1644results about How to "Achieve decoupling" patented technology

The invention discloses an active control device of vibration simulation for bending and torsional modes of space sailboards and a method. The device symmetrically sticks multi-chip bending mode piezoelectric actuators on front and rear faces of a flexible plate, a bending mode sensor is arranged at the position horizontally closing to a fixed end by 320-25mm of the flexible plate and on the longitudinal center line of the flexible plate, torsional mode actuators composed of a plurality of piezoelectric ceramic chips are antisymmetrically stuck on both faces of the flexible plate, and torsional mode sensors composed of a plurality of the piezoelectric ceramic chips are stuck on both faces of the flexible plate. The method operates an active vibration control strategy according to information of the bending mode and trosional mode sensed by a piezoelectric sensor, and then drives a voltage amplifier through piezo-electricity to respectively drive the piezoelectric actuators for controlling multimode vibrations of bending and torsion, thereby realizing the purpose of actively inhibiting the vibrations. The invention employs the optimum distribution of piezoelectric sensor chips and driving chips, and realizes decoupling of bending modes and torsional modes of flexible cantilever plates in inspection and drive control.

An on-orbit geometric calibration method of an optical remote sensing camera aims at a domestic satellite platform and load design characteristics to build a strict imaging model, and uses an internal and external orientation element combination modeling method for geometric calibration treatment. The method is based on the strict imaging model for the geometric calibration treatment, and model parameters have clear physical meanings; 2) simultaneous decoupling of internal and external orientation elements can be realized by internal and external orientation element combination modeling; 3) the model can be used for a multiple linear array camera and multi-camera combination calibration, and has a strong universality; 4) according to the method, various factors causing image distortion in an imaging process can be fully considered, and high precision can be achieved.

The invention discloses a control method of a four-phase permanent magnet fault-tolerant motor. In the method, a control mode can be automatically decided according to the diagnosed situation of a system failure; when the system is at a normal state, an SVPWM control is adopted; when the system has a phase-lacking failure, a fault-tolerant torque control is adopted; different fault-tolerant control proposals are adopted according to different types of phase-lacking failures. The control method realizes that the four-phase permanent magnet fault-tolerant motor can operate with high performance under the normal condition and the phase-lacking condition, overcomes the deficiency that the stable performance of the system when in normal working is reduced in the traditional fault-tolerant control system which adopts current for regulating PWM for realizing current tracing for the convenience of fault-tolerant control, establishes a mathematical model of the four-phase permanent magnet fault-tolerant motor under a rotating coordinate system, successfully applies an SVPWM strategy to the four-phase permanent magnet fault-tolerant motor and enhances the dynamic and static performances and reliability of the control system of the four-phase permanent magnet fault-tolerant motor.

The invention discloses a magnetic field decoupling structure for direct-driven type magnetic suspension linear feed unit. A supporting block is arranged on a base and the supporting block is provided with a supporting guide rail. The guide rail is sleeved with a workbench on the outside and an auxiliary support is arranged between the bottom of the workbench and the base; the stator of a linear motor is arranged on the center of the supporting guide rail and the rotor of the linear motor is arranged on the internal side of the workbench which corresponds to the stator. Two pairs of bearing electromagnet assemblies are arranged with each electromagnet facing to each other in the longitudinal direction on the insides of the upper and lower sides of the workbench and guiding electromagnet assemblies are arranged with each guiding electromagnet facing to each other on the insides of the left and right sides of the workbench. The supporting guide rail comprises a main body consisting of pure aluminum materials and pure ferrous suction plates are arranged on the part of the main body which is relative to the bearing electromagnet assemblies and guiding electromagnets and magnetic shielding covers are sleeved with the circumferential parts of the stator and rotor of the linear motor. The magnetic field decoupling structure for direct-driven type magnetic suspension linear feed unit has reasonable structure and thus can effectively achieve the magnetic field decoupling of the magnetic suspension linear feed unit from the aspect of structure.

The invention provides a server, which comprises a calculation resource node, a storage resource node and an SAS (serial attached small computer system interface) switch, wherein the calculation resource node and the storage resource node are respectively connected with the SAS switch, and are physically separated. The server has the advantages that a storage resource can be statically or dynamically distributed to one or a plurality of calculating resource nodes by using a single disc as granularity, so pooling sharing of the storage resource is realized, and the resource utilization rate is improved; the server can be flexibly expanded.

The invention provides a block chain privacy protection system and method based on homomorphic encryption. The privacy protection system comprises an authentication center which is used for carrying out identity verification, issuing a certificate and periodically checking an account book; The block chain nodes are used for collecting transactions, verifying the transactions, sorting the transactions and generating blocks; Wherein the block chain nodes comprise a preprocessing node, a confirmation node and a sorting node; And a user: one user corresponds to one confirmation node. According tothe block chain privacy protection system and method based on homomorphic encryption provided by the invention, the block chain privacy protection scheme can realize transaction information confidentiality; The blockchain privacy protection scheme can ensure that the transaction information cannot be tampered; The blockchain privacy protection scheme can ensure transaction legality; The re-encryption function in the blockchain privacy protection scheme is secure.

The invention relates to a plane orientating system with large stroke, high speed nanometer stage precision and macro/micro dual driven. The X-shaft flexible hinge is fixed between the X-shaft micro moving platform 19 and X-shaft macro moving platform 16; the X-shaft piezo-electric ceramic 18 is posited inside the X-shaft micro moving platform 19; the cushioning hinge 29 is fixed between the inner guide 28 and the outer guide 30; one end of Y-shaft piezo-electric ceramic 24 is connected with Y-shaft micro moving platform 23; two bearings 34 are separately rotating connected with inner guide 18 and outer guide 30 of the Y-shaft macro/micro moving platform 8. The working rage is 25mmX25mm; the resolution is 10nm; the repetition orientating precision is 20nm; the maxim speeds of X-shaft and Y-shaft are separately at 50m/s2 and 100m/s2.

The invention provides a service execution method, a server and a computer system. The service execution method comprises the following steps of: receiving a service request sent by a client; searching a matching rule condition corresponding to the service request from a matching rule set, and acquiring a service rule script corresponding to the matching rule condition; determining the type of a service logic subscript to be processed according to script type indication information in the service logic subscript to be processed; transmitting the service logic subscript to be processed to a script execution engine corresponding to the type of the service logic subscript to be processed; and receiving an application program interface (API) of a service component to be called transmitted by the corresponding script execution engine and the type of the service component to be called, and calling the API of the service component to be called through the execution engine corresponding to the type of the service component to be called. According to the invention, services can be decoupled, so that the services can be quickly integrated in an isomerous programming language environment, and the integration efficiency is improved.

This invention relates to permanent simultaneous motor control system based on NN with five free degree and with no bearing, which is characterized by the following: one two-free degree with no bearing simultaneous motor, one three-free degree alternating radium and axis direction mixed magnetic bearing form one sample body; three Clark anti-conversion, three current tracing anti-converter and one linear power amplifier, sample machine and its load work as one integration to form compound controlled subject; using static NN summer through study formula to form NN reverse for non-linear dynamic decoupling control on five free degrees bearing.

The embodiment of the invention discloses a service processing method, a service processing system, a workflow engine, a system and a service system. The method comprises steps: a flow instance creation request is received, and a flow ID corresponding to the system ID in the creation request is acquired from a workflow database; the node information of a starting node in the workflow is acquired from the workflow database, wherein the node information comprises a node ID and a node attribute parameter value; with the starting node as a to-be-executed node, the node information of the to-be-executed node is returned to the service system, wherein the to-be-executed node is preset in the service system; and an execution result message returned by the service system is received, the node information of a destination node is acquired from the workflow database, and with the destination node as a to-be-executed node, the operation of returning the node information of the to-be-executed node to the service system is executed. The embodiment of the invention can improve configurability and reusability of the workflow.

The invention discloses a robust controller of a permanent magnet synchronous motor based on a fuzzy-neural network generalized inverse and a construction method thereof. The construction method of the invention comprises the following steps of: combining an internal model controller and a fuzzy-neural network generalized inverse to form a compound controlled object; serially connecting two linear transfer functions and one integrator with the fuzzy-neural network with determined parameters and weight coefficients to form the fuzzy-neural network generalized inverse, serially connecting the fuzzy-neural network generalized inverse and the compound controlled object to form a generalized pseudo-linear system, linearizing a PMSM (permanent magnet synchronous motor), and decoupling and equalizing the linearized PMSM into a second-order speed pseudo-linear subsystem and a first-order current pseudo-linear subsystem; and respectively introducing an internal-model control method in the two pseudo-linear subsystems to construct the internal model controller. The robust controller of the invention has the advantages of overcoming the dependence and local convergence of the optimal gradient method on initial values and solving the problems of randomness and probability caused by using the simple genetic algorithm, obtaining the high performance control, anti-disturbance performance and adaptability of the motor and simplifying the control difficulty, along with simple structure and high system robustness.

The invention discloses a non-uniform texture small defect detection method based on an improved Faster R-CNN model, and the method comprises the steps: obtaining an image of a to-be-detected object with a to-be-detected defect, and carrying out the feature extraction of the image of the to-be-detected object through the improved Faster R-CNN model; the improved Faster R-CNN model is specificallycharacterized in that features are extracted by embedding a feature pyramid multi-scale fusion structure of a residual complementary attention gate module in the last three stages of a VGG16 network structure. The improved Faster R-CNN model integrates feature map information of different scales and receptive fields of each stage from top to bottom in a feature pyramid manner; the judging capacityfor different types of defects is enhanced, particularly the judging capacity for wrinkles of different degrees is remarkably improved, the overall recall rate is remarkably increased, and the industrial precision requirement is met. The residual complementary attention gate module can guide multi-scale feature fusion to suppress complex background information, and then context information is captured globally to locate small defects more accurately.

The invention provides a two-DOF moving shunt connection decoupling mechanism. The whole mechanism is fixed on a base platform by a guideway; two Y-direction guideways and a Y-direction driving device are fixed on an XOY basic platform; a Z-direction guideway is fixed on a YOZ basic platform; a Y-direction sliding block is fixed on the Y-direction guideway; two lower sliding supporters are respectively fixed on corresponding Y-direction sliding blocks; an upper supportor is connected with the two lower sliding supporters by a parallelogram mechanism consisting of 8 supporting rods and a rotation pair; an X-direction guideway is fixed on the upper supporter; an X-direction driving device is fixed on the Z-direction guideway; furthermore, a shell of the X-direction driving device is fixedly connected with the upper supporter; a movable platform is fixed on the X-direction guideway. The invention combines an isosceles triangle two-force member truss structure and the parallelogram structure, thus leading the final two-DOF moving shunt connection mechanism to have the advantages of implementing the decoupling of two-DOF, stable structure, high rigidity, good forcing characteristic, high transmission efficiency, simple structure, easy control, high operation precision and low cost.

The invention relates to a multi-parameter combined estimation method based on bi-static FDA-MIMO radars. The method comprises the following steps: firstly designing a transmitting signal by utilizing characteristics of FDA and MIMO radars; carrying out matched filtering, vectorization and spatial smooth processing on a receiving signal; then estimating a combined steering vector and estimating a DOA and a speed parameter by utilizing an ESPRIT algorithm, and carrying out decoupling and parameter estimation on the DOD and distance information by combining characteristics of a transmitting waveform; and carrying out ambiguity resolution on a distance result estimated by utilizing an ESPRIT algorithm and combining a distance estimated by virtue of a pulse delay estimation algorithm, and carrying out ambiguity resolution on a speed by virtue of an MUSIC algorithm by combining signal characteristics of a large number of pulses. The method provided by the invention has the advantages that the problem that the distance and speed can not be accurately estimated under the condition of a single PRF can be effectively solved, and the estimation of the three-dimensional position and speed of a target can be realized; and a simulation result shows that the method provided by the invention has good estimation accuracy and stability.

The invention discloses a framework. The framework comprises a cross beam and a side beam, wherein the side beam is of a sheet structure and hunches up in the center in the longitudinal direction; and the cross beam is connected to the hunching-up top of the side beam and detachably connected with the side beam. The invention further provides a bogie at the same time. The bogie comprises the framework; integration mounting bases are installed on the upper surfaces of the transverse two ends of the cross beam correspondingly; each integration mounting base comprises a foundation seat, a pair of brake mounting seats, a vertical absorber seat and an antiroll device mounting seat, wherein the brake mounting seats are arranged on one side of the foundation seat in the same straight line in a back-to-back mode, the vertical absorber seat is arranged at one end of the other lateral side of the foundation seat, and the antiroll device mounting seat is arranged on the other end of the other lateral side of the foundation seat; and the side beam, the cross beam and the integration mounting bases are in series connection sequentially through fasteners. The problem that a framework made from carbon fiber composite materials is poor in welding property is solved. The longitudinal, transverse and vertical rigidity decoupling of the side beam and the cross beam is achieved. The framework and the bogie have the advantages that the structure and assembling process of the bogie are simplified, and the loading burden of the framework is relieved.

The invention discloses a hybrid maglev gravity compensation apparatus comprising a static gravity compensation module. The static gravity compensation module comprises: an intermediate moving component, an exterior fixed component arranged around the intermediate moving component, and a bottom fixed component arranged below the intermediate moving component. The intermediate moving component is in a radially suspended state with the magnetic forces between the exterior fixed component and the intermediate moving component, such that a vertical guiding to the intermediate moving component is carried out. Static gravity compensating between the exterior fixed component and the intermediate moving component can be carried out with adjustable magnetic forces. According to the invention, non-contact displacement between relatively moving objects can be achieved with maglev forces. Meanwhile, gravity compensation, horizontal and vertical decoupling of a wafer supporting stage can be achieved.

The invention belongs to the technical field of edge cloud computing systems, and discloses a distributed edge cloud system architecture. The architecture comprises an edge node, an edge computing intelligent brain platform layer and an edge security boundary layer, wherein the edge node communicates with the edge computing intelligent brain platform layer through an edge private network; an intelligent brain platform of the edge computing intelligent brain platform layer is in butt joint with a plurality of different edge nodes to realize distributed deployment; data are acquired through external terminal equipment accessed by the edge node and uploading the data to the edge node for processing; the edge computing intelligent brain platform layer communicates with the center cloud or theindustry cloud through the edge security boundary layer; the edge security boundary layer serves as an interface for communication between the edge cloud system and the center cloud or the industry cloud and is used for guaranteeing the communication security between the edge cloud and the center cloud or the industry cloud; the system architecture has the characteristics of low time delay and high security, and meets the requirements of agile connection, real-time service, data optimization, intelligent application, security and privacy protection.

The invention discloses an imaging method and an imaging system of dynamic optical fields of multichannel space-time coding apertures, which comprise the steps of establishing a five-dimensional dynamic optical field module of space-time coding, introducing exposure time regarded as a time dimension into coding apertures based on a four-dimensional optical filed, and achieving space-time joint coding of a aperture mode and orthogonal space-time coding apertures based on multiplexing; estimating motion fields, eliminating motion blur, and achieving recovery of motion blur images based on exposure time coding; reestablishing multichannel depth super resolution; and achieving decoupling of motion fields and depth fields and recovering full focus images. Through multiplexing, signal to noise ratio of images and influence of shutter noise are reduced, and optical filed imaging quality is improved. Frequency response characteristics of the exposure time decoding and recovery of the motion blur images can improve definition of images after being recovered, and reestablishment of the depth super resolution improves depth resolution and modifies estimation errors of depth images with low resolution.

The invention provides a method, client terminal and system for processing game payment. The method comprises the steps that when a game SDK of the game client terminal opens a local recharging starting page through a WebKit explorer and the local recharging starting page is loaded, a rendering script of a recharging page of a remote game recharging center is obtained through a cross-domain access method, and the recharging page is rendered on the local recharging starting page; the WebKit explorer receives the rendering script, generated by the remote game recharging center, of the recharging page of a current game to generate the recharging page of the current game, and when detecting the recharging operation of a user on the recharging page of the current game, the WebKit explorer sends a recharging request to the remote game recharging center and receives a payment result returned after the remote game recharging center calls a payment center to carry out the recharging process. By means of the method, client terminal and system for processing the game payment, the game SDK and a payment interface can be decoupled, flexible and fast system upgrade deployment is achieved, the payment modes are expanded, and the user experience is promoted.