1700results about How to "Easy to install and debug" patented technology

The invention relates to a networking method for a wireless sensor network based on multiple sink nodes. The method is characterized by comprising the following steps of: 101, sending a control command for acquiring sensor data to the network by a control server according to demand; 102, acquiring the sensor data and sending to the sink nodes by ordinary nodes; 103, collecting the acquired sensor data, sending commands for acquiring the sensor data to the ordinary nodes and simultaneously sending the acquired sensor data to a wireless base station by the sink nodes; 104, performing time synchronization of each of the sink nodes by a time server; 105, sending the sensor data received by the wireless base station to a data server through the network, simultaneously sending the commands for acquiring the sensor data to the sink nodes, and configuring a long-distance wireless communication module for the wireless base station; and 106, storing the acquired sensor data by the data server.

The invention relates to an improved equipment on the basis of an original patent wall side plastering machine (the patent number: ZL01218090.4), and the invention is that two groups of mutually independent plane plastering devices and reentrant and outside corners plastering devices are arranged on the revolution support of a crawler belt chassis. Improvement is done to a power driving system of the crawler belt chassis, and a half axis and an electromagnetic clutch are added. The revolution support adopts a gear worm to drive. The weight of a complete machine is reduced, in order to ensure that the whole mechanization is realized for the work of the complete machine such as the plastering, the roughening, the treatment of the reentrant and outside corners during the construction, the labor strength is greatly reduced, the production efficiency is improved, and the maintenance expense is reduced, as well as the service life is prolonged.

The invention discloses a micro grid monitoring and energy management device and method. The device comprises a master controller module and a microclimate information monitoring module. The master controller module comprises a central processing unit module, a storage module, a communication module and an auxiliary module. The microclimate information monitoring module comprises a transfer module and an in-situ monitoring module. The method includes an information monitoring and communication modeling step, a super short-term power prediction step based on microclimate monitoring, a rolling optimization step, and a micro grid energy management method based on multi-time scale coordination control. According to the device, sufficient consideration is given to convenience and real-timeness of microclimate information acquisition, and real-time monitoring of various microclimate characteristic quantities is achieved; cost is low, the convenience is high, the real-timeness is strong, and strong flexibility is achieved; the method enables step-by-step thinning to be carried out on a micro grid energy management process and enables the micro power grid monitoring and energy management device to have higher real-timeness and accuracy and to feed back and respond to wind, light and load fluctuation information in a micro grid timely.

The invention discloses a machine-vision based liquid level detection device and method. In the method, algorithm processing is carried out on a field liquid level image acquired by using an infrared camera to obtain real-time liquid level height information so as to obtain the instant height of the liquid level. In order to obtain the height information of the liquid level accurately and efficiently, five self-designed algorithms including a cameral distortion correction algorithm, a self-adaptation detection coordinate setting algorithm, a liquid level line segmentation algorithm, a data filter algorithm and a data setting algorithm are used in the machine-vision based liquid level detection device; and meanwhile, in order to implement the algorithms effectively, a calibration manner is introduced in the invention and is applied to a target tracking process of a camera. In the invention, a single-chip microcomputer of an ARM (Advanced RISC (Reduced Instruction Set Computer) Machine) series is used as a main processor. By adoption of self-adaptation coordination setting, the device is not only suitable for open type and / or closed type liquid level detection environments but also suitable for mechanical equipment positioning and product counting, and has a very broad application prospect.

The invention discloses a device for testing the performance of an automotive steering system, comprising a steering simulating system, an axial loading system, a suspension fork simulating system and an automotive steering system, wherein the steering simulating system is used for simulating the rotation of a steering wheel in an automatic and manual mode; the axial loading system is used for simulating a steering load and loading the steering load to the automotive steering system (comprising a steering column, a steering gear, a tie rod and a simulation steering knuckle) through a Bell mechanism; the suspension fork simulating system is used for simulating wheel jumpiness during driving. The device for testing the performance of the automotive steering system is used for experimenting and testing the steering performance of an automotive steering in various driving conditions, such as experiments and tests of kinematic and mechanic parameters of full angle, transmission ratio characteristic, transmission clearance characteristic, transmission efficiency characteristic, driving moment, rigidity, relationship between steering performance and suspension fork jumpiness and the like. The device directly simulates the steering wheel to load the automotive steering through the Bell mechanism, so that the testing result is closer to a real working condition.

The invention relates to a vehicle positioning and speed measuring method based on the dynamic video feature of a vehicle, belonging to the technical field of intelligent transportation and close-range photogrammetry. The vehicle positioning and speed measuring method comprises the following steps: judging the vehicle dynamic video feature size in a video image within any time quantum in one video monitoring system according to vehicle dynamic feature parameters extracted from the video image which calibrates a vehicle traveling process, and reconstructing and reducing a dynamic video feature model of a to-be-measured vehicle traveling process corresponding to each image frame; and calculating an actual position and a vehicle speed value sequence corresponding to each image frame in the to-be-measured vehicle traveling process according to a mapping relation between the dynamic variation characteristic of the image feature size of a vehicle to be measured and the actual vehicle movement parameters, and thus acquiring the actual position and traveling speed information of the vehicle. The vehicle positioning and speed measuring method is easy to realize and high in accuracy, and is applicable to the demands of various vehicles on speed measurement in a road traffic video monitoring system.

The invention discloses a clamping device for a manipulator, and the clamping device comprises a supporting base, a mounting frame, a horizontal driving device and a clamping jaw device, wherein the mounting frame is arranged on the supporting base and can move relative to the supporting base along a vertical direction; the horizontal driving device comprises a base, a gear, a rack and a driving motor; the base is fixedly arranged on the mounting frame; the gear comprises a gear shaft; the gear is rotatably arranged on the base; the gear shaft extends out of the base and is connected to the driving motor; the rack is engaged with the gear; the gear is driven by the driving motor to cause the rack to horizontally slide relative to the gear; and the clamping jaw device is fixedly mounted on the rack and can slide relative to the mounting frame along with the rack in the horizontal direction.

The invention discloses a multi-agent and heterogeneous communication technology based micro-grid intelligent measuring and controlling terminal, a multi-agent system and a measuring and controlling method of the multi-agent system. An element Agent, a micro-grid Agent and an upper-stage power grid Agent form a micro-grid multi-agent system. The intelligent measuring and controlling terminal comprises a master control module, a data acquisition module, a protection control output module and a heterogeneous communication module. The data acquisition module acquires real-time data information of base layer elements in the micro grid, the master control module stores and processes the real-time data information and sends the real-time data information to an upper micro-grid Agent through the heterogeneous communication module. Meanwhile, the master control module receives control instructions of the micro-grid Agent through the heterogeneous communication module and transmits the control instructions to the base layer elements in the micro grid through the protection control output module to control the work states of the elements. The intelligent measuring and controlling terminal and method have the advantages of being capable of achieving mutual communication of micro-grid complex heterogeneous communication networks, wireless, small in size, low in power consumption, low in cost and capable of improving the micro-grid safe and stable operation and power generation efficiency greatly.

The package structure for a high-speed semiconductor light emission assembly comprises: a dish-type case with RF connector, a semiconductor refrigerator to control the work temperature of emission chip, a KOVAR metal heat sink, a medium heat sink substrate, a light emission device, a thermistor, a backlight detector, the metal wire to connect dc connection electrode and case pin, a coplanar waveguide transmission lie on medium substrate, and optical coupling assembly. Wherein, it uses BTF standard package form for dc terminals outside the case.

The invention discloses a cage-stabilizing and cage-locking device for a cage of a vertical shaft. The device consists of a first supporting seat (1), an oscillating platform (2), a cage-clipping device (3), a guiding device (4), a second supporting seat (5), an oscillating hydraulic cylinder or air cylinder (6) and a straight push hydraulic cylinder or air cylinder (7). The device is characterized in that: the oscillating platform (2) is hinged with the first supporting seat (1), and the oscillating hydraulic cylinder or air cylinder (6) is hinged with the oscillating platform (2) and the second supporting seat (5) respectively; the straight push hydraulic cylinder or air cylinder (7) is hinged with the cage-clipping device(3) and the first supporting seat (1) respectively; and the guiding device (4) and the second supporting seat (5) are connected by a spring. The cage-stabilizing and cage-locking device of the invention comprises two sets of cage-locking devices symmetrically arranged, and the forward and backward movements of the cage-clipping device are realized by the guiding device (4) and the straight push hydraulic cylinder or air cylinder (7). The device of the inventionhas a simple structure and can be conveniently assembled and tuned; and by using the device, the cage can be locked when assembled or disassembled, so that the cage is prevented from swaying up and down due to elastic change when being assembled and disassembled, and the stable assembly and disassembly of the cage is ensured. The device has the advantages of preventing skid of a wire cable, reducing the elastic deformation of the wire cable, and prolonging life time of the wire cable and the friction lining.

The invention discloses a resilient four-link mechanical leg and a test platform thereof. The resilient four-link mechanical leg comprises a large leg and a small leg both in strip shapes, the lower end of the large leg is hinged to the upper end of the small leg to form a knee joint, a driven wheel is fixedly connected to the small leg, a first motor is fixed to the upper portion of the large leg, a driving wheel fixedly sleeves an output shaft of the first motor, and the driving wheel is connected with the driven wheel through a synchronous belt; the middle of a strip foot is hinged to the lower end of the small leg, and a first damping spring is connected between the upper end of the foot and the upper portion of the large leg; thus the resilient four-link mechanical leg with timely response, accurate control and effective force transmission is provided; the resilient four-link mechanical leg is disposed on a conveying belt, a supporting seat fixed relative to the conveying belt is arranged, a support rod is mounted on the supporting seat, a connecting block is fixed to the support rod, a second motor is fixed to the connecting block, an output shaft of the second motor is fixedly connected with the upper end of the large leg of the resilient four-link mechanical leg, and a mechanical leg test platform small in size and simple in structure is provided.

The invention provides an information retrieval system for the accurate storage position of stock articles and the method thereof. The system of the invention includes two parts of hardware and software. The hardware comprises six parts including a microcomputer for system management and data processing, a radio signal receiver, a plurality of special warehouse entry radio scanners, a plurality of special warehouse exit radio scanners, bar codes on an article storage rack layer, and bar codes of articles. The software comprises three subprograms including system management, data processing and inquiry display. The invention has the fundamental principle that the bar codes attached on the stock articles and the bar codes on the article storage rack layer are scanned through the radio scanners, after the analysis and the processing of the computer, the relation between each stock article and the storage rack layer is created, and the sequence information among the articles is confirmed, thereby obtaining the accurate storage position information of all stock articles, wherein, the information includes six level information including the building number, the floor number, the room number, the rack number, the rack layer number, and the sequence number of each layer where the article is positioned. The invention is characterized in that all stock articles do not need to sort and separate and stock in a fixed position, and the mixed positioning of various articles cannot influence the accuracy of the system information. In addition, the usage of the invention can reduce the workload for the article entry / exit warehouse, thereby improving the working efficiency of the entry / exit warehouse, and improving the space utilization rate of the storage rack.

The invention discloses a method for measuring hinge moment of a control surface. The method is used for measuring the hinge moment of the control surface by using a balance when a wind tunnel test aiming at the control surface of an aircraft model is performed. A single-component balance is adopted to be directly connected to a rotary shaft of the control surface extending into a machine body, and the hinge moment of the control surface is directly measured by the balance, so that defect of low measuring accuracy due to influence of deformation of a wing on a three-component balance is overcome. In addition, as space in the machine body is wide enough, a balance with higher precision can be designed, and equipment such as the balance and a measurement cable are very convenient to mount and debug. Moreover, according to the method for measuring the hinge moment, the single-component balance can be used for directly measuring not only the hinge moment of the control surface but also the hinge moment of the control surface at different angles and does not need to be changed for different angles like the existing three-component balance, test flexibility is greatly improved, and adaptability is better.

The invention discloses a rail train displacement and speed detection system. The system comprises a background detection camera, a target detection camera, an active light source and a vehicle-mounted processor, all of which are arranged on a train. The light field of the active light source covers the view field, directly facing a steel rail, of the background detection camera and the view field, directly facing the steel rail, of the target detection camera; the vehicle-mounted processor compares the movement offset of two frames of adjacent background images collected by the background detection camera and the movement offset of two frames of adjacent target images collected by the target detection camera, and a first displacement and a second displacement in one image capture of the train are calculated in combination with imaging plane and rail plane height values; the vehicle-mounted processor conducts weighting calculation on the first displacement and the second displacement, and real-time displacement and speed of the train are obtained. The system has the advantages of being high in reliability, high in detection precision, low in cost, easy and convenient to install and maintain and wide in application range.

The invention relates to a method and a system for monitoring total phosphorus and total nitrogen of water quality on line. The monitoring method comprises the following steps of: a, acquiring a water sample; b, performing ultraviolet digestion on the acquired water sample according to the principle of ultraviolet digestion and ultraviolet absorption methods; and c, discharging the digested water sample into a cuvette to perform ultraviolet absorption through ultraviolet light, and meanwhile calculating light intensity through a light sensitive sensor to obtain the concentration of pollutants. The detection system comprises a PLC, a CPU, a sample pretreatment device, a multi-way sampling valve, an injector, a reactor, a detector, a human-computer interface and a communication interface, wherein the sample pretreatment device, the injector, the reactor and the detector are connected to the multi-way sampling valve through pipelines respectively. The method and the system can efficiently, quickly, stably and accurately perform continuous detection, storage and forwarding on the concentrations of the total phosphorus and the total nitrogen, and have the advantages of high measurement precision, stable performance, high efficiency, small volume, light weight, convenient assembly and debugging, low cost, low energy consumption, independent use, long-term continuous work and the like.

A laser imaging lens of heavy-bore type is prepared for setting negative optical diopter of the first lens, positive optical diopter of the second lens, positive optical diopter of the third lens, positive optical diopter of the fourth lens and positive optical diopter of fifth lens in sequence along the same optical axis from object end to imaging end, applying meniscus lens with light-through bore of 140-150mm as the first lens, utilizing fused quarts as material of all said lens and setting combined focal length of each lens to be satisfied with condition of f x tanw=ap.

A portable natural gas flow measuring and checking system comprises an on-site flowmeter, a natural gas flow measuring and checking device and a portable computer; the on-site flowmeter does real-time measuring to the on-site flow capacity and transmits the data to the natural gas flow measuring and checking device; the natural gas flow measuring and checking device receives the field data from the on-site flowmeter and transmits the data to the portable computer; the portable computer processes the detected data from the natural gas flow measuring and checking device; one end of the natural gas flow measuring and checking device is connected to the on-site flowmeter and the other end is connected to the portable computer. The system has the advantages of high measuring accuracy, better measuring ability, low power consumption, better interference resistance, broad application sphere of electric voltage, simple and convenient operation, convenient carrying and the like, and the invention can be widely used in the measuring and detecting of water, water vapor, sewage and the like in the industries of petroleum, chemical industry, electric power, metallurgy and the like to guarantee the stability of measuring capacity of on-line meter.

The invention discloses a product outer surface defect image acquisition device based on machine vision. The product outer surface defect image acquisition device comprises a product to be detected, a camera which is arranged corresponding to the product to be detected, and a lens which is arranged around the product to be detected. Compared with an existing system which utilizes five cameras to carry out image acquisition on five surfaces of a cell phone shell, the product outer surface defect image acquisition device only uses one camera and one station to simultaneously finish the defect image acquisition of five surfaces of the cell phone shell, so that the cost is saved greatly; the cell phone shell does not need to be pushed by an air cylinder to turn for a right angle so that continuous detection is convenient to realize; the product outer surface defect image acquisition device is simple in structure, simple and convenient to operate, small in data processing amount and short in detection period.

The invention discloses a quick calibration method for a robot vision system. The robot vision system comprises a robot, a working platform, a CCD camera and a computer, wherein the computer is used for controlling the CCD camera to collect image data of the working platform, and the computer further can control movement of a robot. The method comprises the following steps of 1, mounting the CCD camera to the working platform, so that when a workpiece is put on the working platform, a local part of the workpiece is located in a view field region of the CCD camera; collecting feature coordinate points of the workpiece by coordinates of a coordinate system of the camera; 2, writing a distortion correction algorithm by utilizing opencv, and performing quick distortion correction on the CCD camera; 3, calibrating scale relations between the coordinate system of the camera and a world coordinate system of the robot and between the coordinate system of the camera and an actual size; and 4, calibrating an origin of a user coordinate system of the whole working platform. The calibration method is low in cost, convenient in installation, quick in calibration and easy to realize.

The invention discloses a fiber optic gyro framework designed according to sectorization, comprising an upper cover (2), a framework body (1), a magnetic shield (4), a front-laid cover (5) and a lower cover (3); the upper cover (2) is connected to a B cone frustum (12) of the framework body (1) by threads, the front-laid cover (5) is mounted on an L-shape clapboard (104) in the framework body (1), the magnetic shield (4) is positioned between the framework body (1) and the lower cover (3), and the lower cover (3) is mounted at the lower end of the framework body (1). The framework body (1) designed by the invention is laid out with regions according to the functions realized by an element to be placed, the framework body (1) under intact construction is divided into an upper layer cavity (16A) and a lower layer cavity (16B) by a cavity separating plate (16), the upper layer cavity (16A) is mainly used for placing elements with optical fiber such as an SLD light source (1G), a coupler (1H), a Y waveguide (1F), a photoelectric detector (1E) as well as a light source drive circuit (1B), a front-laid circuit (1J) and the like; and the lower layer cavity (16B) is used for placing the magnetic shield (4) and signal circuit (1C).

The invention relates to a button attaching device for the products such as clothes, shoes and caps, chests and bags and straps, in particular to a full-automatic gas-activated button attaching machine, which comprises a machine head rack, a lower punch head bus, an upper punch head bus connected to the machine head in sliding and an upper material feeding structure and a lower material feeding structure, wherein the upper and lower material feeding structures are mainly composed of a vibration material-feeding disk, an automatic reset material-blocking device and an automatic reset material-pushing rod. The invention aims to provide a full-automatic gas-activated button attaching machine, which can feed materials automatically. Compared with the prior technique, the machine has the advantages of high production efficiency, smooth material transportation, easy fixing, modulation and adjusting, low cost, small volume and easy automatic controlling.

The invention provides a wireless intelligent thermodector. The thermodetector is characterized by mainly comprising an advanced RISC (reduced instruction set computer) machine (ARM) processor (1), a Flash storage unit (2), a synchronous dynamic random access memory (SDRAM) (3), a general packet radio service (GPRS) module (4), an Ethernet interface (5), a geographic information system (GIS) module (6), a liquid crystal display (LCD) module (7), a keyboard input module (8), an analog / digital (A / D) converter-input (9), an A / D converter-output (10), a power supply module (11), an alternate current-direct current (AC-DC) module (12), a real-time clock (13), a multipath control input (14) and a multipath control output (15). The wireless intelligent thermodetector has the functions of automatic data recording and storage, real-time analysis, real-time display, clock synchronization, automatic monitoring (supervision), abnormal data warning, failure alarming, remote control, security management, automatic transmission, self-startup in outage and the like, has the advantages of simple structure, convenience for assembly and debugging and good reliability, and solves the problems of more conversion equipment, complicated equipment assembly, complicated cable distribution, slow abnormal response and the like in the conventional equipment.

The invention discloses a self-centering depth hole parameter measurement device, comprising a centering device, a measurement recording device and a processing device. The centering device is arranged in a depth center of the workpiece and comprises a sleeve, a centering shaft, three conical bodies, six measurement rods and a spring. The recording device comprises two distance measurement sensors which are fixed on two ends of the centering shaft; the two distance measurement sensors are electrically connected to the control terminal; the processing device comprises a second motor, a reel and a flexible rope; one end of the flexible rope is connected to one end of the centering shaft; the other end of the flexible rope is wound on the reel; the rotation shaft of the reel is connected to the output shaft of the second motor; the two conical bodies move toward the two sides under the resetting force of the spring and a measurement rod slides inside a sliding groove, which causes the measurement rod to radially move outwardly until the measurement head of the measurement rod is abutted against the inner wall of the workpiece depth hole, and thus the two conical bodies are under a force balance state; and, at this time, the centering shaft is positioned on the axis of the depth hole, which achieves the goal of depth hole shaft centering and guarantees the precise measurement of the related parameters of the workpiece depth hole.

An optical adjusting mount capable of movably processing all-solid-state high power lasers comprises a frame, a support and a fine adjustment screw pair, wherein a lens hole of the frame is internally equipped with a baffle ring, a retainer ring is disposed on the front of the baffle ring, four tension spring holes are positioned on the frame, the back face of the frame is equipped with a V-type groove, a concave groove and a ball tapered-groove, the side face of the frame is equipped with a cooling water inlet and an outlet, the support is equipped with four tension spring holes, two holes for the fine adjustment screw pair and a ball tapered-groove which correspond to the frame, the frame and the support are connected through tension springs, each of the ball tapered-grooves of the frame and the support are inlaid with a ball, the fine adjustment screw pair is respectively mounted in the two holes for the fine adjustment screw pair of the support, the front ends of the fine adjustment screw pair are respectively located in the V-type groove and the groove. The optical adjusting mount has the advantages of scientific reasonable design, compact structure, low material consumption and low cost, further utilizes the baffle ring made of low-hardness fine heat conductivity red copper to press the lens on the end face, thereby effectively reducing the lens temperature, and utilizes the V-type groove and the ball for positioning, thereby realizing stable and reliable groove limiting.

The invention provides a data acquisition system (DAS), a data acquisition control method and mobile CT (Computed Tomography) scanner. The data acquisition system comprises a plurality of signal acquisition modules corresponding to a plurality of detectors, a DAS control panel and acquisition control modules, wherein the signal acquisition modules are used for acquiring current signals outputted by the detectors, and converting the current signals into digital signals; the DAS control panel is used for obtaining configuration information required by signal acquisition, and packaging and serializing the digital signals; and the acquisition control modules are used for computing the configuration information, and controlling the signal acquisition modules to acquire the signals according to the computed configuration information. A modular design is adopted, so that installation and debugging of a complete machine are facilitated, and the system has good maintainability and stability.

The invention provides remote three-dimensional micro-deformation visual on-line monitoring method and system. The system comprises a composite target, a laser source, a visual detector, a positioning holder, an electric controller, an optical fiber transmission device, a digital acquisition card and an industrial control computer. The visual detector and the laser source in the system can realize three-dimensional monitoring, the overall design structure is simple, and the processes of installation and debugging are convenient; meanwhile, the electric zoom is used for carrying out visual detection to realize the purposes of adjustable monitoring distance and high measuring accuracy; and a digital camera and the optical fiber transmission device are combined to realize reliable transmission of remote signals and separation of the field and the monitoring space, and the composite target realizes integration of different target monitoring.

The invention discloses a flowmeter with a middle through-hole movable throttling element connected with elastic membranes or a bellows, which belongs to the throttling flowmeter in the automatic detection technical field; the patent 'a middle through-hole movable throttling element flowmeter' depends on the thrust of the movable throttling element, and does not like a fixed throttling element which measures the flow according to the flow differential pressure, so a pressure pipe can be dispensed, the flowmeter is applicable to measuring small calibers and dirty liquids, the isolation, the pressure-bearing, the support and other functions of the flowmeter are all respectively realized through different components, and the integral structure is more complicated. The flowmeter adopts the elastic membranes or the bellows to be connected with the middle through-hole movable throttling element, the isolation, the pressure-bearing, the support and other functions are realized independently by the elastic membranes or the bellows, the integral structure of the flowmeter is greatly simplified, not only are all the advantages of the through-hole movable throttling element obtained, but also a plurality of performances are improved, and the invention makes the through-hole movable throttling element flowmeter which is a novel meter be more easily popularized and used.

A stalk guiding and detecting mechanism of tractor for working between two lines of stalk in corn, sorghum, or cotton field is composed of a cantilever, a contact rod unit consisting of connected symmetrical two arc contact rods with rotary axle, and an angular displacement sensor with rotary axle linked with said rotary axle of contact rod unit.

The invention relates to a high-speed magnetic-suspension bearing-free permanent-magnetic machine, which comprises a shell, a stator core, a stator winding, a permanent-magnetic rotor, a rotating shaft, a left terminal cover, a right terminal cover, a left standby bearing and a right standby bearing. The stator core is divided into a right section and a left section and is provided with a groove that is used for holding the stator winding on the radial inner side and the radial outer side. The stator winding consists of a set of double-pole torque windings that are used for producing the electromagnetic torque and two sets of four-pole magnetic-suspension windings that are used for producing the rotor suspension force. The permanent-magnetic rotor consists of a permanent-magnet of a radial magnet-charging integral structure, a high-strength magnetic-conductive sheath and a fastening piece. The standby bearings are used for supporting the rotor when the high-speed motor is not powered on. The invention integrates the magnetic-suspension bearing and the permanent-magnetic machine, so that the stator and the rotor of the machine not only can produce the electromagnetic torque that drives the rotation of the motor, but also can produce the magnetic-suspension force that supports the weight of the rotor, thereby simplifying the structure of the machine, shortening the axial length of the machine, increasing the stiffness and the critical rotating speed of the rotor of the high-speed machine, and improving the stability of the operation.