Bus valve control actuating unit integrated with external control function and control method

Abstract

The invention discloses a bus valve control actuation unit integrated with an external control function and a control method, and belongs to the technical field of valve control, and the bus valve control actuation unit comprises a sampling interface which is used for receiving and transmitting a load feedback signal; the load controller is used for receiving the load feedback signal and sending a load control signal; the valve controller is used for receiving the load control signal transmitted by the load controller and sending out a valve driving signal; the valve is used for receiving the valve driving signal and generating valve core displacement; the valve element displacement sensor is used for sending a valve element displacement feedback signal to the valve controller, the valve controller adjusts the valve driving signal according to the valve element displacement feedback signal, and closed-loop control over valve element displacement of the valve is achieved. According to the method, two controller entities are reduced into one controller entity, so that the effects of simplifying the system layout, shortening the system debugging workload and the like are achieved.

Description

Technical Field

[0001] The present invention relates to the field of valve control technology, and in particular to a bus valve control actuation unit and a control method integrating an external control function. Background Art

[0002] With the continuous deepening of intelligence in the machinery industry, valve hydraulic component manufacturers at home and abroad have developed various series of bus valves. However, judging from the currently available products, their valve control units only perform closed-loop control of the valve core displacement and achieve high-precision proportional control of the output flow. For specific external loads, external controllers are still required for signal acquisition and control.

[0003] Chinese invention patent application document CN116241522A discloses a bus-type multi-way valve, which includes a valve body, a valve core, an electromagnetic proportional valve, a controller and a pressure sensor. The valve body has an oil supply port and an oil return port. The valve core is arranged in the valve body, and the valve core can move to control the opening of the oil supply port and the oil return port. The pressure sensor, the controller and the pressure sensor are all arranged on the valve body, and the electromagnetic proportional valve and the pressure sensor are all connected to the controller. The pressure sensor can detect the pressure of the oil supply port, and the controller can control the action of the electromagnetic proportional valve according to the detection information of the pressure sensor. The electromagnetic proportional valve can control the movement of the valve core. The bus-type multi-way valve of this scheme adds a pressure sensor to assist in hydraulic control on the basis of conventional flow control, avoids damage to the valve body structure caused by hydraulic shock, improves the stability of the hydraulic system operation, and can be applied to more working scenarios. However, the goal of this scheme is to complete the closed-loop control of the valve core, and cannot achieve control of external loads. Summary of the invention

[0004] The present invention aims to at least solve the technical problem that the valve control unit in the prior art only performs closed-loop control of the valve core displacement and realizes high-precision proportional control of the output flow, but for specific external loads, an external controller is still required to perform signal acquisition and control.

[0005] To this end, an object of the present invention is to provide a bus valve control actuation unit with integrated external control function, comprising a valve core sensor and a sampling interface, a load controller, a valve controller, and a valve connected in series in sequence;

[0006] The valve core sensor is connected between the valve controller and the valve;

[0007] The sampling interface is used to receive and transmit a load feedback signal;

[0008] The load controller is used to receive the load feedback signal and send a load control signal;

[0009] The valve controller is used to receive the load control signal transmitted by the load controller and send out a valve driving signal;

[0010] The valve is used to receive the valve driving signal and generate valve core displacement;

[0011] The valve core sensor is used to send a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to achieve valve core displacement adjustment of the valve.

[0012] Furthermore, the valve controller comprises:

[0013] A valve controller, used for receiving the load control signal and issuing a valve control signal;

[0014] A valve driver, used for receiving the valve control signal and sending the valve drive signal;

[0015] The valve controller, the valve driver and the valve are connected in series in sequence.

[0016] Furthermore, the valve core sensor is connected between the valve controller and the valve.

[0017] Furthermore, the load feedback signal includes at least one of a load displacement feedback signal, a load pressure feedback signal and a load angle feedback signal.

[0018] Furthermore, the load feedback signal is a current analog signal or a voltage analog signal.

[0019] Furthermore, the load feedback signal is a digital signal corresponding to SSI, CAN or Modbus.

[0020] Furthermore, it also includes a multi-way valve main valve body, an output port of the multi-way valve main valve arranged on the multi-way valve main valve body, a hydraulic transfer transition block connected to one side of the multi-way valve main valve body, an operating handle of the multi-way valve connected to the other side of the multi-way valve main valve body, a bus pilot module electrical interface and a mechanical installation interface of the bus pilot valve arranged on the outside of the hydraulic transfer transition block, and the bus pilot module electrical interface is arranged on the outside of the mechanical installation interface of the bus pilot valve.

[0021] Furthermore, the output port of the multi-way valve main valve includes an output port A of the first multi-way valve main valve and an output port B of the second multi-way valve main valve.

[0022] The present invention provides a control method for a bus valve-controlled actuating unit with integrated external control function, which is implemented by using any of the above-mentioned bus valve-controlled actuating units with integrated external control function, and comprises the following steps:

[0023] The external sensor collects the load feedback signal and transmits it to the sampling interface;

[0024] The sampling interface receives the load feedback signal and transmits it to the load controller;

[0025] The load controller receives the load feedback signal and sends a load control signal;

[0026] The valve controller receives the load control signal and sends a valve drive signal;

[0027] The valve receives the valve driving signal and generates valve core displacement;

[0028] The valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal, and adjusts the valve drive signal according to the valve core displacement feedback signal to achieve adjustment of the valve core displacement of the valve.

[0029] Furthermore, the method further comprises:

[0030] The valve controller controls the load operation according to the load feedback signal; wherein,

[0031] If the load feedback signal is a CAN signal, the valve controller controls the operation of the load through the electrical interface of the bus pilot module; if the load feedback signal is a non-CAN signal, the valve controller controls the operation of the load through the pin of the additional socket.

[0032] The present invention provides a bus valve control actuation unit and method with integrated external control function, which has the following beneficial effects:

[0033] Based on the bus valve, the present invention introduces a sampling interface for external load feedback signals, and at the same time introduces a virtual load controller (which is an entity with the valve controller) into the valve controller, and executes a control algorithm for the external load (which is a prior art and will not be described in detail here), so that the system is integrated in a control valve entity to complete the control of external objects. It has a higher degree of integration, is easy to use, low-cost, and has a simplified system layout, which can meet market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1Schematic diagram of the structure of a bus valve-controlled actuating unit with integrated external control function in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the system principle of a bus valve-controlled actuating unit with integrated external control function in an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of a bus valve control actuation unit control method integrating external control functions in an embodiment of the present invention Figure 1 ;

[0038] Figure 4 A schematic diagram of a bus valve control actuation unit control method integrating external control functions in an embodiment of the present invention Figure 2 ;

[0039] Figure 5 This is a schematic diagram of signal flow of a bus valve-controlled actuating unit with integrated external control function in an embodiment of the present invention;

[0040] Figure 6 It is a control flow chart of the bus valve system in the prior art.

[0041] Reference numerals:

[0042] 1. Electrical interface of bus pilot module; 2. Mechanical installation interface of bus pilot valve; 3. Hydraulic transfer transition block; 4. Output port of the main valve of the first multi-way valve; 5. Output port of the main valve of the second multi-way valve; 6. Main valve body of the multi-way valve; 7. Operating handle of the multi-way valve. DETAILED DESCRIPTION

[0043] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0044] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present invention will occur to those skilled in the art.

[0045] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the general description of the invention given above and the detailed description of the embodiments given below, serve to explain the principles of the invention.

[0046] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0047] It should also be understood that, although the invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the invention that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0048] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0049] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present invention with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0052] In the description of the present invention, "plurality" means two or more.

[0053] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0054] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0057] Example 1

[0058] like Figure 1-Figure 2 As shown, this embodiment provides a bus valve control actuation unit with integrated external control function, including a valve core sensor and a sampling interface, a load controller, a valve controller, and a valve connected in series in sequence; the valve core sensor is connected between the valve controller and the valve;

[0059] The sampling interface is used to receive and transmit a load feedback signal;

[0060] The load controller is used to receive the load feedback signal and send a load control signal;

[0061] The valve controller is used to receive the load control signal transmitted by the load controller and send out a valve driving signal;

[0062] The valve is used to receive the valve driving signal and generate valve core displacement.

[0063] The valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to adjust the valve core displacement of the valve.

[0064] The present invention discloses a bus valve control actuation unit with integrated external control function, which expands the interface circuit of the existing bus valve controller, connects the feedback variable (displacement, pressure, or angle, etc.) of the external load to the bus valve controller, and adds a control program of the external control target in the application code to reduce the two controller entities to one controller entity, thereby simplifying the system layout, shortening the system debugging workload, etc.

[0065] Compared with the prior art, the bus valve-controlled actuating unit with integrated external control function of the present invention has the following differences:

[0066] The conventional bus valve system structure is as follows: Figure 5 As shown, the valve controller, valve driver and valve core displacement sensor are integrated inside the valve body, and the valve core displacement closed-loop control can be performed by the valve controller to achieve higher valve displacement (flow) output accuracy, so as to achieve precise control of external control targets;

[0067] The existing system layout will lead to complex cable and pipe connections, which is not convenient for the initial installation and subsequent maintenance of the system, and also leads to a higher failure rate. The valve controller and load controller need to be debugged separately, which is a lot of work. It is not the best choice in terms of cost, efficiency, system layout, maintainability, etc.

[0068] In industrial control applications, axis control (control of a certain control target, such as displacement, speed, pressure, etc.) is a classic application scenario. For OEMs and users, ease of use, low cost, and simplified system layout are the most prominent customer demands.

[0069] On the basis of the bus valve, the present invention introduces a sampling interface for the external load feedback signal, and at the same time introduces a virtual load controller (which is an entity with the valve controller) into the valve controller, and executes the control algorithm of the external load (which is the prior art and will not be described in detail here), so that the system is integrated in a control valve entity to complete the control of the external object, has a higher degree of integration, is easy to use, low-cost, and has a simplified system layout, which can meet market demand.

[0070] Example 2

[0071] like Figure 1-Figure 2 As shown, this embodiment provides a bus valve control actuation unit with integrated external control function, including a valve core sensor and a sampling interface, a load controller, a valve controller, and a valve connected in series in sequence; the valve core sensor is connected between the valve controller and the valve;

[0072] The sampling interface is used to receive and transmit a load feedback signal;

[0073] The load controller is used to receive the load feedback signal and send a load control signal;

[0074] The valve controller is used to receive the load control signal transmitted by the load controller and send out a valve driving signal;

[0075] The valve is used to receive the valve driving signal and generate valve core displacement.

[0076] The valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to adjust the valve core displacement of the valve.

[0077] The present invention discloses a bus valve control actuation unit with integrated external control function, which expands the interface circuit of the existing bus valve controller, connects the feedback variable (displacement, pressure, or angle, etc.) of the external load to the bus valve controller, and adds a control program of the external control target in the application code to reduce the two controller entities to one controller entity, thereby simplifying the system layout, shortening the system debugging workload, etc.

[0078] Compared with the prior art, the bus valve-controlled actuating unit with integrated external control function of the present invention has the following differences:

[0079] The conventional bus valve system structure is as follows: Figure 5 As shown, the valve controller, valve driver and valve core displacement sensor are integrated inside the valve body, and the valve core displacement closed-loop control can be performed by the valve controller to achieve higher valve displacement (flow) output accuracy, so as to achieve precise control of external control targets;

[0080] The existing system layout will lead to complex cable and pipe connections, which is not convenient for the initial installation and subsequent maintenance of the system, and also leads to a higher failure rate. The valve controller and load controller need to be debugged separately, which is a lot of work. It is not the best choice in terms of cost, efficiency, system layout, maintainability, etc.

[0081] In industrial control applications, axis control (control of a certain control target, such as displacement, speed, pressure, etc.) is a classic application scenario. For OEMs and users, ease of use, low cost, and simplified system layout are the most prominent customer demands.

[0082] On the basis of the bus valve, the present invention introduces a sampling interface for external load feedback signals, and at the same time introduces a virtual load controller (which is an entity with the valve controller) into the valve controller, and executes the control algorithm of the external load (which is the prior art and will not be described in detail here), so that the system is integrated in a control valve entity, and the control of the external object can be completed. It has a higher degree of integration, is easy to use, low-cost, and has a simplified system layout, which can meet market demand.

[0083] The difference between this embodiment and the first embodiment is that:

[0084] The valve controller comprises:

[0085] A valve controller, used for receiving the load control signal and issuing a valve control signal;

[0086] A valve driver, used for receiving the valve control signal and sending the valve drive signal;

[0087] The valve controller, the valve driver and the valve are connected in series in sequence.

[0088] The present invention also includes a valve core sensor for sending a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal, thereby adjusting the valve core displacement of the valve and ensuring the control accuracy of the flow rate; the valve core sensor is connected between the valve and the valve controller.

[0089] Example 3

[0090] like Figure 1-Figure 2 As shown, this embodiment provides a bus valve control actuation unit with integrated external control function, including a valve core sensor and a sampling interface, a load controller, a valve controller, and a valve connected in series in sequence; the valve core sensor is connected between the valve controller and the valve;

[0091] The sampling interface is used to receive the load feedback signal and transmit it;

[0092] The load controller is used to receive the load feedback signal and send a load control signal;

[0093] The valve controller is used to receive the load control signal transmitted by the load controller and send out a valve driving signal;

[0094] The valve is used to receive the valve driving signal and generate valve core displacement.

[0095] The valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to adjust the valve core displacement of the valve.

[0096] The present invention discloses a bus valve control actuation unit with integrated external control function, which expands the interface circuit of the existing bus valve controller, connects the feedback variable (displacement, pressure, or angle, etc.) of the external load to the bus valve controller, and adds a control program of the external control target in the application code to reduce the two controller entities to one controller entity, thereby simplifying the system layout, shortening the system debugging workload, etc.

[0097] Compared with the prior art, the bus valve-controlled actuating unit with integrated external control function of the present invention has the following differences:

[0098] The conventional bus valve system structure is as follows: Figure 6As shown, the valve controller, valve driver and valve core displacement sensor are integrated inside the valve body, and the valve core displacement closed-loop control can be performed by the valve controller to achieve higher valve displacement (flow) output accuracy, so as to achieve precise control of external control targets;

[0099] The existing system layout will lead to complex cable and pipe connections, which is not convenient for the initial installation and subsequent maintenance of the system, and also leads to a higher failure rate. The valve controller and load controller need to be debugged separately, which is a lot of work. It is not the best choice in terms of cost, efficiency, system layout, maintainability, etc.

[0100] In industrial control applications, axis control (control of a certain control target, such as displacement, speed, pressure, etc.) is a classic application scenario. For OEMs and users, ease of use, low cost, and simplified system layout are the most prominent customer demands.

[0101] On the basis of the bus valve, the present invention introduces a sampling interface for external load feedback signals, and at the same time introduces a virtual load controller (which is an entity with the valve controller) into the valve controller, and executes the control algorithm of the external load (which is the prior art and will not be described in detail here), so that the system is integrated in a control valve entity, and the control of the external object can be completed. It has a higher degree of integration, is easy to use, low-cost, and has a simplified system layout, which can meet market demand.

[0102] The valve controller comprises:

[0103] A valve controller, used for receiving the load control signal and issuing a valve control signal;

[0104] A valve driver, used for receiving the valve control signal and sending the valve drive signal;

[0105] The valve controller, the valve driver and the valve are connected in series in sequence.

[0106] The present invention also includes a valve core sensor for sending a valve core displacement feedback signal to the valve controller. The valve controller adjusts the valve control signal according to the valve core displacement feedback signal, and the valve driver adjusts the valve drive signal, thereby adjusting the valve core displacement of the valve and ensuring the control accuracy of the flow rate. The valve core sensor is connected between the valve and the valve controller.

[0107] The difference between this embodiment and the second embodiment is that:

[0108] A bus valve-controlled actuation unit with integrated external control function of the present invention also includes a multi-way valve main valve body 6, an output port of the multi-way valve main valve arranged on the multi-way valve main valve body 6, a hydraulic transfer transition block 3 connected to one side of the multi-way valve main valve body 6, an operating handle 7 of the multi-way valve connected to the other side of the multi-way valve main valve body 6, a bus pilot module electrical interface 1 and a mechanical installation interface 2 of the bus pilot valve arranged on the outside of the hydraulic transfer transition block 3, and the bus pilot module electrical interface 1 is arranged on the outside of the mechanical installation interface 2 of the bus pilot valve.

[0109] The output ports of the multi-way valve main valve include an output port 4 of the first multi-way valve main valve and an output port 5 of the second multi-way valve main valve.

[0110] like Figure 5 As shown, the main function of the sampling interface is to receive external load feedback signals, which are current analog signals or voltage analog signals; specifically, the load feedback signals are digital signals corresponding to SSI, CAN or Modbus. If the measurement feedback signal of the external sensor is given to the load controller via CAN, the bus pilot module electrical interface 1 of the valve-controlled actuator unit can be reused. If the external feedback signal is of other types, it can also be quickly implemented by adding socket pins. The main functions and main signal flows of the MCU controller are as follows: Figure 4 shown.

[0111] Example 4

[0112] like Figure 3 As shown, this embodiment provides a bus valve-controlled actuating unit control method with integrated external control function, which is implemented by using the bus valve-controlled actuating unit with integrated external control function described in any of the above embodiments, and includes the following steps:

[0113] Step S1: The hydraulic cylinder displacement sensor collects a load feedback signal and transmits it to the sampling interface;

[0114] Step S2: the sampling interface receives the load feedback signal and transmits it to the load controller;

[0115] Step S3: the load controller receives the load feedback signal and sends a load control signal;

[0116] Step S4: the valve controller receives the load control signal and sends a valve drive signal;

[0117] Step S5: the valve receives the valve driving signal and generates valve core displacement;

[0118] Step S6: the valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to adjust the valve core displacement of the valve.

[0119] The method further comprises:

[0120] The valve controller controls the load operation according to the type of the load feedback signal; wherein,

[0121] If the load feedback signal is a CAN signal, the valve controller controls the operation of the load through the electrical interface of the bus pilot module; if the load feedback signal is a non-CAN signal, the valve controller controls the operation of the load through the pin of the additional socket.

[0122] Example 5

[0123] like Figure 4 As shown, this embodiment provides a bus valve-controlled actuating unit control method with integrated external control function, which is implemented by using the bus valve-controlled actuating unit with integrated external control function described in any of the above embodiments, and includes the following steps:

[0124] Step S1: The pressure sensor collects the load feedback signal and transmits it to the sampling interface;

[0125] Step S2: the sampling interface receives the load feedback signal and transmits it to the load controller;

[0126] Step S3: the load controller receives the load feedback signal and sends a load control signal;

[0127] Step S4: the valve controller receives the load control signal and sends a valve drive signal;

[0128] Step S5: the valve receives the valve driving signal and generates valve core displacement;

[0129] Step S6: the valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to adjust the valve core displacement of the valve.

[0130] The method further comprises:

[0131] The valve controller controls the load operation according to the type of the load feedback signal; wherein,

[0132] If the load feedback signal is a CAN signal, the valve controller controls the operation of the load through the electrical interface of the bus pilot module; if the load feedback signal is a non-CAN signal, the valve controller controls the operation of the load through the pin of the additional socket.

Claims

1. A bus valve-controlled actuation unit with integrated external control function, characterized in that: It includes a valve core sensor and a sampling interface, a load controller, a valve controller, and a valve connected in series in sequence; The valve core sensor is connected between the valve controller and the valve; The sampling interface is used to receive and transmit a load feedback signal; The load controller is used to receive the load feedback signal and send a load control signal; The valve controller is used to receive the load control signal transmitted by the load controller and send out a valve driving signal; The valve is used to receive the valve driving signal and generate valve core displacement; The valve core sensor is used to send a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal and adjusts the valve drive signal according to the valve core displacement feedback signal to achieve valve core displacement adjustment of the valve.

2. The bus valve-controlled actuation unit with integrated external control function according to claim 1, characterized in that: The valve controller comprises: A valve controller, used for receiving the load control signal and issuing a valve control signal; A valve driver, used for receiving the valve control signal and sending the valve drive signal; The valve controller, the valve driver and the valve are connected in series in sequence.

3. The bus valve-controlled actuation unit with integrated external control function according to claim 2, characterized in that: The valve core sensor is connected between the valve controller and the valve.

4. The bus valve-controlled actuation unit with integrated external control function according to claim 1, characterized in that: The load feedback signal includes at least one of a load displacement feedback signal, a load pressure feedback signal and a load angle feedback signal.

5. The bus valve-controlled actuation unit with integrated external control function according to claim 1, characterized in that: The load feedback signal is a current analog signal or a voltage analog signal.

6. The bus valve-controlled actuation unit with integrated external control function according to claim 1, characterized in that: The load feedback signal is a digital signal corresponding to SSI, CAN or Modbus.

7. The bus valve-controlled actuation unit with integrated external control function according to claim 1, characterized in that: It also includes a multi-way valve main valve body, an output port of the multi-way valve main valve arranged on the multi-way valve main valve body, a hydraulic transfer transition block connected to one side of the multi-way valve main valve body, an operating handle of the multi-way valve connected to the other side of the multi-way valve main valve body, a bus pilot module electrical interface and a mechanical installation interface of the bus pilot valve arranged on the outside of the hydraulic transfer transition block, and the bus pilot module electrical interface is arranged on the outside of the mechanical installation interface of the bus pilot valve.

8. The bus valve-controlled actuation unit with integrated external control function according to claim 7, characterized in that: The output ports of the multi-way valve main valve include an output port A of the first multi-way valve main valve and an output port B of the second multi-way valve main valve.

9. A bus valve-controlled actuation unit control method integrating external control function, characterized in that: The implementation is achieved by using the bus valve-controlled actuation unit with integrated external control function according to any one of claims 1 to 8, comprising the following steps: The external sensor collects the load feedback signal and transmits it to the sampling interface; The sampling interface receives the load feedback signal and transmits it to the load controller; The load controller receives the load feedback signal and sends a load control signal; The valve controller receives the load control signal and sends a valve drive signal; The valve receives the valve driving signal and generates valve core displacement; The valve core sensor sends a valve core displacement feedback signal to the valve controller; the valve controller receives the valve core displacement feedback signal, and adjusts the valve drive signal according to the valve core displacement feedback signal to achieve adjustment of the valve core displacement of the valve.

10. The bus valve-controlled actuation unit control method with integrated external control function according to claim 9, characterized in that: Also includes: The valve controller controls the load operation according to the type of the load feedback signal; wherein, If the load feedback signal is a CAN signal, the valve controller controls the operation of the load through the electrical interface of the bus pilot module; if the load feedback signal is a non-CAN signal, the valve controller controls the operation of the load through the pin of the additional socket.

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