301results about How to "No mechanical wear" patented technology

The invention relates to an electronic device for determining a first positional information and a second positional information regarding a user input object, such as at least one user hand or at least one stylus, the electronic device comprising: a touch-sensitive surface; contact-free detection means; and controller means that are operatively connected to the touch-sensitive surface and to the contact-free detection means; wherein the first positional information depends on where the user input object contacts the touch-sensitive surface, and wherein the second positional information depends on the spatial configuration of the user input object with regard to the touch-sensitive surface, characterized in that the controller means are adapted for simultaneously and / or alternately determining the first positional information via the touch-sensitive surface and the second positional information via the contact free detection means.

The invention belongs to the technical field of vibration and noise control and relates to a relatively-high-applicability passive isolation technology for ultralow-frequency vibration. In order to effectively solve the problem between the low-frequency vibration transmissibility and the high-frequency vibration attenuation rate of the vibration isolator, the invention provides the stiffness-adjustable magnetic vibration isolator with quasi zero stiffness, which adopts rectangular permanent magnets generating negative stiffness and an elastic capsule providing positive stiffness; and when a load is changed, the working position of the elastic capsule is controlled unchanged, the positive stiffness of the elastic capsule is changed because the pressure inside the elastic capsule is changed, and then, the negative stiffness is matched with the positive stiffness through regulating the distance among the rectangular magnets, so that the stiffness-adjustable magnetic vibration isolator with quasi zero stiffness is adaptable to vibration isolation objects with different weights. The stiffness-adjustable magnetic vibration isolator with quasi zero stiffness is simple in structure, convenient to mount, adjustable in bearing capacity, excellent in vibration isolation property, compact in structure, light in weight and suitable for popularization and application.

The invention discloses a silicon-based hybrid integration laser radar chip system. According to a light path sequence, the transmitting terminal of the system comprises a tunable narrow linewidth laser source, a silicon nitride beam splitter, a silicon-based phase shifter array and a silicon nitride one-way transmitting antenna array in sequence. According to a principle that the light path is reversible, the receiving terminal of the system comprises a silicon nitride one-way receiving antenna array, a silicon nitride beam splitter and a silicon-based coherence receiving module in sequence and also comprises a backup system and an electric domain control processing module. Each module on a silicon platform and a silicon nitride platform realizes multilayer single-chip integration with the help of a silicon / silicon nitride evanescent wave coupler, and a gain chip in a tunable laser source module and silicon nitride waveguide are subjected to hybrid integration through horizontal coupling. By use of the system, through multi-platform multi-field hybrid integration, the high-speed flexible wave beam formation, rotation and directivity receiving of a free space laser signal can be realized in a phased array way. The system does not contain movable devices, and has high integration density, good CMOS (Complementary Metal-Oxide-Semiconductor Transistor) compatibility, low large-scale volume production cost and extremely high practical value.

The invention is a fire monitoring method and device based on all- direction computer vision, mainly making field monitoring by all-direction computer vision sensor, inputting the taken continuous all-direction image into the computer for continuous image processing and analysis, and obtaining a synthetic result by simple fire mode classification, flame area change characteristic judgment, flame shape change characteristic judgment, flame color characteristic judgment, flame flickering rule characteristic judgment, whole flame motion characteristic judgment and fire intensity characteristic judgment, making different processings according to the calculation and synthetic judgment quantized values to reduce false alarm rate of fire. And the invention provides a truly original, quicker, accurater, more reliable multiparameter intelligent fire monitoring method and device.

The invention discloses a non-contact CPU (Central Processing Unit) card entrance guard reader comprising a radio frequency part, a 485 communication part, a security module part, a Wigan output and external control part, a power supply part, an external connection part, a microcontroller part and other parts. The non-contact CPU card entrance guard reader is internally provided with a PSAM (Pilot Symbol Assisted Modulation) card and applies security certification read-write mechanisms of the PSAM card and a CPU card. The CPU card entrance guard reader builds an integral and strict key management system by adopting the security certification of the PSAM card and the CPU card, sufficiently uses the security characteristics of the CPU card and comprises key systems of the CPU card and the PSAM card; after a key is input into the PSAM card, the key cannot be externally read, the PSAM card is inserted into card reading equipment, two-way validation is carried out through the PSAM card and the CPU card, a verified message is calculated through the participation of random data, and a same card is different every time when swiped on one equipment, therefore a counterfeit card is thoroughly prevented.

The invention provides a compact axial-flow magnetic-levitation artificial heart pump, in particular to an artificial heart pump characterized in that two permanent magnet bearings and a mix of radial magnetic bearing suspension, and the radial magnetic bearing and a permanent magnet motor share a stator and a rotor. The compact axial-flow magnetic-levitation artificial heart pump has the structure that the compact axial-flow magnetic-levitation artificial heart pump comprises a stator assembly, a rotor assembly, a front guidance impeller and a rear guidance impeller; a taper-shaped or axial permanent magnet bearing is respectively formed by a first permanent magnet (9) and a right permanent magnet ring (14) as well as a second permanent magnet (19) and a left permanent magnet ring (18) to realize the purpose that the rotor axially supports in a suspension mode; a torque coil (5) and a suspension coil (7) are respectively wound on a motor stator (6); and with a certain decoupling control algorithm, the motor stator not only generates torque force but also generates radial suspension support force. In the compact axial-flow magnetic-levitation artificial heart pump, the rotor is supported by permanent magnetic force and electromagnetic force, and the compact axial-flow magnetic-levitation artificial heart pump has the advantages of small damage on blood, less radiation, compact structure and the like, is easy to transplant, is suitable for patients suffering from cardiac function failure, heart diseases and the like and can be used for ventricular assisting for a long time or a short time.

The invention relates to a method for applying a RFID technology and a sensor technology to the supervision and the control of safety equipment, which comprises the following concrete steps of: (a) reading safety equipment adhered with specific electronic tags at real time by utilizing a radio-frequency identification (RFID) monitoring and managing system installed in public places and finishing the real-time monitoring of the working state of the safety equipment; (b) if the monitoring and managing system can not effectively identify the due tag number in a RFID read-write area of the monitoring and managing system, informing an alarm emergency treatment platform of starting working by a background service system; (c) if tag information does not conform to the current state information of the safety equipment in the processes of maintenance, overhaul and check, triggering a corresponding alarm by a RFID read-write unit and informing a manager of carrying out treatment; and (d) if the detection value of a sensor in the public places is abnormal, showing the existence of safety accidents or hidden danger; and when conforming to an alarm condition, issuing an alarm by the background service system and starting an alarm emergency treatment plan. The invention has the advantage of simple and convenient installation, debugging and maintenance.

The invention relates to a magnetism transmission gear pair of a novel transverse magnetic field, which can be widely applied to wind power generation, electric cars, ship drive and other industrial transmission fields requiring direct drive. The magnetism transmission gear pair is characterized in that a driving wheel and a driven wheel of the magnetism transmission gear pair are of a flat disk shape, 2pr driving wheel permanent magnets 3 are distributed on the driving wheel, and 2ps driven wheel permanent magnets 7 are distributed on the driven wheel; a ferromagnetic magnetic modulation grid 6 playing a role of modulating an air-gap magnetic field is arranged between the driving wheel and the driven wheel, air gaps are reserved between the ferromagnetic magnetic modulation grid 6 and the end surfaces of the driving wheel and the driven wheel, and the ferromagnetic magnetic modulation grid 6, the driving wheel and the driven wheel have no mechanical contact and are distributed along the same axis; the air-gap magnetic field Bg passes through an air-gap plane along a route parallel to a rotation axis to form a transverse magnetic field of the magnetism transmission gear pair; and during working, power speed change transmission without mechanical contact and friction is realized by utilizing a principle of heteropolarity attraction of an N pole and an S pole of a permanent magnet material.

The invention relates to an electronic smoking device and a temperature control method thereof. The electronic smoking device comprises a hollow holding end and a metal heating element connected with one end of the holding end. A control device is arranged in a cavity of the holding end, and the control device adjusts the temperature of the heating element by acquiring the real-time resistance value of the heating element. A battery is further arranged in the cavity of the holding end. The control device comprises a power driving unit, an analog-digital conversion unit, a control unit and a real-time resistance detection unit, wherein the real-time resistance detection unit is used for detecting the real-time resistance of the heating element, and the control unit adjusts the output power of the power driving unit according to the real-time resistance value of the heating element. The electronic smoking device with the structure has the advantages that temperature can be controlled precisely, cleaning is easy, and using is convenient.

The invention provides a device for detecting cam profiles, which has the advantages of simple structure, high detection precision and higher efficiency. The device comprises a numerical control turntable, a linear motor, a laser measuring head, a grating scale displacement sensor, an encoder and an industrial personal computer, wherein the numerical control turntable is used for driving the cam to horizontally and coaxially rotate around a vertical mandrel; the linear motor is horizontally arranged on one side of the numerical control turntable; the laser measuring head is arranged on the active cell of the linear motor and at one side of the cam; the grating scale displacement sensor is used for measuring the horizontal displacement of the active cell; the encoder is used for detecting the rotation angle of the cam; and the industrial personal computer controls the numerical control turntable and the linear motor to act and obtains the outer profile data of the cam according to data measured by the laser measuring head, the grating scale displacement sensor and the encoder.

The invention relates to a magnetic suspension light wind generating street lamp with the complementation of wind and light, comprising a lamp rod, a junction box and a lamp head. The lamp rod body, or the pole support body connected with the lamp rod, or the bodies of the lamp rod and the pole support are provided with magnetic suspension generating devices; or one group or a plurality of groups of magnetic suspension generating devices are sequentially connected in series through an upper and a lower fixed flange as the street lamp rod, a spherical solar energy photospot generating device is installed on the top of the lamp rod or directly on the upper fixed flange of the magnetic suspension generating device and the lower fixed flange is installed and fixed on the junction box; the magnetic suspension generating device comprises a stator consisting of the inner shell of the lamp rod body, the pole support body or the generating device, a coil winding, a radial permanent-magnetic clamp and the upper and the lower fixed flange and a rotor consisting of a continuous permanent-magnetic clamp, a shell and a fan blade. The invention can directionally revolve the wind of any direction, with high reliability, small resolving noise, no mechanical abrasion, high power generation efficiency and long service life of the whole appliance. The street lamp can be widely used for various occasions.

The invention discloses a method and device for removing high voltage transmission line foreign matter by means of laser electrification. The method and device are used for removing kites, plastic films, balloons, banner advertisements and other foreign matter which threatening high voltage transmission line operation safety. According to the method and device, laser light is used as working media, a pan-tilt is used as a rotating device, foreign matter object searching, recognition and collimation are achieved through image information, laser automatic focusing is achieved through distance information, and electrification removing of foreign matter is achieved by radiating focused high energy laser on the foreign matter object. Remote, non-contact and electrification removing of the foreign matter is achieved, the foreign matter removing speed is high, all the work is completed on the ground, and a worker does not need to carry out hazardous operation such as climbing a telegraph pole and being online and gets away from a high voltage electric field. The device has the image information collection and processing function, can check the foreign matter removing effect in real time, and has the good visualization experience, and laser light can avoid a high voltage transmission line when emitted and will not damage the cable.

The invention discloses an array typed laser scanner comprising a base, a control driving system and a plurality of auxiliary mirrors arranged in array. The auxiliary mirrors are arranged on the same direction and are fixed on the base; gaps are reserved between two adjacent auxiliary mirrors, so that the auxiliary mirrors do not touch each other when inclining to each other; the control driving system is connected with piezoelectric drivers in Ns of the auxiliary mirrors to realize open loop control of deflecting angles of reflectors. A multiple light ray scanning method is utilized to connect a plurality of small scanning fields into a big scanning field, and is capable of ensuring scanning angles and scanning frequency at the same time, each auxiliary is capable of scanning independently and multiple task detection is realized. With the array typed laser scanner, space utilization rate is greatly increased, and scanning angles are improved; the array typed laser scanner is characterized in that the array typed laser scanner is fast in driving speed, high in control accuracy, no mechanical abrasion, compact in structure, high in space utilization rate and good in stability, small in volume, light in weight, high in rigidity and is especially suitable for application of satellite and unmanned machine imaging laser radar.

The invention discloses a detection system and method used for motor stator winding. A starting signal drive device sends multi-phase alternating-current electric signals to an electromagnetic excitation device so that a first rotating magnetic field of the electromagnetic excitation device can be produced, an iron core of a stator to be detected is excited to generate a second rotating magnetic field, the second rotating magnetic field enables each phase of windings of the stator to be detected to generate induced electromotive force, a detection device connected with the line outgoing end of the stator to be detected detects the induced electromotive force generated by each phase of the windings and sends the induced electromotive force to a display device so that the induced electromotive fore of the line outgoing end of each phase of the windings of the stator to be detected can be displayed, the induced electromotive force generated by each phase of the windings of the stator to be detected and induced electromotive force of the same line outgoing end of the corresponding phase of the windings in a pre-stored standard sample stator are sequenced and compared, and whether line outgoing faults or wiring faults of the windings of the stator to be detected exist is judged. Due to the fact that a rotor matched with the stator to be detected does not need to be looked for during detection, convenience is improved; the situation that mechanical abrasion occurs due to rotation of the rotor cannot occur, and detection cost is reduced.

The invention relates to an electronic device for determining a first positional information and a second positional information regarding a user input object, such as at least one user hand or at least one stylus, the electronic device comprising: a touch-sensitive surface; contact-free detection means; and controller means that are operatively connected to the touch-sensitive surface and to the contact-free detection means; wherein the first positional information depends on where the user input object contacts the touch-sensitive surface, and wherein the second positional information depends on the spatial configuration of the user input object with regard to the touch-sensitive surface, characterized in that the controller means are adapted for simultaneously and / or alternately determining the first positional information via the touch-sensitive surface and the second positional information via the contact free detection means.

The invention relates to an integrated magnetic bearing control system and control method for a high-speed motor. The system comprises an upper computer and five control units; each control unit comprises a DSP controller, a signal isolation circuit, a power circuit (three-phase full bridge IPM), a signal conditioning unit and a sensor; the upper computer displays the displacement of a rotor in real time and can input given signals to the DSP controllers, when the rotor deviates from an equilibrium position, the displacement of the rotor deviating from the equilibrium position is detected through the sensors and converted into voltage signals, the voltage signals are fed back to the DSP controllers after passing by the signal conditioning units, and the DSP controllers output PWM control signals after algorithm operation and control power switch pipes in the power circuits to work to adjust the current value of a coil of an electromagnetic bearing to make the rotor stably suspended. Through the arrangement of each DSP controller and the corresponding three-phase full bridge IPM, not only the integration degree of the whole control system is high, but also the anti-interference capability of the magnetic bearing can be improved, and the service life of the bearing is prolonged.

The invention discloses a two-dimensional wind speed and direction test method through visual identification based on reflecting silk thread attitude angle, the innovation of the method is that related knowledge of machine vision and hydromechanics are combined, a reflecting silk thread which is a solid control model is used for transmitting visual information, according to visual information acquired by a CCD area-array camera, non- contact measurement is performed on the position and the attitude of the silk thread, a relation between spatial position variation and fluid velocity of the solid control model is established through mapping of two-dimensional image and three-dimensional Cartesian space information and a visual measurement system, so that the wind speed and direction can be indirectly measured through visual identification.

The invention relates to a method and device used for avoiding the failure of drill rod of a rotary drill rig, and in particular to an alarm method against the failure of drill rod of rotary drill rig. The method is characterized in that a detecting probe is arranged on an upper part of a buffer of the rotary drill rig; a sensed relation data signal E, which is equal to 1 when entering a sensing zone and equal to 0 when leaving the sensing zone, between the drill rod and a power unit is transmitted to a microprocessor; a displacement sensor which transmits a sensed displacement data C of the power unit to the microprocessor is arranged on a drill mast of the rotary drill rig; a present depth data A of a drill funnel of the rotary drill rig is inputted through an interface circuit of the drill funnel depth to the microprocessor; drill rod data B is inputted into the microprocessor; an output of the microprocessor is respectively connected with a red indicator H1 and a yellow indicator H2, and an alarm buzzer is connected with the red indicator H1 in parallel; the microprocessor sends out signals after judging different states according to the inputted data. Once encountering drill rod failure symptoms, the method and device can send out alarming signal so as to warn operators to deal with mechanic failures.

A novel magnetic drive oblique gear pair with an oblique air-gap magnetic field can be widely applied to the industrial drive field of wind power generation, electric cars, ship drive and the like with the requirement of direct driving. The novel magnetic drive oblique gear pair is characterized in that the inner hole of a stator of the magnetic drive oblique gear pair is conical internally; 2ps of stator permanent magnets 4 are distributed on an internally-conical stator iron core 3; a driving gear is conical externally; 2pr of driving gear permanent magnets 6 are distributed on an conical driving gear iron core 7; conical hollow driven gear ferromagnetic grids 5 for modulating the action of a space oblique air-gap magnetic field are mounted between the driving gear permanent magnets 6 and the stator permanent magnets 4; conical space oblique air gaps in coaxial distribution exist among the conical hollow driven gear ferromagnetic grids 5, the driving gear permanent magnets 6 and the stator permanent magnets 4 so as to form an air-gap magnetic field Bg of the magnetic drive oblique gear pair to pass along the conical space air gaps, thereby forming an oblique magnetic field of the magnetic drive oblique gear pair. During work, the power variable speed drive of the magnetic drive oblique gear pair is realized without mechanical contact and friction by utilizing the principle that N pole and S pole of a permanent magnetic material are attracted to each other based on different polarity.

The embodiment of the application provides a scanning device and a laser radar. The scanning device comprises a light source, a polarizer, a liquid crystal structure and an electrical structure; the light source emits a laser beam to the liquid crystal structure; the liquid crystal structure receives the laser beam, and reflects the laser beam through a reflecting plane of the liquid crystal structure, the reflected laser beam forms a light spot on a tested object plane, and the liquid crystal structure is located in an electric field. When the laser radar with the scanning device is used forperforming scanning measurement on to-be-tested object plane, the electrical structure forms the electric field by applying the voltage in the preset rule. on the liquid crystal structure; since the liquid crystal structure has a certain mobility, an internal molecule of the liquid crystal structure can produce corresponding deflection when the voltage is applied to the liquid crystal structure, the refractive rate of the liquid crystal structure reflecting plane is changed, thereby changing an exit direction of the laser beam after passing through the reflecting plane, and then changing the location of the light spot on the tested object plane, and realizing the scanning on the tested object plane. The device is higher in precision and has measurement repeatability, control flexibility and stability.

The invention provides a device for detecting cam profiles, which has the advantages of simple structure, high detection precision and higher efficiency. The device comprises a numerical control turntable, a linear motor, a laser measuring head, a grating scale displacement sensor, an encoder and an industrial personal computer, wherein the numerical control turntable is used for driving the cam to horizontally and coaxially rotate around a vertical mandrel; the linear motor is horizontally arranged on one side of the numerical control turntable; the laser measuring head is arranged on the active cell of the linear motor and at one side of the cam; the grating scale displacement sensor is used for measuring the horizontal displacement of the active cell; the encoder is used for detecting the rotation angle of the cam; and the industrial personal computer controls the numerical control turntable and the linear motor to act and obtains the outer profile data of the cam according to datameasured by the laser measuring head, the grating scale displacement sensor and the encoder.

The invention provides a vibration shielding type electric field sensor which comprises an elastic component, a flexible hinge, a piezoelectric stack, a base, shielding electrodes and induction electrodes, wherein the shielding electrodes and the induction electrodes are arranged pairwise, the X-direction end of the flexible hinge is fixed on the base, the induction electrodes are fixed on the base in an insulating manner, two ends of the piezoelectric stack are fixedly arranged on the inner walls of two sides in the X direction of the flexible hinge, the shielding electrodes are arranged at an outer end in the Y direction of the flexible hinge and press an outer surface in the X direction of the flexible hinge through the elastic component, moreover, the shielding electrodes are earthed and arranged above the induction electrodes arranged pairwise. In the invention, mechanical motion is generated on the basis of the electrostriction principle of a piezoelectric material and is amplified by the flexible hinge to push the earthed shielding electrodes to reciprocate periodically, induction charges on the induction electrodes change periodically, the induction charges are in direct proportion to an electric field, the change of the charges forms current, and the current is amplified by a subsequent circuit to obtain the relationship between the current and the electric field.

The invention discloses a wind speed measurement system and a method of three-dimensional space wind. The wind speed measurement system of three-dimensional space wind comprises a first ultrasonic wave sensor, four second ultrasonic wave sensors, four third ultrasonic wave sensors and a data processor, wherein each second ultrasonic wave sensor takes the first ultrasonic wave sensor as an originalpoint O and the four second ultrasonic wave sensors are uniformly arranged so as to form a first four-element arc array in an xoy plane; each third ultrasonic wave sensor takes the first ultrasonic wave sensor as the original point O and the four third ultrasonic wave sensors are uniformly arranged so as to form a second four-element arc array in an yoz plane; and the data processor is connectedto each second ultrasonic wave sensor and each third ultrasonic wave sensor respectively. In the invention, through a one-transmitting eight-receiving ultrasonic wave sensor array, wind speed and winddirection detection is performed, there is no rotation component, a reaction to the changes of wind information is sensitive, there is no mechanical wearing, maintenance cost is low, a service life is long, and then, the data processor is used to determine the wind speed of the three-dimensional space wind, an azimuth and a pitch angle, and rapid, accurate and high-precision performance is achieved.

The invention provides a power plant condenser steam jet and vacuumizing system with a pressure control function. The system comprises a steam turbine (1), a condenser (2), a condenser hot well (3), a power steam pressurizer (6), a steam ejector (11), a steam condenser (12), a water ring vacuum pump (14), a condensate discharge valve (8) of the steam condenser, a condensate drain pipeline water seal (17), a condensate pipeline liquid level switch (18), a pressure adjusting valve (13) on the inlet of the water ring vacuum pump, multiple control valves and pipelines, wherein the control valves and the pipelines are arranged among the parts. Due to the fact that pressure control of power steam, control of the liquid level after condensates flow back to the condenser hot well and inlet pressure control of the water ring vacuum pump are adopted, the vacuumizing system can maintain the maximum vacuum degree of the condenser, force of the condenser is improved, the vacuum degree of the condenser is improved, the heat consumption rate of the steam turbine is lowered, and coal consumption for unit power generation is lowered. The system is safe and free of maintenance, guarantees 100% of force and can operate stably for a long time. A pressure backflow adjusting system is arranged on the final-stage exhaust device, namely the water ring vacuum pump, so that it is guaranteed that the cavitation phenomenon of the water ring vacuum pump does not happen.

This invention discloses an active matrix LCD device with special proportion of width to length and its laser cutting process method, which can directly process square or any proportional TFT LCD device that are processed through the steps of breakdown, positioning, cutting, cracking, sealing and connecting.

The invention provides a detection method of a cam contour detection device which has the advantages of simple structure and high detection accuracy and efficiency. The cam contour detection device which is adopted by the detection method provided by the invention comprises a digital control rotary table, a linear motor, a laser measuring head, a grating ruler displacement sensor, an encoder and an industrial personal computer, wherein the digital control rotary table is used for driving a cam to be horizontally and coaxially rotated around a vertical mandrel; the linear motor is horizontallyarranged at one side of the digital control rotary table; the laser measuring head is arranged on the rotor of the linear motor and at one side of the cam; the grating ruler displacement sensor is used for measuring the horizontal displacement of the rotor; the encoder is used for detecting the rotation angle of the cam; and the industrial personal computer controls the motion of the digital control rotary table and the linear motor and obtains the outer contour data of the cam according to the data which is obtained by the laser measuring head, the grating ruler displacement sensor and the encoder.

The invention provides a multistage steam jet vacuum-pumping system with double backpressure steam condensers. The multistage steam jet vacuum-pumping system comprises a turbine (1), the first steam condenser (2), the second steam condenser (3), a power steam pressure stabilization tank (6), an exhaust silencer (10), a first steam jet device (11), a second steam jet device (12), a third steam jet device (3), a vacuum buffer tank (14), a first condenser (15), a second condenser (16), a high-pressure side air exhaust pipeline restriction orifice (19), and a plurality of control valves and a plurality of pipelines arranged between all the parts mentioned above. Due to the fact that the restriction orifice is arranged on the high-pressure side and the vacuum buffer tank is arranged in the position where the high-pressure side and the low-pressure side are communicated, the pressure difference between the high-pressure side and the low-pressure side is kept. High-temperature steam serves as power for the steam jet devices, output is stable, and the optimal vacuum can be kept for the steam condensers. High-pressure steam serves as power for the steam jet devices, no house supply is needed, the steam jet devices are static devices and almost free of maintenance, and maintenance cost can be reduced.

The invention discloses a unified-winding bearingless motor. The motor is characterized in that the motor comprises a stator and a rotor. Each two adjacent teeth arranged on the stator forms one pair; and for the two pair of opposite teeth arranged on the periphery of the stator based on a phase difference of 180 degree for each phase, one group of windings is arranged on one pair of teeth; and two sets of windings of each phase are driven by a drive module. Besides, two position sensors for measuring a deviation position of a rotor are arranged on the stator; and a 90-degree phase difference exists between the two position sensors. In addition, the motor also includes a drive control system connected with the drive module. According to the invention, the structure is simple; the rotor is suspended; no mechanical wearing phenomenon occurs; no mechanical bearing supporting is required; the hardware structure is simple; and a bridge shoot-through problem can be solved.

The invention relates to a power joint device. The device comprises a joint body, a power device and a measuring device; the measuring device comprises a first angular measuring device, the first angular measuring device comprises a first magnet and a first magnetic field induction circuit, the first magnet is connected with one end of a motor output shaft, and is close to a first motor cover plate, the first magnetic field induction circuit is arranged on the inner side of the first motor cover plate and is close to the first magnet, a motor rotates to drive the motor output shaft to rotate,and further drive the first magnet to rotate, and the first magnetic field induction circuit induces the rotating angle of the first magnet so as to measure the rotating angle of the motor. Through the first magnet and the first magnetic field induction circuit which are in the non-contact coupling manner, measuring of the motor rotating angle is achieved, mechanical friction losses are avoided, simpleness, lightness, thinness and low cost are achieved, compared with an existing integrated type encoder scheme, mechanical structural design complexity is greatly simplified, a magnetic field generated by the magnet is a static magnetic field, the environment interference influence is avoided, and reliability is high.