WO2024060123A1 - 云台和无人飞行器 - Google Patents

云台和无人飞行器 Download PDF

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Publication number
WO2024060123A1
WO2024060123A1 PCT/CN2022/120492 CN2022120492W WO2024060123A1 WO 2024060123 A1 WO2024060123 A1 WO 2024060123A1 CN 2022120492 W CN2022120492 W CN 2022120492W WO 2024060123 A1 WO2024060123 A1 WO 2024060123A1
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WO
WIPO (PCT)
Prior art keywords
rotor
output shaft
pan
motor
magnetic
Prior art date
Application number
PCT/CN2022/120492
Other languages
English (en)
French (fr)
Inventor
易鹏
宾朋
马冀
冯智超
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2022/120492 priority Critical patent/WO2024060123A1/zh
Publication of WO2024060123A1 publication Critical patent/WO2024060123A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
    • B64C13/02—Initiating means
    • B64C13/16—Initiating means actuated automatically, e.g. responsive to gust detectors
    • B64C13/20—Initiating means actuated automatically, e.g. responsive to gust detectors using radiated signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H49/00—Other gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction

Definitions

  • This application relates to the technical field of unmanned aerial vehicles, and in particular to a gimbal and an unmanned aerial vehicle.
  • a gimbal is usually used to carry the camera equipment.
  • a motor is usually provided on the pan/tilt to drive the camera equipment to rotate and adjust the shooting angle of the camera equipment.
  • one implementation method of the motor is to use a direct-drive brushless motor to achieve power output.
  • a direct-drive brushless motor to achieve power output.
  • Another way to implement the motor is to add a gear reducer to achieve torque transmission.
  • adding a gear reducer not only greatly increases the size of the motor, but also causes the gear reducer to easily wear out over time, resulting in reduced transmission accuracy and increased noise.
  • embodiments of the present application provide a gimbal and an unmanned aerial vehicle.
  • an embodiment of the present application provides a gimbal, the gimbal comprising:
  • a motor used to drive the bracket to rotate, the motor comprising a stator and a rotor;
  • the ESC is electrically connected to the motor and used to control the operation of the motor, wherein the motor is electrically connected to the ESC. Under the control of the ESC, the motor is energized and outputs power. ;as well as
  • the magnetic gear assembly includes a torque input end and a torque output end, the torque input end is mechanically coupled to the rotor, and the torque output end is mechanically coupled to the bracket;
  • the motor drives the torque input end to rotate, and after the magnetic gear assembly changes the rotation speed, the torque output end drives the bracket to rotate to change the posture of the camera equipment.
  • stator and the rotor are arranged radially, the stator is located inside the rotor, and the rotor is spaced opposite to the stator and is located away from the center of the motor.
  • the magnetic gear assembly includes: a first rotor, a magnetizing rotor and a second rotor arranged in sequence, the first rotor serves as the torque input end, and the magnetizing rotor or the second rotor can As the torque output end, the power output by the motor changes after being modulated by the first rotor, the magnetizing rotor and the second rotor.
  • the rotor is fixed to the first rotor, and when the stator is energized to drive the rotor to rotate, the rotor can drive the first rotor to rotate together.
  • the motor further includes an output shaft, which is fixedly connected to the torque output end.
  • the motor further includes: a housing, the output shaft is at least partially disposed in the housing; the magnetizing rotor is fixedly connected to the output shaft, and the second rotor and the stator are fixed to the housing. In the housing, the magnetizing rotor and the output shaft can rotate relative to the second rotor and stator.
  • the motor further includes: a housing, the output shaft is at least partially disposed in the housing; the second rotor is fixedly connected to the output shaft, and the magnetizing rotor and the stator are fixed to the housing. In the housing, the second rotor and the output shaft can rotate relative to the magnetizing rotor and the stator.
  • the motor further includes a position detection sensor, the position detection sensor is used to detect the rotational position of the torque input end and the torque output end, the electric adjustment is electrically connected to the position detection sensor, and the electric adjustment Then, based on the rotation position, the control signal for driving the first rotor is adjusted to cause the torque output end to rotate to the target angle.
  • the position detection sensor includes at least one of a Hall sensor and a photoelectric sensor.
  • the position detection sensor includes a first position detection sensor and a second position detection sensor, the first position detection sensor is used to detect the first rotation position of the torque input end, and the second position detection sensor is used To detect the second rotation position of the torque output end.
  • the first rotor includes a first magnetic element capable of generating a first magnetic field with a first harmonic component; the magnetizing rotor includes a magnetic permeable element capable of generating The first magnetic field is modulated into a second magnetic field having a second harmonic component; the second harmonic component is matched with a third harmonic component generated by the second magnetic element on the second rotor to match The power input to the magnetic gear assembly is transmitted and modulated.
  • the magnetic conductive element is a silicon steel sheet or a magnetic conductive steel block.
  • the magnetic gear assembly includes: at least one of an axial magnetic gear assembly and a radial magnetic gear assembly.
  • the magnetic gear assembly is an axial magnetic gear assembly; the first rotor, the magnetic adjustment rotor and the second rotor are sequentially sleeved on the output shaft along the axial direction of the output shaft.
  • an axial gap is formed between the first rotor and the magnetically adjustable rotor, and between the magnetically adjustable rotor and the second rotor.
  • the motor further includes a first thrust bearing sleeved outside the output shaft and located between the first rotor and the second rotor.
  • one of the upper side wall and the lower side wall of the first thrust bearing is fixedly connected to the first rotor, and the other one of the upper side wall and the lower side wall is connected to the first thrust bearing.
  • the second rotor is fixedly connected, and the upper side wall and the lower side wall are relatively rotatable.
  • the first thrust bearing is sleeved outside the output shaft, and the relative positions of the two remain unchanged.
  • the motor further includes an upper cover, which is sleeved outside the output shaft and connected to the top of the housing.
  • the upper cover and the housing can enclose an accommodation space, and the accommodation space is The space can accommodate the magnetic gear assembly, stator and rotor.
  • the outer wall of the magnetizing rotor is fixedly connected to the inner wall of the housing, and the upper cover is pressed on the magnetizing rotor to prevent the magnetizing rotor from moving along the axial direction of the output shaft. sports.
  • the outer wall of the second rotor is fixedly connected to the inner wall of the upper cover, and the upper cover is pressed on the second rotor to prevent the second rotor from moving along the axis of the output shaft. towards movement.
  • the motor further includes a second thrust bearing, which is sleeved outside the output shaft and connected to the upper cover.
  • the second thrust bearing is fixedly connected to the output shaft, and the lower side wall of the second thrust bearing is fixedly connected to the upper cover.
  • the motor further includes a first deep groove ball bearing, which is sleeved outside the output shaft and connected to the first rotor.
  • an inner wall of the first deep groove ball bearing is fixedly connected to the output shaft, and an outer wall of the first deep groove ball bearing is fixedly connected to the first rotor.
  • the magnetic gear assembly is a radial magnetic gear assembly; the first rotor, the magnetizing rotor and the second rotor are sleeved outside the output shaft in sequence along the radial direction of the output shaft. .
  • a radial gap is formed between the first rotor and the magnetizing rotor, and between the magnetizing rotor and the second rotor.
  • the magnetizing rotor is provided with a through hole for the output shaft to pass through, and the output shaft passes through the through hole and can rotate in the through hole;
  • a receiving groove is provided in the magnetizing rotor, the stator is sleeved outside the output shaft and fixed in the receiving groove, at least part of the first rotor extends into the receiving groove, and the stator is sleeved outside the output shaft and fixed in the receiving groove.
  • the rotor is fixed to the portion of the first rotor that extends into the receiving groove and is relatively spaced apart from the stator.
  • the motor further includes a second deep groove ball bearing, and the second deep groove ball bearing is disposed between the first rotor and the second rotor.
  • the inner wall of the second deep groove ball bearing is connected to the second rotor, and the outer wall of the second deep groove ball bearing is connected to the first rotor.
  • the motor further includes a third deep groove ball bearing, and the third deep groove ball bearing is disposed between the output shaft and the magnetizing rotor.
  • the inner wall of the third deep groove ball bearing is fixedly connected to the output shaft, and the outer wall of the third deep groove ball bearing is fixedly connected to the magnetizing rotor.
  • the motor further includes at least one fourth deep groove ball bearing, and the fourth deep groove ball bearing is disposed between the first rotor and the magnetizing rotor.
  • the inner wall of the fourth deep groove ball bearing is connected to the first rotor, and the outer wall of the fourth deep groove ball bearing is connected to the magnetizing rotor.
  • stator is a coil and the rotor is a magnetic component.
  • the bracket includes at least one of a roll axis bracket, a pitch axis bracket, and a yaw axis bracket
  • the motor includes at least one of the following:
  • a roll drive motor used to drive the roll axis bracket to rotate around the roll axis
  • a pitch drive motor used to drive the pitch axis bracket to rotate around the pitch axis
  • a yaw drive motor is used to drive the yaw axis bracket to rotate around the yaw axis.
  • embodiments of the present application also disclose an unmanned aerial vehicle, which is characterized in that the unmanned aerial vehicle includes: an unmanned aerial vehicle body, a camera device, and a gimbal as described in any one of the above;
  • the cloud platform is connected to the UAV body, and the camera equipment is mounted on the cloud platform.
  • the magnetic gear assembly can be used to reduce the rotational speed of the motor output, increase the torque output of the motor, and convert the power output of the motor into a large torque output. , and transmitted to the torque output end of the magnetic gear assembly. Since the torque output end is mechanically coupled to the bracket, the power output from the torque output end can drive the bracket to rotate. Since the structure of the magnetic gear assembly is simple and the size is small, the magnetic gear assembly can achieve greater torque transmission in a smaller space, and the torque transmission accuracy is higher. Moreover, since the magnetic gear assembly realizes torque transmission through the coupling of magnetic poles, the magnetic gear assembly will not wear out over time and can still achieve higher transmission accuracy and lower transmission noise.
  • Figure 1 schematically shows the structural diagram of a cloud platform according to the embodiment of the present application
  • Figure 2 schematically shows the structural diagram of another type of cloud platform according to the embodiment of the present application.
  • FIG3 schematically shows a schematic structural diagram of a motor according to an embodiment of the present application
  • Figure 4 schematically shows an exploded structural diagram of the motor shown in Figure 3;
  • FIG5 schematically shows a cross-sectional structural diagram of the motor shown in FIG3 ;
  • FIG6 schematically shows a structural diagram of another motor according to an embodiment of the present application.
  • Figure 7 schematically shows an exploded structural view of the motor shown in Figure 6;
  • Figure 8 schematically shows a cross-sectional structural diagram of the motor shown in Figure 6;
  • Figure 9 schematically shows the structural diagram of yet another motor according to the embodiment of the present application.
  • Figure 10 schematically shows the structural diagram of yet another motor according to the embodiment of the present application.
  • Figure 11 schematically shows the structural diagram of an unmanned aerial vehicle according to the embodiment of the present application.
  • first and second features in the description and claims of this application may include one or more of these features, either explicitly or implicitly.
  • plural means two or more.
  • and/or in the description and claims indicates at least one of the connected objects, and the character “/” generally indicates that the related objects are in an “or” relationship.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • Embodiments of the present application provide a pan/tilt that can be used to carry camera equipment.
  • the camera equipment can include but is not limited to any one of cameras, terminal settings, and cameras.
  • the PTZ can be used to install and support the camera equipment, and control the rotation or movement of the camera equipment to realize the adjustment of the camera equipment and enrich the functions and shooting experience of the camera equipment.
  • FIG. 1 a schematic structural diagram of a pan-tilt according to an embodiment of the present application is shown.
  • FIG. 2 a schematic structural diagram of another pan-tilt according to an embodiment of the present application is shown.
  • FIG. 3 a schematic structural diagram of a motor and a magnetic gear assembly according to an embodiment of the present application is shown.
  • FIG. 4 an exploded structural diagram of the motor and the magnetic gear assembly shown in FIG. 3 is shown.
  • FIG. 5 showing a schematic cross-sectional structural diagram of the motor and magnetic gear assembly shown in Figure 3 .
  • FIG. 6 a schematic structural diagram of another motor and magnetic gear assembly according to the embodiment of the present application is shown.
  • FIG. 7 an exploded structural diagram of the motor and magnetic gear assembly shown in FIG. 6 is shown.
  • FIG. 8 shows a schematic cross-sectional structural diagram of the motor shown in Figure 6 .
  • the pan/tilt described in Figure 1 may be a pan/tilt mounted on an unmanned aerial vehicle, and the pan/tilt may be used to carry the camera equipment 20.
  • the pan/tilt can be used to control the rotation of the camera device 20 along the pitch axis, yaw axis or roll axis, so as to perform multi-angle shooting and realize the aerial photography function.
  • the gimbal shown in Figure 2 is a handheld gimbal.
  • the handheld gimbal can have a built-in balance adjustment system. By setting and adjusting the balance of the camera, it can provide stable and smooth image quality to meet the needs of daily shooting and film and television production.
  • the gimbal described in the embodiment of the present application can be the gimbal mounted on the unmanned aerial vehicle as shown in Figure 1, or it can be the handheld gimbal shown in Figure 2.
  • the embodiment of the present application is suitable for all The specific type of gimbal is not limited.
  • the pan/tilt head may include: a bracket 10, which may be used to carry the camera equipment 20; a motor 11, which is used to drive the bracket 10 to rotate, and the motor 11 includes a stator 111 and a rotor 112; and an electric regulator (not shown in the figure). (shown), the ESC is electrically connected to the motor 11. Under the control of the ESC, the motor 11 is energized and outputs power. Magnetic gear assembly 12.
  • the magnetic gear assembly may specifically include a torque input end and a torque output end.
  • the torque input end is mechanically coupled to the rotor 112, and the torque output end is mechanically coupled to the bracket 10; wherein, the motor 11 drives the torque input After the magnetic gear assembly 12 changes the rotation speed, the torque output end drives the bracket 10 to rotate to change the posture of the camera device.
  • the bracket 10 may specifically include at least one of a roll axis bracket, a pitch axis bracket, and a yaw axis bracket.
  • the embodiments of the present application may not limit the specific content of the bracket 10 .
  • the motor 11 includes at least one of the following: a roll drive motor, used to drive the roll axis bracket to rotate around the roll axis; a pitch drive motor, used to drive the pitch axis bracket to rotate around the pitch axis; a yaw drive motor , used to drive the yaw axis bracket to rotate around the yaw axis.
  • the motor 11 can be used to output power. Since the torque input end of the magnetic gear assembly 12 is coupled with the rotor 112 of the motor 11 , the magnetic gear assembly 12 can be used to reduce the rotation speed output by the motor 11 and increase the output of the motor 11 The torque converts the power output by the motor 11 into a large torque output, and transmits it to the torque output end of the magnetic gear assembly 12 . Since the torque output end is mechanically coupled with the bracket 10, the power output by the torque output end can drive the bracket 10 to rotate. Since the magnetic gear assembly 12 has a simple structure and a small size, the magnetic gear assembly 12 can achieve greater torque transmission in a smaller space, and the torque transmission accuracy is higher. Moreover, since the magnetic gear assembly 12 realizes torque transmission through the coupling of magnetic poles, the magnetic gear assembly 12 will not wear out as the use time is extended, and high transmission accuracy and low transmission speed can still be achieved. noise.
  • the magnetic gear assembly 12 may be an axial magnetic gear assembly as shown in Figures 3 to 5. Specifically, the components of the axial magnetic gear assembly may be sequentially distributed along the axial direction, so that the height of the axial magnetic gear assembly along the axial direction is relatively large, and the width along the radial direction is correspondingly relatively small.
  • the magnetic gear assembly 12 may also be the radial magnetic gear assembly shown in FIGS. 6 to 8 .
  • each component in the radial magnetic gear assembly can be distributed sequentially in the radial direction. Therefore, the width of the radial magnetic gear assembly in the radial direction is larger and the height in the axial direction is correspondingly smaller.
  • those skilled in the art can set the magnetic gear assembly 12 to at least one of the axial magnetic gear assembly or the radial magnetic gear assembly according to actual needs, so that the magnetic gear assembly 12 can be used in the motor.
  • the layout in 11 reduces the space occupied by the motor 11 in the cloud platform as much as possible.
  • the radial magnetic gear assembly may be selected.
  • the axial magnetic gear assembly can be selected to reduce the outer diameter of the magnetic gear assembly 12 as much as possible, thereby, The overall size of the motor 11 can be reduced.
  • the stator 111 and the rotor 112 are arranged radially, the stator 111 is located inside the rotor 112, and the rotor 112 is spaced opposite to the stator 111 and is located away from the center of the motor 11, that is,
  • the motor 11 may be an external rotor motor. Since the structure of the external rotor motor can be made more compact than that of the internal rotor motor, when the motor is an external rotor motor, the space occupied by the motor in the gimbal can be smaller, which is beneficial to the use of the motor in the gimbal. layout.
  • the magnetic gear assembly 12 may include: a first rotor 121, a magnetization rotor 122 and a second rotor 123 arranged in sequence.
  • the first rotor 121 can serve as the torque input end, the magnetization rotor 122 or the second rotor 123. It can be used as the torque output end, and the power output by the motor 12 changes after being modulated by the first rotor 121, the magnetizing rotor 122 and the second rotor 123, thereby realizing the transmission of torque.
  • the first rotor 121 can be connected to the output end of the motor 11 to transmit the power output by the motor 11 to the first rotor 121 through the first rotor 121 , the magnetizing rotor 122 and the second rotor 123 .
  • the power output by the motor 11 can change in torque and be output from the magnetizing rotor 122 or the second rotor 123 .
  • either the magnetizing rotor 122 or the second rotor 123 can be used as the torque output end, so that the power output by the motor 11 can be modulated to different degrees to achieve different torque changes.
  • the magnetizing rotor 122 or the second rotor 123 can be directly or indirectly connected to the bracket 10 .
  • the implementation of this application does not specifically limit the connection method between the magnetizing rotor 122 or the second rotor 123 and the bracket 10 .
  • the rotor 112 can be fixed to the first rotor 121.
  • the stator 111 When the stator 111 is energized to drive the rotor 112 to rotate, the rotor 112 can drive the first rotor 121 to rotate together.
  • by fixedly connecting the rotor 112 to the first rotor 121 it is possible to avoid providing a transmission mechanism between the motor 11 and the magnetic gear assembly 12, simplifying the structure of the motor 12, and thereby reducing the size of the motor 11 and the magnetic gear assembly. Overall dimensions of assembly 12.
  • the rotor 112 and the first rotor 121 may be interference-fitted to fix the rotor 112 to the first rotor 121 .
  • a first groove for accommodating the rotor 112 may be provided on the second rotor 123.
  • the size of the first groove may be slightly larger than the size of the rotor 112. In this way, the rotor 112 is embedded in the rotor 112.
  • the interference fit between the rotor 112 and the first rotor 121 can be achieved in a simple way without introducing additional connecting parts.
  • the rotor 112 can be bonded, clipped, or connected to the first rotor 121 through fasteners to fix the rotor 112 to the first rotor 121.
  • the two can be bonded through adhesive media such as tape and glue, and the fixed connection between the two can be achieved through fasteners such as bolts and screws, which are not limited in the embodiments of the present application.
  • the motor 11 may also include an output shaft 114, which may be fixedly connected to the torque output end. That is, the output shaft 114 of the motor 11 may be used as a power output shaft and be directly or indirectly connected to the bracket 10, so as to The structure of the motor 11 and the magnetic gear assembly 12 is made more compact, which is beneficial to the layout of the motor 11 and the magnetic gear assembly 12 in the cloud platform.
  • the motor 11 may also include a housing 113, the output shaft 114 is at least partially disposed in the housing 113, the magnetizing rotor 122 is fixedly connected to the output shaft 114, and the second rotor 123 and the stator 111 are fixed to In the housing 113, the magnetizing rotor 122 and the output shaft 114 can rotate relative to the second rotor 123 and the stator 111 to achieve power output.
  • the modulated magnetic pole 122 as the torque output end and directly or indirectly connected to the bracket 10, since the internal force received by the modulated magnetic pole 122 is relatively uniform, the torque output by the modulated magnetic pole 122 is also more stable. In this way, a stable The drive bracket 10 is rotated to change the attitude of the camera device 20 .
  • the motor 11 may also include: a housing 113, the output shaft 114 is at least partially disposed in the housing 113; the second rotor 123 is fixedly connected to the output shaft 114, and the magnetizing rotor 122 is connected to the stator 111 Fixed in the housing 113, the second rotor 123 and the output shaft 114 can rotate relative to the magnetizing rotor 122 and the stator 111 to achieve power output.
  • the second rotor 123 can be used as the torque output end and is directly or indirectly connected to the bracket 10 . Since the power output by the motor 11 can be modulated by the first rotor 121, the magnetizing rotor 122 and the second rotor 123 in sequence, a larger modulation range can be achieved. In this way, when the second rotor 123 drives the bracket 10 to rotate, the bracket 10 can achieve a larger rotation range.
  • the motor 11 may also include a position detection sensor 1112.
  • the position detection sensor 1112 may be used to detect the rotational position of the torque input end and the torque output end.
  • the electric regulator may be electrically connected to the position detection sensor 1112. The electric regulator may be used to adjust the control signal for driving the first rotor 121 based on the rotation position, so that the torque output end rotates to the target angle.
  • the position detection sensor 1112 can be used to detect the rotational position of the torque input end and the torque output end, and achieve precise angle control with reference to the rotation angle of the torque input end and the torque output end, so that The torque output end can accurately rotate to the target angle, which improves the driving accuracy of the motor 11 for the bracket 10 and facilitates the camera equipment 20 on the bracket 10 to accurately rotate to the required position, so that the cloud can be realized.
  • the station accurately controls the camera equipment 20.
  • the ESC can be electrically connected to the stator 111, and the ESC can be used to output a control signal to the stator 111 that can drive the first rotor 121 to rotate, so that the rotation of the first rotor 121 can drive the second rotor 123 to rotate. to the target angle to achieve torque transmission.
  • the ESC can output a control signal to the stator 111 to control the stator 111 to be energized.
  • an electromagnetic field can be formed to drive the rotor 112 to rotate. Since the rotor 112 is fixed to the first rotor 121, when the rotor 112 rotates, it can drive the first rotor 121 to rotate and output power to the first rotor 121.
  • the second rotor 123 can be driven to rotate at the target angle to achieve torque transmission.
  • the target angle is the angle corresponding to the second rotor 123 when the camera device 20 on the bracket 10 is adjusted to a required position.
  • the position detection sensor 1112 may include at least one of a Hall sensor and a photoelectric sensor.
  • the embodiment of the present application may not limit the specific content of the position detection sensor 1112.
  • the photoelectric sensor may include but is not limited to an infrared sensor, a photosensitive sensor, etc. The embodiments of this application may not limit the specific content of the photoelectric sensor.
  • the position detection sensor 1112 may include a first position detection sensor 11121 and a second position detection sensor 11122.
  • the first position detection sensor 11121 may be disposed close to the torque input end to detect the first rotation of the torque input end.
  • the second position detection sensor 11122 may be disposed close to the torque output end to detect the second rotation position of the torque output end.
  • the torque input end may be the first rotor 121
  • the torque output end may be the second rotor 123 .
  • a closed-loop detection can be formed, so that the second rotor 123 can accurately rotate to the target angle.
  • the specific implementation of the closed-loop detection may include: when the electric regulator controls the stator 111, it may give the stator 111 a control signal for the first rotor 121 to rotate forward a degree and the second rotor 123 to rotate forward b degrees. . Then, the first rotation position of the first rotor 121 is detected by the first position detection sensor 11121 to determine whether the first rotor 121 is rotating forward a degree. When the first rotor 121 does not rotate as required, the control signal for driving the first rotor 121 is adjusted in real time until the first rotor 121 rotates forward a degree.
  • the second rotation position of the second rotor 123 can be detected by the second position detection sensor 11122 to determine whether the second rotor 123 rotates forward b degrees.
  • the control signal for driving the first rotor 121 is adjusted in real time until the second rotor 123 rotates forward b degrees and reaches the target angle.
  • the stator 111 can be a coil
  • the rotor 112 can be a magnetic component.
  • the coil can be electrically connected to the electric regulator. Under the control of the electronic regulator, the coil can be energized and drive the magnetic component to move. , to output power.
  • the electric regulator can be used to control the on/off power of the coil.
  • the coil can form an electromagnetic field.
  • the magnetic component can rotate to achieve power output.
  • the coil and the magnetic component are arranged relatively spaced apart, and the magnetic component can be set outside the output shaft 114.
  • the magnetic component can be driven to rotate around the output shaft 114 to achieve Power output.
  • the coil and the magnetic component may be arranged at a relative distance and a gap is formed between the coil and the magnetic component.
  • the magnetic member may be disposed inside the coil or outside the coil.
  • the embodiment of the present application may not limit the relative position of the magnetic member and the coil.
  • the magnetic member can be sleeved outside the output shaft 114 and form a gap with the output shaft 114. Therefore, when the magnetic member rotates under the driving of the coil, the magnetic member can rotate around the output shaft. 114 turns.
  • the first rotor 121 includes a first magnetic element 1211.
  • the first magnetic element 1211 is coupled with the rotor 112. Under the triggering of the rotor 112, the first magnetic element 1211 on the first rotor 121 can generate a first harmonic wave. components of the first magnetic field.
  • the magnetizing rotor 122 includes a magnetically permeable element 1221, which can modulate the first magnetic field into a second magnetic field having a second harmonic component.
  • the second harmonic component matches the third harmonic component generated by the second magnetic element 1231 on the second rotor 123 to transmit and modulate the power input to the magnetic gear assembly 12 .
  • the magnetic conductive element 1221 may be at least one of a silicon steel sheet or a magnetic conductive steel block to achieve the magnetic conductive function.
  • the embodiment of the present application may not limit the specific material of the magnetic conductive element 1221.
  • the number of pairs of the first magnetic elements 1211, the number of pairs of the magnetically permeable elements 1221, and the number of pairs of the second magnetic elements 1231 are all different.
  • a small air gap can be formed between the first magnetic element 1211 and the magnetic permeable element 1221, and between the magnetic permeable element 1221 and the second magnetic element 1231 to separate the first magnetic element 1211 and the magnetic permeable element 1221, and , separating the magnetically conductive element 1221 and the second magnetic element 1231.
  • the rotor 112 can trigger the first magnetic element 1211 to form a first magnetic field with a first harmonic component.
  • the magnetic permeable element 1221 is coupled to the first magnetic element 1211, the magnetic permeable element 1221 can modulate the first magnetic field into a second magnetic field having a second harmonic component.
  • the second magnetic element 1231 on the other side of the magnetic conductive element 1221 can generate a third magnetic field with a third harmonic component, because the second magnetic wave component of the second magnetic field can interact with the third harmonic component of the third magnetic field. Matching, the second magnetic field and the third magnetic field can interact to achieve torque transmission.
  • the logarithm Po of the first magnetic element 1211, the logarithm Pi of the magnetic permeable element 1221, and the logarithm Ps of the second magnetic element 1231 need to follow the following relationships:
  • the number of pairs Po of the first magnetic element 1211 is 4 pairs
  • the number of pairs Pi of the magnetically permeable element 1221 is 15 pairs
  • the number of pairs Ps of the second magnetic element 1231 is 11 pairs
  • the number of pairs of each magnetic pole is Formula 1 can be satisfied.
  • the four pairs of first magnetic elements 1211 on the first rotor 121 can generate a first magnetic field in which the fourth harmonic cost is dominant.
  • the first magnetic field is modulated by the 15 pairs of magnetic conductive elements 1221 on the magnetizing rotor 122 to generate a second magnetic field in which the 11th harmonic is dominant. Since the 11 pairs of magnetic poles on the second rotor 123 can generate a third magnetic field in which the 11th harmonic is dominant, the 11th harmonic of the second magnetic field can interact with the 11th harmonic of the third magnetic field, Achieve torque transmission.
  • the logarithm of the first magnetic element 1211, the logarithm of the magnetic permeable element 1221, and the logarithm of the second magnetic element 1231 can be set according to the actual situation if they satisfy Formula 1.
  • This application The embodiment does not specifically limit this.
  • the stator 111 and the housing 113 may have an interference fit to fix the stator 111 to the housing 113 .
  • a second groove for accommodating the stator 111 may be provided on the housing 113 , and the size of the second groove may be slightly larger than the size of the stator 111 . In this way, when the stator 111 is embedded in the second groove, an interference fit between the stator 111 and the housing 113 can be achieved.
  • the implementation method is simple and does not require the introduction of additional connectors.
  • the stator 111 can be bonded, clipped, or connected to the housing 113 through fasteners to fix the stator 111 to the housing 113 .
  • the two can be bonded through adhesive media such as tape and glue, and the fixed connection between the two can be achieved through fasteners such as bolts and screws, which are not limited in the embodiments of the present application.
  • the first rotor 121 , the magnetizing rotor 122 and the second rotor 123 can all be sleeved outside the output shaft 114 .
  • the first rotor 121 is rotationally connected to the output shaft 114
  • the magnetizing rotor 122 Fixedly connected to the housing 113
  • the second rotor 123 is connected to the output shaft 114; under the triggering of the rotor 112, the first rotor 121 can rotate around the output shaft 114, and the rotation of the first rotor 121 can trigger the second rotor 123 and the output shaft 114. Rotating together, in this way, relative rotation between the first rotor 121 and the second rotor 123 can be achieved to achieve torque transmission.
  • the rotor 112 can be driven to drive the first rotor 121 to rotate around the output shaft 114 together. Since the magnetizing rotor 122 is fixed to the housing 113, the magnetizing rotor 122 will not rotate. The rotation of the first rotor 121 can trigger the second rotor 123 to rotate together with the output shaft 114. Through the relative rotation between the first rotor 121 and the output shaft 114, torque can be transmitted, and through the rotation of the output shaft 114, the torque can be transmitted. The torque is finally output.
  • the second rotor 123 and the output shaft 114 may be an integrally formed structure to achieve a fixed connection between the first rotor 121 and the output shaft 114.
  • the connection strength between the second rotor 123 and the output shaft 114 is high, and the process of separately processing the two components can be avoided, simplifying the processing process.
  • the second rotor 123 and the output shaft 114 can be processed into an integrally formed structure by machining, casting, and other processing methods. The embodiment of the present application does not specifically limit the processing method of the integrally formed structure.
  • the second rotor 123 and the output shaft 114 are separate structures, and the second rotor 123 is fixedly connected to the output shaft 114 to achieve synchronous rotation of the second rotor 123 and the output shaft 114.
  • the structures of the second rotor 123 and the output shaft 114 can be relatively simple, and the processing difficulty is relatively low.
  • the second rotor 123 and the output shaft 114 may be interference fit to fix the second rotor 123 to the output shaft 114.
  • a third groove for accommodating the second rotor 123 may be provided on the output shaft 114, and the size of the third groove may be slightly larger than the size of the second rotor 123. In this way, when the second rotor 123 is embedded in the third groove, an interference fit between the second rotor 123 and the output shaft 114 may be achieved, and the implementation method is simple and does not require the introduction of additional connectors.
  • the second rotor 123 is bonded, clipped or connected to the output shaft 114 through fasteners to fix the second rotor 123 to the output shaft 114 .
  • the two can be bonded through adhesive media such as tape and glue, and the fixed connection between the two can be achieved through fasteners such as bolts and screws, which are not limited in the embodiments of the present application.
  • the magnetic gear assembly 12 may be an axial magnetic gear assembly as shown in FIGS. 3 to 5 , and the first rotor 121 , the magnetizing rotor 122 and the second rotor 123 may be along the output shaft 114 are sleeved on the output shaft 114 in sequence.
  • the axial magnetic gear assembly has a greater height along the axial direction of the output shaft 114 and a correspondingly smaller width along the radial direction.
  • an axial gap can be formed between the first rotor 121 and the magnetizing rotor 122, and between the magnetizing rotor 122 and the second rotor 123. .
  • the first magnetic element 1211 and the magnetic permeable element 1221 can be separated along the axial direction of the output shaft 114, and the magnetic permeable element 1221 and the second magnetic element 1231 can be separated to realize the second rotor 123 and the magnetizing rotor 122. and the axial coupling between the magnetizing rotor 122 and the second rotor 123 .
  • the stator 111 is sleeved outside the output shaft 114 and fixed to the housing 113 .
  • the rotor 112 is fixed to the first rotor 121 and is spaced apart from the stator 111 to achieve coupling between the rotor 112 and the stator 111 . In this way, when the stator 111 is powered on, the rotor 112 can be driven to drive the first rotor 121 to rotate together.
  • the motor 11 may also include a first thrust bearing 115.
  • the first thrust bearing 115 is sleeved outside the output shaft 114 and is located between the first rotor 121 and the second rotor 123.
  • the first thrust bearing 115 can be used to bear an axial load and prevent the first rotor 121 and the second rotor 123 from axial movement. In this way, the reliability of the rotation of the first rotor 121 and the second rotor 123 around the output shaft 114 can be further improved.
  • one of the upper side wall and the lower side wall of the first thrust bearing 115 is fixedly connected to the first rotor 121 , and the other one of the upper side wall and the lower side wall is connected to the second rotor 121 .
  • 123 is fixedly connected, and the upper side wall and the lower side wall can rotate relative to each other.
  • the first thrust bearing 115 bears the axial load, since the upper side wall and the lower side wall can rotate relative to each other, it can also facilitate the relative rotation between the first rotor 121 and the second rotor 123. Turn.
  • FIG. 5 only shows the situation where the first rotor 121, the magnetic adjustment rotor 122, and the second rotor 123 are sequentially distributed from bottom to top along the output shaft 114.
  • the upper side wall of the first thrust bearing 115 is connected to the second rotor 123
  • the lower side wall of the first thrust bearing 115 is connected to the first rotor 121.
  • the lower side wall of the first thrust bearing 115 is connected to the second rotor 123
  • the upper side wall of the first thrust bearing 115 is connected to the first rotor 121.
  • the first thrust bearing 115 can be sleeved outside the output shaft 114, and the relative position of the two remains unchanged.
  • the first thrust bearing 115 may be fixedly connected to the output shaft 114 to achieve synchronous rotation of the first thrust bearing 115 and the output shaft 114 .
  • the inner wall of the first thrust bearing 115 may be an interference fit with the output shaft 114 to secure the first main thrust bearing to the output shaft 114 .
  • a fourth groove for accommodating the first thrust bearing 115 may be provided on the output shaft 114 , and the size of the fourth groove may be slightly larger than the size of the first thrust bearing 115 . In this way, when the first thrust bearing 115 is embedded in the fourth groove, an interference fit between the first thrust bearing 115 and the output shaft 114 can be achieved.
  • the implementation method is simple and does not require the introduction of additional components. Connectors.
  • the first thrust bearing 115 can be bonded, snapped, or connected to the output shaft 114 through fasteners to fix the first thrust bearing 115 to the output shaft 114.
  • the two can be bonded through adhesive media such as tape and glue, and the fixed connection between the two can be achieved through fasteners such as bolts, screws, keys, etc. This is not the case in the embodiment of the present application. limited.
  • the motor 11 may also include an upper cover 116.
  • the upper cover 116 is sleeved outside the output shaft 114 and connected to the top of the housing 113.
  • the upper cover 116 and the housing 113 can be enclosed to form an accommodation space.
  • the accommodation space Capable of accommodating the magnetic gear assembly 12, the stator 111 and the rotor 112 of the motor 11.
  • the upper cover 116 can be fixed on the top of the housing 113 and fixedly connected with the housing 113 .
  • the upper cover 116 can form a relatively closed accommodation space with the housing 113 to protect the magnetic gear assembly 12 and the brushless motor 111, the stator 111 and the rotor 112 in the accommodation space.
  • the outer wall of the magnetizing rotor 122 is fixedly connected to the inner wall of the housing 113 , and the upper cover 116 is pressed on the magnetizing rotor 122 to prevent the magnetizing rotor 122 from moving in the axial direction of the output shaft 114 .
  • the magnetizing rotor 122 can be fixed on the housing 113, and the magnetizing rotor 122 can be prevented from moving in the axial direction of the output shaft 114, thereby improving the connection reliability between the magnetizing rotor 122 and the housing 113.
  • the motor 11 may also include a second thrust bearing 117 , which is sleeved outside the output shaft 114 and connected to the upper cover 116 .
  • the second thrust bearing 117 can be used to bear the axial load and prevent the upper cover 116 from axial movement. In this way, the reliability of the rotation of the upper cover 116 around the output shaft 114 can be further improved, and the stability of the upper cover 116 pressed against the magnetizing rotor 122 can be further improved.
  • the second thrust bearing 117 is fixedly connected to the output shaft 114 to achieve synchronous rotation of the second thrust bearing 117 and the output shaft 114 .
  • the lower side wall of the second thrust bearing 117 is fixedly connected to the upper cover 116 so that the upper cover 116 can rotate relative to the second thrust bearing 117 , thereby enabling relative rotation between the upper cover 116 and the output shaft 114 .
  • the inner wall of the second thrust bearing 117 is an interference fit with the output shaft 114 to fix the second main thrust bearing to the output shaft 114.
  • a fifth groove for accommodating the second thrust bearing 117 may be provided on the output shaft 114 , and the size of the fifth groove may be slightly larger than the size of the second thrust bearing 117 . In this way, when the second thrust bearing 117 is embedded in the fifth groove, an interference fit between the second thrust bearing 117 and the output shaft 114 can be achieved.
  • the implementation method is simple and does not require the introduction of additional components. Connectors.
  • the interior of the second thrust bearing 117 is bonded, clamped or connected to the output shaft 114 through a fastener to fix the second thrust bearing 117 to the output shaft 114.
  • the bonding of the two can be achieved through an adhesive medium such as tape or glue, and the fixed connection between the two can be achieved through fasteners such as bolts, screws, and keys, which is not limited in the embodiments of the present application.
  • the motor 11 may also include a first deep groove ball bearing 118 , which is sleeved outside the output shaft 114 and connected to the first rotor 121 .
  • the first deep groove ball bearing 118 is used to cooperate with the second thrust bearing 117 to offset the end torque experienced by the output shaft 114 to ensure that the output shaft 114 can rotate smoothly.
  • the second thrust bearing 117 since the second thrust bearing 117 is connected to the top of the output shaft 114, the top of the output shaft 114 will receive end torque.
  • the end torque experienced by the output shaft 114 can be offset, thereby making the output shaft 114 more evenly stressed, ensuring that the output shaft 114 can rotate smoothly.
  • the inner wall of the first deep groove ball bearing 118 is fixedly connected to the output shaft 114 to fix the first deep groove ball bearing 118 to the output shaft 114 .
  • the outer wall of the first deep groove ball bearing 118 is fixedly connected to the first rotor 121 to fix the first deep groove ball bearing 118 to the second rotor 123 . Since the first deep groove ball bearing 118 and the outer wall and the inner wall can rotate relative to each other, the first rotor 121 can easily rotate around the output shaft 114 .
  • the inner wall of the first deep groove ball bearing 118 has an interference fit with the output shaft 114 to fix the first deep groove ball bearing 118 to the output shaft 114 .
  • a sixth groove for accommodating the first deep groove ball bearing 118 may be provided on the output shaft 114, and the size of the sixth groove may be slightly larger than the size of the first deep groove ball bearing 118. In this way, when the first deep groove ball bearing 118 is embedded in the sixth groove, an interference fit between the first deep groove ball bearing 118 and the output shaft 114 can be achieved.
  • the implementation method is simple and does not require introduction. Additional connections.
  • the inner wall of the first deep groove ball bearing 118 is bonded, clipped, or connected to the output shaft 114 through fasteners to fix the first deep groove ball bearing 118 to the output shaft 114 .
  • the two can be bonded through adhesive media such as tape and glue, and the fixed connection between the two can be achieved through fasteners such as bolts, screws, keys, etc. This is not the case in the embodiment of the present application. limited.
  • the magnetic gear assembly 12 may also be a radial magnetic gear assembly as shown in FIGS. 6 to 8 ; the first rotor 121 , the magnetizing rotor 122 and the second rotor 123 are along the output shaft 114 are sleeved outside the output shaft 114 in turn.
  • the axial magnetic gear assembly has a smaller height along the axial direction and a correspondingly larger width along the radial direction.
  • a radial gap is formed between the first rotor 121 and the magnetizing rotor 122, and between the magnetizing rotor 122 and the second rotor 123.
  • the first magnetic element 1211 and the magnetic permeable element 1221 can be separated along the radial direction of the output shaft 114, and the magnetic permeable element 1221 and the second magnetic element 1231 can be separated to realize the second rotor 123 and the magnetizing rotor 122. and the radial coupling between the magnetizing rotor 122 and the second rotor 123 .
  • the magnetizing rotor 122 is provided with a through hole for the output shaft 114 to pass through.
  • the output shaft 114 is inserted through the through hole and can rotate in the through hole; the magnetizing rotor 122 is provided with a through hole.
  • the stator 111 is sleeved outside the output shaft 114 and fixed in the receiving groove 1232 to achieve a fixed connection between the stator 111 and the magnetizing rotor 122 . At least part of the first rotor 121 extends into the receiving groove 1232 .
  • the rotor 112 is fixed to the portion of the first rotor 121 that extends into the receiving groove 1232 and is spaced apart from the stator 111 to achieve coupling between the rotor 112 and the stator 111 . In this way, when the stator 111 is powered on, the rotor 112 can be driven to drive the first rotor 121 to rotate together.
  • the stator 111 has an interference fit with the magnetizing rotor 122 to fix the stator 111 to the magnetizing rotor 122.
  • a seventh groove for accommodating the stator 111 may be provided on the magnetizing rotor 122 , and the size of the seventh groove may be slightly larger than the size of the stator 111 . In this way, when the stator 111 is embedded in the seventh groove, an interference fit between the stator 111 and the magnetizing rotor 122 can be achieved.
  • the implementation method is simple and does not require the introduction of additional connecting parts.
  • the stator 111 is bonded, clipped or connected to the magnetizing rotor 122 through fasteners to fix the stator 111 to the magnetizing rotor 122 .
  • the two can be bonded through adhesive media such as tape and glue, and the fixed connection between the two can be achieved through fasteners such as bolts, screws, keys, etc. This is not the case in the embodiment of the present application. limited.
  • the motor 11 may also include a second deep groove ball bearing 119 disposed between the first rotor 121 and the second rotor 123 to achieve smooth rotation of the second rotor 123 .
  • the second deep groove ball bearing 119 can be disposed at the bottom of the output shaft 114 to offset the end torque of the output shaft 114, thereby achieving smooth rotation of the second rotor 123 sleeved at the bottom of the output shaft 114.
  • the inner wall of the second deep groove ball bearing 119 is connected to the second rotor 123 to fix the second deep groove ball bearing 119 to the second rotor 123 .
  • the outer wall of the second deep groove ball bearing 119 is connected to the first rotor 121 to fix the second deep groove ball bearing 119 to the first rotor 121 . Since the second deep groove ball bearing 119 and the outer wall and the inner wall can rotate relative to each other, the second rotor 123 can easily rotate around the first rotor 121 .
  • the motor 11 further includes a third deep groove ball bearing 1110 , which is disposed between the output shaft 114 and the magnetizing rotor 122 to achieve smooth rotation of the magnetizing rotor 122 around the output shaft 114 .
  • the third deep groove ball bearing 1110 can be disposed on the top of the output shaft 114 to offset the end torque of the output shaft 114, thereby achieving smooth rotation of the magnetizing rotor 122 sleeved on the top of the output shaft 114.
  • the inner wall of the third deep groove ball bearing 1110 is fixedly connected to the output shaft 114 to fix the third deep groove ball bearing 1110 to the output shaft 114.
  • the outer wall of the third deep groove ball bearing 1110 is fixedly connected to the magnetizing rotor 122 to fix the third deep groove ball bearing 1110 to the magnetizing rotor 122 . Since the third deep groove ball bearing 1110 and the outer wall and the inner wall can rotate relative to each other, the output shaft 114 can be easily rotated in the through hole of the magnetizing rotor 122 .
  • the motor 11 may also include at least one fourth deep groove ball bearing 1111.
  • the fourth deep groove ball bearing 1111 is disposed between the first rotor 121 and the magnetizing rotor 122 to realize that the first rotor 121 winds around the magnetizing rotor. 122's smooth rotation.
  • the fourth deep groove ball bearing 1111 can be disposed between the first rotor 121 and the magnetizing rotor 122 to bear the radial load between the first rotor 121 and the magnetizing rotor 122, thereby achieving sleeve installation.
  • the first rotor 121 outside the magnetizing rotor 122 rotates smoothly.
  • the height of the single fourth deep groove ball bearing 1111 can be made lower and the structure is simpler.
  • the inner wall of the fourth deep groove ball bearing 1111 is connected to the first rotor 121 to fix the fourth deep groove ball bearing 1111 to the first rotor 121 .
  • the outer wall of the fourth deep groove ball bearing 1111 is connected to the magnetizing rotor 122 to fix the fourth deep groove ball bearing 1111 to the magnetizing rotor 122 . Since the fourth deep groove ball bearing 1111 and the outer wall and the inner wall can rotate relative to each other, the first rotor 121 can be facilitated to rotate smoothly around the magnetizing rotor 122 .
  • the gimbal described in the present application may at least have the following advantages:
  • the magnetic gear assembly can be used to reduce the rotational speed of the motor output, increase the torque output of the motor, and convert the power output of the motor into a large torque output. , and transmitted to the torque output end of the magnetic gear assembly. Since the torque output end is mechanically coupled to the bracket, the power output from the torque output end can drive the bracket to rotate. Since the structure of the magnetic gear assembly is simple and the size is small, the magnetic gear assembly can achieve greater torque transmission in a smaller space, and the torque transmission accuracy is higher. Moreover, since the magnetic gear assembly realizes torque transmission through the coupling of magnetic poles, the magnetic gear assembly will not wear out over time and can still achieve higher transmission accuracy and lower transmission noise.
  • the unmanned aerial vehicle may specifically include: an unmanned aerial vehicle body 100, a camera device 20 and the above-mentioned components.
  • the UAV body 100 may be the main component of the UAV, such as a fuselage, a center body, etc., and the structure of the gimbal 300 may be the same as that of the gimbal 300 described in any of the previous embodiments. No further details will be given.
  • the device embodiments described above are only illustrative.
  • the units described as separate components may or may not be physically separated.
  • the components shown as units may or may not be physical units, that is, they may be located in One location, or it can be distributed across multiple network units. Some or all of the components may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Persons of ordinary skill in the art can understand and implement the method without any creative effort.
  • references to "one embodiment,” “embodiment,” or “one or more embodiments” herein mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present application.
  • examples of the term “in one embodiment” herein do not necessarily all refer to the same embodiment.
  • any reference signs placed between parentheses shall not be construed as limiting the claim.
  • the word “comprising” does not exclude the presence of elements or steps not listed in a claim.
  • the word “a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • the application may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the element claim enumerating several means, several of these means may be embodied by the same item of hardware.
  • the use of the words first, second, third, etc. does not indicate any order. These words can be interpreted as names.

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  • General Engineering & Computer Science (AREA)
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  • Aviation & Aerospace Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

一种云台和无人飞行器，云台具体包括:支架(10)，用于承载摄像设备(20)；电机(11)，用于驱动支架(10)转动，电机 (11)包括定子(111)和转子(112)；电调，电调与电机(11)电连接，用于控制电机(11)运转，在电调控制下电机(11)通电并输出动力；以及磁齿轮组件(12)，磁齿轮组件(12)包括力矩输入端与力矩输出端，力矩输入端与转子(112)机械耦合，力矩输出端与支架(10)机械耦合；其中，电机(11)带动力矩输入端转动，经过磁齿轮组件(12)改变转动速度之后，力矩输出端驱动支架(10)转动，以改变摄像设备(20)的姿态。电机(11)可以在较小的空间内实现较大的扭矩传递，且扭矩传递的精度较高。而且，随着使用时间的延长，仍能够实现较高的传动精度和较低的传动噪音。

Description

云台和无人飞行器 技术领域
本申请涉及无人飞行器技术领域，特别涉及一种云台和无人飞行器。
背景技术
随着用户对于使用体验的极致追求，用户对于摄像设备的影像画质、拍摄体体验要求也越来越高。为了获得较好的拍摄效果，通常会在使用云台来搭载摄像设备。在云台上通常设置有电机，用于驱动摄像设备转动，调节摄像设备的拍摄角度。
在先的技术中，电机的一种实现方式为采用直驱无刷电机来实现动力的输出。然而，由于云台上用来布置电机的空间较小，直驱无刷电机在体积较小的空间内很难输出足够的扭矩。电机的另一种实现方式为增设齿轮减速器来实现扭矩的传递。然而，增设齿轮减速器不仅大幅增加了所述电机的尺寸，而且，随着使用时间的延长，齿轮减速器很容易出现磨损，导致传动精度降低，噪音增大的缺陷。
申请内容
为了解决现有的技术中现有的电机无法在较小的体积实现较大的扭矩传递的问题，本申请实施例提供了一种云台和无人飞行器。
第一方面，本申请实施例提供了一种云台，所述云台包括：
支架，用于承载摄像设备；
电机，用于驱动所述支架转动，所述电机包括定子和转子；
电调，所述电调与所述电机电连接，用于控制所述电机运转，其中，所述电机与所述电调电连接，在所述电调控制下，所述电机通电并输出动力；以及
磁齿轮组件，所述磁齿轮组件包括力矩输入端与力矩输出端，所 述力矩输入端与所述转子机械耦合，所述力矩输出端与所述支架机械耦合；
其中，所述电机带动所述力矩输入端转动，经过所述磁齿轮组件改变转动速度之后，所述力矩输出端驱动所述支架转动，以改变所述摄像设备的姿态。
可选地，所述定子与所述转子呈径向排布，所述定子位于所述转子的内部，并且所述转子与所述定子间隔相对，并远离所述电机的中心位置设置。
可选地，所述磁齿轮组件包括：依次设置的第一转子、调磁转子和第二转子，所述第一转子作为所述力矩输入端，所述调磁转子或所述第二转子能够作为所述力矩输出端，所述电机输出的动力经由所述第一转子、所述调磁转子和所述第二转子的调制后发生变化。
可选地，所述转子固定于所述第一转子，在所述定子通电驱动所述转子转动的情况下，所述转子能够带动所述第一转子一起转动。
可选地，所述电机还包括输出轴，所述输出轴与所述力矩输出端固定连接。
可选地，所述电机还包括：外壳，所述输出轴至少部分设置于所述外壳内；所述调磁转子与所述输出轴固定连接，所述第二转子与所述定子固定于所述外壳内，所述调磁转子与所述输出轴能够相对于所述第二转子与定子转动。
可选地，所述电机还包括：外壳，所述输出轴至少部分设置于所述外壳内；所述第二转子与所述输出轴固定连接，所述调磁转子与所述定子固定于所述外壳内，所述第二转子与所述输出轴能够相对于所述调磁转子与所述定子转动。
可选地，所述电机还包括位置检测传感器，所述位置检测传感器用于检测所述力矩输入端和力矩输出端的转动位置，所述电调与所述位置检测传感器电连接，所述电调用于，基于所述转动位置调节驱动 所述第一转子的控制信号，使所述力矩输出端转动至所述目标角度。
可选地，所述位置检测传感器包括霍尔传感器、光电传感器中的至少一种。
可选地，所述位置检测传感器包括第一位置检测传感器和第二位置检测传感器，所述第一位置检测传感器用于检测所述力矩输入端的第一转动位置，所述第二位置检测传感器用于检测所述力矩输出端的第二转动位置。
可选地，所述第一转子包括第一磁性元件，所述第一磁性元件能够产生具有第一谐波成分的第一磁场；所述调磁转子包括导磁元件，所述导磁元件能够将所述第一磁场调制成具有第二谐波成分的第二磁场；所述第二谐波成分与所述第二转子上的第二磁性元件所产生的第三谐波成分匹配，以将输入所述磁齿轮组件的动力进行传递与调制。
可选地，所述导磁元件为硅钢片或导磁钢块中的一种。
可选地，所述磁齿轮组件包括：轴向磁齿轮组件和径向磁齿轮组件中的至少一种。
可选地，所述磁齿轮组件为轴向磁齿轮组件；所述第一转子、所述调磁转子以及所述第二转子沿所述输出轴的轴向依次套设在所述输出轴上。
可选地，所述第一转子与所述所调磁转子之间，以及所述调磁转子与所述第二转子之间皆形成有轴向的间隙。
可选地，所述电机还包括第一止推轴承，所述第一止推轴承套接在所述输出轴外，且位于所述第一转子和所述第二转子之间。
可选地，所述第一止推轴承的上侧壁和下侧壁的其中之一与所述第一转子固定连接，所述上侧壁和所述下侧壁中的其中另一与所述第二转子固定连接，所述上侧壁与所述下侧壁之间可相对转动。
可选地，所述第一止推轴承套接在所述输出轴外，且两者相对位置保持不变。
可选地，所述电机还包括上盖，所述上盖套接在所述输出轴外且与所述外壳的顶部连接，所述上盖与所述外壳能够合围形成容纳空间，所述容纳空间能够容纳所述磁齿轮组件、定子和转子。
可选地，所述调磁转子的外侧壁固定连接在所述外壳的内壁，所述上盖压合在所述调磁转子上，以防止所述调磁转子沿所述输出轴的轴向运动。
可选地，所述第二转子的外侧壁固定连接在所述上盖的内壁，所述上盖压合在所述第二转子上，以防止所述第二转子沿所述输出轴的轴向运动。
可选地，所述电机还包括第二止推轴承，所述第二止推轴承套接在所述输出轴外且与所述上盖连接。
可选地，所述第二止推轴承与所述输出轴固定连接，所述第二止推轴承的下侧壁与所述上盖固定连接。
可选地，所述电机还包括第一深沟球轴承，所述第一深沟球轴承套接在所述输出轴外且与所述第一转子连接。
可选地，所述第一深沟球轴承的内壁固定连接于所述输出轴，所述第一深沟球轴承的外壁与所述第一转子固定连接。
可选地，所述磁齿轮组件为径向磁齿轮组件；所述第一转子、所述调磁转子以及所述第二转子沿所述输出轴的径向依次套设在所述输出轴外。
可选地，所述第一转子与所述调磁转子之间，以及所述调磁转子与所述第二转子之间皆形成有径向的间隙。
可选地，所述调磁转子内设置有用于所述输出轴穿设的通孔，所述输出轴穿设于所述通孔且可在所述通孔内转动；
所述调磁转子内设置有容纳槽，所述定子套接在所述输出轴外，且固定于所述容纳槽内，所述第一转子的至少部分延伸至所述容纳槽内，所述转子固定于所述第一转子延伸至所述容纳槽内的部分且与所 述定子相对间隔设置。
可选地，所述电机还包括第二深沟球轴承，所述第二深沟球轴承设置于所述第一转子和所述第二转子之间。
可选地，所述第二深沟球轴承的内壁与所述第二转子连接，所述第二深沟球轴承的外壁与所述第一转子连接。
可选地，所述电机还包括第三深沟球轴承，所述第三深沟球轴承设置于所述输出轴与所述调磁转子之间。
可选地，所述第三深沟球轴承的内壁与所述输出轴固定连接，所述第三深沟球轴承的外壁与所述调磁转子固定连接。
可选地，所述电机还包括至少一个第四深沟球轴承，所述第四深沟球轴承设置于所述第一转子和所述调磁转子之间。
可选地，所述第四深沟球轴承的内壁与所述第一转子连接，所述第四深沟球轴承的外壁与所述调磁转子连接。
可选地，所述定子为线圈，所述转子为磁性件。
可选地，所述支架包括横滚轴支架、俯仰轴支架和偏航轴支架中的至少一个，所述电机包括以下中的至少一个：
横滚驱动电机，用于驱动所述横滚轴支架绕横滚轴转动；
俯仰驱动电机，用于驱动所述俯仰轴支架绕俯仰轴转动；
偏航驱动电机，用于驱动所述偏航轴支架绕偏航轴转动。
第二方面，本申请实施例还公开了一种无人飞行器，其特征在于，所述无人飞行器包括：无人飞行器本体、摄像设备以及上述任一项所述的云台；
其中，所述云台连接于所述无人飞行器本体，所述摄像设备搭载于所述云台。
本申请实施例中，由于磁齿轮组件的力矩输入端与电机的转子耦合，磁齿轮组件可以用于降低电机输出的转速，增大电机输出的扭矩，将电机输出的动力转变成大扭矩的输出，并传递至磁齿轮组件的力矩 输出端。由于力矩输出端与支架机械耦合，力矩输出端输出的动力可以驱动支架转动。由于磁齿轮组件的结构简单且尺寸皆较小，因此，磁齿轮组件可以在较小的空间内实现较大的扭矩传递，且扭矩传递的精度较高。而且，由于磁齿轮组件通过磁极的耦合实现扭矩的传递，因此，随着使用时间的延长，磁齿轮组件也不会出现磨损的现象，仍可实现较高的传动精度和较低的传动噪音。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示意性地示出了本申请实施例所述的一种云台的结构示意图；
图2示意性地示出了本申请实施例所述的另一种云台的结构示意图；
图3示意性地示出了本申请实施例所述的一种电机的结构示意图；
图4示意性地示出了图3所示的电机的分解结构示意图；
图5示意性地示出了图3所示的电机的剖面结构示意图；
图6示意性地示出了本申请实施例所述的另一种电机的结构示意图；
图7示意性地示出了图6所示的电机的分解结构示意图；
图8示意性地示出了图6所示的电机的剖面结构示意图；
图9示意性地示出了本申请实施例所述的再一种电机的结构示意 图；
图10示意性地示出了本申请实施例所述的又一种电机的结构示意图；
图11示意性地示出了本申请实施例所述的一种无人飞行器的结构示意图。
附图标记说明：10-支架，11-电机，111-定子，112-转子，113-外壳，114-输出轴，115-第一止推轴承，116-上盖，117-第二止推轴承，118-第一深沟球轴承，119-第二深沟球轴承，1110-第三深沟球轴承，1111-第四深沟球轴承，1112-位置检测传感器，11121-第一位置检测传感器，11122-第二位置检测传感器，12-磁齿轮组件，121-第一转子，1211-第一磁性元件，122-调磁转子，1221-导磁元件，123-第二转子，1231-第二磁性元件，1232-容纳槽，20-摄像设备，100-无人飞行器本体，300-云台。
具体实施例
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、 “横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
本申请实施例提供了一种云台，所述云台可以用于承载摄像设备，所述摄像设备可以包括但不局限于相机、终端设置、摄像机中的任意一种。所述云台可以用于安装、支撑所述摄像设备，并控制摄像设备转动或者移动，以实现拍摄设备的调节，丰富所述拍摄设备的功能和拍摄体验。
参照图1，示出了本申请实施例所述的一种云台的结构示意图，参照图2，示出了本申请实施例所述的另一种云台的结构示意图。参照图3，示出了本申请实施例所述的一种电机和磁齿轮组件的结构示意图，参照图4，示出了图3所示的电机和磁齿轮组件的分解结构示意图，参照图5，示出了图3所示的电机和磁齿轮组件的剖面结构示意图。参照图6，示出了本申请实施例所述的另一种电机和磁齿轮组件的结构示意图，参照图7，示出了图6所示的电机和磁齿轮组件的分解结构示意图，参照图8，示出了图6所示的电机的剖面结构示意图。
具体的，图1所述的云台可以为搭载在无人飞行器上的云台，所 述云台可以用于承载摄像设备20。所述云台可以用于控制摄像设备20沿俯仰轴、偏航轴或者横滚轴转动，以进行度多角度的拍摄，实现航拍功能。图2所示的云台为手持云台，所述手持云台可以内置平衡调节系统，通过设置和调整相机的平衡，可以提供稳定流畅的影像画质，满足日常拍摄和影视制作需求。
需要说明的是，本申请实施例中所述的云台可以为图1所示的搭载在无人飞行器上的云台，也可以为图2所示的手持云台，本申请实施例对于所述云台的具体类型可以不做限定。
具体的，所述云台具体可以包括：支架10，支架10可以用于承载摄像设备20；电机11，用于驱动支架10转动，电机11包括定子111和转子112；以及电调(图中未示出)，电调与电机11电连接，在所述电调控制下，电机11通电并输出动力。磁齿轮组件12，磁齿轮组件具体可以包括力矩输入端与力矩输出端，所述力矩输入端与转子112机械耦合，所述力矩输出端与支架10机械耦合；其中，电机11带动所述力矩输入端转动，经过磁齿轮组件12改变转动速度之后，所述力矩输出端驱动支架10转动，以改变所述摄像设备的姿态。
需要说明的是，支架10具体可以包括横滚轴支架、俯仰轴支架和偏航轴支架中的至少一个，本申请实施例对于支架10的具体内容可以不做限定。电机11包括以下中的至少一个：横滚驱动电机，用于驱动所述横滚轴支架绕横滚轴转动；俯仰驱动电机，用于驱动所述俯仰轴支架绕俯仰轴转动；偏航驱动电机，用于驱动所述偏航轴支架绕偏航轴转动。
本申请实施例中，电机11可以用于输出动力，由于磁齿轮组件12的力矩输入端与电机11的转子112耦合，磁齿轮组件12可以用于降低电机11输出的转速，增大电机11输出的扭矩，将电机11输出的动力转变成大扭矩的输出，并传递至磁齿轮组件12的力矩输出端。由于力矩输出端与支架10机械耦合，力矩输出端输出的动力可以驱动支架 10转动。由于磁齿轮组件12的结构简单且尺寸皆较小，因此，磁齿轮组件12可以在较小的空间内实现较大的扭矩传递，且扭矩传递的精度较高。而且，由于磁齿轮组件12通过磁极的耦合实现扭矩的传递，因此，随着使用时间的延长，磁齿轮组件12也不会出现磨损的现象，仍可实现较高的传动精度和较低的传动噪音。
在申请的一些可选实施例中，磁齿轮组件12可以为图3至图5所示的轴向磁齿轮组件。具体的，所述轴向磁齿轮组件的各部件可以沿轴向依次分布，因此，所述轴向磁齿轮组件沿轴向的高度较大，沿径向的宽度则相应较小。
在本申请的另一些可选实施例中，磁齿轮组件12还可以为图6至图8所示的径向磁齿轮组件。具体的，所述径向磁齿轮组件中的各部件可以沿径向依次分布，因此，所述径向磁齿轮组件沿径向的宽度较大，沿轴向的高度则相应较小。
在具体地应用中，本领域技术人员可以根据实际需要将磁齿轮组件12设置成所述轴向磁齿轮组件或者所述径向磁齿轮组件中的至少一种，以便于磁齿轮组件12在电机11中的布局，尽可能的减小电机11在所述云台中占空的空间。
例如，在所述云台中用于布置磁齿轮组件12的空间为扁平状空间的情况下，可以选择所述径向磁齿轮组件。又如，在所述云台中用于布置磁齿轮组件12的空间的高度允许的情况下，可以选择所述轴向磁齿轮组件，以尽可能的减小磁齿轮组件12的外径，从而，可以减小电机11的整体尺寸。
在本申请的一些可选实施例中，定子111与转子112呈径向排布，定子111位于转子112的内部，并且转子112与定子111间隔相对，并远离电机11的中心位置设置，即，电机11可以为外转子电机。由于外转子电机相比内转子电机结构可以做的更紧凑，因此，在电机为外转子电机的情况下，可以使得电机在所述云台中占用的空间更小， 有利于电机在所述云台中的布局。
可选地，磁齿轮组件12可以包括：依次设置的第一转子121、调磁转子122和第二转子123，第一转子121能够作为所述力矩输入端，调磁转子122或第二转子123能够作为所述力矩输出端，电机12输出的动力经由第一转子121、调磁转子122和第二转子123的调制后发生变化，实现扭矩的传递。
在具体的应用中，第一转子121可以与电机11的输出端连接，以将电机11输出的动力传递至第一转子121上，通过第一转子121、调磁转子122以及第二转子123的调制，电机11输出的动力可以发生扭矩变化并从调磁转子122或者第二转子123输出。
需要说明的是，调磁转子122或第二转子123皆能够作为所述力矩输出端，以使得电机11输出的动力得到不同程度的调制，实现不同的扭矩变化。示例的，调磁转子122或者第二转子123可以直接或者间接与支架10连接，本申请实施对于调磁转子122或者第二转子123与支架10之间的连接方式不做具体限定。
本申请实施例中，转子112可以固定于第一转子121，在定子111通电驱动转子112转动的情况下，转子112能够带动第一转子121一起转动。在具体的应用中，通过将转子112与第一转子121固定连接，可以避免在电机11与磁齿轮组件12之间设置传动机构，简化电机12的结构，从而，可以减小电机11和磁齿轮组件12的整体尺寸。
在本申请的一些可选实施例中，转子112与第一转子121可以过盈配合，以将转子112固定于第一转子121。在实际应用中，可以在第二转子123上设置用于容纳转子112的第一凹槽，所述第一凹槽的尺寸可以略大于转子112的尺寸，这样，将转子112嵌设于所述第一凹槽的情况下，可以实现转子112与第一转子121之间的过盈配合，实现方法简单，且无需引入额外的连接件。
在本申请的另一些可选实施例中，转子112可以粘接、卡接或者 通过紧固件连接于第一转子121，以将转子112固定于第一转子121。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
可选地，电机11还可以包括输出轴114，输出轴114可以与所述力矩输出端固定连接，即，将电机11的输出轴114作为动力的输出轴，与支架10直接或者间接连接，以使的电机11和磁齿轮组件12的结构更为紧凑，有利于电机11和磁齿轮组件12在所述云台中的布局。
在本申请的一些可选实施例中，电机11还可以包括外壳113，输出轴114至少部分设置于外壳113内，调磁转子122与输出轴114固定连接，第二转子123与定子111固定于外壳113内，调磁转子122与输出轴114能够相对于第二转子123与定子111转动，以实现动力的输出。
在实际应用中，通过将调制磁极122作为所述力矩输出端，直接或者间接与支架10连接，由于调制磁极122受到的内力较为均匀，其输出的力矩也更为稳定，这样，就可以稳定的驱动支架10转动，以改变摄像设备20的姿态。
在本申请的另一些可选实施例中，电机11还可以包括：外壳113，输出轴114至少部分设置于外壳113内；第二转子123与输出轴114固定连接，调磁转子122与定子111固定于外壳113内，第二转子123与输出轴114能够相对于调磁转子122与定子111转动，以实现动力的输出。
在实际应用中，可以将第二转子123作为所述力矩输出端，直接或者间接与支架10连接。由于电机11输出的动力可以依次经过第一转子121、调磁转子122以及第二转子123的调制，可以实现较大调制范围。这样，在第二转子123驱动支架10转动的过程中，可以使得支架10实现较大的转动范围。
参照图9，示出了本申请实施例所述的再一种电机的结构示意图，参照图10，示出了本申请实施例所述的又一种电机的结构示意图。具体的，电机11还可以包括位置检测传感器1112，位置检测传感器1112可以用于检测所述力矩输入端和所述力矩输出端的转动位置，所述电调可以与位置检测传感器1112电连接，所述电调可以用于，基于所述转动位置调节驱动第一转子121的控制信号，使所述力矩输出端转动至所述目标角度。
在具体的应用中，位置检测传感器1112可以用于检测所述力矩输入端和所述力矩输出端的转动位置，参照所述力矩输入端和所述力矩输出端的转动角度实现精确的角度控制，以使得所述力矩输出端能够精确的转动至所述目标角度，提高电机11对于支架10的驱动精确性，有利于支架10上的摄像设备20精确地转动至需要的位置，从而，可以实现所述云台对于摄像设备20的准确控制。
本申请实施例中，电调可以与定子111电连接，电调可以用于向定子111输出能够驱动第一转子121转动的控制信号，以使第一转子121的转动可以带动第二转子123转动至目标角度，实现扭矩的传递。
在具体的应用中，电调可以向定子111输出控制信号，以控制定子111通电。在定子111通电的情况下，可以形成电磁场以驱动转子112转动。由于转子112固定于第一转子121，在转子112转动的情况下，可以带动第一转子121转动，将动力输出至第一转子121。通过调磁转子122和第一转子121之间，以及调磁转子122与第二转子123之间的耦合作用，可以带动第二转子123转动所述目标角度，实现扭矩的传递。具体的，所述目标角度为将支架10上的摄像设备20调节至需要的位置时第二转子123对应的角度。
可选地，位置检测传感器1112可以包括霍尔传感器、光电传感器中的至少一种。本申请实施例对于位置检测传感器1112的具体内容可以不做限定。所述光电传感器可以包括但不局限于红外传感器、光敏 传感器等，本申请实施例对于所述光电传感器的具体内容可以不做限定。
可选地，位置检测传感器1112可以包括第一位置检测传感器11121和第二位置检测传感器11122，第一位置检测传感器11121可以靠近所述力矩输入端设置，以检测第所述力矩输入端的第一转动位置，第二位置检测传感器11122可以靠近所述力矩输出端设置，以检测所述力矩输出端的第二转动位置。示例的，所述力矩输入端可以为第一转子121，所述力矩输出端可以为第二转子123。
本申请实施例中，通过检测第一转子121的第一转动位置和第二转子123的第二转动位置，可以构成闭环检测，以使得第二转子123可以精确的转动至所述目标角度。
具体的，所述闭环检测的具体实现方式可以包括：电调在控制定子111时，可以给予定子111一个第一转子121正向旋转a度、第二转子123正向旋转b度的控制信号。然后，通过第一位置检测传感器11121检测第一转子121的第一转动位置，判断第一转子121是否正向旋转的a度。在第一转子121未按要求转动的情况下，实时调整驱动第一转子121的所述控制信号，直至第一转子121正向旋转a度。在第二转子123在第一转子121的带动下旋转的过程中，可以通过第二位置检测传感器11122检测第二转子123的第二转动位置，判断第二转子123是否正向旋转b度。在第二转子123未按要求转动的情况下，实时调整驱动所述第一转子121的所述控制信号，直至第二转子123正向旋转b度，到达所述目标角度。
可选地，定子111可以为线圈，转子112可以为磁性件，所述线圈可以与所述电调电连接，在所述电调的控制下，所述线圈能够通电并驱动所述磁性件运动，以输出动力。
具体的，所述电调可以用于所述线圈的通断电控制。在所述电调控制所述线圈通电的情况下，所述线圈可以形成电磁场。在所述电磁 场的作用下，所述磁性件可以转动，实现动力的输出。
可选地，所述线圈与所述磁性件相对间隔设置，所述磁性件可以套设在输出轴114外，在所述线圈通电的情况下能够驱动所述磁性件绕输出轴114转动，实现动力的输出。
具体的，所述线圈与所述磁性件可以相对间隔设置，并与所述磁性件之间形成间隙。示例的，所述磁性件可以设置在所述线圈的内侧或者设置在所述线圈的外侧，本申请实施例对于所述磁性件与所述线圈的相对位置可以不做限定。所述磁性件可以套设在输出轴114外，并与输出轴114之间形成间隙，因此，在所述磁性件在所述线圈的驱动下转动的情况下，所述磁性件可以绕输出轴114转动。
可选地，第一转子121包括第一磁性元件1211，第一磁性元件1211与转子112耦合，在转子112的触发下，第一转子121上的第一磁性元件1211能够产生具有第一谐波成分的第一磁场。调磁转子122包括导磁元件1221，导磁元件1221能够将所述第一磁场调制成具有第二谐波成分的第二磁场。所述第二谐波成分与第二转子123上的第二磁性元件1231产生的第三谐波成分匹配，以将输入磁齿轮组件12的动力进行传递与调制。
可选地，导磁元件1221可以为硅钢片或导磁钢块中的至少一种，以实现导磁的功能。本申请实施例对于导磁元件1221的具体材质可以不做限定。
在具体的应用中，第一磁性元件1211的对数、导磁元件1221的对数以及第二磁性元件1231的对数皆不同。第一磁性元件1211与导磁元件1221之间，以及导磁元件1221与第二磁性元件1231之间皆可形成较小的空气间隙，以隔开第一磁性元件1211和导磁元件1221，以及，隔开导磁元件1221和第二磁性元件1231。
具体的，由于第一磁性元件1211与转子112耦合，在转子112转动的情况下，转子112可以触发第一磁性元件1211形成具有第一谐波 成分的第一磁场。由于导磁元件1221与第一磁性元件1211耦合，导磁元件1221能够将所述第一磁场调制成具有第二谐波成分的第二磁场。导磁元件1221另一侧的第二磁性元件1231能够产生具有第三谐波成分的第三磁场，由于所述第二磁场的第二磁波成分能够与所述第三磁场的第三谐波成分匹配，所述第二磁场和所述第三磁场能够相互作用，从而实现扭矩的传递。
在实际应用中，为了实现扭矩的传递，并使得扭矩密度最高，第一磁性元件1211的对数Po、导磁元件1221的对数Pi以及第二磁性元件1231的对数Ps需要遵循以下关系：
Po＝Ps–Pi       (公式一)
示例的，在第一磁性元件1211的对数Po为4对、导磁元件1221的对数Pi为15对、第二磁性元件1231的对数Ps为11对的情况下，各磁极的对数可以满足公式一。这样，在转子112的触发下，第一转子121上的4对第一磁性元件1211可以产生一个4次谐波成本占主导的第一磁场。所述第一磁场经过调磁转子122上的15对导磁元件1221的调制，可以产生一个11次谐波占主导的第二磁场。由于第二转子123上的11对磁极可以产生一个11次谐波占主导的第三磁场，所述第二磁场的11次谐波能够与所述第三磁场的11次谐波能够相互作用，实现扭矩的传递。
当然，在实际应用中，第一磁性元件1211的对数、导磁元件1221的对数以及第二磁性元件1231的对数在满足公式一的情况下，可以根据实际情况进行设定，本申请实施例对此不做具体限定。
可选地，定子111与外壳113可以过盈配合，以将定子111固定于外壳113。在实际应用中，可以在外壳113上设置用于容纳定子111的第二凹槽，所述第二凹槽的尺寸可以略大于定子111的尺寸。这样，将定子111嵌设于所述第二凹槽的情况下，可以实现定子111与外壳113之间的过盈配合，实现方法简单，且无需引入额外的连接件。
可选地，定子111可以粘接、卡接或者通过紧固件连接于外壳113，以将定子111固定于外壳113。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
在本申请的一些可选实施例中，第一转子121、调磁转子122以及第二转子123皆可套接在输出轴114外，第一转子121转动连接于输出轴114，调磁转子122固定连接于外壳113，第二转子123与输出轴114连接；在转子112的触发下，第一转子121能够绕输出轴114转动，第一转子121的转动能够触发第二转子123和输出轴114一起转动，这样，就可以实现第一转子121与第二转子123之间的相对转动，以实现扭矩的传递。
具体的，在定子111通电的情况下，可以驱动转子112带动第一转子121一起绕输出轴114转动。由于调磁转子122固定于外壳113，调磁转子122不会发生转动。第一转子121的转动能够触发第二转子123跟输出轴114一起转动，通过第一转子121与输出轴114之间的相对转动，可以实现扭矩的传递，并且，通过输出轴114的转动，可以最终输出所述扭矩。
在本申请的一些可选实施例中，第二转子123与输出轴114可以为一体成型结构，以实现第一转子121与输出轴114之间的固定连接。在第二转子123与输出轴114为一体成型结构的情况下，第二转子123与输出轴114之间的连接强度较高，而且，可以避免单独加工这两个部件的工艺，简化加工工艺。具体的，可以通过机加工、铸造等加工方式将第二转子123和输出轴114加工成一体成型结构，本申请实施例对于所述一体成型结构的加工方式不做具体限定。
在本申请的另一些可选实施例中，第二转子123与输出轴114为分体结构，第二转子123固定连接于输出轴114，以实现第二转子123与输出轴114的同步转动。在具体的应用中，在第二转子123与输出 轴114为分体结构的情况下，可以使得第二转子123和输出轴114的结构都较为简单，加工难度较低。
可选地，第二转子123与输出轴114可以过盈配合，以将第二转子123固定于输出轴114。在实际应用中，可以在输出轴114上设置用于容纳第二转子123的第三凹槽，所述第三凹槽的尺寸可以略大于第二转子123的尺寸。这样，将第二转子123嵌设于所述第三凹槽的情况下，可以实现第二转子123与输出轴114之间的过盈配合，实现方法简单，且无需引入额外的连接件。
可选地，第二转子123粘接、卡接或者通过紧固件连接于输出轴114，以将第二转子123固定于输出轴114。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
在本申请的一些可选实施例中，磁齿轮组件12可以为图3至图5所示的轴向磁齿轮组件，第一转子121、调磁转子122以及第二转子123可以沿输出轴114的轴向依次套设在输出轴114上。所述轴向磁齿轮组件沿输出轴114的轴向的高度较大，沿径向的宽度则相应较小。
具体的，在磁齿轮组件12为轴向磁齿轮组件的情况下，第一转子121与调磁转子122之间，以及调磁转子122与以及第二转子123之间皆可形成轴向的间隙。这样，就可以沿输出轴114的轴向隔开第一磁性元件1211和导磁元件1221，以及，隔开导磁元件1221和第二磁性元件1231，以实现第二转子123与调磁转子122之间，以及调磁转子122与第二转子123之间的轴向耦合。
如图5所示，定子111套接在输出轴114外且固定于外壳113，转子112固定于第一转子121且与定子111相对间隔设置，以实现转子112与定子111之间的耦合。这样，在定子111通电的情况下，可以驱动转子112带动第一转子121一起转动。
如图4、图5所示，电机11还可以包括第一止推轴承115，第一 止推轴承115套接在输出轴114外，且位于第一转子121和第二转子123之间。第一止推轴承115可以用于承受轴向的载荷，避免第一转子121和第二转子123发生轴向的运动。这样，就可以进一步的提升第一转子121和第二转子123绕输出轴114转动的可靠性。
可选地，第一止推轴承115的上侧壁和下侧壁的其中之一与第一转子121固定连接，所述上侧壁和所述下侧壁中的其中另一与第二转子123固定连接，所述上侧壁与所述下侧壁之间可相对转动。这样，第一止推轴承115在承受轴向载荷的同时，由于所述上侧壁与所述下侧壁之间可相对转动，还可以便于第一转子121和第二转子123之间的相对转动。
需要说明的是，图5中仅示出了第一转子121、调磁转子122以及第二转子123沿输出轴114从下至上依次分布的情况。在这种情况下，第一止推轴承115的上侧壁与第二转子123连接，第一止推轴承115的下侧壁与第一转子121连接。而在第一转子121、调磁转子122以及第二转子123沿输出轴114从上至下依次分布的情况，第一止推轴承115的下侧壁与第二转子123连接，第一止推轴承115的上侧壁与第一转子121连接。
本申请实施例中，第一止推轴承115可以套接在输出轴114外，且二者的相对位置保持不变。示例的，第一止推轴承115可以固定连接于输出轴114，以实现第一止推轴承115与输出轴114的同步转动。
可选地，第一止推轴承115的内壁可以与输出轴114过盈配合，以将第一主止推轴承固定于输出轴114。在实际应用中，可以在输出轴114上设置用于容纳第一止推轴承115的第四凹槽，所述第四凹槽的尺寸可以略大于第一止推轴承115的尺寸。这样，将第一止推轴承115嵌设于所述第四凹槽的情况下，可以实现第一止推轴承115与输出轴114之间的过盈配合，实现方法简单，且无需引入额外的连接件。
可选地，第一止推轴承115可以粘接、卡接或者通过紧固件连接 于输出轴114，以将第一止推轴承115固定于输出轴114。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉、键等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
本申请实施例中，电机11还可以包括上盖116，上盖116套接在输出轴114外且与外壳113的顶部连接，上盖116与外壳113能够围合形成容纳空间，所述容纳空间能够容纳磁齿轮组件12、电机11的定子111和转子112。
具体的，上盖116可以固定于外壳113的顶部并与外壳113固定连接。上盖116可以与外壳113形成一个相对封闭的容纳空间，以对所述容纳空间内的磁齿轮组件12和无刷电机111、定子111和转子112形成保护。
可选地，调磁转子122的外侧壁固定连接在外壳113的内壁，上盖116压合在调磁转子122上，以防止调磁转子122沿输出轴114的轴向运动。这样，就可以将调磁转子122固定在外壳113上，且可避免调磁转子122沿输出轴114的轴向运动，提高调磁转子122与外壳113之间的连接可靠性。
可选地，电机11还可以包括第二止推轴承117，第二止推轴承117套接在输出轴114外且与上盖116连接。第二止推轴承117可以用于承受轴向的载荷，避免上盖116发生轴向的运动。这样，就可以进一步的提升上盖116绕输出轴114转动的可靠性，以及，提高上盖116压合调磁转子122的稳定性。
本申请实施例中，第二止推轴承117与输出轴114固定连接，以实现第二止推轴承117与输出轴114的同步转动。第二止推轴承117的下侧壁与上盖116固定连接，以使得上盖116可以相对第二止推轴承117转动，从而，可以实现上盖116与输出轴114之间的相对转动。
可选地，第二止推轴承117的内壁与输出轴114过盈配合，以将 第二主止推轴承固定于输出轴114。在实际应用中，可以在输出轴114上设置用于容纳第二止推轴承117的第五凹槽，第五凹槽的尺寸可以略大于第二止推轴承117的尺寸。这样，将第二止推轴承117嵌设于所述第五凹槽的情况下，可以实现第二止推轴承117与输出轴114之间的过盈配合，实现方法简单，且无需引入额外的连接件。
可选地，第二止推轴承117的内部粘接、卡接或者通过紧固件连接于输出轴114，以将第二止推轴承117固定于输出轴114。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉、键等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
可选地，电机11还可以包括第一深沟球轴承118，第一深沟球轴承118套接在输出轴114外且与第一转子121连接。第一深沟球轴承118用于配合第二止推轴承117，抵消输出轴114所受的端部扭矩，确保输出轴114可以顺利转动。
在具体的应用中，由于第二止推轴承117连接在输出轴114的顶部，因此，输出轴114的顶部会受到端部扭矩。通过将第二深沟球轴承118连接在输出轴114的底部，可以抵消输出轴114所受的端部扭矩，从而，可以使得输出轴114受力较为均匀，确保输出轴114可以顺利转动。
本申请实施例中，第一深沟球轴承118的内壁固定连接于输出轴114，以将第一深沟球轴承118固定于输出轴114。第一深沟球轴承118的外壁与第一转子121固定连接，以将第一深沟球轴承118固定于第二转子123。由于第一深沟球轴承118和外壁与内壁可以相对转动，这样，就可以便于第一转子121绕输出轴114转动。
可选地，第一深沟球轴承118的内壁与输出轴114过盈配合，以将第一深沟球轴承118固定于输出轴114。在实际应用中，可以在输出轴114上设置用于容纳第一深沟球轴承118的第六凹槽，所述第六凹 槽的尺寸可以略大于第一深沟球轴承118的尺寸。这样，将第一深沟球轴承118嵌设于所述第六凹槽的情况下，可以实现第一深沟球轴承118与输出轴114之间的过盈配合，实现方法简单，且无需引入额外的连接件。
可选地，第一深沟球轴承118的内壁粘接、卡接或者通过紧固件连接于输出轴114，以将第一深沟球轴承118固定于输出轴114。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉、键等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
在本申请的一些可选实施例中，磁齿轮组件12还可以为图6至图8所示的径向磁齿轮组件；第一转子121、调磁转子122以及第二转子123沿输出轴114的径向依次套设在输出轴114外。所述轴向磁齿轮组件沿轴向的高度较小，沿径向的宽度则相应较大。
具体的，第一转子121与调磁转子122之间，以及调磁转子122与第二转子123之间皆形成径向的间隙。这样，就可以沿输出轴114的径向隔开第一磁性元件1211和导磁元件1221，以及，隔开导磁元件1221和第二磁性元件1231，以实现第二转子123与调磁转子122之间，以及调磁转子122与第二转子123之间的径向耦合。
如图8所示，调磁转子122内设置有用于输出轴114穿设的通孔，输出轴114穿设于所述通孔且可在所述通孔内转动；调磁转子122内设置有容纳槽1232，定子111套接在输出轴114外，且固定于容纳槽1232内，以实现定子111与调磁转子122之间的固定连接。第一转子121的至少部分延伸至容纳槽1232内，转子112固定于第一转子121延伸至容纳槽1232内的部分且与定子111相对间隔设置，以实现转子112与定子111之间的耦合。这样，在定子111通电的情况下，可以驱动转子112带动第一转子121一起转动。
可选地，定子111与调磁转子122过盈配合，以将定子111固定 于调磁转子122。在实际应用中，可以在调磁转子122上设置用于容纳定子111的第七凹槽，所述第七凹槽的尺寸可以略大于定子111的尺寸。这样，将定子111嵌设于所述第七凹槽的情况下，可以实现定子111与调磁转子122之间的过盈配合，实现方法简单，且无需引入额外的连接件。
可选地，定子111粘接、卡接或者通过紧固件连接于调磁转子122，以将定子111固定于调磁转子122。在实际应用中，可以通过胶带、胶水等粘接介质实现二者的粘接，以及，通过螺栓、螺钉、键等紧固件实现二者之间的固定连接，本申请实施例对此不做限定。
可选地，电机11还可以包括第二深沟球轴承119，第二深沟球轴承119设置于第一转子121和第二转子123之间，以实现第二转子123的平稳转动。
在实际应用中，第二深沟球轴承119可以设置在输出轴114的底部，抵消输出轴114的端部扭矩，从而，可以实现套设在输出轴114底部的第二转子123的平稳转动。
可选地，第二深沟球轴承119的内壁与第二转子123连接，以将第二深沟球轴承119固定于第二转子123。第二深沟球轴承119的外壁与第一转子121连接，以将第二深沟球轴承119固定于第一转子121。由于第二深沟球轴承119和外壁与内壁可以相对转动，这样，就可以便于第二转子123绕第一转子121转动。
可选地，电机11还包括第三深沟球轴承1110，第三深沟球轴承1110设置于输出轴114与调磁转子122之间，以实现调磁转子122绕输出轴114的平稳转动。
在实际应用中，第三深沟球轴承1110可以设置在输出轴114的顶部，抵消输出轴114的端部扭矩，从而，可以实现套设在输出轴114顶部的调磁转子122的平稳转动。
可选地，第三深沟球轴承1110的内壁与输出轴114固定连接，以 将第三深沟球轴承1110固定于输出轴114。第三深沟球轴承1110的外壁与调磁转子122固定连接，以将第三深沟球轴承1110固定于调磁转子122。由于第三深沟球轴承1110和外壁与内壁可以相对转动，这样，就可以便于输出轴114在调磁转子122的通孔内转动。
可选地，电机11还可以包括至少一个第四深沟球轴承1111，第四深沟球轴承1111设置于第一转子121和调磁转子122之间，以实现第一转子121绕调磁转子122的平稳转动。
在实际应用中，第四深沟球轴承1111可以设置在第一转子121与调磁转子122之间，承受第一转子121与调磁转子122之间的径向载荷，从而，可以实现套设在调磁转子122外的第一转子121的平稳转动。
具体的，在第四深沟球轴承1111的数量为2个或者2个以上的情况下，可以使得单个第四深沟球轴承1111的高度较低，结构较为简单。
需要说明的是，本申请实施例的附图中，仅示出了第四深沟球轴承1111的数量为两个的情况，而在实际应用中，第四深沟球轴承1111的数量可以根据实际情况进行设定，例如。1个、4个或者5个等。本申请实施例对于第四深沟球轴承1111的数量不做具体限定。
可选地，第四深沟球轴承1111的内壁与第一转子121连接，以将第四深沟球轴承1111固定于第一转子121。第四深沟球轴承1111的外壁与调磁转子122连接，以将第四深沟球轴承1111固定于调磁转子122。由于第四深沟球轴承1111和外壁与内壁可以相对转动，这样，就可以便于第一转子121绕调磁转子122的平稳转动。
综上，本申请实施所述的云台至少可以包括以下优点：
本申请实施例中，由于磁齿轮组件的力矩输入端与电机的转子耦合，磁齿轮组件可以用于降低电机输出的转速，增大电机输出的扭矩，将电机输出的动力转变成大扭矩的输出，并传递至磁齿轮组件的力矩输出端。由于力矩输出端与支架机械耦合，力矩输出端输出的动力可 以驱动支架转动。由于磁齿轮组件的结构简单且尺寸皆较小，因此，磁齿轮组件可以在较小的空间内实现较大的扭矩传递，且扭矩传递的精度较高。而且，由于磁齿轮组件通过磁极的耦合实现扭矩的传递，因此，随着使用时间的延长，磁齿轮组件也不会出现磨损的现象，仍可实现较高的传动精度和较低的传动噪音。
参照图11，示出了本申请实施例所述的一种无人飞行器的结构示意图，如图11所示，所述无人飞行器具体可以包括：无人飞行器本体100、摄像设备20以及上述各实施例所述的云台300；其中，云台300连接于无人飞行器本体100，摄像设备20搭载于云台300。
具体地，无人飞行器本体100可以为所述无人飞行器的主体部件，例如，机身、中心体等，云台300的结构可以与前述任一实施例所述的云台300相同，在此不做赘述。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部组件来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本申请的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本申请的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
在权利要求中，不应将位于括号之间的任何参考符号构造成对权 利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本申请可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (37)

  1. 一种云台，其特征在于，所述云台包括：
    支架，用于承载摄像设备；
    电机，用于驱动所述支架转动，所述电机包括定子和转子；
    电调，所述电调与所述电机电连接，用于控制所述电机运转，其中，所述电机与所述电调电连接，在所述电调控制下，所述电机通电并输出动力；以及
    磁齿轮组件，所述磁齿轮组件包括力矩输入端与力矩输出端，所述力矩输入端与所述转子机械耦合，所述力矩输出端与所述支架机械耦合；
    其中，所述电机带动所述力矩输入端转动，经过所述磁齿轮组件改变转动速度之后，所述力矩输出端驱动所述支架转动，以改变所述摄像设备的姿态。
  2. 根据权利要求1所述的云台，其特征在于，所述定子与所述转子呈径向排布，所述定子位于所述转子的内部，并且所述转子与所述定子间隔相对，并远离所述电机的中心位置设置。
  3. 根据权利要求1所述的云台，其特征在于，所述磁齿轮组件包括：依次设置的第一转子、调磁转子和第二转子，所述第一转子作为所述力矩输入端，所述调磁转子或所述第二转子能够作为所述力矩输出端，所述电机输出的动力经由所述第一转子、所述调磁转子和所述第二转子的调制后发生变化。
  4. 根据权利要求3所述的云台，其特征在于，所述转子固定于所述第一转子，在所述定子通电驱动所述转子转动的情况下，所述转子能够带动所述第一转子一起转动。
  5. 根据权利要求3所述的云台，其特征在于，所述电机还包括输出轴，所述输出轴与所述力矩输出端固定连接。
  6. 根据权利要求5所述的云台，其特征在于，所述电机还包括： 外壳，所述输出轴至少部分设置于所述外壳内；所述调磁转子与所述输出轴固定连接，所述第二转子与所述定子固定于所述外壳内，所述调磁转子与所述输出轴能够相对于所述第二转子与定子转动。
  7. 根据权利要求5所述的云台，其特征在于，所述电机还包括：外壳，所述输出轴至少部分设置于所述外壳内；所述第二转子与所述输出轴固定连接，所述调磁转子与所述定子固定于所述外壳内，所述第二转子与所述输出轴能够相对于所述调磁转子与所述定子转动。
  8. 根据权利要求1所述的云台，其特征在于，所述电机还包括位置检测传感器，所述位置检测传感器用于检测所述力矩输入端和力矩输出端的转动位置，所述电调与所述位置检测传感器电连接，所述电调用于，基于所述转动位置调节驱动所述第一转子的控制信号，使所述力矩输出端转动至所述目标角度。
  9. 根据权利要求8所述的云台，其特征在于，所述位置检测传感器包括霍尔传感器、光电传感器中的至少一种。
  10. 根据权利要求8所述的云台，其特征在于，所述位置检测传感器包括第一位置检测传感器和第二位置检测传感器，所述第一位置检测传感器用于检测所述力矩输入端的第一转动位置，所述第二位置检测传感器用于检测所述力矩输出端的第二转动位置。
  11. 根据权利要求3所述的云台，其特征在于，所述第一转子包括第一磁性元件，所述第一磁性元件能够产生具有第一谐波成分的第一磁场；所述调磁转子包括导磁元件，所述导磁元件能够将所述第一磁场调制成具有第二谐波成分的第二磁场；所述第二谐波成分与所述第二转子上的第二磁性元件所产生的第三谐波成分匹配，以将输入所述磁齿轮组件的动力进行传递与调制。
  12. 根据权利要求11所述的云台，其特征在于，所述导磁元件为硅钢片或导磁钢块中的一种。
  13. 根据权利要求1所述的云台，其特征在于，所述磁齿轮组件 包括：轴向磁齿轮组件和径向磁齿轮组件中的至少一种。
  14. 根据权利要求5所述的云台，其特征在于，所述磁齿轮组件为轴向磁齿轮组件；所述第一转子、所述调磁转子以及所述第二转子沿所述输出轴的轴向依次套设在所述输出轴上。
  15. 根据权利要求14所述的云台，其特征在于，所述第一转子与所述所调磁转子之间，以及所述调磁转子与所述第二转子之间皆形成有轴向的间隙。
  16. 根据权利要求14所述的云台，其特征在于，所述电机还包括第一止推轴承，所述第一止推轴承套接在所述输出轴外，且位于所述第一转子和所述第二转子之间。
  17. 根据权利要求16所述的云台，其特征在于，所述第一止推轴承的上侧壁和下侧壁的其中之一与所述第一转子固定连接，所述上侧壁和所述下侧壁中的其中另一与所述第二转子固定连接，所述上侧壁与所述下侧壁之间可相对转动。
  18. 根据权利要求16所述的云台，其特征在于，所述第一止推轴承套接在所述输出轴外，且两者相对位置保持不变。
  19. 根据权利要求14所述的云台，其特征在于，所述电机还包括上盖，所述上盖套接在所述输出轴外且与所述外壳的顶部连接，所述上盖与所述外壳能够合围形成容纳空间，所述容纳空间能够容纳所述磁齿轮组件、定子和转子。
  20. 根据权利要求19所述的云台，其特征在于，所述调磁转子的外侧壁固定连接在所述外壳的内壁，所述上盖压合在所述调磁转子上，以防止所述调磁转子沿所述输出轴的轴向运动。
  21. 根据权利要求19所述的云台，其特征在于，所述第二转子的外侧壁固定连接在所述上盖的内壁，所述上盖压合在所述第二转子上，以防止所述第二转子沿所述输出轴的轴向运动。
  22. 根据权利要求19所述的云台，其特征在于，所述电机还包括 第二止推轴承，所述第二止推轴承套接在所述输出轴外且与所述上盖连接。
  23. 根据权利要求22所述的云台，其特征在于，所述第二止推轴承与所述输出轴固定连接，所述第二止推轴承的下侧壁与所述上盖固定连接。
  24. 根据权利要求14所述的云台，其特征在于，所述电机还包括第一深沟球轴承，所述第一深沟球轴承套接在所述输出轴外且与所述第一转子连接。
  25. 根据权利要求24所述的云台，其特征在于，所述第一深沟球轴承的内壁固定连接于所述输出轴，所述第一深沟球轴承的外壁与所述第一转子固定连接。
  26. 根据权利要求5所述的云台，其特征在于，所述磁齿轮组件为径向磁齿轮组件；所述第一转子、所述调磁转子以及所述第二转子沿所述输出轴的径向依次套设在所述输出轴外。
  27. 根据权利要求26所述的云台，其特征在于，所述第一转子与所述调磁转子之间，以及所述调磁转子与所述第二转子之间皆形成有径向的间隙。
  28. 根据权利要求26所述的云台，其特征在于，所述调磁转子内设置有用于所述输出轴穿设的通孔，所述输出轴穿设于所述通孔且可在所述通孔内转动；
    所述调磁转子内设置有容纳槽，所述定子套接在所述输出轴外，且固定于所述容纳槽内，所述第一转子的至少部分延伸至所述容纳槽内，所述转子固定于所述第一转子延伸至所述容纳槽内的部分且与所述定子相对间隔设置。
  29. 根据权利要求26所述的云台，其特征在于，所述电机还包括第二深沟球轴承，所述第二深沟球轴承设置于所述第一转子和所述第二转子之间。
  30. 根据权利要求29所述的云台，其特征在于，所述第二深沟球轴承的内壁与所述第二转子连接，所述第二深沟球轴承的外壁与所述第一转子连接。
  31. 根据权利要求26所述的云台，其特征在于，所述电机还包括第三深沟球轴承，所述第三深沟球轴承设置于所述输出轴与所述调磁转子之间。
  32. 根据权利要求31所述的云台，其特征在于，所述第三深沟球轴承的内壁与所述输出轴固定连接，所述第三深沟球轴承的外壁与所述调磁转子固定连接。
  33. 根据权利要求26所述的云台，其特征在于，所述电机还包括至少一个第四深沟球轴承，所述第四深沟球轴承设置于所述第一转子和所述调磁转子之间。
  34. 根据权利要求33所述的云台，其特征在于，所述第四深沟球轴承的内壁与所述第一转子连接，所述第四深沟球轴承的外壁与所述调磁转子连接。
  35. 根据权利要求1所述的云台，其特征在于，所述定子为线圈，所述转子为磁性件。
  36. 根据权利要求1所述的云台，其特征在于，所述支架包括横滚轴支架、俯仰轴支架和偏航轴支架中的至少一个，所述电机包括以下中的至少一个：
    横滚驱动电机，用于驱动所述横滚轴支架绕横滚轴转动；
    俯仰驱动电机，用于驱动所述俯仰轴支架绕俯仰轴转动；
    偏航驱动电机，用于驱动所述偏航轴支架绕偏航轴转动。
  37. 一种无人飞行器，其特征在于，所述无人飞行器包括：无人飞行器本体、摄像设备以及权利要求1至36任一项所述的云台；
    其中，所述云台连接于所述无人飞行器本体，所述摄像设备搭载于所述云台。
PCT/CN2022/120492 2022-09-22 2022-09-22 云台和无人飞行器 WO2024060123A1 (zh)

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