Speed regulator based on mechanical-electric-hydraulic integrated design technology

Abstract

The invention provides a speed regulator based on a mechanical-electric-hydraulic integrated design technology, and relates to the technical field of speed regulators, and the speed regulator comprises a transmission system, a lower shell assembly, a beta execution system, a low-distance indication assembly, a stepping motor system, an upper shell assembly, a reverse propeller control system and an oil pump system. By integrating the transmission system, the lower shell assembly, the upper shell assembly, the beta execution system, the low-distance indication assembly, the stepping motor system, the reverse propeller control system and the oil pump system, a mechanical-electric-hydraulic integrated structure is formed, and the problems that a traditional speed regulator is low in speed selection precision, reverse propeller response lags behind, functional parts are dispersed, and state feedback is insufficient are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of speed governor, and particularly relates to a speed governor based on mechatronic design technology. BACKGROUND

[0002] The speed governor is a propeller speed regulation control device, which is installed in the engine reduction casing. The speed governor has the functions of constant speed regulation, step motor type speed selection, and reverse propeller, etc. The centrifugal counterweight senses the change of the rotation speed, maintains the propeller at the selected rotation speed, ensures that the propeller power absorption matches the engine output power, and realizes the reverse propeller of the propeller through the reverse propeller electromagnetic valve control during the airplane landing taxiing process.

[0003] The traditional speed governor mainly adopts a pure mechanical hydraulic structure. Its working principle mainly depends on the mechanical transmission mechanism (such as centrifugal counterweight) to sense the change of the rotation speed, drives the mechanical components to adjust the pitch through the pressure oil provided by the oil pump system, and realizes the functions of reverse propeller, small pitch stop, etc. through the mechanical valve or linkage structure. However, such traditional design has many technical defects in practical application, and it is difficult to meet the needs of modern flight for the high precision, high responsiveness, high integration, and reliable state feedback of the speed governor. The specific performance is as follows:

[0004] The speed selection accuracy is insufficient, and the adaptability is limited: the speed selection function of the traditional speed governor depends on the mechanical structure (such as cam, lever, etc.) to realize, and its gear setting accuracy is low, and the adjustment speed is slow. It is difficult to realize the accurate and rapid switching of multiple gears, and it cannot adapt to complex flight conditions (such as the rotation speed requirements in different stages of take-off, cruising, landing, etc.), which limits the flexibility of the propeller and engine power matching;

[0005] The reverse propeller response is lagging, and the safety needs to be improved: in the existing technology, the reverse propeller function mainly depends on pure hydraulic drive or mechanical linkage control, and its action response speed is slow and the delay is obvious. During the airplane landing taxiing stage, the reverse propeller lagging will lead to poor deceleration effect, increase the landing taxiing distance, and affect the flight safety;

[0006] The functional integration is low, and the structural redundancy is high: the small pitch stop, oil circuit control, speed selection, reverse propeller, etc. of the traditional speed governor are arranged dispersedly, and each component is connected through complex oil circuit and mechanical link. This leads to large overall volume and weight increase, not only occupies more installation space, but also reduces the reliability and maintenance convenience of the system. The dispersed structure is easy to cause faults due to oil leakage, mechanical wear, etc., and it is difficult to troubleshoot and replace the components;

[0007] The state feedback is missing, and the controllability is insufficient: the existing speed governor lacks effective and reliable electrical signal feedback mechanism for the key state (such as the small pitch position of the propeller). When the propeller pitch is lower than the safe small pitch angle, the crew cannot obtain the relevant information in real time, and it is difficult to accurately control the propeller state, which has potential operation risks. SUMMARY

[0008] The application provides a speed regulator based on a mechatronic-hydraulic integrated design technology to solve at least one of the above technical problems.

[0009] To solve the above technical problems, the application discloses a speed regulator based on a mechatronic-hydraulic integrated design technology, comprising:

[0010] A transmission system is arranged at the input end of the speed regulator, used to connect the engine and the speed regulator and to sense the change of the engine speed, and to transmit power to the inside of the speed regulator to respond to the change of the flight condition;

[0011] A lower housing assembly and an upper housing assembly, the transmission system is arranged on the lower housing assembly, the bottom of the lower housing assembly is used as a part of an oil pump system to provide high-pressure oil supply, and the top of the lower housing assembly is used to connect the upper housing assembly, the upper housing assembly is arranged on the top of the lower housing assembly to support a stepper motor system and to transmit a stepper motor speed selection signal to an oil path control component inside the speed regulator;

[0012] A β execution system is arranged on the side of the lower housing assembly and connected with the propeller, used to control the on-off of the high-pressure oil through a β valve and to realize a small-distance stop;

[0013] A low-distance indication assembly is arranged on the β execution system, used to send a signal to the aircraft control console by sensing the position of the β valve;

[0014] A stepper motor system is arranged on the upper part of the speed regulator, used to receive a control signal to select the speed of the propeller;

[0015] A reverse propeller control system is arranged on the speed regulator and associated with the β execution system, used to start the reverse propeller function when the reverse propeller is needed;

[0016] An oil pump system (8) is arranged on the bottom of the lower housing assembly and engaged with the transmission system, used to filter the engine lubricating oil and to provide high-pressure oil for the speed regulator system.

[0017] Preferably, the transmission system comprises a centrifugal weight assembly and a valve sleeve, the centrifugal weight assembly is used to sense the change of the engine speed, and the valve sleeve is used to convert the change of the speed into mechanical displacement and transmit to the inside of the speed regulator.

[0018] Preferably, the lower housing assembly comprises a lower housing, a driven gear shaft, a positioning pin, a plug, a spring and an adjusting washer, the lower housing serves as a support carrier, the bottom of which is provided with a gear shaft hole, the driven gear shaft is installed in the gear shaft hole through a bearing, the axial position of the driven gear shaft is limited by the positioning pin, the plug is sealingly installed at the oil passage outlet end of the side wall of the lower housing, the spring is sleeved on the outer edge of the driven gear shaft, and the two ends are pre-tightened through the adjusting washer, the adjusting washer is arranged between the end of the spring and the inner wall of the lower housing, and is used for adjusting the pre-tightening force of the spring;

[0019] The stepping motor system comprises a stepping motor, which receives control signals of the engine propeller electronic controller, drives the internal mechanism of the speed regulator to select different rotating speeds, and maintains the current selected speed position through the self-locking structure in case of failure or power failure;

[0020] The upper housing assembly comprises an upper housing, a threaded sleeve, a guide screw, a valve core valve cap body and a spring, the top of the upper housing is provided with a motor mounting hole, the bottom is sealingly connected with the lower housing assembly, the threaded sleeve is fixed in the interior of the upper housing and is provided with a threaded hole in the center, the guide screw penetrates through the threaded hole of the threaded sleeve, the upper end is connected with the output shaft of the stepping motor system, and the lower end is connected with the valve core valve cap body, the valve core valve cap body is slidingly arranged in the oil cavity at the bottom of the upper housing, is pre-tightened at the tail end of the guide screw through the spring, and the spring is sleeved on the outside of the guide screw and abuts against the lower end face of the threaded sleeve and the upper end face of the valve core valve cap body at the two ends respectively, the guide screw converts the rotary motion of the stepping motor system into linear motion, drives the valve core valve cap body to switch the oil passage, and realizes the setting of the rotating speed balance point.

[0021] Preferably, the β execution system comprises a β valve, a sealing ring and a cap, the β valve penetrates through the execution body in the axial direction, the front end is connected with the propeller variable pitch mechanism through a joint bolt, the tail end is sleeved with the cap, the sealing ring is nested in the gap between the β valve and the execution body, the cap is threadedly fixed at the tail end of the execution body, the inner side is provided with a limiting boss which is clamped with the tail end of the β valve, the axial displacement of the β valve is controlled by the propeller pitch change, the valve core section controls the high-pressure oil on-off through the opening and closing oil passage hole, and the limiting section cooperates with the inner side boss of the cap to realize the small pitch stop.

[0022] Preferably, the low pitch indication assembly comprises an electric socket, a micro switch, a valve support, a valve bracket and a wire, the valve support is fixed on the β execution system shell through a bolt, the front end is provided with a U-shaped clamping groove, the valve bracket is nested in the U-shaped clamping groove of the valve support, the tail end is hinged with the β valve of the β execution system through a connecting rod, the micro switch is installed on the side wall of the valve support, the trigger rod thereof is vertically clamped with the side face boss of the valve bracket, the electric socket is sealingly embedded in the assembly shell and is connected with the micro switch circuit through the wire, when the β valve axially displaces, the valve bracket is driven to slide in the U-shaped clamping groove, the micro switch trigger rod is pushed to switch the circuit state, and at the same time, when the propeller pitch is lower than the specified small pitch angle, an electric signal is sent to the aircraft control console through the electric socket and the wire.

[0023] Preferably, the anti-feathering control system comprises an anti-feathering electromagnetic valve, a hinge bolt and a carbon block assembly, the anti-feathering electromagnetic valve is fixed to the governor housing through a flange, the plunger axis is coaxial with the β valve, the carbon block assembly is embedded in the groove at the end of the plunger and is fixed radially by a locking screw, one end of the hinge bolt is hinged to the lug at the tail end of the β valve and the other end is in spherical contact with the carbon block assembly, when the anti-feathering electromagnetic valve is energized, the plunger pushes the carbon block assembly forward, the β valve is axially displaced by the hinge bolt to remove the small-distance limit and switch the high-pressure oil circuit to achieve the anti-feathering of the propeller.

[0024] Preferably, the oil pump system (8) comprises a base plate, a driven gear, a driven gear shaft, a sealing ring and an oil filter assembly, the base plate is fixed to the bottom of the lower housing assembly by a positioning pin, the center is provided with a gear shaft hole, the driven gear shaft penetrates the gear shaft hole of the base plate, the front end is connected with the driven gear through a spline, the rear end is supported in the bearing hole of the lower housing assembly, the driven gear is engaged with the driving gear of the transmission system, the engagement point is located at the tangent point of the pitch circle of the gear pair, the sealing ring is nested in the gap between the driven gear shaft and the hole wall of the base plate, and the oil filter assembly is detachably installed on the oil inlet of the base plate through a buckle structure, which is used to filter the oil from the engine to provide a clean high-pressure oil source for the governor, and the filter element axis is perpendicular to the oil inlet direction.

[0025] Preferably, it further comprises a health state self-diagnosis module, the health state self-diagnosis module comprises:

[0026] A multi-source data acquisition and synchronization submodule is used for real-time synchronous acquisition of the mechanical-electrical-hydraulic multi-dimensional data of the governor, establishment of a working condition database with time stamp alignment, and multi-dimensional data including vibration spectrum signals of bearing positions of the transmission system, displacement encoding signals of the valve shaft of the β execution system, harmonic distortion rate of the driving current of the stepping motor system, and oil temperature signals of the high-pressure outlet of the oil pump system;

[0027] A fault feature analysis submodule is used for dynamic residual error diagnosis and multi-scale trend analysis based on the displacement encoding signals of the valve shaft of the β execution system to extract the fault feature λ(t) of the governor;

[0028] A health evaluation and prediction submodule is used for calculating the comprehensive health index and predicting the remaining life based on the static health indicators and dynamic health indicators generated by the dynamic residual error diagnosis;

[0029] An adaptive decision and fault-tolerant control submodule is used for executing a hierarchical response strategy according to the fault level.

[0030] Preferably, the fault feature analysis submodule comprises:

[0031] A dynamic residual error diagnosis unit is used for generating a residual error sequence based on the displacement encoding signals of the valve shaft of the β execution system and the actual feedback position, and calculating the static health indicators and dynamic health indicators;

[0032] wherein the residual sequence r k = |u k - y k |; wherein u k is the kth displacement encoding signal of the beta execution system spool shaft, y k is the kth actual feedback position signal of the beta execution system spool shaft;

[0033] Static health indicator: Dynamic health indicator wherein is the residual mean, N is the number of samples in the sliding window, y k-1 is the k-1th actual feedback position signal of the beta execution system spool shaft;

[0034] A multi-scale trend analysis unit is configured to establish a degradation model of the oil pump loading cycle and the temperature rise slope of the high-pressure outlet of the oil pump system, wherein the failure rate function of the degradation model of the oil pump loading cycle and the temperature rise slope of the high-pressure outlet of the oil pump system is: λ(t) = αe βt + γln(t + 1); wherein λ(t) is a function of the failure rate over time, α, β and γ are respectively a degradation coefficient of the oil pump loading cycle, an influence factor of the temperature rise slope of the high-pressure outlet of the oil pump system and an aging coefficient of the governor, ln is a logarithm with e as the base, and t represents the cumulative running time of the governor.

[0035] Preferably, the health assessment and prediction sub-module comprises:

[0036] A health degree calculation unit is configured to calculate a comprehensive health index, wherein the comprehensive health index is calculated as:

[0037] wherein w1, w2 and w3 are respectively a weight coefficient one, a weight coefficient two and a weight coefficient three, f v is a vibration frequency spectrum signal of the bearing position of the transmission system, f vnom is a vibration frequency spectrum reference signal of the bearing position of the transmission system, H smax is a preset threshold value of the static health indicator, H dmin is a preset threshold value of the dynamic health indicator.

[0038] A residual life prediction unit is configured to predict a residual service life based on a gradient boosting decision tree algorithm and output a residual life prediction value.

[0039] wherein the input feature set comprises wherein RMS v is a root mean square of the vibration frequency spectrum signal of the bearing position of the transmission system, is a temperature rise slope of the high-pressure outlet of the oil pump system, THD I is a harmonic distortion rate of the driving current of the stepper motor system, is the change amount of the health index per unit time, and

[0040] output the remaining life prediction value wherein, μ m is the weight coefficient of the mth regression tree, h m (X) is the prediction value of the mth regression tree on the feature set X, and M is the total number of regression trees.

[0041] Compared with the prior art, the present application has the following beneficial effects:

[0042] The present application forms a mechatronic structure by integrating the transmission system, the lower housing assembly, the upper housing assembly, the beta execution system, the low distance indication assembly, the stepping motor system, the anti-propeller control system and the oil pump system, solves the problems of low speed selection accuracy of the traditional speed regulator, lagging response of the anti-propeller, dispersion of the functional components, and insufficient state feedback, improves the adaptability of the speed regulator to complex flight conditions through the collaborative work of the systems, enhances the compactness and integration of the overall structure, reduces the volume and weight, improves the reliability and maintainability, and at the same time realizes the precise control of the propeller speed, the rapid response of the anti-propeller function and the effective feedback of the key state, meets the high performance requirements of the modern flight on the speed regulator. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0044] Figure 1 is the overall structure schematic diagram of the speed regulator of the present application based on the mechatronic design technology.

[0045] In the figure: 1, transmission system; 2, lower housing assembly; 3, beta execution system; 4, low distance indication assembly; 5, stepping motor system; 6, upper housing assembly; 7, anti-propeller control system; 8, oil pump system. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not limit the present application.

[0047] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and are not intended to particularly indicate the order or sequence, nor to limit the present application, which are merely for distinguishing the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0048] The present application provides the following embodiments

[0049] Embodiment 1

[0050] The embodiment of the present application provides a speed regulator based on mechatronics design technology, as shown in the figure, comprising: Figure 1

[0051] Transmission system 1 is arranged at the input end of the speed regulator, used for connecting the engine and the speed regulator and sensing the change of engine speed, and transmitting power to the inside of the speed regulator to respond to the change of flight working condition;

[0052] Lower housing assembly 2 and upper housing assembly 6, transmission system 1 is installed on lower housing assembly 2, lower housing assembly 2 bottom is used as part of oil pump system to provide high pressure oil supply, lower housing assembly 2 top is used to connect upper housing assembly 6, upper housing assembly 6 is arranged on the top of lower housing assembly 2, used to support stepper motor system 5 and transmit stepper motor speed selection signal to the internal oil way control component of the speed regulator;

[0053] Beta execution system 3 is arranged on the side of lower housing assembly 2, connected with propeller, used to control the on-off of high pressure oil through beta valve and realize small distance stop;

[0054] Low distance indication assembly 4 is arranged on beta execution system 3, used to send signal to the aircraft console by sensing the position of beta valve;

[0055] Stepper motor system 5 is arranged on the upper part of the speed regulator, used to receive control signal to select the speed of propeller;

[0056] Reverse propeller control system 7 is arranged on the speed regulator and associated with beta execution system 3, used to start reverse propeller function when reverse propeller is needed;

[0057] Oil pump system 8 is arranged on the bottom of lower housing assembly 2 and engages with transmission system 1, used to filter engine lubricating oil and provide high pressure oil for the speed regulator system. ​

[0058] The working principle and beneficial effects of the above technical solution are as follows: the transmission system 1 is arranged at the input end, is connected with the engine and the speed regulator to sense the change of the engine speed, and transmits power to the inside of the speed regulator to respond to the change of the flight working condition; the transmission system 1 is arranged on the lower housing assembly 2, the bottom of which provides high-pressure oil supply as part of the oil pump system, and the top of which is connected with the upper housing assembly 6; the upper housing assembly 6 supports the stepping motor system 5 and transmits the speed selection signal to the internal oil path control component; the β execution system 3 is arranged at the side of the lower housing assembly 2, is connected with the propeller, controls the high-pressure oil on-off through the β valve, and realizes the small-distance stop; the low-distance indication assembly 4 is arranged on the β execution system 3, sends the signal to the aircraft control console by sensing the position of the β valve; the stepping motor system 5 is arranged at the upper part of the speed regulator, receives the control signal to select the propeller speed; the reverse propeller control system 7 is arranged on the speed regulator and is associated with the β execution system 3, and the reverse propeller function is started when the reverse propeller is needed; the oil pump system 8 is arranged at the bottom of the lower housing assembly 2, is engaged with the transmission system 1, filters the engine lubricating oil, and provides high-pressure oil for the speed regulator system; and the above components cooperatively realize the overall function of the speed regulator.

[0059] By integrating the transmission system 1, the lower housing assembly 2, the upper housing assembly 6, the β execution system 3, the low-distance indication assembly 4, the stepping motor system 5, the reverse propeller control system 7 and the oil pump system 8, a mechatronic structure is formed, the problems of low speed selection accuracy, reverse propeller response lag, dispersed functional components and insufficient state feedback of the traditional speed regulator are solved, the adaptability of the speed regulator to complex flight working conditions is improved by the cooperative work of the systems, the compactness and integration of the overall structure are enhanced, the volume and weight are reduced, the reliability and maintainability are improved, the accurate control of the propeller speed, the rapid response of the reverse propeller function and the effective feedback of the key state are realized, and the high performance requirement of the modern flight for the speed regulator is met.

[0060] Embodiment 2

[0061] On the basis of embodiment 1, the transmission system 1 comprises a centrifugal weight assembly and a valve sleeve, the centrifugal weight assembly is used for sensing the change of the engine speed, and the valve sleeve is used for converting the change of the speed into mechanical displacement and transmitting the mechanical displacement to the inside of the speed regulator;

[0062] The lower housing assembly 2 comprises a lower housing, a driven gear shaft, a positioning pin, a plug, a spring and an adjusting washer, the lower housing serves as a support carrier, the bottom of the lower housing is provided with a gear shaft hole, the driven gear shaft is installed in the gear shaft hole through a bearing, the driven gear shaft is limited in the axial direction by the positioning pin, and is used for supporting a driven gear of the oil pump system 8; the plug is sealingly installed at the oil path outlet end of the side wall of the lower housing; the spring is sleeved on the outer edge of the driven gear shaft, and the two ends of the spring are pre-tightened through the adjusting washers; and the adjusting washers are arranged between the end of the spring and the inner wall of the lower housing, and are used for adjusting the pre-tightening force of the spring.

[0063] The stepper motor system 5 comprises a stepper motor which receives control signals of the engine propeller electronic controller, drives the internal mechanism of the speed regulator to select different rotating speeds, and maintains the current selected speed position through a self-locking structure in case of failure or power failure;

[0064] The upper housing assembly 6 comprises an upper housing, a screw sleeve, a guide screw, a valve core valve cap body and a spring, the upper housing is provided with a motor mounting hole at the top and is sealingly connected with the lower housing assembly 2 at the bottom, the screw sleeve is fixed in the upper housing, the center of the screw sleeve is provided with a threaded hole, the guide screw penetrates through the threaded hole of the screw sleeve, the upper end of the guide screw is connected with the output shaft of the stepper motor system 5, and the lower end of the guide screw is connected with the valve core valve cap body, the valve core valve cap body is slidingly arranged in the oil cavity at the bottom of the upper housing, is pre-tightened at the end of the guide screw through the spring, the spring is sleeved outside the guide screw, and the two ends of the spring abut against the lower end surface of the screw sleeve and the upper end surface of the valve core valve cap body, respectively. The guide screw converts the rotating motion of the stepper motor system 5 into linear motion to drive the valve core valve cap body to switch the oil path and realize the setting of the rotating speed balance point.

[0065] The working principle and beneficial effects of the above technical scheme are as follows: in the transmission system 1, the centrifugal weight assembly senses the change of the engine rotating speed, the valve sleeve converts the change of the rotating speed into mechanical displacement and transmits the mechanical displacement to the inside of the speed regulator, in the lower housing assembly 2, the lower housing serves as a support carrier, the driven gear shaft is installed in the gear shaft hole at the bottom through a bearing and is axially limited by a positioning pin to support the driven gear of the oil pump system 8, the plug seals the oil path outlet end of the side wall of the lower housing, the spring is sleeved outside the outer edge of the driven gear shaft and is pre-tightened through adjusting washers at the two ends, the adjusting washers adjust the pre-tightening force of the spring, the stepper motor of the stepper motor system 5 receives control signals of the engine propeller electronic controller, drives the internal mechanism of the speed regulator to select different rotating speeds, and maintains the current selected speed position through a self-locking structure in case of failure or power failure, in the upper housing assembly 6, the upper housing is provided with a motor mounting hole at the top, the bottom of the upper housing is sealingly connected with the lower housing assembly 2, the screw sleeve is fixed in the upper housing, the guide screw penetrates through the threaded hole of the screw sleeve, the upper end of the guide screw is connected with the output shaft of the stepper motor system 5, and the lower end of the guide screw is connected with the valve core valve cap body, the valve core valve cap body is slidingly arranged in the oil cavity at the bottom of the upper housing, is pre-tightened at the end of the guide screw through the spring sleeved outside the guide screw, the two ends of the spring abut against the lower end surface of the screw sleeve and the upper end surface of the valve core valve cap body, respectively, the guide screw converts the rotating motion of the stepper motor system 5 into linear motion to drive the valve core valve cap body to switch the oil path and realize the setting of the rotating speed balance point;

[0066] The centrifugal weight assembly of the transmission system 1 cooperates with the valve sleeve to realize accurate conversion and transmission of speed change to mechanical displacement, providing a reliable basis for subsequent speed regulation actions. The lower housing assembly 2 is stably supported by the driven gear shaft, the spring pre-tightening force is flexibly adjusted by the adjusting washer, and the plug effectively seals, ensuring the stable operation of the oil pump system 8 and the sealing of the oil circuit, improving the adaptability and reliability of the structure. The stepping motor of the stepping motor system 5 receives electronic control signals to achieve accurate speed selection, and the self-locking structure maintains the position in case of failure or power failure, solving the problem of easy deviation of the traditional mechanical speed selection mechanism, improving the stability and safety of the speed selection. The guide screw of the upper housing assembly 6 efficiently converts rotary motion into linear motion, driving the valve core valve cap body to accurately switch the oil circuit, realizing accurate setting of the speed balance point, and overall improving the speed selection accuracy and response speed of the speed regulator, enhancing the adaptability to different flight conditions.

[0067] Embodiment 3

[0068] On the basis of embodiment 1, the beta execution system 3 includes a beta valve, a sealing ring, and a cap. The beta valve axially penetrates the actuator body, the front end is connected to the propeller pitch change mechanism through a joint bolt, the rear end is sleeved with a cap, the sealing ring is nested in the gap between the beta valve and the actuator body, and the cap is threadedly fixed to the end of the actuator body. The inside is provided with a limiting boss which is connected with the tail end of the beta valve. The axial displacement of the beta valve is controlled by the propeller pitch change, the valve core section controls the high-pressure oil through the opening and closing oil circuit hole, and the limiting section cooperates with the inside boss of the cap to realize small-distance stop.

[0069] The working principle and beneficial effects of the above technical solution are as follows: the beta valve of the beta execution system 3 axially penetrates the actuator body, the front end is connected to the propeller pitch change mechanism through a joint bolt, the rear end is sleeved with a cap, the sealing ring is nested in the gap between the beta valve and the actuator body to realize sealing, the cap is threadedly fixed to the end of the actuator body, the inside is provided with a limiting boss which is connected with the tail end of the beta valve, and the axial displacement of the beta valve is controlled by the propeller pitch change, the valve core section controls the high-pressure oil through the opening and closing oil circuit hole, and the limiting section cooperates with the inside boss of the cap to realize small-distance stop.

[0070] The beta valve of the beta execution system 3 realizes high-pressure oil through control and small-distance stop functions. The front end connected to the propeller pitch change mechanism can produce axial displacement with the change of pitch, ensuring the synchronization with the propeller action. The sealing ring effectively seals the gap between the beta valve and the actuator body, preventing high-pressure oil leakage and improving the efficiency and reliability of the hydraulic system. The limiting boss inside the cap is connected with the tail end of the beta valve, realizing accurate control of small-distance stop and avoiding the risk of excessive reduction of pitch. The overall structure integrates oil circuit control and position limiting functions, solves the problem of dispersed traditional speed regulator functional components, simplifies the structure layout, and improves the integration and operation stability of the system.

[0071] Embodiment 4

[0072] On the basis of embodiment 1, the low-pitch indicating assembly 4 comprises an electrical socket, a micro switch, a valve support, a valve bracket and a wire, the valve support is fixed to the shell of the beta execution system 3 by bolts, the front end is provided with a U-shaped clamping groove, the valve bracket is nested in the U-shaped clamping groove of the valve support, the tail end is hinged to the beta valve of the beta execution system 3 through a connecting rod, the micro switch is installed on the side wall of the valve support, the trigger rod vertically abuts against the side surface boss of the valve bracket, the electrical socket is sealingly embedded in the assembly shell and connected with the micro switch circuit through the wire. When the beta valve axially displaces, the valve bracket is driven to slide in the U-shaped clamping groove, the micro switch trigger rod is pushed to switch the circuit state, and at the same time, when the pitch of the propeller is lower than the specified small pitch angle, an electrical signal is sent to the aircraft console through the electrical socket and the wire.

[0073] The working principle and beneficial effects of the above technical solution are as follows: the valve support of the low-pitch indicating assembly 4 is fixed to the shell of the beta execution system 3 by bolts, the front end is provided with a U-shaped clamping groove, the valve bracket is nested in the U-shaped clamping groove of the valve support, the tail end is hinged to the beta valve of the beta execution system 3 through a connecting rod, the micro switch is installed on the side wall of the valve support, the trigger rod vertically abuts against the side surface boss of the valve bracket, the electrical socket is sealingly embedded in the assembly shell and connected with the micro switch circuit through the wire. When the beta valve axially displaces, the valve bracket is driven to slide in the U-shaped clamping groove, the micro switch trigger rod is pushed to switch the circuit state, and at the same time, when the pitch of the propeller is lower than the specified small pitch angle, an electrical signal is sent to the aircraft console through the electrical socket and the wire.

[0074] The low-pitch indicating assembly 4 is hinged to the beta valve through the valve bracket, can real-time feel the position change of the beta valve, the U-shaped clamping groove of the valve support provides stable sliding guide for the valve bracket, ensures the accuracy of position detection, the micro switch realizes accurate switching of the circuit state through the cooperation of the trigger rod and the boss of the valve bracket, the sealing installation of the electrical socket and the wire connection ensure the reliability of the electrical signal transmission, can timely send a signal to the aircraft console when the pitch of the propeller is lower than the specified small pitch angle, solves the problem of lack or deficiency of state feedback of the traditional speed regulator, enables the crew to real-time master the pitch state, improves the safety and controllability of flight, the overall structure design is compact, cooperates with the beta execution system 3, and enhances the state monitoring capability of the speed regulator.

[0075] Embodiment 5

[0076] On the basis of embodiment 1, the anti-thrust control system 7 includes an anti-thrust electromagnetic valve, a hinge bolt and a carbon block assembly. The anti-thrust electromagnetic valve is fixed to the governor housing through a flange, the plunger axis is coaxial with the beta valve, the carbon block assembly is embedded in the plunger end groove and is fixed radially through a locking screw, one end of the hinge bolt is hinged to the beta valve tail lug, and the other end is in spherical contact with the carbon block assembly. When the anti-thrust electromagnetic valve is powered on, the plunger pushes the carbon block assembly forward, and the beta valve is axially displaced through the hinge bolt to release the small distance limit and switch the high pressure oil circuit to realize the anti-thrust of the propeller.

[0077] The working principle and beneficial effects of the above technical solution are as follows: the anti-thrust electromagnetic valve of the anti-thrust control system 7 is fixed to the governor housing through a flange, the plunger axis is coaxial with the beta valve of the beta execution system 3, the carbon block assembly is embedded in the plunger end groove and is fixed radially through a locking screw, one end of the hinge bolt is hinged to the beta valve tail lug, and the other end is in spherical contact with the carbon block assembly. When the anti-thrust electromagnetic valve is powered on, the plunger pushes the carbon block assembly forward, and the beta valve is axially displaced through the hinge bolt to release the small distance limit and switch the high pressure oil circuit to realize the anti-thrust of the propeller;

[0078] The anti-thrust control system 7 uses an anti-thrust electromagnetic valve as the control core, controls the plunger action through an electrical signal, and has a faster response speed than traditional pure hydraulic or mechanical linkage control, solves the problem of anti-thrust response lag, improves the deceleration efficiency and safety of the aircraft during landing and taxiing, the plunger axis is coaxial with the beta valve, the carbon block assembly is in spherical contact with the hinge bolt, which ensures the coaxiality and flexibility of force transmission, reduces mechanical wear and prolongs the service life of the components, the hinge design of the hinge bolt makes the axial displacement of the beta valve more smooth, ensures the reliable release of the small distance limit and the precise switching of the high pressure oil circuit, the overall structure is closely related to the beta execution system 3, has high integration and is easy to operate, and meets the anti-thrust requirements of the aircraft in various landing scenarios.

[0079] Embodiment 6

[0080] On the basis of embodiment 1, the oil pump system 8 includes a bottom plate, a driven gear, a driven gear shaft, a sealing ring and an oil filter assembly. The bottom plate is fixed to the bottom of the lower housing assembly 2 through a positioning pin, the center of which is provided with a gear shaft hole, the driven gear shaft penetrates the bottom plate gear shaft hole, the front end is connected with the driven gear through a spline, and the rear end is supported in the bearing hole of the lower housing assembly 2. The driven gear is engaged with the driving gear of the transmission system 1, and the engagement point is located at the tangent point of the gear pair pitch circle. The sealing ring is nested in the gap between the driven gear shaft and the hole wall of the bottom plate. The oil filter assembly is detachably installed on the oil inlet of the bottom plate through a buckle structure, is used for filtering the oil from the engine, and provides a clean high pressure oil source for the governor. The filter element axis is perpendicular to the oil inlet direction.

[0081] The working principle and beneficial effects of the above technical solution are as follows: the bottom plate of the oil pump system 8 is fixed to the bottom of the lower housing assembly 2 by a positioning pin, the center of which is provided with a gear shaft hole, the driven gear shaft penetrates the gear shaft hole of the bottom plate, the front end is connected with the driven gear through a spline, and the rear end is supported in the bearing hole of the lower housing assembly 2; the driven gear is engaged with the driving gear of the transmission system 1, the engagement point is located at the tangent point of the pitch circle of the gear pair, the sealing ring is nested in the gap between the driven gear shaft and the hole wall of the bottom plate to achieve sealing, and the oil filter assembly is detachably installed on the oil inlet of the bottom plate through a buckle structure, which is used to filter the oil from the engine to provide a clean high-pressure oil source for the governor, and the filter element axis is perpendicular to the oil inlet direction;

[0082] The driven gear of the oil pump system 8 is engaged with the driving gear of the transmission system 1 at the tangent point of the pitch circle, which ensures the stability and efficiency of power transmission and reduces energy loss; the driven gear shaft is double-supported by the bottom plate and the bearing hole of the lower housing assembly 2, which improves the stability and carrying capacity of the structure; the sealing ring effectively seals the gap between the driven gear shaft and the hole wall of the bottom plate to prevent oil leakage; the oil filter assembly is detachably installed through a buckle structure, which is convenient for maintenance and replacement; the filter element axis is perpendicular to the oil inlet direction, which improves the filtering efficiency and ensures that a clean high-pressure oil source is provided for the governor, reducing component wear and failure caused by oil impurities and prolonging the service life of the governor; the overall structure cooperates with the lower housing assembly 2 and the transmission system 1 to provide reliable hydraulic power support for the normal operation of the governor.

[0083] Embodiment 7

[0084] Based on the embodiment 1, a health status self-diagnosis module is further included, which comprises:

[0085] A multi-source data acquisition and synchronization submodule is used to synchronously acquire machine-electricity-liquid multi-dimensional data of the governor in real time, and establish a working condition database with timestamp alignment, wherein the multi-dimensional data includes vibration spectrum signals of the bearing site of the transmission system 1, displacement encoding signals of the valve shaft of the β execution system 3, harmonic distortion rate of the driving current of the stepping motor system 5, and oil temperature signals of the high-pressure outlet of the oil pump system 8;

[0086] A fault feature analysis submodule is used to perform dynamic residual diagnosis and multi-scale trend analysis based on the displacement encoding signals of the valve shaft of the β execution system 3 to extract the fault feature λ(t) of the governor;

[0087] A health assessment and prediction submodule is used to calculate the comprehensive health index and predict the remaining life based on the static health indicators and dynamic health indicators generated by the dynamic residual diagnosis;

[0088] An adaptive decision and fault-tolerant control submodule is used to execute a hierarchical response strategy according to the fault level.

[0089] Specifically, the fault level is divided into four levels:

[0090] First-class fault (minor degradation): when the comprehensive health index is less than 0.8 of the reference comprehensive health index, the current compensation coefficient of the stepper motor system 5 is automatically adjusted;

[0091] Second-class fault (moderate abnormality): when the comprehensive health index is less than 0.4 of the reference comprehensive health index, the boost mode of the oil pump system 8 is started to increase the working pressure, and the standby state of the anti-propeller control system 7 is activated;

[0092] Third-class fault (serious failure): when the comprehensive health index is between 0.2 of the reference comprehensive health index and 0.4 of the reference comprehensive health index, the control right of the β execution system 3 is taken over by the anti-propeller control system 7, the propeller speed is limited to the rated value, and the aircraft control console sends a priority landing warning;

[0093] Fourth-class fault (emergency state): when the comprehensive health index is less than 0.2 of the reference comprehensive health index, the β execution system 3 is forced to enter the small-distance stop state, the high-pressure output of the oil pump system 8 is cut off, and the cockpit sound and light alarm is triggered.

[0094] The working principle and beneficial effects of the above technical solution are as follows: the multi-source data acquisition and synchronization submodule of the health state self-diagnosis module synchronously acquires the multi-dimensional data of the governor, including the vibration frequency spectrum signal of the bearing site of the transmission system 1, the displacement encoding signal of the valve shaft of the β execution system 3, the harmonic distortion rate of the driving current of the stepper motor system 5, and the oil temperature signal of the high-pressure outlet of the oil pump system 8, to establish a time stamp aligned working condition database; the fault feature analysis submodule performs dynamic residual diagnosis and multi-scale trend analysis based on the displacement encoding signal of the valve shaft of the β execution system 3 to extract the fault feature λ(t); the health evaluation and prediction submodule calculates the comprehensive health index and predicts the remaining life based on the static health index and the dynamic health index generated by the dynamic residual diagnosis; the adaptive decision and fault-tolerant control submodule executes the grading response strategy according to the fault level, wherein the fault level is divided into four levels: when the first-class fault (minor degradation) occurs, the current compensation coefficient of the stepper motor system 5 is automatically adjusted; when the second-class fault (moderate abnormality) occurs, the boost mode of the oil pump system 8 is started and the standby state of the anti-propeller control system 7 is activated; when the third-class fault (serious failure) occurs, the control right of the β execution system 3 is taken over by the anti-propeller control system 7 and a priority landing warning is sent; when the fourth-class fault (emergency state) occurs, the β execution system 3 is forced to enter the small-distance stop state and the cockpit sound and light alarm is triggered;

[0095] The health state self-diagnosis module collects key data of the transmission system 1, the β execution system 3, the stepping motor system 5 and the oil pump system 8 through the multi-source data acquisition and synchronization submodule, realizes real-time monitoring of the multi-dimensional state of the governor machine-electricity-liquid, and overcomes the defect of lack of state monitoring of the traditional governor. The fault feature analysis submodule accurately extracts fault features through dynamic residual diagnosis and multi-scale trend analysis, and provides a reliable basis for health assessment. The health assessment and prediction submodule calculates a comprehensive health index and predicts the remaining life, so that the maintenance personnel can master the equipment state in advance. The self-adaptive decision and fault-tolerant control submodule executes corresponding strategies according to the four-level fault grade, adjusts the current compensation for the first-level fault, starts the supercharging and prepares the counter-thrust for the second-level fault, takes over the control and alarms for the third-level fault, and forcibly stops for the fourth-level fault, realizes the hierarchical processing and fault-tolerant control of the fault, greatly improves the safety, reliability and maintainability of the governor, and reduces the fault risk and maintenance cost.

[0096] Embodiment 8

[0097] On the basis of embodiment 7, the fault feature analysis submodule comprises:

[0098] a dynamic residual diagnosis unit, configured to generate a residual sequence based on the displacement encoding signal of the β execution system 3 valve shaft and the actual feedback position, and calculate a static health index and a dynamic health index;

[0099] wherein the residual sequence r k = |u k -y k |; wherein u k is the kth displacement encoding signal of the β execution system 3 valve shaft, and y k is the k-1th actual feedback position signal of the β execution system 3 valve shaft;

[0100] the static health index: the dynamic health index wherein is the residual mean, N is the number of sliding window samples, and y k-1 is the k-1th actual feedback position signal of the β execution system 3 valve shaft;

[0101] a multi-scale trend analysis unit, configured to establish a degradation model of the oil pump loading period and the temperature rise slope of the high-pressure outlet of the oil pump system 8, wherein the failure rate function of the degradation model of the oil pump loading period and the temperature rise slope of the high-pressure outlet of the oil pump system 8 is: λ(t) = αe βt + γln(t + 1); wherein λ(t) is a function of the failure rate with time, α, β and γ are respectively the oil pump loading period degradation coefficient, the oil pump system 8 high-pressure outlet temperature rise slope influence factor and the governor aging coefficient, ln is the logarithm with e as the base, and t represents the cumulative running time of the governor.

[0102] The working principle and beneficial effects of the above technical solutions are: the dynamic residual diagnosis unit performs the deviation of the displacement encoding signal of the system 3 valve shaft from the actual position through residual sequence quantization β, the static health indicator reflects the long-term stability deviation of the system based on the deviation degree of the residual from the residual mean value, and the dynamic health indicator reflects the dynamic response characteristics of the system through the ratio of the adjacent position change to the residual, which comprehensively depicts the health state of the β execution system 3. The failure rate function of the multi-scale trend analysis unit fuses the oil pump loading period degradation coefficient α, the temperature rise slope influencing factor β and the aging coefficient γ, which respectively reflect the influence of the oil pump loading period, the high-pressure outlet temperature rise and the overall aging on the failure rate. The exponential term reflects the acceleration effect of the temperature rise slope with time, and the logarithmic term reflects the cumulative effect of aging. This model can accurately describe the trend of the failure rate with time, providing a scientific basis for fault early warning and improving the accuracy and comprehensiveness of fault feature extraction.

[0103] Embodiment 9

[0104] Based on embodiment 7, the health assessment and prediction sub-module comprises:

[0105] a health degree calculation unit, configured to calculate a comprehensive health index, wherein the comprehensive health index is calculated as:

[0106] wherein w1, w2 and w3 are weight coefficient one, weight coefficient two and weight coefficient three respectively, f v is the vibration frequency spectrum signal of the bearing position of the transmission system 1, f vnom is the vibration frequency spectrum reference signal of the bearing position of the transmission system 1, H smax is a preset threshold value of the static health indicator, H dmin is a preset threshold value of the dynamic health indicator;

[0107] a remaining life prediction unit, configured to predict the remaining service life based on a gradient boosting decision tree algorithm and output a remaining life prediction value;

[0108] wherein the input feature set comprises wherein RMS v is the root mean square of the vibration frequency spectrum signal of the bearing position of the transmission system 1, is the temperature rise slope of the high-pressure outlet of the oil pump system 8, THD I is the harmonic distortion rate of the driving current of the stepper motor system 5, is the comprehensive health index decline rate, i.e. the change amount of HI per unit time;

[0109] outputting the remaining life prediction value wherein μ m is the weight coefficient of the mth regression tree, hm (X) is the predicted value of the mth regression tree for the feature set X, and M is the total number of regression trees.

[0110] The working principle and beneficial effects of the technical solution are as follows: the calculation formula of the comprehensive health index HI integrates the static health indicator, the dynamic health indicator and the bearing vibration frequency spectrum signal of the transmission system 1, and the importance of each factor is reflected through the weight coefficients w1, w2 and w3, reflects the health proportion of static stability, reflects the health condition of dynamic response, characterizes the health degree of bearing vibration, and comprehensively evaluates the overall health state of the governor, the residual life prediction unit adopts the gradient boosting decision tree algorithm, the input feature set X includes RMS v , THD I , and λ(t) cover the degradation characteristics in the mechanical-electrical-liquid multi-dimensions, the weighted sum of multiple regression trees improves the accuracy and reliability of the residual life prediction, provides an accurate time basis for equipment maintenance, reduces unplanned downtime, and improves the use efficiency and economy of the governor.

[0111] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A speed regulator based on mechanical-electrical-hydraulic integrated design technology, characterized by: include: A transmission system (1) is provided at the input end of the speed regulator, and is used to connect the engine and the speed regulator and sense changes in engine speed, and transmit power to the inside of the speed regulator to respond to changes in flight conditions; A lower housing assembly (2) and an upper housing assembly (6), wherein a transmission system (1) is mounted on the lower housing assembly (2), the bottom of the lower housing assembly (2) serves as part of an oil pump system for providing high-pressure oil supply, the top of the lower housing assembly (2) is used to connect to the upper housing assembly (6), and the upper housing assembly (6) is arranged on the top of the lower housing assembly (2) for supporting the stepper motor system (5) and transmitting a stepper motor speed selection signal to an internal oil circuit control component of the speed regulator; A beta actuator system (3) is provided on the side of the lower housing assembly (2) and is connected to the propeller, and is used to control the on-off of high-pressure oil and achieve small-pitch stopping through a beta valve; A low range indication component (4) is provided on the beta execution system (3) and is used to send a signal to the aircraft control console by sensing the position of the beta valve; a stepper motor system (5), arranged on the upper portion of the speed regulator, for receiving a control signal to select a propeller speed; A reverse propeller control system (7), which is arranged on the speed governor and is associated with the beta execution system (3), and is used to start the reverse propeller function when reverse propeller is required; An oil pump system (8) is arranged at the bottom of the lower housing assembly (2) and is engaged with the transmission system (1) for filtering engine lubricating oil and providing high-pressure oil to the governor system.

2. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: The transmission system (1) comprises a centrifugal weight assembly and a valve sleeve, wherein the centrifugal weight assembly is used to sense the change in engine speed, and the valve sleeve is used to convert the change in speed into mechanical displacement and transmit it to the interior of the speed regulator.

3. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: The lower housing assembly (2) includes a lower housing, a driven gear shaft, a positioning pin, a plug, a spring and an adjusting washer. The lower housing serves as a supporting carrier, and a gear shaft hole is provided at its bottom. The driven gear shaft is installed in the gear shaft hole through a bearing. The driven gear shaft is axially limited by the positioning pin and is used to support the driven gear of the oil pump system (8). The plug is sealed and installed at the oil outlet end of the side wall of the lower housing. The spring is sleeved on the outer edge of the driven gear shaft and pre-tightened at both ends by an adjusting washer. The adjusting washer is arranged between the end of the spring and the inner wall of the lower housing to adjust the spring pre-tightening force. The stepper motor system (5) includes a stepper motor, which receives a control signal from an electronic controller of an engine propeller, drives an internal mechanism of a speed regulator to select different speeds, and maintains the current selected speed position through a self-locking structure in the event of a fault or power outage; The upper housing assembly (6) includes an upper housing, a threaded sleeve, a guide screw, a valve core valve cap body and a spring. The top of the upper housing is provided with a motor mounting hole, and the bottom is sealed and connected to the lower housing assembly (2). The threaded sleeve is fixed inside the upper housing, and a threaded hole is provided at the center thereof. The guide screw passes through the threaded hole of the threaded sleeve, and the upper end is connected to the output shaft of the stepper motor system (5), and the lower end is connected to the valve core valve cap body. The valve core valve cap body is slidably arranged in the oil chamber at the bottom of the upper housing and is pre-tightened at the end of the guide screw by a spring. The spring sleeve is arranged outside the guide screw, and the two ends respectively abut against the lower end surface of the threaded sleeve and the upper end surface of the valve core valve cap body. The guide screw converts the rotational motion of the stepper motor system (5) into linear motion, drives the valve core valve cap body to switch the oil circuit, and realizes the setting of the speed balance point.

4. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: The β actuator system (3) comprises a β valve, a sealing ring and a cap. The β valve axially penetrates the actuator body, the front end is connected to the propeller pitch changing mechanism through a movable bolt, and the rear end is sleeved with a cap. The sealing ring is nested in the matching gap between the β valve and the actuator body. The cap is threadedly fixed to the end of the actuator body, and a limiting boss is provided on the inner side to be clamped with the tail end of the β valve. The axial displacement of the β valve is controlled by the change of the propeller pitch. The valve core section controls the high-pressure oil on and off by opening and closing the oil circuit hole, and the limiting section cooperates with the boss inside the cap to realize small-pitch stopping.

5. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: The low-range indication component (4) comprises an electrical socket, a micro switch, a valve bracket, a valve support and a wire. The valve bracket is fixed to the housing of the β actuator system (3) by bolts, and a U-shaped slot is provided at its front end. The valve support is nested in the U-shaped slot of the valve bracket, and the rear end is hinged to the β valve of the β actuator system (3) through a connecting rod. The micro switch is installed on the side wall of the valve bracket, and its trigger rod vertically abuts the side boss of the valve bracket. The electrical socket is sealed and embedded in the component housing and connected to the micro switch circuit through a wire. When the β valve is axially displaced, the valve bracket is driven to slide in the U-shaped slot, pushing the micro switch trigger rod to switch the circuit state. At the same time, when the propeller pitch is lower than the specified low pitch angle, an electrical signal is sent to the aircraft control console through the electrical socket and the wire.

6. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: The reverse propeller control system (7) includes a reverse propeller solenoid valve, a movable bolt and a carbon block assembly. The reverse propeller solenoid valve is fixed to the speed regulator housing through a flange, and its plunger axis is coaxial with the β valve. The carbon block assembly is embedded in the groove at the end of the plunger and radially fixed by a locking screw. One end of the movable bolt is hinged to the tail end lug of the β valve, and the other end spherically contacts the carbon block assembly. When the reverse propeller solenoid valve is energized, the plunger pushes the carbon block assembly forward, and the β valve is pulled axially by the movable bolt to release the small pitch limit and switch the high-pressure oil circuit to realize propeller reverse propeller.

7. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: The oil pump system (8) includes a base plate, a driven gear, a driven gear shaft, a sealing ring and an oil filter assembly. The base plate is fixed to the bottom of the lower housing assembly (2) by a positioning pin, and a gear shaft hole is provided at the center thereof. The driven gear shaft passes through the base plate gear shaft hole, and the front end is connected to the driven gear by a spline, and the rear end is supported in the bearing hole of the lower housing assembly (2). The driven gear is meshed with the driving gear of the transmission system (1), and the meshing point is located at the tangent point of the gear sub-pitch circle. The sealing ring is nested in the gap between the driven gear shaft and the base plate hole wall. The oil filter assembly is detachably mounted on the base plate oil inlet through a snap-fit ​​structure, and is used to filter the lubricating oil from the engine and provide a clean high-pressure oil source for the speed regulator. The filter element axis is perpendicular to the oil inlet direction.

8. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 1, characterized in that: It also includes a health status self-diagnosis module, which includes: A multi-source data acquisition and synchronization submodule is used to synchronously acquire the multi-dimensional mechanical, electrical, and hydraulic data of the speed regulator in real time and establish a time-stamp aligned working condition database. The multi-dimensional data includes the vibration spectrum signal of the bearing of the transmission system (1), the displacement coding signal of the valve shaft of the beta actuator system (3), the harmonic distortion rate of the driving current of the stepping motor system (5), and the oil temperature signal of the high-pressure outlet of the oil pump system (8); A fault feature analysis submodule is used to extract the fault feature λ(t) of the speed regulator by performing dynamic residual diagnosis and multi-scale trend analysis based on the displacement coding signal of the valve shaft of the β actuator system (3); The health assessment and prediction submodule is used to calculate the comprehensive health index and predict the remaining lifespan based on the static health signs and dynamic health signs generated by dynamic residual diagnosis; The adaptive decision-making and fault-tolerant control submodule is used to execute a hierarchical response strategy according to the fault level.

9. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 8, characterized in that: The fault feature analysis submodule includes: a dynamic residual diagnosis unit for generating a residual sequence based on a displacement encoding signal of a valve shaft of a beta actuator system (3) and an actual feedback position, and calculating a static health flag and a dynamic health flag; Among them, the residual sequence r k =|u k -y k |; Among them, u k is the kth displacement encoding signal of the valve shaft of the β actuator system (3), y k is the kth actual feedback position signal of the valve shaft of the β actuator system (3); Static health signs: Dynamic health sign in, is the residual mean, N is the number of sliding window samples, y k-1 is the k-1th actual feedback position signal of the valve axis of the β actuator system (3); A multi-scale trend analysis unit is used to establish a degradation model of the oil pump loading cycle and the temperature rise slope of the high-pressure outlet of the oil pump system (8), wherein the failure rate function of the degradation model of the oil pump loading cycle and the temperature rise slope of the high-pressure outlet of the oil pump system (8) is: λ(t)=αe βt +γln(t+1); where λ(t) is the time function of the failure rate, α, β and γ are the oil pump loading cycle degradation coefficient, the temperature rise slope influencing factor of the high-pressure outlet of the oil pump system (8) and the governor aging coefficient, respectively, ln is the logarithm with base e, and t represents the cumulative operation time of the governor.

10. The speed regulator based on the mechanical-electrical-hydraulic integrated design technology according to claim 9, characterized in that: The health assessment and prediction submodule includes: The health calculation unit is used to calculate the comprehensive health index, wherein the comprehensive health index is calculated as follows: Among them, w1, w2 and w3 are weight coefficients 1, 2 and 3 respectively, f v is the vibration spectrum signal of the bearing of the transmission system (1), f vnom is the vibration spectrum reference signal of the bearing of the transmission system (1), H smax is the preset threshold of the static health sign, H dmin Preset thresholds for dynamic health markers; Remaining life prediction unit, used to predict the remaining service life based on the gradient boosting decision tree algorithm and output the remaining life prediction value; The input feature set includes Among them, RMS v is the root mean square of the vibration spectrum signal of the bearing of the transmission system (1), is the temperature rise slope of the high-pressure outlet of the oil pump system (8), THD I is the harmonic distortion rate of the driving current of the stepper motor system (5), is the decline rate of the comprehensive health index, that is, the change of HI per unit time; Output the remaining life prediction value Among them, μ m is the weight coefficient of the mth regression tree, h m (X) is the predicted value of the mth regression tree for the feature set X, and M is the total number of regression trees.

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