9246 results about "Rotor (electric)" patented technology

An electric tilt rotor aircraft and a control system thereof. The aircraft comprises a fuselage (1), wings (2), horizontal stabilizers (3) and a landing gear system (4), wherein the fuselage (1) comprises a fuselage body and a rudder (10) for controlling and adjusting a flight direction of the aircraft; the wings (2) each comprise an integral wing box section (21), an aileron (22), a wing left / right nacelle (23) and a supporting rod left / right nacelle (24); left and right supporting rods are integrated on front sides of the integral wing box sections (21); the wing left / right nacelle (23) is connected to the integral wing box section (21) by means of a tilting shaft (25), and the wing left / right nacelle (23) rotates around the tilting shaft (25); the horizontal stabilizers (3) each comprise a horizontal stabilizer box section (31) and a horizontal stabilizer left / right nacelle (32); the horizontal stabilizer left / right nacelle (32) is connected to the horizontal stabilizer box section (31) by means of the tilting shaft (25), and the horizontal stabilizer left / right nacelle (32) rotates around the tilting shaft (25); the landing gear system (4) uses a tricycle landing gear system, and comprises a nose landing gear (41) and two main landing gears (42); brake systems are integrated in the main landing gears (42); and the nose landing gear (41) plays a role in balancing and controlling direction. By using the electric tilt rotor aircraft, urban air traffic can be realized.

A method of operation is provided. During this method, a first power system of an aircraft powerplant is operated to provide a first quantity of power and / or torque to drive rotation of a propulsor rotor. A second power system of the aircraft powerplant is tested during the operating of the first power system. The second power system is configured as or otherwise includes an electric machine. The testing of the second power system includes: signaling the second power system to use the electric machine to provide a second quantity of power and / or torque to further drive the rotation of the propulsor rotor; determining an operational parameter of the aircraft powerplant following the signaling; and evaluating operability of the second power system by comparing the operational parameter to a threshold.

A motor assembly is described and includes a housing; a plurality of motors disposed within the housing; and a drive shaft comprising a plurality of interconnected drive shaft segments, wherein each one of the drive shaft segments is driven by a different one of the motors connected to the drive shaft segment via an integrated overrunning clutch.

The invention provides an aircraft, and relates to the technical field of aircrafts. The aircraft comprises a fuselage, tilting rotors and fixed rotors. Wings are arranged on two sides of the fuselage, and an empennage is arranged at the tail of the The tilting rotors are symmetrically arranged on at least one of the empennage, the wings and the fuselage, each tilting rotor comprises a first propeller and a first electric engine, the first electric engines are in transmission connection with the first propellers, and the first electric engines are integrated electric engines. The fixed rotors are symmetrically installed on the wings on the two sides of the fuselage, each fixed rotor comprises a second propeller and a second electric engine, the second electric engines are in transmission connection with the second propellers, and the second electric engines are distributed electric engines. The aircraft can solve the problems that the size, weight and heat dissipation efficiency of an existing electric engine are difficult to consider, and efficient flight of the aircraft is difficult to achieve.

The invention discloses a small-size rotor test bed, a parameter matching method and a control angle resolving method, belongs to the technical field of aviation aerodynamic wind tunnel tests, and aims to solve the problems of an existing small-size rotor test bed. The test bench comprises a main shaft tilting system, the main shaft tilting system comprises a base, a tilting electric cylinder, two rotating shaft seats, a tilting table and a tilt angle sensor, the two rotating shaft seats are arranged on the left side and the right side of the base respectively, shaft heads are arranged on the left side and the right side of the tilting table respectively, and the two coaxial shaft heads are in corresponding rotating fit with the two rotating shaft seats respectively. A rear cylinder cover of the tilting electric cylinder is hinged to the front side of the base, a piston rod of the tilting electric cylinder is arranged upwards and hinged to the front side of the tilting table, and a tilt angle sensor is arranged on the tilting table. The test rotor wing is connected with the power transmission system, the power transmission system is connected with the tilting table, and technical support can be provided for measurement of rotor wing performance, blade surface pressure and blade bending moment load of the small unmanned aerial vehicle.

The invention relates to an integrated oil cooling hub speed reduction electric wheel which comprises a motor, a planetary gear speed reducer and a bearing system which are arranged in the axial direction, and the planetary gear speed reducer is arranged in the motor and integrated with a brake. The bearing system comprises a rotor supporting bearing used for supporting a motor rotating system and a hub bearing used for supporting a wheel rotating system, the motor, the planetary gear reducer and the rotor supporting bearing are designed in an integrated oil cooling mode, and cavities where the motor, the planetary gear reducer and the rotor supporting bearing are located are communicated with one another. Cooling liquid cools and lubricates the motor, the planetary gear reducer and the rotor supporting bearing at the same time. Compared with the prior art, the electric wheel is compact in structure, the number of sealing pieces of the electric wheel can be reduced on the premise that the electric wheel has good structural rigidity, the axial size of an electric wheel assembly is reduced, and the electric wheel has the advantages of being good in cooling effect and easy to maintain.

The invention provides a double-robot collaborative welding dynamic compensation system which is characterized by comprising two welding robots slidably mounted on two ground rails, a six-axis laser welding seam locating device is mounted on each welding robot, and a machine vision assembly is arranged in each laser welding seam locating device. A stand column cantilever used for driving the welding robot to move is installed on the ground rails in a sliding mode, a rotary table position changing machine is arranged between the two ground rails, a powder concentrator rotor is placed on the rotary table position changing machine, and a control system is electrically arranged beside the welding robot. The double robots cooperatively work through the laser distance measuring sensor and the visual assembly, rapid concentric alignment of a rotor, blade angle calibration and real-time tracking of a welding seam are achieved, high-precision positioning of the laser distance measuring instrument is combined with intelligent image processing of the visual module, the accuracy of welding path planning is remarkably improved, deviation caused by manual intervention is avoided, and the working efficiency is improved. The two robots cooperate with each other, so that the welding efficiency is improved by more than 40% compared with a single-machine system.

The invention discloses a detection system for operation abnormity of an electric drive axle motor of a new energy commercial vehicle, and belongs to the technical field of motor abnormity detection. The system comprises a multi-source sensing module, a dynamic coupling analysis module, a harmonic distortion traceability module, a dynamic stability analysis module, an anomaly fusion decision module, a self-adaptive threshold generation module and a fault tree reasoning module. Multi-dimensional signals such as current, vibration, temperature and a rotor position angle are synchronously acquired through the multi-source sensing module, and multi-physics field collaborative analysis is performed through the dynamic coupling analysis module and the harmonic distortion traceability module, so that the fault diagnosis accuracy of operation abnormity of the electric drive axle motor of the new energy commercial vehicle is improved; the problem that in the prior art, detection only depends on a single physical quantity, and misjudgment or missing detection is easily caused by interference is solved.

An autonomous flying device achieving a large payload and a long continuous flight time and also accurately adjust position and orientation while flying. The device includes: a main rotor and the like that provide main thrust; a sub rotor and the like that controls the orientation; an engine that generates energy for rotating the main rotor and the like and the sub rotor and the like; and an arithmetic control device that controls rotation of the sub rotor and the like. Also, the main rotor and the like are rotated by being drivingly connected to the engine, whereas the sub rotor and the like are rotated by motors driven by electric power generated from generator and the like operated by the engine. Further, when orientation control to tilt the fuselage is performed, the arithmetic control device increases the output distribution ratio of the sub rotor to above the output distribution ratio of the sub rotor when hovering is performed.

An electric brake for a wheel rotor having a brake pad includes a housing with a passage. A piston assembly in the passage includes a spindle and a piston. The spindle is rotatable to cause the piston to move axially relative to the brake pad. A drive assembly includes a motor. A gear train is connected to the motor and the spindle. A coupling mechanism is coupled to the gear train and has a first condition enabling torque transmission from the motor to the spindle to axially move the piston to apply braking force to the brake pad. The coupling mechanism has a second condition disabling torque transmission from the motor to the spindle is prevented which permits the piston to retract and reduce the braking force on the brake pad without stopping or reversing the motor.

The invention relates to a high-proportion new energy power grid frequency rotational inertia control method and system. The method comprises the following steps: establishing a virtual rotor motion equation; performing frequency droop control on the active power to obtain an active-frequency droop equation; the active-frequency droop equation is substituted into the virtual rotor motion equation, and a virtual speed regulator control model is obtained; meanwhile, an output reactive power regulation equation of the new energy grid-connected current converter is obtained; establishing an equivalent impedance equation; based on the Kirchhoff voltage law and introducing a dq-axis current coupling component, obtaining a mathematical model of the output voltage of the VSG control system in a dq two-phase coordinate system; the output power of the VSG is further obtained; analyzing a transient energy change process during VSG frequency regulation by adopting an energy composition function; according to the relation between the current angular frequency and the initial angular frequency, the frequency change rate is introduced to represent the virtual inertia, and the self-adaptive virtual inertia is obtained; and the adaptive virtual inertia is substituted into the virtual rotor motion equation to obtain a high-proportion new energy power grid frequency rotational inertia control equation.

The utility model discloses a test turret, a battery electrical property high-speed detection device and a battery electrical property high-speed detection system. The test turret comprises a turret main body, the turret main body comprises a first rotating body and a second rotating body which are sequentially arranged along a first direction, the first rotating body is provided with a plurality of product limiting structures, and the product limiting structures are used for limiting a battery on the first rotating body; the cam is in a fixed state, and the cam is provided with a forward stroke area and a return stroke area; and the multiple detection probe assemblies are arranged on the second rotating body, each detection probe assembly corresponds to at least one product limiting structure, and when the detection probe assemblies rotate along with the rotating tower body, the forward stroke area and the return stroke area of the cam are sequentially matched with the detection probe assemblies. According to the utility model, the electrical performance of a plurality of batteries is tested while the batteries are conveyed and transferred, so that the high-speed transfer and the performance detection of the batteries are synchronously carried out, and the detection efficiency of products is further improved.

The invention provides an eddy current sensor, a detection device and an electric driving system, and the sensor comprises an eddy current rotor, one end of which is connected with a rotating shaft of a to-be-detected motor and rotates synchronously; one end of the printed circuit board assembly is an electromagnetic induction area, the exciting coil and the receiving coil are arranged in the electromagnetic induction area, the receiving coil is distributed on the inner side of the exciting coil, the other end of the eddy current rotor is close to the electromagnetic induction area to form a preset air gap distance, and the eddy current control module is arranged at the other end of the printed circuit board assembly. The eddy current control module is connected with the excitation coil to form a high-frequency oscillation magnetic field and is connected with the receiving coil to receive the induced electromotive force. The design is compact, the size is greatly reduced, light weight is achieved, and the installation space and the manufacturing cost are reduced.

The invention relates to the technical field of electric power systems, in particular to an electric power system inertia evaluation method, device, equipment and medium based on a gradual difference method, and the method comprises the steps: carrying out the calculation through employing the gradual difference method for solving a frequency change rate after disturbance in the electric power system inertia evaluation; on the basis of the frequency change rate, an inertia estimation value is calculated by using a physical model derived from a rotor motion equation, and the actual inertia of the system is calculated by using an inertia theoretical value formula; constructing a neural network, dividing a training set and a test set, taking an output result of the physical model as input of the neural network, and evaluating a difference value between an inertia calculation value and a theoretical value by using the trained neural network; and obtaining a final power system inertia evaluation result by using the evaluated difference value and an inertia estimation value calculated by a physical model. According to the method, the inertia of the power system can be quickly and effectively evaluated through a physical model and data model combined mode, and the problem that the evaluation precision of a physical model is not enough is solved.

The invention relates to the technical field of electric vehicle transmission and control, in particular to an electric vehicle speed reducer parking motor position feedback system. The system aims at solving the problems that the position feedback precision is reduced, the reliability is insufficient and the redundancy is deficient in a severe environment in the existing scheme. According to the system, through redundancy design of a main position sensing module (a magnetoelectric encoder) and an auxiliary position sensing module (an inductive sensor) and in combination with a multi-source data fusion module (based on Kalman filtering), anomaly detection and fault tolerance, position prediction and compensation and a temperature compensation and self-adaptive calibration mechanism, accurate feedback of the position of the parking motor rotor is achieved. According to the system, the accuracy and robustness of position feedback and the reliability of the system can be remarkably improved, the service life of a parking mechanism is prolonged, and the parking safety is improved.

Drive unit for a vehicle that can be operated by muscle power and / or motor power, in particular an electric bicycle, eBike, pedelec or S-Pedelec, comprising a rotor, a rotor shaft, a first bearing and at least one further bearing, and a shaft, wherein the drive unit has at least a single-stage worm gear or worm gear drive, wherein a worm is non-rotatably connected to the rotor shaft and has at least one helical thread, and a worm wheel which is non-rotatably connected to the shaft and is in mesh with the worm.

The invention relates to a current transformer (1) for transmitting current to the rotor of an electric machine, comprising a rotor module (11) which is at least partially rotationally symmetrical about an axis of rotation (DA), wherein the rotor module (11) has at least two rotor grinding wheels (12a, 12b) which are designed in an annular shape and a stator module (13), wherein the stator module (13) has at least two counter grinding wheels (14a, 14b) which are designed in an annular shape, wherein the central axes of the counter grinding wheels (14a, 14b) are coaxial to each other and to the axis of rotation (DA) and the mean diameter of a first counter grinding wheel (14a) corresponds to the mean diameter of the first rotor grinding wheel (12a) and the mean diameter of a second counter grinding wheel (14b) corresponds to the mean diameter of the second rotor grinding wheel (12b).The stator module (13) comprises at least one actuating element (15) which presses the counter grinding wheels (14a, 14b) at least temporarily in the direction of the axis of rotation (DA) against the rotor grinding wheels (12a, 12b). The invention further relates to an electric machine and a method for adjusting a current transformer (1) during the operation of an electric machine.

The invention relates to a wheel-paddle-leg integrated water-land-air multi-purpose robot which comprises a robot body, a foldable rotor wing device, four wheel-leg structures and a control unit, the foldable rotor wing device is installed on the robot body and can be unfolded when working and folded when not working, and the four wheel-leg structures are installed on the periphery of the robot body respectively. Each wheel-leg structure is composed of a leg structure and a wheel paddle, the upper end of the leg structure is connected with the machine body, and the lower end of the leg structure is connected with the wheel paddle; the control unit is arranged in the machine body and electrically connected with the foldable rotor devices, the leg structures and the driving units of the wheel paddles so as to switch three different working modes of air movement, ground movement and underwater movement. The robot has a water-land-air multi-habitat function and is high in maneuverability, high in environment adaptability and wide in application range.

The invention relates to a magnetic suspension air separation expansion machine system and an operation method thereof. The system comprises a base, a magnetic suspension bearing assembly, a rotor assembly and a control module. The magnetic suspension bearing assembly is arranged on the base, comprises an expansion end radial magnetic suspension bearing, a brake end radial magnetic suspension bearing and an axial thrust magnetic suspension bearing, and is used for supporting radial and axial forces of the rotor assembly; the rotor assembly is arranged in the machine body and connected with the machine body through the magnetic suspension bearing assembly, and non-contact suspension is achieved. The control module is electrically connected with the magnetic suspension bearing assembly and used for controlling the magnetic suspension bearing assembly to suspend the rotor. The operation method comprises the steps of self-checking before starting, electrifying to suspend the rotor, starting the air compressor to pressurize, adjusting flow to drive the expansion impeller, carrying out split-flow cooling on gas, and collecting data in real time to maintain stable suspension of the rotor. The device has the advantages of high efficiency, stability, energy conservation and the like and is suitable for the field of air separation.

A drive unit for a vehicle includes an electric motor, an output shaft, and a housing. The electric motor includes a rotor shaft having an inner surface with a hollow accessible via an opening at an axial end of the rotor shaft and an outer surface opposite the inner surface. The output shaft extends into the hollow through the opening. The housing houses the electric motor and defines a fluid flow path for fluid. The housing has a collar portion about the output shaft, a first holding portion on a first axial side of the collar portion and having baffles that are circumferentially offset from each other, a second holding portion on a second axial side of the collar portion opposite the first axial side, such that the collar portion is positioned axially between the first and second holding portions, and conduits extending between the first and second holding portions.

The invention relates to a separately excited electric machine (FEM) for a traction drive (TA) of an at least partially electrically powered motor vehicle (KFZ), comprising a rotor shaft (RW) of a rotor (RO) to which a shaft end section (WEA) adjoins, wherein the shaft end section (WEA) has a first opening (EO) and a second opening (ZO) spaced apart from the first opening (EO) in an axial direction of the rotor (RO), a potting body (VK) arranged in the shaft end section (WEA) in which an electrically conductive connecting element (VE) is embedded at least partially, wherein the connecting element (VE) has a distal first end (DEE) and a distal second end (DZE), and the distal second end (DZE) can be guided through the second opening (ZO).a slip ring module (SRM) arranged on a distal end section DE of the shaft end section (WEA) with a slip ring (SR) and a connecting section (VA) arranged on the slip ring (SR), which is electrically conductively connected to the distal first end (DEE) of the connecting element (VE), and a bearing device (LE) which sits on an outer lateral surface (AM) of the shaft end section (WEA).

An unmanned aerial vehicle includes a plurality of rotors, a plurality of electric motors each configured to drive a respective one of the plurality of rotors, a power source, and a controller configured or programmed to control supply of first electric power from the power source to the plurality of electric motors and supply of second electric power from the power source to an external implement, and control operation of the plurality of electric motors. Upon detecting an abnormality in equipment included in the unmanned aerial vehicle, the controller is configured or programmed to stop the supply of the second electric power to the implement and maintain the supply of the first electric power to the plurality of electric motors to execute flight using the plurality of rotors.

A method for operating a steering system of a vehicle, wherein the steering system comprises a steering mechanism and at least one electric motor cooperating with the steering mechanism, and wherein a stiffness of a steering assembly of the steering mechanism and / or play in the steering mechanism is determined includes determining the stiffness of the steering assembly and / or play in the steering mechanism. The steering mechanism is brought into a defined test position and / or blocked in the test position and the electric motor is actuated with an excitation signal, and the stiffness of the steering assembly and / or play in the steering mechanism is determined in that, during the actuation of the electric motor with the excitation signal, a motor torque of the electric motor and a rotor orientation angle of the electric motor is monitored and a change in the motor torque is evaluated according to the rotor orientation angle.

The utility model discloses a superfine powder jet mill which comprises a base, a crushing tank, a crushing component and a feeding component, and the crushing tank is mounted above the base. The crushing assembly is arranged, under the arrangement of a blocking net, materials are prevented from falling to the position close to a supersonic nozzle, crushing of the supersonic nozzle is affected, or the supersonic nozzle is blocked, the height of a cleaning brush and the height of an air nozzle can be adjusted through an electric push rod, and under the arrangement of the cleaning brush and the air nozzle, a grading rotor can be cleaned; under the arrangement of an air compressor and a supersonic nozzle, the materials entering the crushing tank are accelerated to impact and collide with crushing teeth repeatedly, superfine crushing of the materials is achieved, a first motor is used for driving a worm to rotate, the worm rotates to drive a worm gear to rotate, the worm gear rotates to drive a vertical rod to rotate, and the vertical rod rotates to drive the grading rotor to rotate; and the vertical rod rotates to drive the crushing wheel to rotate, and under the cooperation of crushing teeth, the materials are efficiently and fully crushed, so that the overall processing efficiency is improved.

The invention provides an electrical automation control system and method. The method comprises the steps that multi-source heterogeneous data in the operation process of a wind driven generator is collected; performing feature coupling processing on the multi-source heterogeneous data to obtain dynamic association features among different state parameters during power generation of the motor rotor; determining stability margins of different control loops in the wind driven generator based on the time-varying characteristic of each dynamic correlation characteristic, and performing cooperative compensation on each control signal in the wind driven generator based on all the stability margins to obtain a multi-stage compensation control signal of the wind driven generator; according to the interference gradient determined by the multi-source heterogeneous data, the cooperation coefficient of each compensation control signal in the multi-stage compensation control signals is adjusted; and performing cooperative control on each control loop based on the multi-stage compensation control signal and the adjusted cooperative coefficient of each compensation control signal. According to the scheme provided by the invention, different control loops in the wind driven generator can be cooperatively controlled under the influence of the dynamic coupling relationship of the different control loops.

An axle assembly for a vehicle includes a banjo axle housing having a central portion that defines a receiving space, a first beam that extends from the central portion in a first axial direction and that defines a first beam hollow in communication with the receiving space, and a second beam that extends from the central portion opposite the first beam in a second axial direction and that defines a second beam hollow in communication with the receiving space. The axle assembly further includes an electric drive unit housed within the banjo axle housing and having a motor disposed within the receiving space that drives rotation of a rotor shaft, a first half shaft that extends within the first beam hollow, and a second half shaft that extends within the second beam hollow. The rotor shaft, the first half shaft, and the second half shaft are coaxially aligned.

A rotor assembly for an electric machine, having a rotor shaft rotateable about an axis of rotation, a rotor body. The rotor shaft is arranged coaxially in a receiving opening of the rotor body and is connected to the rotor body for conjoint rotation, a plurality of spacing regions distributed around the circumference about the axis of rotation between an outer circumference of the rotor shaft and an inner circumference of the receiving opening, and contact regions, the rotor shaft and the rotor body spaced apart from one another in the spacing regions and in contact with one another in the contact regions, wherein each of the spacing regions is divided into an inlet channel and an outlet channel which are fluidically interconnected on a first axial rotor end face via a deflection region and fluidically separated from one another on a second axial rotor end face in a connection region.

The invention discloses a centrifugal pump rotor curved surface profile tolerance detection device and method, and relates to the technical field of curved surface profile tolerance detection. The device comprises a base, four conveying belt wheel supports are fixedly installed on the base, two conveying belt wheels arranged in parallel are rotationally installed on the four conveying belt wheel supports, the two conveying belt wheels are in transmission connection through two conveying belts arranged in parallel, and a gap is formed between the two conveying belts; a supporting sliding plate is arranged in the middle of the conveying belt, and the upper surface of the supporting sliding plate is in sliding fit with the conveying belt for supporting the conveying belt; an arch-shaped frame is further fixedly installed on the base, a top clamping electric cylinder and a bottom clamping electric cylinder which are symmetrically arranged are rotationally installed on the arch-shaped frame, and an external expansion extrusion clamping head and an extrusion conical head are fixedly installed at the end of a telescopic rod of the top clamping electric cylinder and the end of a telescopic rod of the bottom clamping electric cylinder correspondingly in a convenient-to-disassemble mode; a three-dimensional laser measuring and scanning assembly used for detecting the curved surface contour of the centrifugal pump rotor is further movably installed on the arch-shaped frame.

The invention relates to a direct current motor with an anti-electromagnetic interference structure in the field of motors, which is characterized in that the surfaces of a commutator and an electric brush are blown in real time through a magnetic shielding cylinder arranged on the outer side of the commutator and an air blowing blade arranged in the magnetic shielding cylinder, and carbon powder on the surfaces of the commutator and the electric brush is cleaned; the commutator and the electric brush are subjected to synchronous blowing heat dissipation, so that the commutator and the electric brush have relatively good contact stability, the condition of contact resistance increase caused by carbon powder accumulation is reduced, the probability of arc generation between the commutator and the electric brush is reduced, and the electromagnetic compatibility of the motor is further improved; the influence of a high-frequency magnetic field generated by the arc on a rotor winding coil is reduced, and electromagnetic interference is further reduced; in addition, the insulating groove formed in the commutator improves the collecting and cleaning effects of the carbon powder, and the insulating groove is matched with the diversion disc to realize ejection of the lower contact surface of the electric brush, so that the cleaning effect of the carbon powder is further improved.

The present application provides a reverse-type integrated miniature linear servo electric cylinder. An open end of a rotor housing in a power transmission mechanism is fixedly connected to a planetary carrier by means of a coupling, the planetary carrier is directly driven by means of integration of the motor rotor housing and the planetary carrier, and after power transmission via the planetary carrier, an output end is directly driven to achieve linear motion without adding a gear reduction mechanism to a power transmission system of the electric cylinder, thereby significantly reducing the internal space of the electric cylinder occupied by the power transmission mechanism, allowing the electric cylinder to develop to have a more miniaturized and compact structure, saving costs; moreover, the energy utilization rate of the electric cylinder is improved, the electric energy consumption of the electric cylinder is reduced, and relatively good economic benefits can be yielded.