Temporal Optical Pulse Shaper (A-STOPS), utilizes dispersive elements and a programmable spatial varying optical element (e.g. deformable mirror, spatial light modulator, etc.) to impose spatial variations on each frequency component of a laser pulse. Each frequency component maps directly to a temporal slice within a chirped laser pulse. The result is the ability to generate complex spatio-temporal variation on a laser pulse with wide ranging applications in linear and nonlinear optics.

The present invention belongs to the field of optical system surface shape detection, and specifically is a camera-based objective lens surface shape detection system and device, comprising an optical path device building module, a camera integration module, an in-axis field of view measurement module, an out-axis field of view measurement module, a detection result output module and a cloud database. The system first builds an optical path detection device to carry out preparatory work before the detection of an objective lens to be tested, implements optical path calibration work in the camera integrated optical path detection device, obtains the original wavefront aberration corresponding to the camera optical path calibration, then places the objective lens to be tested into the optical path detection device to carry out wavefront aberration measurement, obtains the wavefront aberration corresponding to the in-axis field of view and out-axis field of view of the objective lens to be tested, accurately outputs the surface shape detection result of the objective lens to be tested to effectively feedback the abnormal influence of the surface shape of the objective lens to be tested on the imaging quality, and not only has high applicability and reliability, but also significantly improves the accuracy and efficiency of objective lens detection.

To provide a farm field work machine capable of specifying a place where work materials are to be replenished easily and capable of performing pulling-over traveling for pulling over a travelling vehicle body to a levee easily.SOLUTION: A farm field work machine includes: a satellite positioning unit capable of setting a specific side consisting of contour sides of a farm field as a material replenishing side for an agricultural material to be consumed, and capable of detecting a travelling machine body using a navigation satellite; a work device capable of performing work for the farm field; and a farm field shape calculation unit capable of calculating a farm field shape on the basis of a travelling track of the travelling machine body acquired by the detection over time of the position of the travelling machine body while the travelling machine body is travelling around. A work travelling control unit is capable of performing pulling-over travelling for pulling over the travelling machine body to a levee for replenishing the agricultural material from a starting end or a terminal region of a turning route, in which replenishing automatic travelling control for pulling over the traveling machine body to the material replenishing side or remote operation travelling control for pulling over the traveling machine body to the material replenishing side by a manual operation through an operation of a remote operation tool is executed.SELECTED DRAWING: Figure 4

The application provides a kind of laser equipment, laser equipment includes first waveguide, second waveguide group and laser, second waveguide group includes third waveguide and fourth waveguide respectively arranged in the two sides of first waveguide;Laser includes: first ridge structure and second ridge structure;First ridge structure is excited to emit laser by applying driving current to first ridge structure, and the excitation mode of laser is single lobe far field base transverse mode;First ridge structure is excited to emit laser by applying excitation to first ridge structure and second ridge structure, and the excitation mode of laser is double lobe far field single high order mode.In this way, the laser can be switched between single lobe far field base transverse mode and double lobe far field single high order mode by changing driving current, so as to control the far field shape of laser, quickly switch single lobe far field and double lobe far field, which can ensure high power output of laser and narrow linewidth characteristics of laser.

A method may include receiving, using a processing unit, a request to calculate an estimated duration of an agricultural job, the request including an agricultural job identifier, issuing, using the processing unit, a data retrieval command using the agricultural job identifier, receiving field characteristics associated with a field, the field characteristics including a field shape value and an area of the field, encoding, using the processing unit, the field characteristics into a data structure configured to be input into a job duration machine learning model, executing, using the processing unit, the job duration machine learning model using the data structure, after executing the job duration machine learning model, accessing an output of the job duration machine learning model, the output associated with the estimated duration of the agricultural job, and transmitting, using the processing unit, the estimated duration and the job identifier to an agricultural job scheduling system.

This invention discloses a self-leveling air gap equalization and multi-cavity pressure-stabilized ultra-low disturbance air cavity system and control method, belonging to the field of aircraft control and ground simulation. The system includes an outer axis air-bearing sleeve, an inner axis moving sleeve, a lifting device, a surrounding air gap monitoring device, a distributed air pressure sensor array, and an air path control board. A surrounding interconnected air path is used to automatically eliminate air gap pressure difference. Combined with zoned air supply and feedforward pressure field shaping, a synchronous lifting device maintains a constant air cavity volume to reduce hysteresis effects. The control method relies on offline training of a neural network to construct a compensation model and uses feedforward neural backstepping control to achieve closed-loop pressure stabilization and disturbance suppression. This invention can effectively improve the accuracy, stability, and dynamic response of vertical microgravity simulation, solving the multi-source disturbance problems caused by air gap imbalance, supply and exhaust coupling, and hysteresis feedback in traditional aerodynamic compensation systems.

A feedback system that identifies characteristics of an object and utilizes the characteristics to initiate and adjust a field applied to the object is provided. The system includes an array of array phase elements made of metamaterials that allow precise shaping of the field to be applied to a particular portion of an object based on characteristics of the object, including location and thickness of the object. Sensors are utilized during supercooling to monitor a condition of the object being supercooled. Specifically, characteristics of the object are measured at different points, areas, or volumes on the object and the measurements are used to determine whether supercooling (or another desired result) is being achieved or whether the object is starting to freeze. Based on the measurements, parameters of the field can be adjusted to ensure supercooling of the object without freezing.

The present disclosure relates to a star imitator or an assembly comprising a star imitator that includes a removable and / or replaceable component, such as a removable field shaping unit and / or a removable shaping coil. In some embodiments, the star imitator of the present disclosure includes a toroidal sector, the toroidal sector including one or more removable field shaping units.

A localizer system is disclosed. The localizer system can be incorporated into a navigation system for tracking a tracking device. Generally, the localizer can include an array of transmit coils and a field shaping assembly.

This utility model relates to an antenna ring for a microwave plasma deposition apparatus, comprising a ring body located between a resonant waveguide cavity and a reaction chamber, and an annular mounting bracket and a pressure ring that mate with an aluminum ring. The ring body is a conductive and corrosion-resistant metal structure, with its circumferentially continuous mesh satisfying the following: mesh diameter 0.5–6 mm (preferably 1–5 mm), aperture ratio 40%–80%, wire diameter 0.05–1.0 mm (preferably 0.1–0.8 mm), and mesh shape circular or polygonal. The ring body is held between the annular mounting bracket and the aluminum ring by the pressure ring and electrically connected to the cavity; a solid metal reflective strip (a hole-free area, 3–20 mm wide) is provided on the outer edge of the ring to enhance microwave reflection and field shaping; the axial distance between the ring and the quartz isolation plate is 2–20 mm. This structure achieves multi-point microwave radiation, uniform reflection, and Faraday shielding, and is easy to disassemble, maintain, and reliably grounded, making it suitable for large-area thin-film deposition equipment with substrates ≥8 inches.

The x-ray tube may have a stable electron beam, thereby producing a stable x-ray beam, reducing arc failure of the x-ray tube, and reducing shielding quality. The x-ray tube may include a cathode and an anode that are electrically insulated from each other by a first housing and a second housing. The blocking disk may be located at or near a junction of the first and second housings. A field shaping cup may extend into a hollow region of the second housing. The low Z layer may be located on a side of the blocking disk facing the electron emitter.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and / or replaceable components, such as removable field shaping units and / or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and / or replaceable components, such as removable field shaping units and / or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.

Disclosed herein is a stellarator comprising two sets of coils, namely a set of encircling coils which encircle the plasma axis, and a set of shaping coils which do not encircle any other coil or the plasma. In some embodiments, the encircling coils include a structural element to maintain their shape under magnetic forces. In some embodiments, the shaping coils are mounted onto one or more structural elements which, together with the shaping coils, constitute a field shaping unit. Also disclosed is a controller which may modify the electrical current flowing in one or more subsets of the coils in order to achieve target plasma parameters. Also disclosed is a method of designing a set of shaping coils by discretizing a surface dipole or current potential distribution.

The invention discloses a coupling packaging method based on a laser direct-writing three-dimensional optical chip, and the method achieves the coupling packaging of a first device and a second device through the laser direct-writing three-dimensional optical chip, the first device is a planar waveguide, and the second device is an optical fiber system. Or both the first device and the second device are optical fiber systems, and the method comprises the following steps: selecting a sample, determining mode field shapes, sizes and refractive index distribution of to-be-butted end surfaces of the first device and the second device, and testing a damage threshold value of the sample; determining the size, structure and track arrangement of a waveguide in the three-dimensional optical chip according to the mode field shape, size and refractive index distribution of the to-be-butted end surfaces of the first device and the second device; the sample is cleaned, the cleaned sample is fixed and leveled, and a laser direct writing light path is calibrated; the femtosecond laser directly writes the three-dimensional optical chip; the three-dimensional optical chip is polished; and carrying out coupling packaging on the three-dimensional optical chip, the first device and the second device.