Slip ring contact controllable system suitable for matrix motor and control method

Abstract

The invention discloses a slip ring contact controllable system suitable for a matrix motor and a control method, and belongs to the technical field of motors. According to the system structure, a static unit comprises a main controller, a stator armature winding, a sliding contact module and an actuating unit; the rotating unit comprises a slip ring rotating module and a rotor armature winding. Physical contact and electrical connection between the static unit and the rotating unit are realized through a sliding contact module. The slip ring rotating module is connected with a rotor armature winding, rotates along with the rotor and comprises an electric brush and a slip ring; the actuating unit is used for controlling the contact between the electric brush and the slip ring in the sliding contact module through actuating action; the stator armature winding is matched with the rotor armature winding; the system can realize the power-off of the rotor winding and the separation of the slip ring and the electric brush, thereby protecting the service life of the slip ring and the motor. The contact state of the slip ring is controllable, so that the service life and reliability of the slip ring and the motor are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a slip ring contact controllable system and a control method suitable for a matrix motor. Background Art

[0002] As the electrification of various types of equipment becomes more and more profound, motors are being used more and more, especially in some special applications. In recent years, some new matrix motors with armature windings arranged on both the stator and the rotor (such as a stator-rotor dual armature winding multiple electromagnetic torque single air gap reluctance motor structure with Chinese patent publication number CN211405627U, a stator-rotor dual permanent magnet dual armature winding magnetic field modulation permanent magnet motor structure with Chinese patent publication number CN211958893U, etc.) have been proposed. This type of matrix motor has the advantage of high torque density and can have multiple working modes, so the rotor winding frequently changes its working state to adapt to changes in working conditions. However, the rotor winding needs to be powered, which reduces the efficiency and reliability of the motor. Therefore, although this type of motor can be powered by the stator winding alone, as long as the motor is working, the slip ring will be in working state, which will continue to consume the working life of the slip ring and reduce the reliability and working life of the motor. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and propose a slip ring contact controllable system and control method suitable for a matrix motor, so as to realize the controllable working state of the slip ring, thereby improving the working life and reliability of the slip ring and the motor.

[0004] In a first aspect, the present invention proposes a slip ring contact controllable system suitable for a matrix motor. The present invention adopts the following system structure, including: The stationary unit comprises: a main controller, a stator armature winding, a sliding contact module and an actuating unit; The rotating unit comprises: a slip ring rotating module and a rotor armature winding, and the stationary unit and the rotating unit rely on a sliding contact module to achieve physical contact and electrical connection; the slip ring rotating module is connected to the rotor armature winding and rotates with the rotor, and includes a brush and a slip ring; The actuating unit is used to control the contact between the brush and the slip ring in the sliding contact module through an actuating action; the stator armature winding is arranged in coordination with the rotor armature winding; The main controller is used to analyze the working state of the motor, process fault signals, determine whether the sub-armature winding and the rotor armature winding need to work, and send control instructions to the lower-level modules.

[0005] As a further improvement of the present invention, the stationary unit further comprises: a stator armature winding power supply module, a rotor armature winding power supply module, and an actuating unit power supply module; The stator armature winding power supply module, the rotor armature winding power supply module and the actuating unit power supply module respectively supply power to the stator armature winding, the rotor armature winding and the actuating unit.

[0006] As a further improvement of the present invention, the main controller includes multiple controllers, and the multiple controllers independently control the stator armature winding power supply module, the rotor armature winding power supply module and the actuating unit power supply module respectively.

[0007] As a further improvement of the present invention, the stationary unit further comprises: a fault diagnosis module; The fault diagnosis module is used to monitor and diagnose the fault conditions of each module in the system and generate a diagnosis signal.

[0008] As a further improvement of the present invention, the sliding contact module includes a conductive brush and a metal guide rail; the conductive brush is connected to the actuating unit, and the metal guide rail is connected to the slip ring rotating module; the metal guide rail and the conductive brush are in two states: contact and disconnection. In the contact state, the conductive brush wire is in physical contact and electrical connection with the metal rail; in the disconnected state, the conductive brush wire is disconnected from the metal rail. The actuating unit is used to control the position of the conductive brush wire, and further control the contact state between the conductive brush wire and the guide rail.

[0009] As a further improvement of the present invention, the actuating unit includes a reset spring. When the actuating unit is working, the conductive brush wire is in physical contact with the guide rail; when the actuating unit is not working, the reset spring is working, and the conductive brush wire is disconnected from the guide rail.

[0010] As a further improvement of the present invention, the actuating unit includes a reset spring. When the actuating unit works, the conductive brush wire is physically disconnected from the guide rail; when the actuating unit does not work and the reset spring works, the conductive brush wire is physically contacted with the guide rail.

[0011] In a second aspect, the present invention proposes a control method for a slip ring contact controllable system applicable to a matrix motor, the method mainly comprising the following steps: The main controller analyzes the working status of the motor, processes fault signals, and determines whether the sub-armature winding and the rotor armature winding need to work, and sends control instructions to the lower-level modules; and determines whether the rotor winding needs to work according to the application working conditions; Determine whether the armature winding power supply module, the rotor armature winding power supply module and the actuator unit power supply module can work normally according to the fault diagnosis module.

[0012] Obtain fault diagnosis signals of the rotor armature winding power supply module, the actuator unit power supply module, the actuator unit, the slip ring and the armature winding to determine whether the rotor winding can work.

[0013] As a further improvement of the present invention, it also includes: According to the PWM signal of the main controller, the rotor armature winding power supply module provides the required current to the slip ring and the rotor armature winding.

[0014] As a further improvement of the present invention, it also includes: According to the control signal of the main controller, the actuator unit power supply module sends control instructions to the actuator unit to realize the working state switching of the sliding contact module: According to the actuation control signal, the sliding contact module has two working states: in the working state, the stationary part of the sliding module is in friction contact with the rotating part, and the slip ring works normally; in the non-working state, the stationary part of the sliding module is disconnected from the rotating part, and the slip ring does not work.

[0015] Compared with the existing technology, it has the following advantages: The present invention proposes a controllable slip ring contact system suitable for a matrix motor, which realizes controllable working state of the slip ring, thereby improving the service life and reliability of the slip ring and the motor. When the motor needs the rotor winding to work, the main controller controls the rotor armature winding to supply power, and controls the actuating unit to make the sliding contact module contact, so as to realize the power supply of the rotor winding. When the motor does not need the rotor winding to work, the main controller controls the actuating unit to disconnect the sliding contact module, so as to realize the power off of the rotor winding, and realize the separation of the slip ring from the brush, so as to protect the service life of the slip ring and the motor. When the fault diagnosis module detects that the rotor armature winding power supply module cannot supply power normally, or other winding faults occur, the main controller controls the actuating unit to disconnect the sliding contact module, so as to protect the service life of the slip ring. Therefore, the present invention greatly improves the service life problem of the slip ring of the existing matrix motor and improves the reliability of the motor system. The present invention will have considerable application prospects in fields including but not limited to aerospace, polar exploration, ocean navigation, etc., which require the motor system to have high reliability and fault tolerance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings: Figure 1 A schematic diagram of the system structure of some embodiments of the present invention; Figure 2 Schematic diagram of control methods according to some embodiments of the present invention. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 should fall within the scope of protection of the present invention.

[0018] It should be noted that the “module”, “unit”, etc. in the present invention are elements or systems for realizing their functions. The names thereof in the present invention are only used to describe the functions, and they may have different and specific implementation methods.

[0019] When a module is said to be "configured", "connected", or "controlled" by another module, it may be directly connected to another module or may exist in an integrated module at the same time.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] The "matrix motor" described in the present invention is a new type of motor with armature windings arranged on both the stator and the rotor. This type of motor works based on the principle of magnetic field modulation and can generate multiple torque components (such as a stator-rotor dual armature winding multiple electromagnetic torque single air gap reluctance motor structure of China Patent Publication No. CN211405627U, a stator-rotor dual permanent magnet dual armature winding magnetic field modulation permanent magnet motor structure of China Patent Publication No. CN211958893U, a doubly fed electric excitation synchronous motor of China Patent Publication No. CN110071614B, etc.). When the stator winding works alone, the motor can output torque. When the rotor winding works alone, the motor can also output torque. When the stator winding and the rotor winding are in the working room at the same time, the motor can output a larger torque. The matrix motor has multiple working modes, so the rotor winding frequently changes the working state to adapt to changes in working conditions.

[0022] The first object of the present invention is to provide a slip ring contact controllable system suitable for a matrix motor, comprising: a stationary unit and a rotating unit; The stationary unit comprises: a main controller, a stator armature winding, a sliding contact module and an actuating unit; The rotating unit comprises: a slip ring rotating module and a rotor armature winding, and the stationary unit and the rotating unit rely on a sliding contact module to achieve physical contact and electrical connection; the slip ring rotating module is connected to the rotor armature winding and rotates with the rotor, and includes a brush and a slip ring; The actuating unit is used to control the contact between the brush and the slip ring in the sliding contact module through an actuating action; the stator armature winding is arranged in coordination with the rotor armature winding; The main controller is used to analyze the working state of the motor, process fault signals, determine whether the sub-armature winding and the rotor armature winding need to work, and send control instructions to the lower-level modules.

[0023] The present invention provides a slip ring contact controllable system suitable for a matrix motor. The system realizes flexible adjustment of the motor working state and enhanced fault handling capability through fine design and control. The system is mainly composed of a stationary unit and a rotating unit: The stationary unit includes a main controller, a stator armature winding, a sliding contact module and an actuating unit. These components are in the stationary part of the motor and are responsible for processing and transmitting control signals, as well as being electrically connected to the rotating part through the sliding contact module. The rotating unit includes a slip ring rotating module and a rotor armature winding. These components rotate with the motor rotor and maintain electrical connection with the sliding contact module of the stationary part through slip rings and brushes.

[0024] The principle is that the stationary unit and the rotating unit are physically and electrically connected through the sliding contact module. The slip ring rotating module (including brushes and slip rings) is the key to this connection, which allows the current to be transmitted between the stationary and rotating parts. The actuating unit is responsible for accurately controlling the contact state of the brushes and slip rings in the sliding contact module through actuating actions (such as mechanical movement). This can open or close the electrical connection according to the needs of the motor, thereby realizing flexible switching of the motor's operating mode.

[0025] Furthermore, when the motor needs the rotor winding to work, the main controller controls the rotor armature winding to be powered, and controls the actuating unit to make the sliding contact module contact, thereby powering the rotor winding. When the motor does not need the rotor winding to work, the main controller controls the actuating unit to disconnect the sliding contact module, thereby powering off the rotor winding, and separating the slip ring from the brush, thereby protecting the service life of the slip ring and the motor. The present invention realizes controllable contact state of the slip ring, thereby improving the service life and reliability of the slip ring and the motor.

[0026] Furthermore, the main controller is responsible for analyzing the current working status of the motor (such as speed, current, temperature, etc.), processing any potential fault signals, and deciding whether the stator armature winding and the rotor armature winding need to work based on this information. If a fault is detected or the working mode needs to be adjusted, the main controller will issue control instructions to the actuator unit and other related modules. The stator armature winding and the rotor armature winding are the core parts of the motor, and they are electrically connected through the sliding contact module and the slip ring rotation module. This design allows the motor to have stronger fault handling capabilities and working mode switching capabilities while maintaining efficient operation.

[0027] As an example, Figure 1 As shown, a slip ring contact controllable system structure suitable for matrix motors is mainly composed of a stationary unit and a rotating unit. The stationary unit includes: a main controller, a stator armature winding power supply module, a stator armature winding, a rotor armature winding power supply module, an actuating unit power supply module, a fault diagnosis module, a sliding contact module and an actuating unit. The rotating unit includes: a slip ring rotating module and a rotor armature winding. The stationary unit and the rotating unit rely on the sliding contact module to achieve physical contact and electrical connection.

[0028] The main controller has the function of controlling the stator armature winding power supply module, the rotor armature winding power supply module and the actuator unit power supply module, and also has the function of processing the fault signal transmitted by the fault diagnosis module. Furthermore, the main controller can be a plurality of separate controllers, an integrated single controller, or an extension of a traditional motor controller.

[0029] The stator armature winding power supply module, the rotor armature winding power supply module and the actuator unit power supply module respectively supply power to the stator armature winding, the rotor armature winding and the actuator unit. The fault diagnosis module is used to monitor and diagnose the fault conditions of each module in the system and generate a diagnosis signal.

[0030] In some embodiments, the fault diagnosis module can diagnose the stator armature winding power supply module, the rotor armature winding power supply module, the actuating unit power supply module, the sliding contact module and the actuating unit, and diagnose the rotor armature winding of the rotating unit at the same time. The fault diagnosis module can be directly connected to the sensors in these modules.

[0031] The sliding contact module mainly includes a conductive brush and a metal guide rail. The conductive brush is connected to the actuating unit and is regarded as the stationary part of the sliding contact module. The metal guide rail is connected to the slip ring rotating module and is regarded as the rotating part of the sliding contact module. There are two states between the metal guide rail and the conductive brush: contact and disconnection. The conductive brush can adjust its position with the actuating unit to achieve contact or disconnection with the metal guide rail. In the contact state, the conductive brush is physically in contact and electrically connected to the metal guide rail. In the disconnected state, the conductive brush is physically disconnected and electrically disconnected from the metal guide rail.

[0032] The actuating unit is used to control the position of the conductive brush wire, and further control the contact state between the conductive brush wire and the guide rail.

[0033] In some embodiments, the actuating unit may be an electromagnetic relay, a pulse relay, a torque motor, a limited angle motor, a stepping motor, etc.

[0034] In some embodiments, when the actuating unit works, the conductive brush wire is in physical contact with the guide rail; when the actuating unit does not work and the return spring works, the conductive brush wire is disconnected from the guide rail.

[0035] Furthermore, in some other embodiments, when the actuating unit works, the physical contact between the conductive brush and the guide rail is disconnected; when the actuating unit does not work and the return spring works, the physical contact between the conductive brush and the guide rail is achieved.

[0036] As an example, the slip ring rotation module proposed in the present invention can also be a magnetically controlled slip ring. The contact state of the slip ring is controlled by the magnetic module, so that the working state of the slip ring can be controlled. Its structure is simple and can be installed in the slip ring of small and medium-sized motors. This type of precision slip ring is only the size of a normal person's fist, or even smaller, and there is no space for an additional actuating mechanism. However, the structure proposed in the present invention is compact and occupies very little space, so it can be set in a precision slip ring. At the same time, since the feedback path is shorter, the control response is fast. By adopting a reset spring, the actuation only needs one direction, which improves the control accuracy and reduces the control difficulty. For a matrix motor with a winding of a slip ring rotor, rapid, accurate and efficient control of the slip ring working state can be achieved, thereby improving the life and reliability of the slip ring and the motor.

[0037] The present invention proposes a control method for a slip ring contact controllable system applicable to a matrix motor, comprising the following steps: The main controller analyzes the working status of the motor, processes fault signals, and determines whether the sub-armature winding and the rotor armature winding need to work, and sends control instructions to the lower-level modules; and determines whether the rotor winding needs to work according to the application working conditions; Determine whether the armature winding power supply module, the rotor armature winding power supply module and the actuator unit power supply module can work normally according to the fault diagnosis module.

[0038] Obtain fault diagnosis signals of the rotor armature winding power supply module, the actuator unit power supply module, the actuator unit, the slip ring and the armature winding to determine whether the rotor winding can work.

[0039] The invention also includes: according to the PWM signal of the main controller, the rotor armature winding power supply module provides the required current for the slip ring and the rotor armature winding.

[0040] Furthermore, it also includes: according to the control signal of the main controller, the actuating unit power supply module issues a control instruction to the actuating unit to realize the working state switching of the sliding contact module: According to the actuation control signal, the sliding contact module has two working states: in the working state, the stationary part of the sliding module is in friction contact with the rotating part, and the slip ring works normally; in the non-working state, the stationary part of the sliding module is disconnected from the rotating part, and the slip ring does not work.

[0041] As an example, Figure 2 As shown, the present invention proposes a control method for a slip ring contact controllable system suitable for a matrix motor, and the method mainly includes the following steps: Step 11: Based on the speed, torque, temperature and other signals, the user or the upper controller determines whether the rotor winding needs to work according to the application conditions, and the main control receives the instructions issued by the user or the upper controller. If the rotor winding needs to work, go to step 12. If the rotor winding does not need to work, go to step 22.

[0042] Step 12: Based on the diagnostic signal of the fault diagnosis module, the main controller preliminarily determines whether the system (including slip ring, power converter, actuator, etc.) can work. If the system can work, go to step 13. If the system cannot work, go to step 22.

[0043] Step 13: The main controller outputs a control signal to control the actuator unit to make the conductive brush wire contact the metal rail and the slip ring work normally. If the actuator unit and the slip ring work normally, go to step 14. Otherwise, go to step 22.

[0044] Step 14: The main controller controls the power converter to work normally and supplies power to the rotor winding. The main controller calculates the rotor winding current through speed, torque, temperature and other signals. The fault diagnosis module detects whether the current in the rotor armature winding is normal. If normal, go to step 15. If the rotor armature winding cannot be powered, go to step 22.

[0045] Step 15: The slip ring is in contact and the rotor armature winding is powered normally. The main controller and the fault diagnosis module continue to work. When any unit fault in steps 11, 12, 13, and 14 is detected, and the fault causes the rotor armature winding to be unable to be powered, step 22 is entered.

[0046] Step 22: The main controller controls the output control signal to control the actuator unit to disconnect the conductive brush wire and the metal guide rail, and the slip ring stops working.

[0047] Step 23: The slip ring breaks contact and there is no current in the rotor armature winding.

[0048] Step 31: After step 15 and step 23, enter the next working cycle and continue to determine whether the main controller receives instructions from the user or the upper controller.

[0049] It should be noted that all the judgments in the steps about whether a certain "module" or "unit" can work require the main controller to be based on the diagnostic signal sent by the fault diagnosis module.

[0050] Furthermore, in a special case, some faults cause the actuating unit to be unable to actuate, but the conductive brush wire maintains physical contact with the guide rail. Then, by controlling the rotor armature winding power supply module, the rotor armature winding can be powered or not powered.

[0051] Other types of slip ring contact controllable motors that meet the above structure and comply with the principles described in this patent are all within the scope of protection of this patent and are not listed here.

[0052] In summary, the present invention improves the motor slip ring power supply system and proposes a controllable slip ring contact system, which realizes the controllable working state of the slip ring, thereby improving the service life and reliability of the slip ring and the motor. When the motor needs the rotor winding to work, the main controller controls the rotor armature winding power supply, and controls the actuating unit to make the sliding contact module contact to realize the rotor winding power supply. When the motor does not need the rotor winding to work, the main controller controls the actuating unit to disconnect the sliding contact module to realize the rotor winding power off, and realize the separation of the slip ring and the brush, thereby protecting the service life of the slip ring and the motor. When the fault diagnosis module detects that the rotor armature winding power supply module cannot supply power normally, or other winding faults occur, the main controller also controls the actuating unit to disconnect the sliding contact module to protect the life of the slip ring.

[0053] The system is particularly suitable for application scenarios that require high reliability and flexibility, such as electric vehicles, wind power generation, industrial automation and other fields. In these applications, the motor may need to start, stop, accelerate and decelerate frequently, and also need to deal with various complex fault conditions. By adopting the slip ring contact controllable system of the present invention, the operating efficiency and reliability of the motor can be significantly improved, the failure rate can be reduced, and the service life of the motor can be extended.

[0054] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0056] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the foregoing claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended to be a waiver of such subject matter, nor should it be considered that the applicant has not considered such subject matter to be part of the disclosed inventive subject matter.

[0057] It should be noted that, in the description of the present invention, the terms "module", "unit", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order or attribution relationship between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0058] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the foregoing claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended to be a waiver of such subject matter, nor should it be considered that the applicant has not considered such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A slip ring contact controllable system suitable for a matrix motor, characterized in that: include: Stationary and rotating units; The stationary unit comprises: a main controller, a stator armature winding, a sliding contact module and an actuating unit; The rotating unit comprises: a slip ring rotating module and a rotor armature winding, and the stationary unit and the rotating unit rely on a sliding contact module to achieve physical contact and electrical connection; the slip ring rotating module is connected to the rotor armature winding and rotates with the rotor, and includes a brush and a slip ring; The actuating unit is used to control the contact between the brush and the slip ring in the sliding contact module through an actuating action; the stator armature winding is arranged in coordination with the rotor armature winding; The main controller is used to analyze the working state of the motor, process fault signals, determine whether the sub-armature winding and the rotor armature winding need to work, and send control instructions to the lower-level modules.

2. A slip ring contact controllable system suitable for a matrix motor according to claim 1, characterized in that: The stationary unit further comprises: a stator armature winding power supply module, a rotor armature winding power supply module, and an actuating unit power supply module; The stator armature winding power supply module, the rotor armature winding power supply module and the actuating unit power supply module respectively supply power to the stator armature winding, the rotor armature winding and the actuating unit.

3. A slip ring contact controllable system suitable for a matrix motor according to claim 2, characterized in that: The main controller includes a plurality of controllers, and the plurality of controllers independently control the stator armature winding power supply module, the rotor armature winding power supply module and the actuating unit power supply module respectively.

4. A slip ring contact controllable system suitable for a matrix motor according to claim 1, characterized in that: The stationary unit further comprises: a fault diagnosis module; The fault diagnosis module is used to monitor and diagnose the fault conditions of each module in the system and generate a diagnosis signal.

5. The slip ring contact controllable system suitable for a matrix motor according to claim 1, characterized in that: The sliding contact module includes a conductive brush and a metal guide rail; the conductive brush is connected to the actuating unit, and the metal guide rail is connected to the slip ring rotating module; the metal guide rail and the conductive brush are in two states: contact and disconnection. In the contact state, the conductive brush wire is in physical contact and electrical connection with the metal rail; in the disconnected state, the conductive brush wire is disconnected from the metal rail. The actuating unit is used to control the position of the conductive brush wire, and further control the contact state between the conductive brush wire and the guide rail.

6. A slip ring contact controllable system suitable for a matrix motor according to claim 5, characterized in that: The actuating unit comprises a reset spring. When the actuating unit is working, the conductive brush wire is in physical contact with the guide rail; when the actuating unit is not working, the reset spring is working, and the conductive brush wire is disconnected from the guide rail.

7. The slip ring contact controllable system suitable for a matrix motor according to claim 5, characterized in that: The actuating unit includes a reset spring. When the actuating unit works, the physical contact between the conductive brush wire and the guide rail is disconnected; when the actuating unit does not work and the reset spring works, the physical contact between the conductive brush wire and the guide rail is achieved.

8. A control method for a slip ring contact controllable system applicable to a matrix motor based on any one of claims 1 to 7, characterized in that: include: The main controller analyzes the working status of the motor, processes fault signals, and determines whether the sub-armature winding and the rotor armature winding need to work, and sends control instructions to the lower-level modules; and determines whether the rotor winding needs to work according to the application working conditions; Determine whether the armature winding power supply module, the rotor armature winding power supply module and the actuator unit power supply module can work normally according to the fault diagnosis module; Obtain fault diagnosis signals of the rotor armature winding power supply module, the actuator unit power supply module, the actuator unit, the slip ring and the armature winding to determine whether the rotor winding can work.

9. The control method according to claim 8, characterized in that: Also includes: According to the control signal of the main controller, the actuator unit power supply module sends control instructions to the actuator unit to realize the working state switching of the sliding contact module: According to the actuation control signal, the sliding contact module has two working states: in the working state, the stationary part of the sliding module is in friction contact with the rotating part, and the slip ring works normally; In the non-working state, the stationary part of the sliding module is disconnected from the rotating part and the slip ring does not work.

10. A matrix motor system, characterized in that: A slip ring controllable system suitable for a matrix motor comprising the method described in any one of claims 1 to 9.

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