875results about How to "High degree of modularity" patented technology

The invention provides a tester for a thrust bearing, comprising a loading system (13), a test bed component (10), a rotary transmission system (4), an electric system and a control system, wherein the loading system (13), the test bed component (10) and the rotary transmission system (4) are arranged on a stand component (5). The stand component (5) is taken as a basic frame, and the loading system (13) is vertically installed above the test bed component (10). A test press head (40) at the lower section of the test bed component (10) is pressured by a piston of a hydraulic cylinder (25), wherein a test bearing (9) is positioned on the test press head (40). The rotary transmission component (4) is arranged below the test bed component (10) to drive the test press head (40) to rotate by a transmission main shaft (39); and the running situations of the test bearing (9) are tested under the condition of setting parameter sum by utilizing a pressure sensor (12) and a torsion sensor (7). The tester is applied to testing a heavy-load thrust bearing with irregular size, has high degree of automation, and can properly control the feedback by a computer.

The invention discloses a parallel active filter based on a modularization multi-level converter and a control method of the parallel active filter and belongs to the technical field of power harmonic suppression in a medium-high voltage high-power occasion. The problem that an existing parallel active filter cannot carry out harmonic combination compensation effectively, so that power distribution network electric energy quality is poor is solved. The filter comprises the modularization multi-level converter, a current transformation unit, a harmonic current detecting unit, a current controller, a capacitor C and a power grid electric reactor LS. The modularization multi-level converter is of a half-bridge-type topological structure, and an upper bridge arm and a lower bridge arm of the modularization multi-level converter respectively comprise n submodules SMn. According to the control method, a carrier phase-shifting modulation method is used, so that under the same switch frequency, equivalent switch frequency is high, switching loss is reduced, meanwhile, a capacitive coupling voltage sharing and ring current suppression strategy is used, and capacitor voltages and direct current bus voltages of the submodules are kept stable. The parallel active filter is used for harmonic suppression of a power grid.

The invention relates the spacing robot arm joint. The invention aims to the problem of bad safe reliability of spacing mechanical arm joint and complicated structure. The wave generating machine (1-3-1) is fixed in direct current brushless motor, soft wheel (1-3-3) is installed on wave generating machine (1-3-1), hand wheel (1-3-2) is installed on soft wheel (1-3-3), bearing inner ring seat (1-5) is installed on hand wheel (1-3-2), hand wheel (1-3-2) is connected with direct current brushless motor, soft wheel (1-3-3) is connected with torque pick-up (1-1), address sensor is installed between torque pick-up (1-1) and bearing inner ring seat (1-5), torque pick-up (1-1) is connected with bearing out ring seat (1-6), bearing (1-4) is installed between bearing out ring seat (1-6) and bearing inner ring seat (1-5), magnetic code device (2-2) is installed on direct current brushless motor, sleeve (3) is installed in direct current brushless motor, and drive board (2-3), control board (2-4), power board (2-5) and interface board (2-6) are connected with each other by frame, direct current brushless motor and compression ring (2-10). The invention possesses the high intelligentize degree and integration degree.

The invention discloses a fan control system adopting variable-structure PID variable-propeller control, which comprises a variable-propeller-pitch range computing module, a gust protection processing module, a rotating speed deviation filtering module, a segmented PID regulating module, a variable-propeller-pitch speed nonlinear factor computing module and an output control module. In the invention, the rotating speed of a generator is accurately controlled through the PID regulation for rotating speed deviation, and the fan control system has stable and reliable performance, can effectively improve the output power of a fan and has the advantages of excellent performance, safety and stability.

The invention discloses a ship target detection and identification method for a satellite-borne remote sensing optical image. The method comprises the following steps of preprocessing, ineffective information removal, connected region marking, feature extraction and classifier design. A coarse-to-fine strategy is adopted, firstly, a satellite image is subjected to downsampling and Gaussian filtering processing, then, land and isolated noisy points are removed from the processed image, a candidate region is quickly extracted and is marked, feature information is extracted after the image is rotated, then, the feature information is put into a pre-trained classifier to be furthered confirmed and analyzed, false alarms are removed, and a real ship target is found. Meanwhile, the invention also realizes a ship target detection and identification system for the satellite-bone remote sensing optical image. By use of the technical scheme, satellite-borne storage and calculation of limited resources can be effectively utilized to improve the stability and the real time of a ship detection algorithm, meanwhile, a false alarm rate is effectively lowered, and accurate data can be provided for maritime search and rescue and ship image positioning in time.

The invention discloses a novel lower extremity exoskeleton rehabilitation training device and a training method; in accordance with problems on efficiently and safely recovering the walking capacity of lower extremities of a patient, enhancing the adaptability of the training device and other problems in a human lower extremity rehabilitation training process, the rehabilitation training device disclosed by the invention can achieve all-directional rehabilitation training with five freedom degrees of motion on the human lower extremities. The rehabilitation device is added with angle, displacement and pressure sensors, and by detecting related motion parameters of the patient, self-adaptive adjustment is achieved; and since lower extremity exoskeleton, width regulating and height regulating mechanisms and an anti-gravity treadmill are subjected to modular design, training intensity and amplitude can be regulated in accordance with the figure of the rehabilitation patient as well as a rehabilitation progress, so that adaptability is enhanced. By integrating the designed lower extremity exoskeleton on the anti-gravity treadmill, the comfort of the patient in the rehabilitation training is enhanced, and meanwhile, the effect of the rehabilitation training is improved as well.

A module system is provided that includes at least one module support and at least one module support and at least one energy storage module that is connected to the at least one module support. The module support and the energy storage module have cooling fluid connections, electric contacts, and coupling elements that are adapted to each other.

The invention discloses a central controller for a full-wire-controlled electric automobile and a control method of the central controller. The central controller comprises a double-core microprocessor, an analogue signal input interface, an analogue signal output interface, a switch signal input-output interface, a high-speed CAN (Controller Area Network) bus interface, an RS-232 serial interface, an Ethernet network communication interface and a USB (Universal Serial Bus) interface. The central controller is used for managing, coordinating, monitoring and recording each controller and each sensor of the full-wire-controlled electric automobile. The central controller collects driver operation input and gyroscope signals, the CAN bus obtains the motion states of a steering and driving motor, the signals and the states are analyzed and calculated, related data are stored into a file, and the CAN bus and the analogue signal output interface perform integrated control on a steering, driving and braking system, thereby finally achieving driving modes of front wheel steering, rear wheel steering, four-wheel steering, wedged steering and in-situ steering and a function of converting among the modes. The controller further has a function of communicating with a host machine, and has complete fault diagnosis and fault-tolerant processing functions.

The invention discloses a layered equalizing circuit system based on a series battery stack and a hybrid control method, and belongs to the technical field of battery energy storage systems. A bottom layer of the architecture adopts an adjacent cell-cell (C2C) structure, and is divided into different battery packs. A top layer adopts a transformer coupled multi-directional multi-port converter, and bidirectional energy flow among arbitrary battery packs of the bottom layer is realized. The layered architecture can reduce the amount of equalizing circuits working simultaneously, so that the repeated charging and discharging problem of the batteries in the equalizing process is avoided, and the health status of the batteries is improved. According to the hybrid control method, during the standing of the batteries, the equalizing current required for each battery cell is obtained by calculating SOC, so that an equalizing system is controlled; when the batteries work, each equalizing circuit is controlled by calculating SOC change rate, so that a potential unequalizing tendency is forecasted in advance and is corrected, and real-time equalizing for each battery is guaranteed. Moreover, according to the layered architecture and the control method, the rated current required for the equalizing circuit can be reduced, so that the system cost is reduced, and the energy loss is reduced.

The invention discloses a movement subdivision control method of a wheeled mobile robot. The movement subdivision control method of the wheeled mobile robot comprises the steps that (1) three trajectory tracking movement control strategies based on a biologically inspired neural dynamic model, an energy optimization model and a model predictive control model are integrated; (2) a current posture error vector is worked out according to a current actual posture obtained through feedback and a reference posture given by a route planning algorithm; (3) the control strategy is selected according to the stage where the mobile robot is located, if it is in an early tracking period, the trajectory tracking movement control strategy based on the biologically inspired neural dynamic model is selected; if it is in a medium tracking period, the trajectory tracking movement control strategy based on the energy optimization model is selected; if it is in a later tracking period, the trajectory tracking movement control strategy based on the model predictive control model is selected. The movement subdivision control method of the wheeled mobile robot can achieve the best control over the whole process of the wheeled mobile robot, and achieve robustness, energy saving performance and stability while carrying out accurate trajectory tracking.

The invention discloses a photo type ultra-large form calligraphy-painting scanner platform, comprising a bearing platform, a horizontal guide rail, a vertical guide rail, a beam, a shooting support, a cloud platform and a camera light system, wherein the beam and the vertical guide rail are connected with a motor, the motor is connected with a control system and adopts a computer to control the accurate motion of a camera to shoot a calligraphy or painting block to block, and the pictures of all blocks are assembled to form an integral calligraphy / painting scanned object, thereby satisfying the high resolution demand of a calligraphy / painting artwork. The invention has large scanning form of at least 4mx8m, having simple structure, easy operation, low cost and wide application in cultural relic protection unit, museum, gallery, painting copy company, package decoration printing enterprises and the like.

The invention discloses a method and a device for testing single event upset in in in-field programmable logic gate array, comprising the following steps: a highly reliable monitor unit which is connected with the field programmable logic gate array and used for realizing the testing flow of the single event upset is arranged; the highly reliable monitor unit executes the read back flow of the configuration memory of the field programmable logic gate array, reads the configuration frame of the field programmable logic gate array, and executes an original configuration frame which is read from a nonvolatile memory by a standard NVRAM interface; and the highly reliable monitor unit compares the read back configuration frame of the field programmable logic gate array with the original configuration frame by means of byte, when the configuration frame is wrong in comparing, namely, the configuration memory of the field programmable gate array is judged to have the single event upset. The device comprises the highly reliable monitor unit which is connected with the nonvolatile memory by a bus. The invention has the advantages of simple structural principle, high reliability, good stability, etc.

The system comprises a plurality of modular blocks (10, 14) of nonmagnetic material, to be assembled to create compositions imitating, for example, a building, a doll, an animal, a vehicle or any other fancying assembly; a framework for connecting the blocks, comprises a plurality of magnetic frame members (11, 12) removably disposable into corresponding seatings (13, 17) in each modular block (10, 14), or between adjacent blocks of the composition. The modular blocks (11, 12) and the magnetic frame members of framework have shoulder surfaces (18, 19) mutually engageable in the assembled condition of the assembly.

The invention discloses a multifunctional integrated antenna, which comprises a base and a shell covered on the base, wherein a first antenna module for receiving and processing GPS (Global Positioning System) signals, a second antenna module for receiving and processing television broadcasting signals and a third antenna module for receiving and processing radio broadcasting signals are arranged on the base; and various signals received and processed by the first, second and third antenna modules are output through a feeder line arranged on the base and / or the shell. Functions such as radio broadcasting, television broadcasting, GPS signal receiving and the like are integrated, so that the requirement on multiple functions is met, the practical size of the antenna is reduced, the space arrangement simplicity of the antenna and a wiring harness space of the antenna is realized, and the sharing and modular degrees are increased. The multifunctional integrated antenna can be arranged in an open roof space of a vehicle, so that the signal receiving directivity and sensitivity of each antenna module are enhanced, and the signal interference of electrical appliance components in the vehicle on the antenna and the signal interference among antennae are reduced.

The invention relates to a network curriculum learning platform and a communication method. The network curriculum learning platform comprises a WEB server, a logic server, a database server, a content integration server, a content publishing server, a material server, a streaming media server and a network curriculum packet server, wherein the network curriculum packet server stores a network learning content packet. The network curriculum learning platform is characterized in that: the network learning content packet and the WEB server perform interactive communication through an application program interface; and the network curriculum learning platform reads basic information of a user to the network learning content packet through the application program interface on the WEB server and receives dynamic learning information of the user transmitted by the network learning content packet. By the networking learning platform and the communication method, the modularization degree is high; the network curriculum is easy and convenient to transplant; and learning resources can be shared highly.

A flexible tool for assembling a row-line chuck type wall board comprises a guide rail base, an X-direction driving unit and an upright post shape-adjusting assembly unit, wherein the guide rail base is fixedly connected to the ground; the upright post shape-adjusting assembly unit is arranged on two X-direction linear guide rails of the guide rail base and can move along the X-direction linear guide rails; and the X-direction driving unit is positioned between the bottom of the upright post shape-adjusting assembly unit and the guide rail base, is fixedly connected with the guide rail base and is connected with the bottom of the upright post shape-adjusting assembly unit. According to the flexible tool disclosed by the invention, aircraft panel assemblies are adsorbed, clamped and digitally positioned by a dot matrix vacuum chuck and stability and reliability in clamping and positioning and high positioning precision are obtained; and the digitalized positioning and drilling and riveting assembly of different wall board assemblies can be realized by reconfiguration through the dot matrix chuck of the tool. The flexible tool has higher practical value and broad application prospect in the fields of mechanical engineering / aircraft assembly.

A foldable manipulator for space workstation features that the external surface of one end of the first modular joint is fixed to the internal surface of the casing at another end of the seventh joint, the electrically conducting lines are arranged in the through hole of said modular joint for protecting them, and one end of each line is connected to the single-freedom hand jaw.

The invention relates to a counting type infinite class multi cluster full path sectional fracturing slip sleeve. The slip sleeve applies the manner of casting fracturing balls for opening the slip sleeve. The quantity of the casting balls is same with the quantity of fracturing sections. All the balls have the same sizes. The paw heads of an upper buckling paw and a lower buckling paw converge in the radial direction to seal the fracturing balls, or reinstate the original condition through the action of self-elasticity to release the fracturing ball. Grooves are formed in the inner walls of an upper connecting head and an outer slip sleeve. The inner slip sleeve coordinates with the grooves to achieve the function of counting. When all the fracturing of all layers and sections are completed.The pressure is released at the pithead. Under the function of a spring, a ball seat can be restored. The fracturing balls are back-discharged or made to fall to the well bottom. The whole pipe column can achieve full bore. In the same stage, multiple upper connecting heads, inner slip sleeves, switches and outer slip sleeves can achieve multi-cluster fracturing by the serial connection of multiple cluster connectors. In the operation without the entry of oil pipe, or in the operation with continous oil pipe, the counting type infinite class multi cluster full path sectional fracturing slip sleeve can meet the fracturing requirement of the multi-cluster, infinite class and full bore.

The invention discloses an uplink receiving method and device. The uplink receiving method includes the steps of enabling channel processing subsystems and signal processing subsystems to be in the ready state after an uplink receiver receives wireless interface data, respectively sending channel tasks and / or signal tasks to the corresponding channel processing subsystems and / or signal processing subsystems for demodulation processing, and enabling the channel processing subsystems and the signal processing subsystems to process the received tasks in a parallel mode. According to the uplink receiving method, uplink efficient parallel receiving can be achieved, the association degree of channels in an LTE uplink receiving system and association of the channels in a PUCCH are reduced, the system complexity is reduced, and the uplink receiving processing efficiency is improved.

The invention discloses a control method of wireless streaming media adaptive mixing FEC / ARQ based on Kalman filtering, belongs to multimedia communication adaptive error control field in wireless dynamic network. The method uses cross-layer design and uses Kalman filter to predict current network status (packet loss ratio) in data link layer, adaptively regulates forward error correction (FEC) parameter of link layer and automatic repeat request (ARQ) parameter of link layer; on the other hand, uses adaptive FEC strategy in application layer, adaptively regulates sending speed of video frame according to current network status, and distributes network bandwidth dynamically between the video source data and the redundant data. The invention provided method can make receiver obtain maximum playback frame rate and improves reliability and real time of streaming media transmission effectively.

The present invention discloses a precise time measuring method and a measuring circuit. The procedure is as follows: {1} an outside reference 1PPS pulse signal, an event signal to be measured and a 10 MHz standard signal are input, the first edge of a reference clock after the rising edge of the reference 1PPS pulse is extracted as a measuring pulse A and the first edge of the reference clock after the rising edge of the event signal to be measured is extracted as a measuring pulse B; {2} the interval between the measuring pulses A and B is computed out as the outlier time T 0 of the event to be measured; {3} the interval T 1 between the measuring pulse A and the 10 MHz standard signal, and the interval T 2 between the measuring pulse B and the 10 MHz standard signal are obtained through the tapped delay line method; {4} the precise time t e is obtained from the formula t e = t 1PPS + T 0 +T 1 -T 2, of which t 1PPS is the time code of the reference 1PPS. The tapped delay line technology of the present invention can output a primary time and frequency standard and can measure the event occurrence time precisely of multi nodes under a unified primary time and frequency standard.

The invention relates to a wheeled mobile robot trace tracking control method based on energy saving consideration, and belongs to the field of robot control. The method comprises the following steps that according to energy consumption characteristics of a wheeled mobile robot, the energy consumption optimization of a driving motor during cruising of the robot is intensively considered, and a motor energy consumption model is built; according to the trace tracking characteristic of the wheeled mobile robot, a kinematic model and a tracking error model are built, and a kinematic tracking sub controller is designed; a correlation model of the kinematic model and the motor energy consumption model is built according to an inherent correlation mechanism between the kinematic model and the motor energy consumption model; finally, an energy-saving sub controller is obtained, so that the wheeled mobile robot trace tracking control method based on energy saving consideration is obtained. The wheeled mobile robot trace tracking control method has the advantages that the global stability of a system and the high-precision and low-energy-consumption control of the whole process of the wheeled mobile robot can be controlled, so that the precise trace tracking is realized, and meanwhile, the energy optimization is realized.

The invention relates to a cloud computing application architecture and a cloud computing service method based on mixed cloud. The architecture comprises a main server, a data storage server, a data acquisition server, a data migration server, a cloud storage access component, an access statistical server and a database server, wherein the main server is separately connected with the data storage server, the data acquisition server, the data migration server, the cloud storage access component and the access statistical server; the data storage server and the data acquisition server are separately connected with the cloud storage access component, the access statistical server and the database server; the cloud storage access component is separately connected with the mixed cloud and the access statistical server; the database server is connected with the data migration server; and the cloud computing service method comprises a data storage step and a data acquisition step. Compared with the prior art, the architecture and the method have the advantages of high safety, low cost, strong reliability, good flexibility and the like.

The invention discloses a rocket and antiaircraft gun operation control and safety monitoring system and an operation monitoring method. The system comprises a plurality of operation point acquisition and control units 1 and an artificially-influenced weather operation central management platform, namely an upper computer 2, wherein data is transmitted between the upper computer 2 and the operation point acquisition and control units 1 through mobile communication and the Internet. The operation monitoring method comprises the following steps of: controlling the launching of a rocket or an antiaircraft gun; automatically acquiring operation information such as a launching pitch angle, a launching azimuth angle, rocket or antiaircraft gun launching information, longitude and latitude coordinates of operation points, operation time, operation ammunition using amount, operation channel numbers, ignition circuit resistance and the like; and uploading the operation information to a management center to monitor operation safety in a unified mode. By the system and the method, the problem of inaccurate information caused by manually recording and transmitting the operation information through personnel in the prior art is solved, and an effective tool is provided for a manager to accurately and timely master the information and scientifically perform artificially-influenced weather command and management.

The invention relates to a railway vehicle side wall and a welding method thereof. A manner of reducing connecting parts and improving the modularization degree is adopted; and for avoiding generating spot welding indentations, the side wall integrally adopts a laser welding manner to effectively improve welding intensity and control and reduce heat input so as to solve the problem of deformation of a stainless steel side wall. The side wall comprises a plurality of groups of side wall units, a door frame, a side wall upper edge beam and a threshold which are connected into one integral structure. The door frame is in welding connection with the side wall units; above the door frame, each two adjacent side wall units are abutted by a doorway abutting element and meanwhile, the doorway abutting element is in welding connection with the door frame; each side wall unit comprises a plurality of groups of beams and uprights, which are overlapped; and the beams are connected with the uprights in a laser welding manner.

The present invention provides an accurate trigger signal generating method and a generating circuit thereof. The steps are as follows: Step 1, an external basic pulsing signal and a standard clock signal are accessed; the first pulse of a standard clock after the basic pulsing signal rising edge abstracted and a measuring pulse A is exported outward; Step 2, a clock counting unit counts a 10MHz clock taking the pulse A as the starting point; the time interval T1 of the measuring pulse A and a 10MHz frequency standard signal is measured; Step 3, a calculation and treatment unit works out a delay time difference T2 according to an external basic 1PPS time code t< 1PPS >, a trigger time t< trig >, a counting value N and the time interval T1 and generates a reference pulse signal; Step 4,the first pulse B of a standard clock after the reference pulsing signal rising edge abstracted; Step 5 the pulse B is delayed by the time difference T2 and export outward, which generates an accurate trigger pulsing signal. Based on the accurate delay treatment to the basic pulsing signal, the present invention is connected with time frequency standard and realizes that multiple nodes generates the accurate trigger pulsing signal under the uniform time frequency standard.

The invention relates to an integrated double-main-cylinder line control braking system. The system comprises an ECU electronic control unit, an electronic pedal, a pedal displacement sensor, a first braking passage, a second braking passage and a braking liquid loop. Double-main-cylinder design is adopted in the system, an assisting main cylinder, namely the second main cylinder is additionally arranged, pressure is applied through a motor and a lead screw instead of a plunger pump and an energy accumulator originally, a working cavity and a liquid supplementing cavity of the second main cylinder can be switched freely, the motor does not need to rotate forwards and reversely frequently, the service life of the motor is prolonged, and braking response time is shortened. Meanwhile, multiple braking manners can be provided through the system, especially in the micro-braking process, the assisting main cylinder does not work, a conventional main cylinder applies pressure, the working time of the motor is shortened, and the service life of the motor is prolonged.

The invention discloses an intelligent sample storage cabinet system. The system comprises a sample storage unit for storing samples, a sample storage / taking movement unit for shifting the samples, and an intelligent control unit; the sample storage unit includes multiple storage bins arranged in an array form; the sample storage / taking movement unit includes a pneumatic manipulator mechanism; the pneumatic manipulator mechanism is provided with a storage cavity and a negative-pressure production component; and after an opening end of the storage cavity is tightly connected with opening ends of the storage bins, the negative-pressure production component extracts air in the storage cavity and the storage bins to form vacuum negative pressure so as to suck the samples in the storage bins to the storage cavity. The system has the advantages of high space utilization rate, high intelligent modular degree, capability of synchronously storing and taking one or more samples and safe and efficient sample storage and taking.

The invention discloses a two-rotation freedom degree active wrist mechanism for mini-mechanic arm or snake-moving robot in the mechanic technical domain, which is characterized by the following: fixing motor in two motor cylinders and two fixing caps; connecting two bevel gears and two big gears with output shaft of motor strictly; gearing two big gears and two small gears fixed on the output shaft of potentiometers; fixing two conical gears at the sector end surfaces with two shafts of cross-shaped coupling shaft; gearing the conical wheel and the conical gear at the sector end surface; fixing four racks on two upper and lower fixing end caps symmetrically; connecting the corrugation pipe with two fixing end lids to form a complete sealing mechanism. The invention has light and regular appearance, simple driven system, compact structure and good gesture, which improves the packing property for driving element and driven element to be convenient to integrate the system.