Current impact suppression method, device and equipment for electric drive system of unmanned aerial vehicle

Abstract

The invention provides a current impact suppression method, device and equipment for an electric drive system of an unmanned aerial vehicle. The method comprises the following steps: determining a starting sequence of a plurality of motors in the unmanned aerial vehicle; and according to the starting sequence of the motors, the multiple motors in the unmanned aerial vehicle are started in sequence. According to the method, current impact suppression of the electric driving system of the unmanned aerial vehicle can be realized, the power supply unit, the electric driving system and the motor are effectively protected, and the operation stability of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a method, device and equipment for suppressing current impact of an electric drive system of a unmanned aerial vehicle. Background Art

[0002] The motors on the drone drive the rotors to rotate. A drone is generally equipped with multiple motors, and multiple motors share the same power system.

[0003] In the related technology, when a drone is started, starting multiple motors of the drone at the same time will superimpose the current shocks of multiple motor drivers, thereby generating a strong current shock, which will harm the power supply, electric drive system and the motor itself, affecting the safety of the drone equipment. Summary of the invention

[0004] The present invention provides a current impact suppression method, device and equipment for an electric drive system of a UAV, which are used to protect a power supply unit, an electric drive system and a motor of the UAV system, and improve the operation stability of the UAV system.

[0005] The present invention provides a method for suppressing current impact of an electric drive system of an unmanned aerial vehicle, comprising the following steps.

[0006] Determine the activation order of multiple motors in a drone; According to the starting sequence of the motors, multiple motors in the drone are started in sequence.

[0007] According to a current impact suppression method of an electric drive system of a drone provided by the present invention, the multiple motors in the drone are started in sequence according to the starting sequence of the motors, comprising: According to the starting sequence of the motors, determining the motor that needs to be started currently, and determining the starting result of the motor that needs to be started currently; When the starting result is successful, the remaining motors that have not been started are started in sequence according to the starting sequence of the motors.

[0008] According to a current impact suppression method for an electric drive system of a drone provided by the present invention, the step of determining a start result of a motor currently required to be started includes: Within a preset time period, if it is detected that the rotation speed of the motor currently required to be started is greater than a threshold and the current of the motor currently required to be started is within a preset interval, it is determined that the motor currently required to be started has been started successfully.

[0009] According to a current impact suppression method for an electric drive system of a drone provided by the present invention, when it is determined that the starting result of a motor currently required to be started is a starting failure, the starting of the drone is stopped.

[0010] According to a current impact suppression method of an electric drive system of a drone provided by the present invention, determining the start-up sequence of multiple motors in the drone includes: According to a preset rule, the plurality of motors are grouped to obtain a grouping result of the motors; According to the grouping result of the motors, a starting sequence of the motors is determined.

[0011] According to a current impact suppression method for an electric drive system of a drone provided by the present invention, in the grouping result of the motors, each group includes one or more motors.

[0012] According to a current surge suppression method for an electric drive system of a drone provided by the present invention, when the grouped groups include multiple motors, the starting order of the multiple motors in the same group is the same, and the starting order of motors in different groups is different.

[0013] The present invention also provides a current impact suppression device for an electric drive system of a drone, comprising the following modules: A determination module, used to determine the start sequence of multiple motors in the drone; The starting module is used to start the multiple motors in the drone in sequence according to the starting sequence of the motors.

[0014] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a current shock suppression method for an electric drive system of an unmanned aerial vehicle as described above is implemented.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the current shock suppression method of the electric drive system of the unmanned aerial vehicle as described in any one of the above-mentioned methods is implemented.

[0016] The present invention also provides a computer program product, comprising a computer program, which, when executed by a processor, implements a current shock suppression method for an electric drive system of a drone as described above.

[0017] The present invention also provides an unmanned aerial vehicle, comprising the current impact suppression device or electronic equipment of the electric drive system of the unmanned aerial vehicle.

[0018] The current shock suppression method, device and equipment of the electric drive system of the unmanned aerial vehicle provided by the present invention first determine the starting order of multiple motors in the unmanned aerial vehicle, and then start the multiple motors in the unmanned aerial vehicle in sequence according to the starting order of the motors, so as to avoid the strong current shock caused by starting multiple motors of the unmanned aerial vehicle at the same time, thereby reducing the current shock to the unmanned aerial vehicle system, realizing the current shock suppression of the electric drive system of the unmanned aerial vehicle, effectively protecting the power supply unit, the electric drive system and the motor itself, and improving the operating stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a flow chart of the current impact suppression method of the UAV electric drive system provided by the present invention.

[0021] Figure 2 It is a schematic diagram of current changes when the motor provided by the present invention is started.

[0022] Figure 3 It is a schematic diagram of the motor starting provided by the present invention.

[0023] Figure 4 It is a schematic diagram of the group starting of motors provided by the present invention.

[0024] Figure 5 It is a schematic diagram of the current impact suppression device of the UAV electric drive system provided by the present invention.

[0025] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Combine the following Figure 1-Figure 6 The present invention describes a method, device and apparatus for suppressing current surges in an electric drive system of a drone.

[0028] Figure 1 FIG. 1 is a flow chart of a current impact suppression method for an electric drive system of a UAV provided by the present invention. Figure 1 As shown, the method includes the following: Step 101: Determine the start sequence of multiple motors in the drone.

[0029] Specifically, the motor on the drone drives the rotor to rotate. A drone is generally equipped with multiple motors, and multiple motors share the same power supply. Among them, when the motor is started, the following phenomena exist: (1) When it is stationary, since there is no rotational motion, no back electromotive force caused by the change in the magnetic field is generated, and the back electromotive force is zero. (2) Acceleration is required to reach the target speed from zero speed. During the acceleration process, the control system needs to increase the current supplied to the motor, and the motor may experience a brief overload state. Figure 2 As shown in the figure, a large phase current in the startup phase is a characteristic of permanent magnet synchronous motors; during normal operation, since the motor is already in a stable operating state, the back electromotive force interacts with the power supply voltage, so that the phase current remains within the normal range. In the prior art, when a drone is started, starting multiple motors of the drone at the same time will superimpose the current impact of multiple motor drivers, thereby generating a strong current impact, which will cause damage to the power supply, electric drive system and the motor itself, affecting the safety of the drone equipment.

[0030] In order to solve the above problem, the startup sequence of multiple motors in the drone is first determined in the embodiment of the present application. Optionally, the startup sequence of multiple motors can be determined based on a pre-set rule, such as determining the startup sequence of the motors according to the position of each motor in the drone, or based on other factors, which is not limited in the embodiment of the present application.

[0031] Step 102: start the multiple motors in the drone in sequence according to the start-up sequence of the motors.

[0032] Specifically, after determining the start-up sequence of multiple motors in the drone, the multiple motors in the drone can be started in sequence according to the start-up sequence of the motors, thereby avoiding the strong current shock caused by starting multiple motors of the drone at the same time, thereby reducing the current shock to the drone system. At the same time, since the start-up time and the duration of the impact current of each motor are short, it will not have much impact on the total start-up time of the drone, so that the current shock suppression of the drone electric drive system will not affect the performance of the drone, effectively protecting the power supply unit, the electric drive system and the motor itself, and improving the operating stability of the motor.

[0033] It should be noted that a UAV (Unmanned Aerial Vehicle) is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device. The motor in a UAV is a permanent magnet synchronous motor (PMSM), which is a synchronous motor that uses permanent magnets to establish an excitation magnetic field. Inrush current, also known as surge current or transient current, refers to an abnormal current that is generated instantly in a circuit system and is much larger than the normal operating current due to some reason.

[0034] The method of the above embodiment first determines the starting sequence of multiple motors in the drone, and then starts each motor in the drone in turn according to the starting sequence of the motors, thereby avoiding the strong current shock generated by starting multiple motors of the drone at the same time, thereby reducing the current shock to the drone system, achieving current shock suppression of the drone electric drive system, effectively protecting the power supply unit, the electric drive system and the motor itself, and improving the operating stability of the motor.

[0035] In one embodiment, multiple motors in the drone are started in sequence according to the starting sequence of the motors, including: According to the starting sequence of the motors, the motors to be started are determined, and the starting results of the motors to be started are determined; When the startup result is successful, the remaining motors that have not been started are started in sequence according to the starting sequence of the motors.

[0036] Specifically, in order to avoid the strong current shock caused by starting multiple motors of the drone at the same time, the embodiments of the present application start each motor in the drone in sequence according to the start sequence of the motors. Optionally, after receiving the start command of the drone, the motor a currently required to be started is first determined according to the start sequence of the motors, and if the motor a is successfully started, the unstarted motor b is started; if the motor b is successfully started, the unstarted motor c is started; and so on, until all the motors in the drone are started, thereby accurately and effectively realizing the sequential start of multiple motors in the drone.

[0037] The method of the above embodiment determines the motor that needs to be started currently according to the starting sequence of the motors; and when the starting result is a successful start, the remaining unstarted motors are started in sequence according to the starting sequence of the motors until all the motors in the drone are started, thereby accurately and effectively realizing the sequential starting of multiple motors in the drone, and effectively avoiding the strong current shock caused by starting multiple motors of the drone at the same time.

[0038] In one embodiment, determining the starting result of the motor currently required to be started includes: Within a preset time period, if it is detected that the rotation speed of the motor currently required to be started is greater than a threshold and the current of the motor currently required to be started is within a preset range, it is determined that the motor currently required to be started has been started successfully.

[0039] Specifically, after receiving the start command, the drone enters the start state. Optionally, it can be determined whether the actual phase current of the motor is greater than 1-2 times the conventional current. If it is greater than 1-2 times the conventional current, it means that there is an impact current and the start is in progress. Optionally, by judging whether the absolute value of the motor feedback speed is greater than the start limit, for example, the absolute value of the motor feedback speed is greater than 50rpm, and the actual phase current is the conventional current, and the start time is within the specified time, it is determined that the motor has started successfully, thereby achieving accurate judgment of the current motor start state, and then it can be accurately determined whether to start the remaining unstarted motors in sequence, effectively reducing the total startup time of the drone and improving the startup efficiency of the drone.

[0040] The method of the above embodiment can accurately and efficiently judge the starting status of the current motor according to the motor speed and the motor current within a preset time, and then can accurately determine whether to start the remaining unstarted motors in sequence, thereby effectively reducing the total startup time of the drone and improving the startup efficiency of the drone.

[0041] In one embodiment, the current impact suppression method of the UAV electric drive system further includes: When it is determined that the starting result of the motor currently required to be started is a starting failure, the starting of the drone is stopped.

[0042] Specifically, in the embodiment of the present application, when the start result of the current motor is a successful start, the remaining unstarted motors are started in sequence according to the start order of the motors, thereby avoiding the strong current shock caused by starting multiple motors of the drone at the same time and improving the running stability of the motors. When it is determined that the start result of the motor currently required to be started is a start failure, the start of the drone is stopped, that is, the start of subsequent motors is stopped, and the motor failure that failed to start is analyzed and checked, thereby improving the performance and safety of the drone. Optionally, the start time of the motor can be set to 100mS. If the start is successful within 100mS, the motor is running normally, otherwise it is considered that the start of the drone motor has failed.

[0043] The method of the above embodiment, when determining that the start result of the motor currently required to be started is a start failure, stops starting the drone, and analyzes and troubleshoots the motor failure to start, thereby effectively improving the performance and safety of the drone.

[0044] In one embodiment, determining a startup sequence of multiple motors in a drone includes: According to preset rules, multiple motors are grouped to obtain motor grouping results; According to the grouping results of the motors, the starting sequence of each motor is determined.

[0045] Specifically, in the process of determining the startup sequence of multiple motors in the drone, the present application can group the multiple motors. Optionally, the startup sequence of multiple motors in the same group is the same, and the startup sequence of motors in different groups is different. Optionally, in the grouping result of the motors, each group includes one or more motors.

[0046] For example, when the drone includes 4 motors, it can be divided into 4 groups, that is, each group has only one motor, and the start-up order of group 1 is better than that of group 2; the start-up order of group 2 is better than that of group 3; the start-up order of group 3 is better than that of group 4. It can also be divided into 2 groups, that is, each group has 2 motors, and the start-up order of group 1 is better than that of group 2. Optionally, the grouping rules can be grouped based on the position of the motor, or based on the power or model of the motor, and there is no specific limitation in the embodiments of the present application. Optionally, when multiple motors are included in each group, multiple motors in each group can be started at the same time, or multiple motors in each group can be started one by one. Optionally, the start-up order of the motors in the present application can be determined based on the position of the motors in each group, or based on the model or power of the motors in each group, and there is no specific limitation in the implementation of the present application.

[0047] It should be noted that when only one motor is included in each group, the current impact suppression effect on the UAV electric drive system is more obvious, but the UAV startup time will be slightly longer. When multiple motors are included in each group, the current impact suppression effect on the UAV electric drive system is slightly weaker than when only one motor is included in each group, but the UAV startup time will be further shortened. Therefore, according to the grouping of multiple motors in the UAV, it is possible to effectively balance the current impact suppression effect of the UAV electric drive system and the startup time of the UAV, achieving the effect of taking into account both the current impact and the startup time.

[0048] The method of the above embodiment can effectively balance the current impact suppression effect of the UAV electric drive system and the startup time of the UAV by grouping multiple motors and determining the startup sequence of each motor, thereby achieving the effect of taking both current impact and startup time into account.

[0049] Exemplarily, an embodiment of the present application provides a starting controller for executing the current impact suppression method of the above-mentioned UAV electric drive system to achieve current impact suppression of the UAV electric drive system. Optionally, the starting controller in the present application is installed in the UAV electric drive system, and the starting controller includes a starting current-time-speed controller and a starting sequence rule controller, so as to start the motors in sequence according to the time sequence instead of starting all motors at the same time, thereby reducing the current impact on the UAV system. At the same time, since the impact current lasts for a short time, it will not have much impact on the total startup time, thereby effectively protecting the power supply unit, the electric drive system and the motor itself, and improving the operating stability of the motor.

[0050] For example, Figure 3 As shown, the starting current-time-speed controller in the starting controller executes the following steps: 1. Determine whether the motor receives a start command. If so, the controller enters the start state.

[0051] 2. After entering the startup state, the startup time controller runs immediately. For example, if the startup time is set to 100mS, if the startup is successful within 100mS, the motor runs normally, otherwise the startup failure is fed back. Optionally, when it is determined that the startup result of the motor currently required to be started is a startup failure, the startup of the drone is stopped, that is, the startup of subsequent motors is stopped, and the motor failure that failed to start is analyzed and checked, thereby improving the performance and safety of the drone.

[0052] 3. Determine whether the actual phase current is 1-2 times greater than the normal current. If it is 1-2 times greater than the normal current, it means that there is an impact current and starting is in progress.

[0053] 4. Determine whether the absolute value of the motor feedback speed is greater than the starting limit. For example, if the absolute value of the motor feedback speed is greater than 50rpm, and the actual phase current is the normal current, and the starting time is within the specified time, the feedback start is successful. That is, according to the motor speed and the motor current, the current motor starting state can be accurately and efficiently determined, so as to accurately determine whether to start the remaining unstarted motors in sequence, effectively reducing the total startup time of the drone and improving the startup efficiency of the drone.

[0054] For example, Figure 4 As shown, the startup sequence rule controller executes the following steps: 1. After the communication bus receives the start command from the drone system, it starts the first group of motors that should be started according to the start sequence rules set by the user. Optionally, multiple motors are grouped according to preset rules, and the start sequence of multiple motors in the same group is the same, and the start sequence of motors in different groups is different. Optionally, in the grouping result of the motors, each group includes one or more motors. Optionally, when only one motor is included in each group, the current impact suppression effect on the drone electric drive system is more obvious, but the drone startup time will be slightly longer. When multiple motors are included in each group, the current impact suppression effect on the drone electric drive system is slightly weaker than when only one motor is included in each group, but the drone startup time will be further shortened.

[0055] 2. As shown in the flow chart, after the first group of motors that should be started have their starting current-time-speed controller running feedback successfully started, a start success command is sent to the communication bus; if it fails, a start failure command is sent to the drone system to request to restart the system again.

[0056] 3. As shown in the flowchart, after the communication bus receives the successful start command of the first group of motors that should be started, the second group of motors that should be started are started. That is, when it is determined that the current motor is started successfully, the remaining unstarted motors can be started quickly, effectively and in sequence, thereby effectively reducing the total startup time of the drone and improving the startup efficiency of the drone.

[0057] 4. As shown in the flow chart, repeat steps 2 and 3 until all motors are started.

[0058] 5. The first group of motors, the second group, and all the groups of motors can be a single motor or a combination of multiple motors. That is, by grouping multiple motors and determining the start-up order of each motor, the current impact suppression effect of the UAV electric drive system and the start-up time of the UAV can be effectively balanced, achieving the effect of taking into account both the current impact and the start-up time.

[0059] The current surge suppression method of the UAV electric drive system of the above-mentioned embodiment starts each motor in sequence through timing adjustment, effectively protects the UAV system power supply unit, electric drive system and motor itself, and improves the operating stability of the UAV system.

[0060] The current surge suppression device for the electric drive system of the unmanned aerial vehicle provided by the present invention is described below. The current surge suppression device for the electric drive system of the unmanned aerial vehicle described below and the current surge suppression method for the electric drive system of the unmanned aerial vehicle described above can be referred to each other. Figure 5 As shown, including: A determination module 510 is used to determine the start sequence of multiple motors in the drone; The starting module 520 is used to start the multiple motors in the drone in sequence according to the starting sequence of the motors.

[0061] Optionally, the starting module 520 is specifically used to determine the motor that needs to be started currently according to the starting sequence of the motors, and determine the starting result of the motor that needs to be started currently; When the starting result is successful, the remaining motors that have not been started are started in sequence according to the starting sequence of the motors.

[0062] Optionally, the starting module 520 is specifically used to determine that the motor currently required to be started has been started successfully if it is detected that the speed of the motor currently required to be started is greater than a threshold and the current of the motor currently required to be started is within a preset interval within a preset time period.

[0063] Optionally, the starting module 520 is further configured to stop starting the drone when it is determined that the starting result of the motor currently required to be started is a start failure.

[0064] Optionally, the determination module 510 is specifically used to group the multiple motors according to a preset rule to obtain a motor grouping result; According to the grouping result of the motors, a starting sequence of the motors is determined.

[0065] Optionally, in the grouping result of the motors, each group includes one or more motors.

[0066] Optionally, in the case where the grouped groups include multiple motors, the starting order of the multiple motors in the same group is the same, and the starting order of the motors in different groups is different.

[0067] Figure 6 An example of a physical structure diagram of an electronic device is provided, and the electronic device may include: a processor 610, a communication interface 620, a memory 630, and a communication bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other through the communication bus 640. The processor 610 may call the logic instructions in the memory 630 to execute a current impact suppression method for an electric drive system of a drone, and the method includes: determining a start-up sequence of multiple motors in the drone; and sequentially starting the multiple motors in the drone according to the start-up sequence of the motors.

[0068] In addition, the logic instructions in the above-mentioned memory 630 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0069] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the current shock suppression method of the unmanned aerial vehicle electric drive system provided by the above-mentioned methods. The method includes: determining the starting order of multiple motors in the unmanned aerial vehicle; starting the multiple motors in the unmanned aerial vehicle in sequence according to the starting order of the motors.

[0070] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the current shock suppression method of the electric drive system of the unmanned aerial vehicle provided by the above-mentioned methods. The method includes: determining the starting sequence of multiple motors in the unmanned aerial vehicle; and starting the multiple motors in the unmanned aerial vehicle in sequence according to the starting sequence of the motors.

[0071] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0072] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for suppressing current surges in an electric drive system of an unmanned aerial vehicle, characterized in that: include: Determine the activation order of multiple motors in a drone; According to the starting sequence of the motors, multiple motors in the drone are started in sequence.

2. The current impact suppression method of the UAV electric drive system according to claim 1 is characterized in that: The method of sequentially starting the plurality of motors in the drone according to the starting sequence of the motors includes: According to the starting sequence of the motors, determining the motor that needs to be started currently, and determining the starting result of the motor that needs to be started currently; When the starting result is successful, the remaining motors that have not been started are started in sequence according to the starting sequence of the motors.

3. The current impact suppression method of the UAV electric drive system according to claim 2 is characterized in that: The step of determining the starting result of the motor currently required to be started includes: Within a preset time period, if it is detected that the rotation speed of the motor currently required to be started is greater than a threshold and the current of the motor currently required to be started is within a preset interval, it is determined that the motor currently required to be started has been started successfully.

4. The current impact suppression method of the UAV electric drive system according to claim 2 is characterized in that: Also includes: When it is determined that the starting result of the motor currently required to be started is a starting failure, the starting of the drone is stopped.

5. The current impact suppression method of the UAV electric drive system according to any one of claims 1 to 4, characterized in that: The step of determining the startup sequence of the plurality of motors in the drone comprises: According to a preset rule, the plurality of motors are grouped to obtain a grouping result of the motors; According to the grouping result of the motors, a starting sequence of the motors is determined.

6. The current impact suppression method of the UAV electric drive system according to claim 5 is characterized in that: In the grouping result of the motors, each group includes one or more motors.

7. The current impact suppression method of the UAV electric drive system according to claim 6 is characterized in that: In the case where the grouped groups include a plurality of motors, the starting order of the plurality of motors in the same group is the same, and the starting order of the motors in different groups is different.

8. A current surge suppression device for an electric drive system of an unmanned aerial vehicle, characterized in that: include: A determination module, used to determine the start sequence of multiple motors in the drone; The starting module is used to start the multiple motors in the drone in sequence according to the starting sequence of the motors.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the current impact suppression method of the UAV electric drive system is implemented as described in any one of claims 1 to 7.

10. A drone, characterized in that: It includes the current surge suppression device of the UAV electric drive system as described in claim 8 or the electronic device as described in claim 9.

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