223 results about "Constant torque" patented technology

The invention discloses a magnetic adjusting assembly, a motor, an electric drive system and a vehicle, and the magnetic adjusting assembly comprises a magnetic conductive part which is suitable for being movably disposed on one side of a rotor in the radial direction, so as to adjust the magnetic flux passing through the rotor. According to the magnetic adjusting assembly, the magnetic flux passing through the rotor is adjusted to change the magnetic flux of the magnetic flux short-circuit loop formed by the magnetic conductive piece and the rotor, so that the adjustment of the magnetic flux of the main magnetic field is realized, the adjustment is convenient, and the motor applying the magnetic adjusting assembly has the advantages of a constant torque area and a constant power area; and a constant-power operation region and a high-efficiency region are effectively widened while high torque density and power density are ensured.

The application provides a permanent magnet eddy current governor for constant torque load heavy load starting and a control method thereof, and belongs to the technical field of permanent magnet eddy current transmission speed regulation. The permanent magnet eddy current governor comprises a conductor cylinder, a magnet disc, a transmission shaft and a magnet disc axial traction mechanism. The conductor cylinder is connected with a motor input shaft, the inner wall of the conductor cylinder is fixed with two groups of annular conductor sleeves, the annular conductor sleeves are divided into starting zones and rated working zones in the axial direction, and the two groups of starting zones are separated by an idle zone. The transmission shaft passes through the rear end of the conductor cylinder, the front end is located in the conductor cylinder, and the rear end is connected with a load output shaft. The magnet disc is installed on the shaft rod of the transmission shaft located in the conductor cylinder, and the outer ring surface of the magnet disc is uniformly distributed with permanent magnets. The magnet disc axial traction mechanism is used for driving two magnet discs to synchronously approach or move away from the center of the idle zone. The application can be used for motor idle starting, heavy load controllable starting, load balancing, speed regulation operation and unloading overload protection of constant torque load.

The invention relates to the technical field of hydraulic control, and discloses a hydraulic motor constant torque self-adaptive PID (Proportion Integration Differentiation) control system which comprises a controller and a hydraulic driving unit, the controller performs frequency domain separation on the pressure signal by using a signal preprocessing module, and extracts an average pressure difference representing the driving force and a ripple amplitude representing the fluid rigidity; the state observation module estimates an instantaneous volume elastic modulus based on the ripple amplitude, corrects a compression item in a flow continuity model by using the elastic modulus, and calculates an instantaneous leakage coefficient of the motor in real time; the self-adaptive control module establishes dynamic mapping of PID gain and physical parameters, the proportional gain is adjusted by using a leakage coefficient to match system damping, the integral gain is adjusted by using a volume elastic modulus to adapt to inherent frequency, and a control instruction is synthesized by combining feedforward compensation. According to the method, the problem of model mismatch caused by oil characteristic change and motor abrasion is effectively solved, and the whole-life-cycle control precision of the system is improved.

The invention relates to the technical field of cable recycling, in particular to an electric wire and cable skin stripping device and a method thereof.The electric wire and cable skin stripping device comprises a sleeve base, a plurality of cutter assemblies arranged below the sleeve base, a clamping conveying mechanism below the sleeve base and a skin stripping mechanism, each cutter assembly comprises a blade and a pressure sensing module, and the cutting angle of each blade can be adjusted; the pressure sensing module detects the cut-in pressure of each blade in real time and feeds back and adjusts the cut-in angle of the blade; a speed difference control system is arranged between the clamping conveying mechanism and the skin stripping mechanism and comprises a constant torque driving unit of a front-section clamping roller and a differential driving unit of a rear-section shifting roller, and the two units monitor the rotating speed through an encoder and maintain the speed ratio of 1: 3. Through dynamic compensation and closed-loop pressure control and in combination with a differential stripping mechanism with the speed ratio of 1: 3, high-precision lossless stripping of the cable skin is achieved, the cutting-conveying-stripping integrated process is integrated, and the single-time stripping efficiency is improved.

A high-efficiency continuous rotating hydraulic joint and a control system comprise a swash plate mechanism used for driving the joint to rotate, the swash plate mechanism comprises a swash plate and a power output shaft, and the swash plate is driven by a plurality of multi-cavity hydraulic cylinders to achieve forward and reverse rotation of the power output shaft. The multiple multi-cavity hydraulic cylinders are evenly distributed below the swash plate with the power output shaft as the center, composite piston rods of the multi-cavity hydraulic cylinders and the power output shaft are distributed in parallel, the jacking ends of the composite piston rods are connected with ball bearing seats through ball bearings, and the jacking ends of the composite piston rods are assembled on the swash plate in a sliding mode through the ball bearing seats. The control system comprises an inner ring control system and an outer ring control system, different load matching control methods are adopted corresponding to different rotation angle positions of the power output shaft, fine adjustment of the proportional throttle valve is combined, high-precision constant torque control of the device in a continuous rotation motion state can be achieved, and the device is high in reliability and high in reliability. And high-precision variable-torque control can be realized to match the variable load torque.

The utility model discloses a light warning device for road and bridge construction, which comprises a warning lamp and a support, the bottom of the warning lamp is fixedly connected with the top of the support, the bottom of the support is fixedly connected with a mounting shell, the surface of the mounting shell is movably connected with a fixing shell, and the bottom of the fixing shell is fixed on the surface of a road and bridge. Through cooperative use of the limiting device, the limiting block, the sliding block, the spring and the limiting groove, the problems that an existing warning lamp can be installed around a construction site to ensure the visibility of a construction area, a bolt installation mode is usually adopted during installation, the construction site is located outdoors, the environment is complex, the warning lamp is prone to damage and needs to be replaced, and the construction cost is low are solved. The problems that bolts are prone to rusting and aging due to too heavy moisture, the difficulty of replacement of the warning lamp is increased due to aging of the bolts, torque needs to be continuously adjusted when the bolts are installed, the installation quality is high due to the fact that the bolts are too tight or too loose, but the warning lamp used for road and bridge construction is not provided with a component convenient and fast to replace are solved.

The invention relates to a permanent magnet synchronous motor full-working-condition design method considering driver constraints, and belongs to the technical field of permanent magnet synchronous motor design, and the method comprises the following steps: building a mathematical model of a permanent magnet synchronous motor; calculating the electromagnetic relation of the motor in the constant torque maximum torque / current control mode; calculating the electromagnetic relation of the motor under the constant-power weak magnetic control; and according to the model and the electromagnetic relationship, carrying out full-condition design on the motor. Based on the mathematical model and the control mode of the permanent magnet synchronous motor, by analyzing the influence of the direct current bus voltage and the inverter circuit output current on the maximum rotating speed, the maximum torque and the current density of the motor, the constraint condition of the driver performance on the motor design can be determined. According to the method, whether the electromagnetic performance of the design scheme reaches the standard or not can be calculated and analyzed more quickly, and the design efficiency is improved.

The invention provides a seabed sand liquefaction test system, which relates to the technical field of underground or underwater structures and comprises a mounting platform, a buoyancy system, an excitation system, a probe rod and a penetration system. Wherein all the systems are installed on an installation platform, and the platform is connected with an overwater facility through a cable. The excitation system and the penetration system are stacked and connected through a floating connecting structure, and the probe rod sequentially penetrates through the excitation system and the penetration system; the penetration system is provided with a penetration power unit, a transmission mechanism, a symmetrical double-head rocker arm and a feeding wheel, the transmission mechanism is connected with a torque retainer in series, and a reversing mechanism is arranged and can drive the rocker arm to move in a mirror image mode, so that the feeding wheel clamps the feeler lever to achieve penetration or lifting. The floating connection isolates vibration and prevents resonance and data noise; the torque retainer realizes fixed-torque clamping and is simplified into a single-power unit, so that the cost is reduced, and faults are reduced; the rocker arm can release the probe rod, retention is achieved without auxiliary equipment, lifting, slipping and clamping stagnation are prevented, and the testing efficiency, reliability and data precision are improved.

The invention discloses a reciprocating type passenger ropeway constant deceleration control system, and relates to the technical field of brake control. According to the method, the first-stage constant deceleration braking mode and the second-stage constant torque braking mode are set, analysis is carried out through the second-stage braking conversion algorithm, the deceleration abnormal index, the speed tracking abnormal index and the response abnormal index are output, then the mode abnormal total value is obtained, the braking state is judged, self-adaptive mode switching is achieved, and the braking efficiency is improved. Constant braking deceleration is maintained, swinging of a hanging box is reduced, comfort of passengers is improved, brake rubber abrasion is reduced, meanwhile, regional debugging is not needed, and the operation difficulty of a construction site is reduced; hydraulic loop parameters are analyzed through a failure judgment logic algorithm set by the hydraulic redundancy protection module, a loop abnormal total value is output, and hydraulic loop switching is carried out based on the loop abnormal total value; and through visual display of the fault memory interaction module, the safety redundancy of the braking system is improved, fault tracing and maintenance are facilitated, and the running reliability of the cableway is guaranteed.

The invention discloses a control precision improvement method for constant torque control of an ECM motor, and the method comprises the following steps: S1, measuring a plurality of groups of data in a constant torque control interval of a set torque T of the ECM motor through a dynamometer, calculating a damping coefficient B of the ECM motor, and storing the damping coefficient B; s2, performing constant torque control on the ECM motor based on a vector control mode, and converting into a current given value iq of a q axis according to a torque T set by a user; s3, measuring the real-time rotating speed omega of the motor, and calculating a compensation current value iq0 by using the real-time rotating speed omega of the motor and the damping coefficient B; s4, calculating a target current value iqout = iq-iq0 of the q-axis, performing q-axis current loop PI control by using the target current value iqout of the q-axis, and returning to the step S3; the motor can be matched with various air conditioner load models, the number of motor parts is greatly reduced, and great convenience is brought to customers.

The invention discloses a control method of a permanent magnet auxiliary synchronous reluctance motor and a related assembly, and relates to the field of motor control, the target torque current of the permanent magnet auxiliary synchronous reluctance motor is determined, and the torque current of the permanent magnet auxiliary synchronous reluctance motor is adjusted to be the target torque current; adjustment of the excitation current of the motor is divided into a constant torque operation area and a weak magnetic operation area, when the motor is in the constant torque operation area, the excitation current is adjusted to be the target excitation current corresponding to the maximum torque current ratio, and it is guaranteed that the output voltage of the motor is smaller on the premise that the working condition is not affected; the control of the motor is more efficient and energy-saving; and when the motor is in the weak magnetic operation area, jointly adjusting the excitation current according to the target excitation current and the excitation current increment so as to control the direct-current voltage in the steady-state equation of the permanent magnet auxiliary synchronous reluctance, ensure that the output voltage of the motor is constant, and realize high-dynamic response in the weak magnetic operation area.

The invention relates to the technical field of servo loading, and discloses a rotating speed control method of a servo loading system, which comprises the following steps: constructing the servo loading system; the servo motor is driven to work at a constant torque; establishing a disturbance estimation model under servo loading disturbance; rotating speed data of the tested motor are obtained in real time, rotating speed errors are input into a speed PID controller, a basic control signal is generated, disturbance compensation and error response are fused, and a master control signal is constructed; pID parameters of a speed PID controller are optimized and adjusted on line through an improved fast exploration random tree algorithm; and fixing the speed PID parameter according to an error stability criterion, keeping the current control output, and readjusting the PID parameter when the disturbance trend changes. According to the invention, the rotating speed control precision and the operation stability of the servo loading system under complex disturbance conditions can be improved.

The adjustable constant-force clamping jaw comprises a torsion input shaft, a torsion output shaft, a constant-force output mechanism and a force adjusting mechanism, the torsion input shaft is in transmission connection with the output end of a first motor, and the torsion output shaft is rotationally connected to the end, away from the torsion output shaft, of an outer frame; the torsion input shaft and the torsion output shaft rotate coaxially, the two ends of the constant force output mechanism are connected with the torsion input shaft and the torsion output shaft correspondingly, the constant force output mechanism is used for flexibly connecting the torsion input shaft and the torsion output shaft and outputting constant torsion to the torsion output shaft, and the force adjusting mechanism is connected with the torsion input shaft. And the force adjusting mechanism is rotationally connected with the torsion output shaft, and the force adjusting mechanism is used for adjusting the torsion output to the torsion input shaft by the constant force output mechanism, and through the technical scheme, the problem that in the prior art, a constant force clamping jaw is difficult to clamp through set clamping force is solved.

The utility model discloses an adjusting platform spherical hinge locking structure, and belongs to the technical field of mechanical design, the adjusting platform spherical hinge locking structure comprises an adjusting platform, a spherical hinge posture adjusting and fixing structure, an oil way assembly and a control module, the spherical hinge posture adjusting and fixing structure comprises a spherical hinge, an oil cylinder and a universal link head, and after the adjusting platform completes platform posture adjustment through the spherical hinge, the oil way assembly is fixed to the adjusting platform; the control module controls the oil way assembly, then the multiple sets of oil cylinders around the spherical hinge are controlled to be stretched under the condition that the torque is not changed, it is guaranteed that the multiple oil cylinders reach the designated stretching positions at the same time, locking of the spherical hinge is completed, the complete locking state of the spherical hinge can be achieved, one or more spherical hinges can be locked in any posture, and the locking effect is good. Under the condition that a plurality of spherical hinge supports are locked, the posture of the spherical hinge supports is not changed at will, the locking state is stable, and the posture of the spherical hinge supports cannot be changed under the condition of external force.

A system and method for actively suppressing aircraft wheel brake vibrations determines whether the wheel speed has changed suddenly, thereby preventing landing gear yaw vibrations and cornering difficulties caused by asymmetric brake pressure due to sudden wheel speed changes. By segmenting the aircraft's low-speed taxiing speed and limiting brake pressure based on the speed of each segment, longitudinal vibrations at low speeds are avoided, reducing the probability of vibration at low speeds by 1E-4. During high-speed braking, a wheel deceleration rate control range is established based on the braking torque characteristics, and brake pressure is controlled to achieve constant torque control, avoiding brake vibrations caused by torque variations during high-speed braking due to anti-skid operation. Longitudinal and yaw acceleration sensors are added to the wheel brake system. Braking pressure is limited based on the yaw and longitudinal vibration frequency signals, ensuring that no brake-induced vibrations occur during the entire braking process.

The invention discloses a torque closed-loop aircraft brake control system which comprises the following steps: acquiring a target brake torque through a brake control unit, and receiving torque feedback data acquired by a torque sensor; based on the target braking torque, current magnitude is generated through a feedback control method according to torque feedback data; a stop valve is opened through the magnitude of current, corresponding brake pressure is generated through a brake servo valve, and the brake device is subjected to near-constant-torque brake state control according to the brake pressure; and the brake control unit receives wheel speed data acquired by the wheel speed sensor, judges according to the wheel speed data, and controls whether the brake servo valve outputs safety current or not to generate corresponding brake pressure according to a judgment result.

A carbon tape box drive structure is characterized by comprising a base, a winding motor, a transmission gear set, a winding shaft, a first connecting sleeve, a winding shaft, a second connecting sleeve, a constant torque mechanism and a damping mechanism, the constant torque mechanism is arranged on the winding shaft, and the carbon tape is always in a taut state; the damping mechanism is arranged on the winding shaft, and the winding shaft generates damping when rotating. The application discloses a thermal transfer printer. At the beginning and end of the rotation of the carbon tape, the constant torque mechanism and the damping mechanism cooperate to make the carbon tape supplied by the winding core always in a taut state, has a certain tension, and does not appear loose and collapsed, ensures that the printing points are more regular and uniform, and guarantees the printing quality.

An electrical connector system may include a first conductor including a first conductive material; a second conductor comprising a first conductive material; a fastener configured to couple the first conductor to the second conductor; and a constant torque material comprising a second electrically conductive material. A constant torque material may be disposed in electrical communication with the first conductor and the second conductor. The constant torque material may include carbon nanotubes disposed on a substrate.

This application relates to the field of robot motion control and safety protection, and discloses a method for preventing hand pinching in a robot servo system. This method monitors the motor status in real time. When suspected interference is detected, a composite detection signal consisting of a base holding voltage, a DC preload component, and an AC detection component is injected into the drive motor. Through open-loop feedforward control, the feedback current is collected and the same-frequency component is extracted. The phase lag difference relative to the injected signal is calculated. Based on the magnitude of the phase lag difference, the system identifies whether the obstructing object is made of rigid or flexible material, and then executes a graded protection strategy of constant torque limiting or variable stiffness impedance control, respectively. This invention utilizes the principle of motional impedance to establish a mapping relationship between electrical phase and mechanical impedance, solving the problem of difficulty in distinguishing contact materials under low-speed conditions, achieving active compliance and safe escape, and improving the safety of human-machine interaction.

The invention belongs to the technical field of shock absorber assembly, and provides shock absorber spring nut constant-torque assembly equipment which comprises a support, fixing equipment and a shock absorption device, the fixing equipment is installed on the support, the shock absorption device is connected into the fixing equipment, a screening mechanism is installed on one side of the fixing equipment, and the screening mechanism is arranged on the other side of the fixing equipment. A mounting mechanism is mounted on one side of the bracket; a third cylinder slides towards the top of a fourth cylinder to support a second cylinder, at the moment, the second cylinder inclines in the direction of a [-shaped block and drives a storage box to incline in the same direction, and in the inclination process of the storage box, nuts in the storage box move back and forth and are clamped in nut openings, so that the storage box is convenient to use. And if the inner diameter of the telescopic rod is the same as that of the telescopic rod II, the telescopic rod moves downwards along the nut opening, and if the telescopic rod is different from the telescopic rod II, the telescopic rod slides through the nut opening, so that nuts with different sizes enter the nut boxes with corresponding sizes, the nuts with different sizes are distinguished, and the workload of workers is reduced.

The present application relates to a kind of permanent magnet shielding motor vector control energy efficiency optimization method considering magnetic field lagging phase angle, belong to permanent magnet shielding motor control field.It is characterized by: by analyzing shield sleeve eddy current effect, the analytical expression of magnetic field lagging phase angle is derived using electromagnetic field theory;The lagging phase angle is introduced into permanent magnet flux linkage term to be corrected, and the eddy current loss of shield sleeve and stator iron loss are combined into equivalent iron loss component, and a system controllable loss model is constructed;Under the constraint of constant torque, the analytical expression of total controllable loss about direct-axis current is derived and the optimal direct-axis current given value is solved.The actual application introduces angle compensation in the coordinate transformation link of vector control system, and the optimal direct-axis current given value is sent into current regulator, the accurate decoupling of dq axis current is realized, the total loss of motor is reduced, so as to improve the overall efficiency of motor control system.

The invention provides a hybrid excitation magnetic circuit structure, a motor with the structure and a control method of the motor. According to the hybrid excitation magnetic circuit structure, basic magnetic flux is provided through a permanent magnet rotor assembly, the magnetic flux is dynamically adjusted through an electro-magnetic winding assembly, and superposition enhancement or partial counteracting of a main air gap magnetic field can be achieved only by switching the direction of electro-magnetic current; the output torque of the motor is obviously enhanced; and second-direction current is conducted in a constant power area to counteract part of magnetic flux and expand the speed regulation range of the motor, so that various working condition requirements can be met, and wide-range efficient operation is realized.

The application discloses a new energy automobile short shaft performance test process and belongs to the technical field of automobile part detection. The process comprises the following steps: step one, sample clamping; step two, paint spraying and marking; step three, constant torque test: a driving mechanism and a driven mechanism control the relative constant torque of two clamps and synchronously rotate; step four, result comparison; step five, dynamic torque test; step six, simulation heating test; step seven, starting torque test; step eight, emergency stop torque test; step nine, fatigue torque test; and step ten, static torque test. The application can comprehensively evaluate the performance of the short shaft under actual working conditions by the different states and environments of the new energy automobile short shaft in the use process, such as temperature change, working load fluctuation and the like. The process is completed by adopting an integrated structure, the short shaft does not need to be turned over and clamped repeatedly in the detection process, and the errors caused by multiple clamping can be avoided.

The invention discloses a hydraulic dynamometer control system and method based on a servo adjusting valve, and belongs to the technical field of marine power device testing. The system comprises a dynamometer body, a servo adjusting water inlet valve, a drainage valve, a high-precision weighing device, a rotating speed monitoring device, an intelligent controller and a human-computer interaction interface. A servo motor with micron-order precision is adopted to drive a valve, and a double-closed-loop PID control algorithm and a self-adaptive adjusting technology are combined, so that accurate control over the load characteristics of the hydraulic dynamometer is achieved. The system supports three working modes of constant torque, constant rotating speed and propeller characteristics, and has the characteristics of high response speed, high control precision (torque fluctuation + / -0.15%), high automation degree and the like. The technical problems that a traditional hydraulic dynamometer is low in control precision and slow in response, depends on manual operation and the like are solved, the hydraulic dynamometer is particularly suitable for performance testing of a high-power marine diesel engine and a dual-fuel engine, and the testing efficiency and reliability are remarkably improved.

A method (100) for calibrating the offset angle (PhiO) of a field orientation regulator of a motor (210) between the angle signal (W) of a position sensor (220) and the direction of the rotor flux (RF), comprising the steps of: periodically changing (120) a current vector (Is) along a constant torque line; determining (130) a rotational speed signal (n_t) of the position sensor (220) of the motor (210); and calibrating (140) the offset angle (PhiO) based on the determined rotational speed signal (n_t).

The utility model discloses a constant torque limiter in the field of constant torque limiters, which comprises a first shaft barrel, an abutting plate, a mounting disc, a bearing, a second shaft barrel, a limiting mechanism and an adjusting mechanism, and the abutting plate is fixedly connected to the outer side of the first shaft barrel through the adjusting mechanism. The mounting disc is fixedly connected to the right portion of the outer side wall of the first shaft barrel and located on the right side of the abutting plate, the bearing is fixedly connected to the right portion of the outer side wall of the first shaft barrel, and according to the constant-torque limiter, when overload occurs, the notches extrude the balls, the balls move leftwards, the abutting plate is extruded, the abutting plate moves leftwards, and the constant-torque limiter is fixed to the outer side wall of the first shaft barrel. When the positioning rod is aligned with the fixing cavity, the positioning rod is embedded in the fixing cavity through reset extension of the reset spring, the abutting plate is positioned, the situation that the ball repeatedly enters and exits the interior of the notch under the action of the extrusion spring is avoided, impact on the ball is reduced, abrasion is reduced, and the service life of the device is prolonged.

The building energy-saving door and window structure comprises two first frames and two second frames, limiting grooves are formed in the inner walls of the front ends of the first frames, fixing rods are fixedly connected to the interiors of the limiting grooves, springs are arranged outside the fixing rods in a sleeved mode, sliding blocks are connected to the exteriors of the fixing rods in a sliding mode, and the sliding blocks are connected to the interiors of the first frames in a sliding mode. And the front end of the sliding block is fixedly connected with a mounting seat, the front end of the mounting seat is rotationally connected with a hydraulic cylinder, the driving end of the hydraulic cylinder is fixedly connected with a baffle, the rear side of the baffle is rotationally connected to the front end of one second frame, and a plurality of mounting assemblies are arranged on the inner side of the first frame. According to the mosquito net, buffering can be achieved when the installation base moves, meanwhile, the use angle of the baffle is convenient to adjust, the pull rope can be pulled to slide outside the first constant-torque rolling shaft and the second constant-torque rolling shaft, then the magnet can magnetically attract and fix the magnetic attraction rod, and mosquitoes are prevented from entering the mosquito net.

The embodiment of the invention relates to a tension control method and device and a cutting and stacking all-in-one machine, through combination of a PID (Proportion Integration Differentiation) feedforward control algorithm and an acceleration tracking feedforward control algorithm, compared with an existing constant torque control algorithm, the tension control method has the characteristics of small static error, small hysteresis quality and high tension stability, and is suitable for large-scale production. And the yield of battery cell manufacturing is greatly improved.

The invention discloses a permanent magnet auxiliary synchronous reluctance motor sensorless control method capable of effectively reducing high-frequency torque pulsation. Aiming at high-frequency torque ripple caused by a traditional high-frequency signal injection method, by changing the high-frequency signal injection direction, under MTPA control, a corresponding high-frequency response current vector is tangent to a constant torque curve, and the high-frequency torque ripple can be effectively reduced. In order to solve the problem of position estimation errors caused by cross coupling, the rotor position is estimated through a phase-locked loop after the d-axis inductance Ld, the q-axis inductance Lq and the dq-axis mutual inductance Ldq which are measured in an offline mode are combined to be processed, and the influence of the cross coupling effect on position estimation is eliminated.

The invention discloses a motor, an electric drive system and a vehicle, the motor comprises a rotor, the rotor comprises a rotor body and a magnetic conductive part, and the magnetic conductive part extends along the axial direction of the rotor body and extends out of the axial end part of the rotor body; and the magnetism adjusting assembly is used for changing the radial opposite area of the magnetism adjusting assembly and the magnetism conducting part. According to the motor provided by the invention, the magnetic conductive part extends along the axial direction of the rotor body and extends out of the axial end part of the rotor body, and the magnetic flux adjusting assembly and the rotor can form a magnetic flux short-circuit loop, so that the magnetic flux of the magnetic flux short-circuit loop can be changed by changing the radial opposite area of the magnetic flux adjusting assembly and the magnetic conductive part; therefore, the magnetic flux of the main magnetic field is adjusted, the magnetic flux is convenient to adjust, the use requirement of the motor can be met, the motor has the advantages of a constant torque area and a constant power area, and a constant power operation area and a high-efficiency area are effectively widened while high torque density and power density are ensured.