Steering engine motion control device and steering engine

Abstract

The utility model discloses a steering engine motion control device and a steering engine, and relates to the field of device driving, and the steering engine motion control device comprises a USB power supply part and an RS232 power supply part which are used for outputting a power supply; the power supply switching circuit is respectively connected with the USB power supply part, the RS232 power supply part and the steering engine part, and is used for communicating a power supply circuit between the steering engine part and the USB power supply part or the RS232 power supply part so as to provide a power supply for the steering engine part; and the communication control part is connected with the steering engine part and is used for sending a motion control signal to the steering engine part. A power supply circuit between the steering engine component and the USB power supply component and a power supply circuit between the steering engine component and the RS232 power supply component can be mutually standby for replacement, and the steering engine motion control device provides a more stable power supply for the steering engine component, so that more stable motion control of the steering engine is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to device drive field, especially in steering gear motion control device and steering gear. BACKGROUND

[0002] Steering gears are widely used in various devices, however, the existing steering gear application device environment is often extremely complex, especially in the motor and mechanical pump intensive device occasion, the continuous and strong vibration is everywhere, these vibrations not only have various frequencies, but also have large intensity.

[0003] For the steering gear, such vibration environment brings many hidden troubles, among which, the most obvious is the stability problem of the steering gear interface and the power supply interface, because of being in the vibration environment for a long time, the connecting parts of the interface are prone to looseness, once the interface is loose, the power supply cannot be kept stable, sometimes voltage fluctuation occurs, and sometimes power is temporarily cut off.

[0004] Such unstable power supply causes serious adverse consequences to the normal operation of the steering gear, on the one hand, the control accuracy of the steering gear will be greatly reduced, the original accurate action becomes slow and has large deviation, which leads to the reduction of the operation efficiency of the device, on the other hand, the unstable power supply can also cause irreversible damage to the electronic components inside the steering gear, shorten the service life of the steering gear, increase the maintenance cost and downtime of the device, and bring great inconvenience to production and operation.

[0005] From the above, it can be seen that how to provide stable power supply for the steering gear components is a problem to be solved in the art. UTILITY MODEL CONTENTS

[0006] Therefore, the purpose of the utility model is to provide a steering gear motion control device and a steering gear to provide stable power supply for the steering gear components. The specific scheme is as follows:

[0007] In a first aspect, the application discloses a steering gear motion control device, comprising:

[0008] USB power supply components and RS232 power supply components for outputting power supply;

[0009] A power supply switching circuit connected with the USB power supply components, the RS232 power supply components and the steering gear components respectively, for connecting the power supply circuit between the steering gear components and the USB power supply components or the RS232 power supply components, to provide power supply for the steering gear components;

[0010] A communication control component connected with the steering gear components, for sending motion control signals to the steering gear components.

[0011] Optionally, the steering gear motion control device further comprises:

[0012] A current compensator, an input end of the current compensator being connected with the power switching circuit, an output end of the current compensator being connected with the rudder mechanism component, the current compensator being used for current compensation for the power supply circuit when the rudder mechanism component starts.

[0013] Optionally, the rudder movement control device further comprises:

[0014] A communication component, an input end of the communication component being connected with the upper computer, an output end of the communication component being connected with the communication control component, the communication component being used for forwarding the rudder control instruction issued by the upper computer to the communication control component, so that the communication control component outputs the movement control signal corresponding to the rudder control instruction.

[0015] Optionally, the communication component comprises a USB communication assembly and an RS232 communication assembly, and the communication control component comprises a receiving processor.

[0016] The receiving processor is used for continuously sending a preset number of communication detection signals to the USB communication assembly or the RS232 communication assembly, receiving a communication feedback signal returned by the USB communication assembly or the RS232 communication assembly, and outputting a communication assembly selection instruction corresponding to the communication feedback signal to the communication component.

[0017] The communication component forwards the rudder control instruction to the communication control component through the USB communication assembly or the RS232 communication assembly in response to the communication assembly selection instruction.

[0018] Optionally, the USB power supply component comprises:

[0019] A MOS tube, an input end of the MOS tube being connected with the USB power supply interface, the MOS tube being used for transmitting the power output by the USB power supply interface to the first rectifier diode when a passage between the MOS tube and the USB power supply interface is in an open state.

[0020] The first rectifier diode, an input end of the first rectifier diode being connected with the MOS tube, an output end of the first rectifier diode being connected with the power switching circuit, the first rectifier diode being used for transmitting the power transmitted by the MOS tube to the power switching circuit.

[0021] Optionally, the USB power supply component comprises:

[0022] A soft start device, the soft start device being connected with the USB power supply interface and the MOS tube respectively, the soft start device being used for controlling the passage between the MOS tube and the USB power supply interface.

[0023] Optionally, the power switching circuit comprises:

[0024] a voltage dividing resistor for dividing voltage of a power supply circuit between the RS232 power supply component and the steering engine component;

[0025] a voltage comparator connected with the voltage dividing resistor, for sending a level signal corresponding to a comparison result between a preset voltage value and a voltage value divided by the voltage dividing resistor to a triode;

[0026] the triode, an input end of the triode being connected with the voltage comparator, an output end of the triode being connected with the MOS tube, the triode being used for controlling communication or disconnection between the MOS tube and the USB power supply interface based on the level signal.

[0027] Optionally, the RS232 power supply component comprises:

[0028] a voltage conversion component connected with the RS232 power supply interface;

[0029] a second rectifier diode connected with the voltage conversion component and the power switching circuit respectively;

[0030] a current limiting resistor connected with the voltage conversion component and the second rectifier diode respectively.

[0031] Optionally, the RS232 power supply component comprises:

[0032] a filter network connected with the current limiting resistor, for filtering out noise and interference signals of a power supply circuit between the RS232 power supply component and the steering engine component.

[0033] In a second aspect, the application discloses a steering engine, comprising the steering engine motion control device as disclosed above.

[0034] The application has the advantages that the rudder motion control device comprises a USB power supply component and an RS232 power supply component for outputting power; a power supply switching circuit connected with the USB power supply component, the RS232 power supply component and the rudder component respectively, for connecting the power supply circuit between the rudder component and the USB power supply component or the RS232 power supply component, so as to provide power supply for the rudder component; and a communication control component connected with the rudder component, for sending a motion control signal to the rudder component. As can be seen, the rudder motion control device comprises the USB power supply component, the RS232 power supply component, the power supply switching circuit and the communication control component, wherein the power supply switching circuit is connected with the USB power supply component, the RS232 power supply component and the rudder component respectively, and the communication control component is connected with the rudder component, further, the USB power supply component and the RS232 power supply component are both used for outputting power, and the power supply switching circuit is used for connecting the power supply circuit between the rudder component and the USB power supply component or the RS232 power supply component, that is, the power supply switching circuit is used for connecting the power supply circuit between the rudder component and the USB power supply component or the power supply circuit between the rudder component and the RS232 power supply component, so that the power supply circuit between the rudder component and the USB power supply component and the power supply circuit between the rudder component and the RS232 power supply component can be used as backup to replace each other, even if one of the power supply circuits has a problem, the other power supply circuit can also be connected, so as to provide power supply for the rudder component, and when the communication control component sends the motion control signal to the rudder component, the motion control of the rudder component can be realized, that is, the rudder motion control device provides more stable power supply for the rudder component, and further realizes more stable motion control of the rudder. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0036] Figure 1 A rudder motion control device disclosed by the present application is shown in the figure;

[0037] Figure 2 A signal communication diagram disclosed by the present application is shown in the figure;

[0038] Figure 3 A specific signal communication diagram disclosed by the present application is shown in the figure;

[0039] Figure 4 A specific rudder motion control device circuit diagram disclosed by the present application is shown in the figure. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0041] The steering engine is widely used in various devices. However, the existing steering engine application device environment is often extremely complex, especially in the device occasion with dense motors and mechanical pumps. The continuous and strong vibration is always present. These vibrations not only have various frequencies, but also have large intensity.

[0042] For the steering engine, such a vibration environment brings many hidden troubles. The most obvious one is the stability problem of the steering engine interface and the power supply interface. Due to long time in the vibration environment, the connection components of the interface are prone to looseness. Once the interface is loose, the power supply cannot be kept stable, and voltage fluctuation and temporary power failure occur from time to time.

[0043] Such unstable power supply causes serious adverse consequences to the normal operation of the steering engine. On the one hand, the control accuracy of the steering engine will be greatly reduced. The originally accurate motion becomes slow and has large deviation, resulting in reduced operation efficiency of the device. On the other hand, the unstable power supply can also cause irreversible damage to the electronic components inside the steering engine, shorten the service life of the steering engine, increase the maintenance cost and downtime of the device, and bring great inconvenience to production and operation.

[0044] Therefore, the embodiments of the present application disclose a steering engine motion control device to provide stable power supply for the steering engine components.

[0045] Referring to Figure 1 The embodiments of the present application provide a steering engine motion control device, which comprises:

[0046] The USB power supply component 111 and the RS232 power supply component 112 for outputting power supply.

[0047] The power supply switching circuit 12 connected with the USB power supply component 111, the RS232 power supply component 112 and the steering engine component 2 respectively, for connecting the power supply circuit between the steering engine component 2 and the USB power supply component 111 or the RS232 power supply component 112, to provide power supply for the steering engine component 2.

[0048] The communication control component 13 connected with the steering engine component 2, for sending the motion control signal to the steering engine component 2.

[0049] In the embodiment, the rudder motion control device comprises a USB power supply component 111, an RS232 power supply component 112, a power switching circuit 12 and a communication control component 13. The power switching circuit 12 is connected with the USB power supply component 111, the RS232 power supply component 112 and the rudder component respectively. The communication control component 13 is connected with the rudder component.

[0050] The USB power supply component 111 and the RS232 power supply component 112 can both output power. When the power switching circuit 12 connects the power supply circuit between the rudder component and the USB power supply component 111, the USB power supply component 111 can provide power for the rudder component. When the power switching circuit 12 connects the power supply circuit between the rudder component and the RS232 power supply component 112, the RS232 power supply component 112 can provide power for the rudder component. Further, the power switching circuit 12 can preferentially connect the power supply circuit between the rudder component and the RS232 power supply component 112. However, when the power switching circuit 12 detects that the power supply system of the RS232 power supply component 112 is faulty or insufficient, the power switching circuit 12 connects the power supply circuit between the rudder component and the USB power supply component 111, so as to ensure that the rudder component can work under normal voltage and make the rudder component move more accurately according to the motion control signal. It can be understood that when the power switching circuit 12 detects that the power supply system of the RS232 power supply component 112 is restored, the power supply circuit between the rudder component and the RS232 power supply component 112 can be connected again.

[0051] The communication control component 13 is used for sending the motion control signal to the rudder component. On the basis that the USB power supply component 111 or the RS232 power supply component 112 provides stable power for the rudder component, the communication control component 13 sends the motion control signal to the rudder component, so that the rudder component can move more accurately according to the motion control signal, and the precise motion control of the rudder component is realized.

[0052] In the embodiment, the rudder motion control device further comprises a current compensator. The input end of the current compensator is connected with the power switching circuit, and the output end of the current compensator is connected with the rudder component. The current compensator is used for compensating the current of the power supply circuit when the rudder component starts.

[0053] When the power supply voltage is supplied to the steering engine component, the steering engine component starts to move upon receiving the motion control signal sent by the communication control component 13. Since the steering engine component is an inductive device, a large current is generated at the moment of movement, which instantaneously pulls down the power supply voltage, thus causing insufficient power supply to other components, for example, causing the communication control component 13 to reset. Therefore, a current compensator is added at the front end of the steering engine component, which stores some electric charges to compensate for the instantaneous current deficiency caused by the instantaneous movement of the steering engine component. It can be understood that the input end of the current compensator is connected with the power supply switching circuit, and the output end of the current compensator is connected with the steering engine component. Therefore, no matter whether the power supply switching circuit 12 connects the power supply circuit between the steering engine component and the USB power supply component 111 or connects the power supply circuit between the steering engine component and the RS232 power supply component 112, the current compensator can compensate the power supply circuit when the steering engine component starts.

[0054] In the embodiment, the steering engine motion control device further comprises a communication component, the input end of the communication component is connected with the host computer, the output end of the communication component is connected with the communication control component, and the communication component is used to forward the steering engine control instruction sent by the host computer to the communication control component, so that the communication control component outputs the running control signal corresponding to the steering engine control instruction.

[0055] For example Figure 2 As shown in a signal communication schematic diagram, the input end of the steering engine motion control device 1 is connected with the host computer 3, and the output end is connected with the steering engine component 2. Further, for example Figure 3 As shown in a specific signal communication schematic diagram, the steering engine motion control device 1 further comprises a communication component 14, the input end of the communication component 14 is connected with the host computer 3, the output end of the communication component is connected with the communication control component 13, and the communication control component 13 is connected with the steering engine component 2. The communication component is used to forward the steering engine control instruction sent by the host computer to the communication control component, so that the communication control component outputs the running control signal corresponding to the steering engine control instruction to the steering engine component. In this way, the communication transmission from the host computer to the steering engine component is realized.

[0056] The communication component includes a USB communication assembly and an RS232 communication assembly, and the communication control component includes a receiving processor.

[0057] The communication component includes a USB communication assembly and an RS232 communication assembly, wherein the USB communication assembly can be controlled by a plurality of interfaces in a string, and thus has a high communication speed but weak anti-interference capability, and the RS232 communication assembly is controlled in a one-to-one manner, and thus has strong anti-interference capability but low communication speed.

[0058] The communication control component includes a receiving processor, which is configured to continuously send a preset number of communication detection signals to the USB communication assembly or the RS232 communication assembly, receive communication feedback signals returned by the USB communication assembly or the RS232 communication assembly, and output a communication component selection instruction corresponding to the communication feedback signals to the communication component. In other words, the receiving processor is configured to monitor whether the USB communication assembly and the RS232 communication assembly have communication abnormalities. Specifically, the receiving processor continuously sends three USB data protocols (i.e., communication detection signals) and receives three communication feedback signals. If the three communication feedback signals are all incorrect after being verified by the receiving processor, it is determined that the USB communication assembly has a communication abnormality. Therefore, the output communication component selection instruction indicates that the RS232 communication assembly is responsible for the communication task. The communication component responds to the communication component selection instruction to forward the rudder control instruction to the communication control component through the RS232 communication assembly. When a long-time instrument vibration occurs, the interface of the Type-C USB communication assembly may be loose. After loosening, the receiving processor cannot read the communication feedback signal of the USB communication assembly. The output communication component selection instruction indicates that the RS232 communication assembly is responsible for the communication task. In this way, the risk of communication failure due to loosening of the interface of the Type-C USB communication assembly can be prevented. It can be seen that the double communication mode of the USB communication assembly and the RS232 communication assembly is used to realize anti-interference, so as to ensure normal precision operation of the rudder.

[0059] The USB power supply component includes a MOS tube, a first rectifier diode, and a power switching circuit.

[0060] The USB power supply component includes a MOS tube, a first rectifier diode, and a power switching circuit.

[0061] The USB power supply component includes a soft start device.

[0062] The USB power supply component further includes a soft start device.

[0063] The power switching circuit includes a voltage divider resistor, a voltage comparator, and a triode.

[0064] The power switching circuit comprises a voltage dividing resistor, a voltage comparator and a triode, wherein the voltage comparator is connected with the voltage dividing resistor, and the input end and the output end of the triode are connected with the voltage comparator and the MOS tube respectively.

[0065] In the embodiment, the RS232 power supply component comprises a voltage conversion component connected with the RS232 power supply interface, a second rectifier diode connected with the voltage conversion component and the power switching circuit respectively, and a current limiting resistor connected with the voltage conversion component and the second rectifier diode respectively.

[0066] The RS232 power supply component specifically comprises a voltage conversion component, a second rectifier diode and a current limiting resistor, wherein the voltage conversion component is connected with the RS232 power supply interface, the second rectifier diode is connected with the voltage conversion component and the power switching circuit respectively, and the current limiting resistor is connected with the voltage conversion component and the second rectifier diode respectively.

[0067] In the embodiment, the RS232 power supply component comprises a filter network connected with the current limiting resistor, which is used to filter out the noise and interference signals of the power supply circuit between the RS232 power supply component and the steering engine component.

[0068] Further, the RS232 power supply component can further comprise a filter network, wherein the filter network specifically comprises one resistor and two capacitors, the filter network is connected with the current limiting resistor, and the filter network can filter out the noise and interference signals of the power supply circuit between the RS232 power supply component and the steering engine component.

[0069] The application has the advantages that: the rudder motion control device comprises USB power supply components and RS232 power supply components for outputting power; a power switching circuit connected with the USB power supply components, the RS232 power supply components and the rudder components respectively, for connecting the power supply circuit between the rudder components and the USB power supply components or the RS232 power supply components, to provide power supply for the rudder components; and a communication control component connected with the rudder components, for sending motion control signals to the rudder components. It can be seen that the rudder motion control device comprises USB power supply components, RS232 power supply components, a power switching circuit and a communication control component, wherein the power switching circuit is connected with the USB power supply components, the RS232 power supply components and the rudder components respectively, and the communication control component is connected with the rudder components. Further, the USB power supply components and the RS232 power supply components are used for outputting power, and the power switching circuit is used for connecting the power supply circuit between the rudder components and the USB power supply components or the RS232 power supply components, that is, the power switching circuit is used for connecting the power supply circuit between the rudder components and the USB power supply components or the RS232 power supply components. In this way, the power supply circuit between the rudder components and the USB power supply components and the power supply circuit between the rudder components and the RS232 power supply components can be used as backup for each other. Even if one of the power supply circuits has a problem, the other power supply circuit can be connected to provide power supply for the rudder components. When the communication control component sends motion control signals to the rudder components, the motion control of the rudder components can be realized. That is, the rudder motion control device provides more stable power supply for the rudder components, and further realizes more stable motion control of the rudder.

[0070] The specific circuit diagram of the rudder motion control device is taken as an example to illustrate the application. Figure 4 The rudder motion control device mainly comprises a power supply part and a communication part, and specifically comprises:

[0071] 1) The power supply part comprises power supply components, a power switching circuit and a current compensator, wherein the power supply components comprise USB power supply components and RS232 power supply components.

[0072] 1.1) The USB power supply components comprise a MOS (metal oxide semiconductor field effect transistor) tube Q1, a first rectifier diode D1 and a soft start device J3.

[0073] 1.2) RS232 power supply components include voltage conversion components J4, the second rectifier diode D2 and current limiting resistor R1, and the voltage conversion components J4 are used for isolation to prevent noise and interference transmission, convert one direct current voltage into another direct current voltage, ensure that the output voltage remains stable when the load changes or the input voltage fluctuates, so the voltage conversion components J4 are specifically an isolation voltage conversion stabilizing component;

[0074] 1.3) The current compensator J7 is used for current compensation of the power supply circuit when the steering engine component J6 starts;

[0075] 1.4) The power supply switching circuit includes voltage dividing resistors R2 and R3, a voltage comparator U1 and a triode Q2, if the RS232 power supply component encounters system failure or power shortage, the voltage dividing value between the precision resistors R2 and R3 will decrease, the voltage dividing value enters the low level of the voltage comparator output to make the MOS tube Q1 gate of the USB power supply component pull low, so that the MOS tube Q1 is turned on, and the USB power supply component supplies power to the steering engine module, ensuring that the steering engine works under normal voltage.

[0076] 2) The communication part includes communication components and communication control components J5, the communication components include USB communication components J1 and RS232 communication components J2, and the communication control components J5 include a receiving processor.

[0077] 2.1) The USB communication components J1 and the RS232 communication components J2 forward the steering engine control instructions issued by the upper computer to the communication control components;

[0078] 2.2) The receiving processor in the communication control components J5 monitors whether the USB communication components J1 and the RS232 communication components J2 have communication abnormalities, selects the communication components with normal communication, and forwards the steering engine control instructions to the communication control components through the communication components. The communication control components J5 can be a single-chip microcomputer, that is, when a certain communication component is disturbed or a certain communication component is loosened due to external vibration, the receiving processor in the single-chip microcomputer system sends a signal 3 times and does not receive a return signal or receives an error protocol signal due to interference, and the internal program automatically jumps to another communication interface end for communication again. The single-chip microcomputer can also emit a PWM (Pulse width modulation, pulse width modulation) wave signal, that is, the single-chip microcomputer outputs a PWM wave signal corresponding to the steering engine control instruction, so as to control the corresponding movement of the steering engine module.

[0079] The application also provides a steering engine, which includes a steering engine body and the steering engine movement control device.

[0080] The steering engine provided by the application is introduced in the above embodiment, and will not be described here.

[0081] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0082] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0083] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rudder movement control device characterized by comprising: The application relates to a power supply device for a steering engine, which comprises the following parts: a USB power supply part and an RS232 power supply part for outputting power supply; a power supply switching circuit connected with the USB power supply part, the RS232 power supply part and a steering engine part respectively, which is used for connecting the power supply circuit between the steering engine part and the USB power supply part or the RS232 power supply part to provide power supply for the steering engine part; a communication control part connected with the steering engine part, which is used for sending a motion control signal to the steering engine part.

2. The steering motor motion control apparatus according to claim 1, characterized by, The application further comprises: a current compensator, the input end of which is connected with the power supply switching circuit, the output end of which is connected with the steering engine part, and which is used for current compensation for the power supply circuit when the steering engine part starts.

3. The steering motor motion control apparatus according to claim 1, characterized by The application further comprises: a communication part, the input end of which is connected with a host computer, and the output end of which is connected with the communication control part, which is used for forwarding a steering engine control instruction issued by the host computer to the communication control part so that the communication control part outputs a motion control signal corresponding to the steering engine control instruction.

4. The steering motor motion control apparatus according to claim 3, characterized by The communication part comprises a USB communication assembly and an RS232 communication assembly, and the communication control part comprises a receiving processor; the receiving processor is used for continuously sending a preset number of communication detection signals to the USB communication assembly or the RS232 communication assembly, receiving a communication feedback signal returned by the USB communication assembly or the RS232 communication assembly, and outputting a communication assembly selection instruction corresponding to the communication feedback signal to the communication part; wherein the communication part responds to the communication assembly selection instruction to forward the steering engine control instruction to the communication control part through the USB communication assembly or the RS232 communication assembly.

5. The steering motor motion control apparatus according to claim 1, wherein The USB power supply part comprises: a MOS tube, the input end of which is connected with a USB power supply interface, which is used for transmitting the power supply output by the USB power supply interface to a first rectifier diode when the passage between the MOS tube and the USB power supply interface is in an open state; the first rectifier diode, the input end of which is connected with the MOS tube, and the output end of which is connected with a power supply switching circuit, which is used for transmitting the power supply transmitted by the MOS tube to the power supply switching circuit.

6. The steering motor motion control apparatus according to claim 5, wherein The USB power supply part comprises: a soft start device, which is connected with the USB power supply interface and the MOS tube respectively, and which is used for controlling the passage between the MOS tube and the USB power supply interface.

7. The steering motor motion control apparatus according to claim 6, wherein The power supply switching circuit comprises: a voltage dividing resistor, which is used for voltage dividing the power supply circuit between the RS232 power supply part and the steering engine part; a voltage comparator connected with the voltage dividing resistor, which is used for sending a level signal corresponding to the comparison result of a preset voltage value and the voltage dividing value of the voltage dividing resistor to a triode; The triode, an input end of the triode is connected with the voltage comparator, an output end of the triode is connected with the MOS tube, and the triode is used for controlling the connection or disconnection between the MOS tube and the USB power supply interface based on the level signal.

8. The steering motor motion control apparatus according to any one of claims 1 to 7, characterized by The RS232 power supply component comprises: A voltage conversion component connected with the RS232 power supply interface; A second rectifier diode connected with the voltage conversion component and the power supply switching circuit respectively; A current limiting resistor connected with the voltage conversion component and the second rectifier diode respectively.

9. The steering motor motion control apparatus according to claim 8, wherein The RS232 power supply component comprises: A filter network connected with the current limiting resistor, used for filtering out the noise and interference signals of the power supply circuit between the RS232 power supply component and the steering engine component.

10. A steering gear, characterized in that The steering engine movement control device comprises a steering engine body and a steering engine movement control device according to any one of claims 1 to 9.

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