31results about How to "No magnetic field" patented technology

The invention discloses a rotary ultrasonic motor, which comprises a screw, a hold-down mechanism, a bearing, a rotor, a stator and a piezoelectric element. The screw is provided with the piezoelectric element, the stator, the rotor, the bearing and the hold-down mechanism in turn. The piezoelectric element, the stator, and the hold-down mechanism are fixed on the screw. One end of the stator adjacent to the rotor is a circular conical surface. One end of the rotor adjacent to the stator is a female conical surface matched with the circular conical surface. The invention also discloses the method to achieve the rotary ultrasonic motor. The motor has the advantages of direct drive, being well controlled, no noise, no magnetic field action and so on, and is in particular applicable for minitype rotary motion devices of small torsion and multi-rotor output.

The embodiment of the invention provides an inductance determination method and device for a permanent-magnet synchronous motor, which can measure the q-axis inductance and the d-axis inductance more accurately and improve the detection precision. The method comprises the following steps: obtaining the first rotating speed of the measured motor, which is controlled by a motor dynamometer to run; in the first rotating speed state, obtaining a first d-axis current, wherein the first d-axis current is the d-axis current obtained through the measurement when a motor controller controls the q-axis current of the measured motor to be zero, and the line voltage of the measured motor to be the first voltage; obtaining a second rotating speed; in the second rotating speed state, obtaining the second d-axis current, wherein the second d-axis current is the d-axis current obtained through measurement when the motor controller controls the q-axis current of the measured motor to be zero, and the line voltage of the measured motor to be the first voltage; according to the first rotating speed, the first d-axis current, the second rotating speed and the second d-axis current, calculating the first d-axis inductance of the measured motor; according to the first d-axis inductance, calculating the first q-axis inductance of the measured motor. The inductance determination method and device, provided the invention, can be applicable to the technical field of detection.

The invention relates to the technical field of film material preparation, and discloses an ion beam assisted deposition system. A plasma cathode electron gun based on pseudo spark discharge is adopted as the ion beam assisted deposition system; unlike a typical ion beam assisted deposition device, the plasma cathode electron gun has multiple electrode gaps, and therefore electron beams for the hollow cathode ionization process and the subsequent conduction ionization process can be effectively generated; the energy and the beam current density of the electron beams of a hollow cathode phase are controller through different breakdown methods, the iron mass resolution is high enough, and therefore ions of hydrogen atoms and ions of hydrogen molecules can be separated; the ion energy is low and ranges from several eV to several hundred eV; the ion beam current is high enough, and therefore it is guaranteed that the ion beam assisted deposition process can be conducted; the ion beam current is wide, the diameter of the beam current is 10 mm, the hydrogen ion current density is 1 microampere per square centimeter, and therefore a deposition experiment can be conducted on a large-area substrate; mass selection on the ions only depends on an electric field and does not depend on a magnetic field, the structure is compact, and therefore the atomic beam current or active gas molecule ion beam current can be effectively controlled.

The invention discloses a non-radiative percutaneous spine positioning method based on optical scanning automated outline segmentation matching. Through a clinical image data processing system, clinical CT (computed tomography) is imported, a three-dimensional model of the back outline and the spine of a human body can be reconstructed, and a three-dimensional model of the back outline of the human body is scanned, checked and reconstructed through structured light / TOF (Time Of Flight) optical scanning equipment, finally, a three-dimensional coordinate relationship between the spine model andthe optical scanning model of the back outline of the human body is displayed and output through the matching calculation of a three-dimensional image processing system. On the basis of optical scanning equipment, the method disclosed by the invention realizes the matching and the positioning of the spine model and the optical scanning model of the back outline of the human body, and has the advantages of no radiation, small land occupation, high scanning speed, visual display results, high repeatability and the like.

The present invention is one intelligent torsional oscillation controlling rod based on tile-shaped piezoelectric sheet. On the two ends of the hollow circular rod, connecting blocks are mounted forconnection with other members, and in one end of the rod, there are piezoelectric torsional driver and piezoelectric sensor mounted successively. When one end produces torsional deformation or torsional oscillation relatively to the other end, the piezoelectric sensor detects the signal and the signal is fed to the piezoelectric torsional driver via a reverse amplifier, so that the piezoelectrictorsional driver produces one reverse torsional moment to inhibit the deformation or oscillation. The rod has integrated sensing and driving control functions, and has the advantages of compact structure, good control characteristic, low power consumption, high inhibition effect, etc. and may be used in space robot and other places.

The invention discloses a bistable permanent magnet three-phase circuit breaker, which comprises a base, a casing, a load-side three-phase wire connector and a power supply-side three-phase wire connector, a casing is arranged on the surface of the base, a coil is arranged inside the casing, and a coil is arranged on the surface of the casing. For the upper wiring tube and the lower wiring tube, one side of the shell is provided with a load-side three-phase wire joint, and the other side of the shell is provided with a power-side three-phase wire joint. The upper holding permanent magnet is installed inside the shell, and a power supply is installed next to the upper holding permanent magnet. Side static contact, next to the static contact on the power supply side, there is a lower holding permanent magnet, next to the lower holding permanent magnet, a sliding iron core, under the sliding iron core, a load side moving contact, and next to the load side moving contact, a power supply side contact. The beneficial effect is that: the present invention no longer needs to maintain the electromagnets to consume energy after the state transition, and there is no noise and magnetic field effects that may be emitted when the electromagnets work continuously, and is environmentally friendly and energy-saving, and the switching speed is fast.

The invention discloses a driving-force-controllable four-channel piezoelectric steering engine and belongs to the field of a piezoelectric actuator. Through bending deformation of axial pre-compression simply supported bimorphs, the driving force between a stator and a rotor of the piezoelectric steering gear is changed, thereby realizing independent operation of four rudders. A frame structure formed by four rods attached with ceramic sheets serves as the stator to provide the driving force, which drives the rotor and rudder surfaces to rotate; the piezoelectric bimorphs are arranged betweenthe rotor and a base; and pre-pressure and friction between the stator and rotor are changed by deformation of the bimorphs, so that the problem that when the four rudders are driven by the same stator, the four rudders must act simultaneously is solved, and the four rudders can be controlled separately. The axial pre-compression simply supported bimorphs are utilized as a pre-pressure fine-tuning mechanism to change the driving force between the stator and the rotor; the four-channel piezoelectric steering engine is simple in structure and easy to realize, improves electromechanical conversion efficiency, solves the problem that multi-channel independent actuation cannot be realized since the piezoelectric actuator adopts one stator, and realizes multi-channel independent actuation.

The invention discloses a spherical multi-degree-of-freedom piezoelectric actuator-based warhead deflection device, which comprises a deflectable warhead, a multifunctional screw post, a projectile body, a deflection connecting mechanism, a spherical multi-degree-of-freedom piezoelectric actuator and a rolling mechanism, wherein the spherical multi-degree-of-freedom piezoelectric actuator comprises a ball rotor, a base and three stator mechanisms with a pre-tightening guide function; and under the action of adjusting nuts and disk springs, three stator elastic bodies and the ball rotor are in tight contact through friction gaskets. When certain voltage signals are supplied to three piezoelectric ceramic plates respectively, traveling waves can be stimulated on the surfaces of the stator elastic bodies; under the action of pre-tightening force, the ball rotor is driven to rotate around any axis which passes through the ball center through friction between a stator and the rotor; and the deflectable warhead is driven to deflect through the deflection connecting mechanism. The warhead deflection device disclosed by the invention is simple and compact in structure, high in output torque and high in response speed; electromagnetic interference is avoided; and multi-degree-of-freedom adjustment can be achieved.

The invention discloses a spherical multi-degree-of-freedom piezoelectric actuator-based warhead deflection device, which comprises a deflectable warhead, a multifunctional screw post, a projectile body, a deflection connecting mechanism, a spherical multi-degree-of-freedom piezoelectric actuator and a rolling mechanism, wherein the spherical multi-degree-of-freedom piezoelectric actuator comprises a ball rotor, a base and three stator mechanisms with a pre-tightening guide function; and under the action of adjusting nuts and disk springs, three stator elastic bodies and the ball rotor are in tight contact through friction gaskets. When certain voltage signals are supplied to three piezoelectric ceramic plates respectively, traveling waves can be stimulated on the surfaces of the stator elastic bodies; under the action of pre-tightening force, the ball rotor is driven to rotate around any axis which passes through the ball center through friction between a stator and the rotor; and the deflectable warhead is driven to deflect through the deflection connecting mechanism. The warhead deflection device disclosed by the invention is simple and compact in structure, high in output torque and high in response speed; electromagnetic interference is avoided; and multi-degree-of-freedom adjustment can be achieved.

The invention discloses a multi-degree of freedom piezoelectric actuator with built-in stators. The piezoelectric actuator comprises a ball rotor, three stator mechanisms with same structures, an output shaft, a pre-tightening structure, rolling mechanisms, a shell and a base. The three stator mechanisms with same structures are arranged in the ball rotor and are symmetrically distributed around the ball rotor. The three stator mechanisms are arranged at intervals of 120 degrees. The pre-tightening structure provides pre-tightening force for the three stator mechanisms at the same time, so that the pre-tightening force between the three stator mechanisms and the rotor to be uniform. Moreover, when communication signals of certain frequency are provided for three piezoelectric ceramic pieces, traveling waves will be formed at the tooth end on the surface of the stator elastomer. Under the effect of the pre-tightening force, the stators contact closely, through friction effect between the stators and the rotor, the ball rotor is driven to rotate, and a rotation speed and a torque are output through the output shaft. The multi-degree of freedom piezoelectric actuator with the built-in stators provided by the invention has simple and compact structure and high space utilization rate, is not interfered by electromagnetism and can move in multiple degrees of freedom.

The invention provides a security protection device. The security protection device comprises a fuse base and an H-shaped piezoelectric ultrasonic driver, wherein the fuse base comprises a base body and a side cover, and a side square groove opening is formed in the base body and serves as a movement space of the driver; a fire transmission hole is formed in the lower bottom face of the base body,the side cover is arranged at the opening of the square groove, and ceramic pieces are arranged on the side wall opposite to the square groove opening and the inner wall of the side cover respectively. The H-shaped piezoelectric ultrasonic driver is further provided with a fire transmission channel matched with the fire transmission hole in the vertical beam.

The invention discloses an anti-explosion self-temperature-control heating tape and a preparation method thereof. The anti-explosion self-temperature-control heating tape comprises wires, a PTC, a heating wire layer, an inner sheath, a metal shielding layer and an outer sheath from inside to outside, the number of the wires is two, the two wires are arranged in parallel, and the PTC is tightly wrapped outside the two wires. The heating wire layer is prepared by tightly wrapping a heating wire outside the PTC in a winding manner, the inner sheath is tightly wrapped outside the heating wire layer, the outer layer of the inner sheath is a net-shaped woven metal shielding layer, and the outer sheath is tightly wrapped outside the metal shielding layer. According to the anti-explosion self-temperature-control heating tape and the preparation method thereof, the anti-explosion self-temperature-control heating tape is reasonable in structural design, uniform in heating, high in heating efficiency and excellent in flexibility, is free of pipeline damage, is capable of tracing heat for a long distance and is anti-explosion, anti-bending, anti-oxidation, waterproof and anti-electric shock; the whole-line self-adaptive temperature control effect of the heating tape is achieved through the self-adaptive temperature control characteristic of PTC, and the preparation method is simple.

The invention discloses a non-magnetic femtosecond electron source device with an adjustable convergence angle. The non-magnetic femtosecond electron source device comprises a vacuum cavity, and a photoelectric cathode, a grid electrode, an anode, an electric convergent mirror and an electric objective lens which are arranged in the vacuum cavity, have overlapped central axes and are sequentiallyarranged at intervals, the photoelectric cathode is used for generating femtosecond pulse electron beams under the excitation of femtosecond laser pulses; a voltage is applied between the photocathodeand the anode for accelerating the electron beam; the voltage of the electric convergent mirror and the voltage of the electric objective lens are adjustable, and the electric convergent mirror and the electric objective lens are used for converging the accelerated electron beams twice to obtain parallel beams or convergent beam electronic pulses with actually required convergence angles. According to the invention, the electric convergent mirror and the electric objective lens are adopted to focus the pulsed electron beam twice, and the voltage of the electric convergent mirror and the electric objective lens is flexible and adjustable, so that pulsed electron beams with different convergence degrees and beam spot sizes can be obtained. Moreover, the size of the electron source device can be greatly reduced by adopting the electrostatic lens, the structure is simple, and the quality, flexibility and controllability of the required electron beam can be further improved.

The invention provides a safety device, which includes a fuze base and an H-shaped piezoelectric ultrasonic driver; the fuze base includes a base and a side cover, and the base is provided with a side square slot opening as a movement space for the driver, and The fire transmission hole is set on the bottom surface, the side cover is set at the opening of the square slot, ceramic sheets are respectively set on the side wall opposite to the opening of the square slot and the inner wall of the side cover; the H-shaped piezoelectric ultrasonic driver is also set on the vertical beam to match the fire transmission hole fire channel.

The invention relates to a variable frequency vibration method capable of shortening response time and a vibration actuator. The vibration actuator comprises a hollow shaft, a vibration output interface and an annular stator elastomer, the hollow shaft is sleeved with the annular stator elastomer, the vibration output interface is fixedly arranged at the top of the hollow shaft through screws, thehollow shaft locks the annular stator elastomer in the axial direction, and meanwhile the annular stator elastomer generates pre-pressure to abut against the vibration output interface; a friction material is laid on the contact surface of the annular stator elastomer and the vibration output interface; and partitioned polarized piezoelectric ceramics are laid on the end face, away from the vibration output interface, of the annular stator elastomer. A plastic wear-resistant sleeve is arranged between the stator elastomer and the hollow shaft, and the plastic wear-resistant sleeve is also arranged on the hollow shaft in a sleeving manner. The problem that a traditional motor is slow in response time can be solved, and the response time of the vibration actuator designed based on the vibration method is greatly prolonged.

The invention discloses a rotary ultrasonic motor, which comprises a screw, a hold-down mechanism, a bearing, a rotor, a stator and a piezoelectric element. The screw is provided with the piezoelectric element, the stator, the rotor, the bearing and the hold-down mechanism in turn. The piezoelectric element, the stator, and the hold-down mechanism are fixed on the screw. One end of the stator adjacent to the rotor is a circular conical surface. One end of the rotor adjacent to the stator is a female conical surface matched with the circular conical surface. The invention also discloses the method to achieve the rotary ultrasonic motor. The motor has the advantages of direct drive, being well controlled, no noise, no magnetic field action and so on, and is in particular applicable for minitype rotary motion devices of small torsion and multi-rotor output.

The invention discloses a step-down conversion circuit controller over-current detection circuit, which comprises a first control switch, a second control switch, a filter circuit and a comparator, wherein the first end of the first control switch is grounded, and the second end of the first control switch is connected with the input end of the filter circuit and the first end of the second control switch; the second end of the second control switch is connected with the first end of the comparator, the second end of the comparator is grounded, the third end of the comparator serves as a signal output end, the first control switch control end is used for receiving control signals, the second control switch control end is connected with the controllable power supply end VDD, and the filter circuit output end is grounded. The invention provides the step-down conversion circuit controller over-current detection circuit, which is high in precision.

The invention discloses a non-magnetic femtosecond electron source device with adjustable convergence angle, comprising: a vacuum cavity, and a photocathode, a grid, an anode, an electric converging mirror and Electric objective lens; the photocathode is used to generate femtosecond pulsed electron beams under the excitation of femtosecond laser pulses; a voltage is applied between the photocathode and the anode to accelerate the electron beams; the voltage of the electric convergence mirror and the electric objective lens can be adjusted. The accelerated electron beams are converged twice to obtain parallel beams or converging beam electron pulses with the actual required convergence angle. The invention adopts an electric convergence mirror and an electric objective lens to focus the pulsed electron beam twice, and the voltage of the electric convergence mirror and the electric objective lens can be flexibly adjusted, so that pulsed electron beams with different convergence degrees and beam spot sizes can be obtained. In addition, the electrostatic lens used in the present invention can greatly reduce the size of the electron source device, has a simple structure, and can further improve the quality and flexibility of the required electron beams.

The invention relates to the technical field of film material preparation, and discloses an atom deposition method. The atom deposition method comprises the steps that neutral gas such as argon gas orhelium gas is introduced into a plasma chamber; hydrogen gas is introduced into a hollow cathode; a heating wire made of rhenium is galvanized, voltage is applied between an anode and the hollow cathode, the anode is kept to be grounded, negative voltage is applied to the hollow cathode and gradually increased to minus 55 kV from minus 2 kV, breakdown is generated between the anode and the hollowcathode, and H2<+> ions and H<+> ions are generated; sinusoidal voltage U<RF1>, sinusoidal voltage U<RF2> and sinusoidal voltage U<RF3> which have the frequency of 2 MHz, the different amplitudes andthe voltage peak values not exceeding 1.5 Kv are applied to quadrupole rods; direct-current potential U<DC1> is applied to a first quadrupole rod group, and direct-current potential U<DC3> is appliedto a third quadrupole rod group; the ions generated in the step 3 pass through the quadrupole rods and then enter a second quadrupole rod group, the ions are converged or deflected, and ion beams pass through a stainless steel grid mesh; a molecular sample to be deposited is evaporated through an electron beam evaporation source; and parameters of a displacement platform are adjusted to enable asample platform to be driven to rotate at a constant speed, and therefore a film grows more uniformly.

The invention discloses a multi-degree of freedom piezoelectric actuator with built-in stators. The piezoelectric actuator comprises a ball rotor, three stator mechanisms with same structures, an output shaft, a pre-tightening structure, rolling mechanisms, a shell and a base. The three stator mechanisms with same structures are arranged in the ball rotor and are symmetrically distributed around the ball rotor. The three stator mechanisms are arranged at intervals of 120 degrees. The pre-tightening structure provides pre-tightening force for the three stator mechanisms at the same time, so that the pre-tightening force between the three stator mechanisms and the rotor to be uniform. Moreover, when communication signals of certain frequency are provided for three piezoelectric ceramic pieces, traveling waves will be formed at the tooth end on the surface of the stator elastomer. Under the effect of the pre-tightening force, the stators contact closely, through friction effect between the stators and the rotor, the ball rotor is driven to rotate, and a rotation speed and a torque are output through the output shaft. The multi-degree of freedom piezoelectric actuator with the built-in stators provided by the invention has simple and compact structure and high space utilization rate, is not interfered by electromagnetism and can move in multiple degrees of freedom.

The invention relates to a novel heating material as well as a preparation method and application thereof, and belongs to the field of novel materials. The preparation method comprises the steps of preparing raw materials into primary raw materials, then preparing the primary raw materials into secondary raw materials, soaking the secondary raw materials and a diluted catalyst in a solution, then carrying out first-time roasting, soaking a product obtained after first-time roasting and a low-purity catalyst in the solution, then carrying out second-time roasting, soaking the product obtained after the second roasting and a high-purity catalyst in the solution, and then roasting for the third time. Under the normal temperature condition, the heating temperature of the heating material reaches 520 DEG C, the heating temperature loss is about 4% in the cold environment of -30 DEG C, and 6-8 g of compression energy is in contact with the surface of the heating material to generate atom adsorption collision to generate a high-temperature infrared reactor which can continuously heat for ten hours or above.

The invention discloses a piezoelectric intelligent torsional vibration control rod. The lower end of the hollow round rod is equipped with the first connecting block, the annular piezoelectric torsion driver, and the second connecting block sequentially from top to bottom, and the upper end of the hollow round rod is equipped with the third connecting block. Sensors are mounted on the inner or outer surface of the hollow rod. When there is torsional deformation or torsional vibration at the connection end relative to the connection end, the sensor detects that the signal is amplified in reverse and sent to the ring piezoelectric torsion driver, and the ring piezoelectric torsion driver generates a torsional torque that is opposite to the torsion deformation to suppress its deformation or vibrate. The rod integrates sensing and drive control, and has the advantages of compact structure, good control characteristics, low power consumption, and good vibration suppression effect. It can be widely used in the operating rods and truss structures of space robots, and in the field of active vibration control where torsional vibration needs to be suppressed (isolated).

The invention belongs to acupuncture needles for traditional Chinese medicine, in particular to a fluid-controlled acupuncture needle. The fluid control acupuncture needle includes a flow tube, the outer side of the flow tube is provided with a heat dissipation layer, and the outer surface of the heat dissipation layer is provided with a coating; the top of the coating is the needle head; the flow tube is divided into a fluid inflow tube and a fluid outflow tube; the fluid inflow The tube communicates with the fluid outflow tube. The fluid-controlled acupuncture needles of the present invention can realize two functions of heating and cooling, and can realize fine temperature adjustment control such as the heating value and heating position of the whole needle. The fluid-controlled acupuncture needles can adopt the fluid elastic resonance flutter mechanism according to the treatment needs. , combined with the special behavior of the binomial flow, a needle motion control scheme based on minimum energy control is designed. The fluid-controlled acupuncture needle of the present invention can realize integrated control of temperature control, vibration control and temperature-vibration coupling by setting the temperature and flow rate of the fluid. Since there is no electromagnetic field interference during the working process of the whole needle, the safety factor is higher.

The invention discloses a water surface fishing device. The water surface fishing device comprises a folding fishing net, a floating ball, a balancing weight, a long-distance hydraulic control system and an expansion link; the folding fishing net is composed of a central shaft, six supporting rods and six auxiliary supporting rods and an umbrella type framework layout structure is formed; a bolt is installed at the middle part of an iron and connected to a hydraulic switch; a pulling-back rope is installed at one side of the round iron; the long-distance hydraulic control system is composed of a hose, a hydraulic press and the hydraulic switch; the hose is filled with liquid, and the two ends of the hose are respectively equipped with one hydraulic press; one end of the hose is installed on the hydraulic switch and the other end of the hose is held in a hand. According to the water surface fishing device provided by the invention, the long-distance hydraulic control system is used, so that long-distance control is realized in the absence of electrical equipment; besides, no magnetic field and noise exist, so that the fishing net is more reliable and hidden; the water surface fishing device has the advantages of being novel in design, high in practicability and easy in promotion and application.

The invention relates to a miniature multi-degree-of-freedom ultrasonic motor, comprising a top cover, a sleeve, a base, a rotor, a stator, a retaining ring and a spring; the sleeve is connected with the top cover and the base, and the rotor is connected with the base The through hole in the center of the upper surface of the top cover is in spherical contact, and the through hole is coupled with the rotor. The diameter of the through hole is smaller than the diameter of the rotor, thereby realizing the pre-positioning of the rotor and the stator in the vertical direction. The stator The top of the spring is in contact with the spherical surface of the rotor, the spring is installed in the retaining ring, and the lower end is in contact with the base, and the retaining ring supports the stator. The miniature multi-degree-of-freedom ultrasonic motor of the present invention has the advantages of small size, simple structure, low speed and high torque, can directly drive a manipulator, and is not affected by a magnetic field.

The invention relates to the field of coded locks, and particularly provides a mechanical coded lock. The mechanical coded lock comprises a shell; a spring bolt rotationally connected to the shell; a transmission plate connected into the shell in a sliding manner and used for controlling the spring bolt to rotate in the shell; a shifting plate connected in the shell in a sliding manner and used for pushing the transmission plate to slide in the shell; a coded lock cylinder fixedly connected to the shell and used for controlling the shifting plate to slide in the shell; and a spring bolt switch fixedly connected to the shell and used for controlling the transmission plate to slide in the shell. The mechanical coded lock is suitable for high-cold, high-temperature and high-pressure areas, does not generate a magnetic field, does not influence products in a packaging box, and meanwhile has the advantages of high reliability and high stability.

The invention discloses a two-stage sandwich type traveling wave piezoelectric centrifugal pump and a driving method thereof. The two-stage sandwich type traveling wave piezoelectric centrifugal pumpcomprises a base, a stator, a shell, an upper rotor, a lower rotor, a connecting shaft, a forward-closed impeller, a reverse-closed impeller, a first connecting pipe fitting, a second connecting pipefitting and four piezoelectric ceramic modules. During work, the four piezoelectric ceramic modules are excited to drive a particle on the inner side of annular teeth to perform micro-amplitude elliptical motion, the upper rotor and the lower rotor are driven to further drive positive and negative closed impellers to rotate in the same direction, fluid obtains energy for the first time through thelower closed impeller, and then enters the upper closed impeller through a pipeline to obtain energy for the second time, so that the fluid is pressurized twice. The bending type contraposition laminating suction device is simple and compact in structure, easy to seal and miniaturize, capable of accurately controlling flow, fast in response, low in noise, free of electromagnetic interference andelectromagnetic interference, and capable of powering off and self-locking; and compared with a conventional piezoelectric pump, the piezoelectric pump has the advantages of large flow and large output fluid pressure.

The invention discloses a birotor rotating piezoelectric motor, and belongs to the field of piezoelectric actuators. The motor drives rotors to rotate by controlling a flexible beam to generate different deformation modes, so that the independent control on the speed and the output torque of the two rotors of the motor is realized respectively. According to the invention, a piezoelectric ceramic is pasted on the surface of a flexible beam with driving feet to form a piezoelectric stator; alternating-current voltages with different phases and frequencies are respectively applied to the plurality of piezoelectric ceramics; the inverse piezoelectric effect of the piezoelectric ceramic is utilized to excite the stator to generate different deformations; therefore, the ends of the driving feeton the surface of the flexible beam generate elliptical motion trails to drive the two coaxial rotors to rotate, four sets of stators are evenly distributed and installed on the base, and the independent control over the rotating speed and the output torque of the two rotors is achieved through different the driving modes of the four sets of stators.