Abstract: An absorbable iron-based alloy implantable medical device includes an iron-based alloy matrix, a degradable polymer coating disposed on the surface of the iron-based alloy matrix, and a corrosion inhibition layer disposed on the surface of the iron-based alloy matrix. The corrosion inhibition layer can delay early-stage corrosion of the iron-based alloy matrix, ensure mechanical performance of a medical device in the early stage of the implantation, prevent degradation of a polymer in the early stage of the implantation of the medical device, and reduce the usage of the degradable polymer, thereby reducing risks of inflammatory reactions.

Abstract: A dual-redundancy flight control system, comprises a master control system and a secondary control system. The master control system comprises a master controller, and further comprises a first inertial measurement unit (IMU), a first magnetic compass unit, and a first satellite navigation unit, each of which being connected to the master controller respectively. The secondary control system comprises a secondary controller, and further comprises a second IMU, a second magnetic compass unit, and a second satellite navigation unit, each of which being connected to the secondary controller respectively. The secondary controller is connected to the master controller via a data bus, and the master controller is connected to an electronic speed regulator of an aircraft for controlling the flight actions of the aircraft.

Abstract: The invention discloses an absorbable iron-based alloy stent, comprising an iron-based alloy substrate and a degradable polyester in contact with the surface of the substrate, in which the degradable polyester has a weight average molecular weight of between 20,000 and 1,000,000 and a polydispersity index of between 1.2 and 30. With the degradable polyester, the iron-based alloy is capable of corroding rapidly and controllably within a predetermined period. Following implantation into the human body, the degradable stent serves as a mechanical support at early stage, then gradually degrading and being metabolized and absorbed by the human body. During the process of degradation, minimal or no solid product is produced. Ultimately, the configuration of the lumen with an implanted stent as well as the systolic and diastolic functions thereof return to their natural states.

Abstract: A gimbal assembly and a hand-held device are provided. The gimbal assembly includes a gimbal, an image pick-up device and a light-transmitting cover covering the gimbal and the image pick-up device. The gimbal includes a holding assembly, the holding assembly is configured to drive the image pick-up device to rotate around at least one axis in the light-transmitting cover. The at least one axis passes through a spherical center of the light-transmitting cover, and upon the image pick-up device rotating, an optical axis of a lens of the image pick-up device always coincides with a normal line of a tangent plane at an intersection of the optical axis and the light-transmitting cover.

Abstract: A gimbal includes a base and a fixing support rotatably provided on the base, wherein the fixing support includes a first mounting seat and a second mounting seat, and the second mounting seat is provided with an inner cavity therein. An unmanned aerial vehicle including a gimbal is also provided.

Abstract: A method of forming an electrode material includes: (1) loading an electrochemically active material onto graphene sheets; (2) combining the electrochemically active material-loaded graphene sheets with holey graphene oxide sheets to form a mixture; and (3) treating the mixture under reducing conditions to form a composite including a graphene framework loaded with the electrochemically active material.

Abstract: A degradable iron-based alloy stem comprises an iron-based alloy substrate and a degradable polymer in contact with the surface of the substrate. The weight-average molecular weight of the degradable polymer is in the range of [1, 100]*104, and the polydispersity index of the degradable polymer is in the range of (1.0. 50]. The degradable polymer is selected from a degradable polyamino acid that can generate an acidic amino acid after degradation; or a mixture of the degradable polyamino acid and a degradable polyester, or a copolymer of monomers of the two; or a mixture of the degradable polyamino acid and a degradable polymer that does not generate acidic products after degradation, or a copolymer of the monomers of the two; or a mixture of the degradable polyamino acid, the degradable polyester and the degradable polymer that does not generate acidic products after degradation, or a copolymer of monomers of the three, or a mixture of a copolymer of monomers of any two of the three with the remaining one.

Abstract: An electric motor, a gimbal and an unmanned aerial vehicle. The electric motor includes: a stator assembly; and a rotor assembly rotatably connected with the stator assembly. The stator assembly includes a stator housing for installation of a stator, the rotor assembly includes a rotor housing for installation of a rotor, and at least one of the stator housing and the rotor housing has a connecting arm. The gamble includes an electric motor group. At least one electric motor in the electric motor group is the above electric motor.

Abstract: A gimbal and a method for winding a flexible cable on a gimbal are provided. The gimbal includes a first motor and a second motor connected with each other. The flexible cable includes a connection unit and a connection end connected with each other, and the connection end is extended from the connection unit. The gimbal winding method includes winding the connection unit on the first motor while allowing the connection end to be electrically connected with the second motor.

Abstract: A method of winding a flexible cable, a carrying equipment and a gimbal are provided. The method is used for electrical connection in the carrying equipment, and includes winding a multilayer flexible cable provided in layered stack on a carrier device to form a winding structure, and the winding structure includes at least one force offsetting unit including a first bending part and a second bending part bent in opposite directions.

Abstract: A gimbal assembly and a hand-held device are provided. The gimbal assembly includes a gimbal, an image pick-up device and a light-transmitting cover covering the gimbal and the image pick-up device. The gimbal includes a holding assembly, the holding assembly is configured to drive the image pick-up device to rotate around at least one axis in the light-transmitting cover. The at least one axis passes through a spherical center of the light-transmitting cover, and upon the image pick-up device rotating, an optical axis of a lens of the image pick-up device always coincides with a normal line of a tangent plane at an intersection of the optical axis and the light-transmitting cover.

Abstract: A motor and a gimbal having the same. The motor includes a stator and a rotor, and further includes a connection shaft. The rotor is fixedly connected with the connection shaft, the connection shaft is rotatably connected with the stator through a bearing, and the connection shaft is provided in an axial direction thereof with a central through hole. The present disclosure further discloses a gimbal using the motor described above. In an embodiment, it is able to avoid the problem that a signal wire is wound and exposed outside the motor or the gimbal, solve the problem that the signal wire could be released or rewound with the positive or negative rotation of the motor, and reduce the length of the wire.

Abstract: A method for hand launching an unmanned aerial vehicle (UAV) includes detecting a first motion state of the UAV via a sensor, and controlling the UAV to enter into a launch mode according to the detected first motion state; and detecting a second motion state of the UAV via the sensor after the UAV enters into the launch mode, and controlling whether or not to activate a flight system of the UAV according to the detected second motion state.

Abstract: The present disclosure relates to the technical field of aircrafts and in particular to a gimbal and an aircraft having the same. The gimbal comprises a yaw axis motor, a rolling axis motor, a pitching axis motor and a control box. The yaw axis motor is connected with the rolling axis motor via a first connecting shaft arm, the rolling axis motor is connected with the pitching axis motor via a second connecting shaft arm, and the control box is located below the yaw axis motor or on the aircraft. In an embodiment, by disposing the control box below the yaw axis motor, the overall mass of a structure below the yaw axis motor can be increased, and the moment of inertia in the yaw axis increases correspondingly, thereby solving the problem of failure to achieve stability augmentation due to a small moment of inertia in the yaw axis.

Abstract: A dual-redundancy flight control system, comprises a master control system and a secondary control system. The master control system comprises a master controller, and further comprises a first inertial measurement unit (IMU), a first magnetic compass unit, and a first satellite navigation unit, each of which being connected to the master controller respectively. The secondary control system comprises a secondary controller, and further comprises a second IMU, a second magnetic compass unit, and a second satellite navigation unit, each of which being connected to the secondary controller respectively. The secondary controller is connected to the master controller via a data bus, and the master controller is connected to an electronic speed regulator of an aircraft for controlling the flight actions of the aircraft.

Abstract: A gimbal includes a base and a first support rotatably provided on the base; the first support is in an L-shape and includes a first arm and a second arm constructing the L shape, the first arm is rotatably connecting with the base; and the second arm includes a first electric motor fixing structure. An unmanned aerial vehicle including the gimbal is also provided.

Abstract: A gimbal includes a base and a fixing support rotatably provided on the base; the fixing support includes a support plate, a first mounting seat and a second mounting seat, the support plate is rotatably connected to the base; the first mounting seat and the second mounting seat are respectively fixed at both ends of the support plate; and the support plate, the first mounting seat and the second mounting seat collectively construct a U-shaped structure. An unmanned aerial vehicle including the gimbal is also disclosed.

Abstract: A gimbal includes a base and a fixing support rotatably provided on the base, wherein the fixing support includes a first mounting seat and a second mounting seat, and the second mounting seat is provided with an inner cavity therein. An unmanned aerial vehicle including a gimbal is also provided.

Abstract: A control system, a method for controlling an unmanned aerial vehicle (UAV), and a UAV-kit are provided. The control system includes an UAV configured to capture an image and transmit the captured image signal. The control system further includes a mobile terminal, wirelessly connected to the UAV, configured to receive the transmitted image signal and send a control signal to the UAV. The mobile terminal includes a pattern recognition data processing module for processing image captured by the UAV.

Abstract: The invention discloses an absorbable iron alloy stent, comprising an iron alloy substrate and a degradable polymer in contact with the surface of the substrate, in which the degradable polymer has a weight average molecular weight of more than or equal to 20,000 and less than or equal to 1,000,000 and a polydispersity index of more than 1.0 and less than or equal to 50. After the iron alloy stent is implanted into the body, the degradable polymer degrades to produce a carboxyl group. After the degradable stent is implanted into the human body, the effects of oxygen-consuming corrosion enable the stent both to mainly function as a mechanical support and then to degrade gradually, and the amount of hydrogen produced in the degradation process does not reach the level that can lead to a risk of air embolism.