CN115694066A - Many electric intelligent electric actuator - Google Patents

Abstract

The invention discloses a multi-electric intelligent electric actuator. The invention comprises a permanent magnet synchronous motor with a rotary transformer, wherein the rotary transformer, the permanent magnet synchronous motor and a planetary roller screw pair are coaxially connected and arranged on a supporting protection shell, a nut of the planetary roller screw pair is connected with a guide cylinder through a bolt, and the guide cylinder is fixedly connected with a linear displacement sensor; an electronic controller is installed in the supporting protection shell, the electronic controller is connected with the permanent magnet synchronous motor and the linear displacement sensor, and the electronic controller is connected with an electrical interface. The invention adopts the permanent magnet synchronous motor to drive the planetary roller screw pair to rotate to replace the traditional mechanical hydraulic actuator cylinder, and adopts closed-loop control of the rotating speed, the current and the position to the permanent magnet synchronous motor (with a rotary transformer) and the planetary roller screw pair in order to improve the control precision.

Description

Many electric intelligent electric actuator

Technical Field

The invention relates to the technical field of multi-electric intelligent control systems of gas turbines (gas turbines for short), in particular to a multi-electric intelligent electric actuator with integrated innovative design of an electronic controller, a permanent magnet synchronous motor, a planetary roller screw pair and a linear displacement sensor.

Background

A multi-electrical intelligent control system of an advanced combustion engine adopts Artificial Intelligence (AI), a full-authority digital electronic control system (FADEC), a Permanent Magnet Synchronous Motor (PMSM), and almost overcomes all the defects of a mechanical hydraulic control system and an analog electronic control system. The multi-electric intelligent control system adopts an artificial intelligence technology, simulates the thinking process and the intelligent behavior of a human, complies with the design idea of function dispersion, adopts a layered structure, transfers low-level processing functions in the multi-electric intelligent control system, such as most of control, monitoring, feedback functions and calculation tasks, from a central intelligent controller of the multi-electric intelligent control system to a field intelligent sensor and an intelligent execution mechanism, and only executes high-level functions, such as manual instructions, complex control algorithms, model calculation, command transmission and the like. The multi-electric intelligent control system mainly comprises an input part (manually given command signals, a health management intelligent system and the like), a central intelligent controller (a digital electronic control cabinet), a multi-electric intelligent electric actuator, an intelligent sensor, an intelligent fuel oil control device, a power bus, a data bus and the like. The central intelligent controller, the intelligent electronic controller and the power bus become important input control ends of the multi-electric intelligent control system, and the output ends are mainly concentrated on the multi-electric intelligent electric actuator.

At present, most of domestic electric actuators of advanced aero-engines and gas turbines adopt electro-hydraulic servo valves as driving execution mechanisms. However, the electro-hydraulic servo valve needs a high-pressure oil source, is easy to generate 'zero drift' and 'temperature drift', and has the problems of low metering precision at a small position, large internal leakage and the like. Under the condition that the control precision of the electric actuator is high, the electro-hydraulic servo valve is not an ideal driving execution mechanism and cannot well adapt to the requirement of environmental change. An electric actuator driven by a stepping motor is adopted to replace the traditional mechanical hydraulic electric actuator. In order to improve the control accuracy, the stepping motor is closed-loop controlled. However, the stepping motor is easy to step out, and compared with a permanent magnet synchronous motor, under the same torque condition, the stepping motor has larger volume and mass and complex processing technology, and meanwhile, the static positioning torque is difficult to reach half of the rated torque, so that the position accurate control of a multi-electric intelligent electric actuator cannot be met.

At present, domestic permanent magnet synchronous motors are not applied to electric actuators. In a series of research and development processes such as electric actuator design, simulation modeling, control rule research, test verification and the like, practical application experience and technology of the permanent magnet synchronous motor are lacked.

Disclosure of Invention

The present invention is directed to a multi-power intelligent electric actuator that overcomes at least one of the problems of the prior art. The invention can meet the accurate control requirement of a certain ship gas turbine multi-electric intelligent control system, and has the advantages of simple structure, reliable operation, high efficiency, energy saving, high control accuracy, long service life and the like.

The invention adopts the following technical scheme to realize the purpose of the invention:

a multi-electric intelligent electric actuator comprises a permanent magnet synchronous motor with a rotary transformer, wherein the rotary transformer, the permanent magnet synchronous motor and a planetary roller screw pair are coaxially connected and arranged on a supporting protection shell, a nut of the planetary roller screw pair is connected with a guide cylinder through a bolt, and the guide cylinder is fixedly connected with a linear displacement sensor; an electronic controller is installed in the supporting and protecting shell, the electronic controller is connected with the permanent magnet synchronous motor and the linear displacement sensor, and the electronic controller is connected with an electrical interface.

In the foregoing multi-electric intelligent electric actuator, the permanent magnet synchronous motor is connected with the supporting protection casing through the positioning cover plate.

In the multi-electric intelligent electric actuator, the permanent magnet synchronous motor is connected with the planetary roller screw pair through a bidirectional thrust ball bearing.

In the multi-electric intelligent electric actuator, the planetary roller screw pair is connected with the limiting block.

In the foregoing multi-electric intelligent electric actuator, the linear displacement sensor is connected to the rod end knuckle bearing.

Advantageous effects

Compared with the prior art, the permanent magnet synchronous motor is adopted to drive the planetary roller screw pair to rotate to replace the traditional mechanical hydraulic actuator cylinder, and in order to improve the control precision, the permanent magnet synchronous motor (with a rotary transformer) and the planetary roller screw pair are subjected to closed-loop control of the rotating speed, the current and the position. According to the control mode, a multi-electric (four-electric-electronic controller, a permanent magnet synchronous motor, a rotary transformer and a linear displacement sensor) intelligent electric actuator is ingeniously and newly designed, and the innovation points technically realized break through as follows:

firstly, the mechanical hydraulic actuator is innovatively designed into a multi-electric intelligent electric actuator. The permanent magnet synchronous motor replaces a traditional electro-hydraulic servo valve to serve as a driving execution mechanism, five units, namely an electronic controller, the permanent magnet synchronous motor, a rotary transformer, a planetary roller screw pair and a linear displacement sensor, are ingeniously designed into a whole and are directly assembled in a shell of a multi-electric intelligent electric actuator, the three units, namely the permanent magnet synchronous motor, the rotary transformer and the planetary roller screw pair, coaxially rotate, and real-time feedback and closed-loop control of the rotating speed and the position are achieved. And the middle part of the device is not provided with a rack speed reducing mechanism, a connecting piece and a flexible coupling piece, so that the accumulated error is reduced, and the control precision and reliability are improved.

And the other is to adopt an electronic controller and a permanent magnet synchronous motor as a position controller of the electric actuator. The rotating speed of the planetary roller screw pair is directly controlled by the permanent magnet synchronous motor, the rotating motion is converted into linear motion by the planetary roller screw pair, the control of axial displacement is realized, and the position feedback of the electric actuator of the linear displacement sensor is adopted, so that the accurate position control of the electric actuator of the multi-electric intelligent electric actuator is realized.

The multi-electric intelligent electric actuator provided by the invention realizes parametric design and manufacture of the multi-electric intelligent electric actuator through three-dimensional modeling, calculation and simulation, two-dimensional drawing and test verification, and tests prove that the permanent magnet synchronous motor is feasible to be used as a driving execution mechanism in mechanical adjustment of the electric actuator, the requirement on accurate position control of the multi-electric intelligent electric actuator of a certain ship gas turbine is met, the multi-electric intelligent electric actuator has the characteristics of simple structure, high efficiency, reliable operation, convenience for microcomputer control and the like, and the key technical blank of directly controlling the guide vane angle by using an electronic controller and the permanent magnet synchronous motor as driving execution control mechanisms is filled.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic three-dimensional structure diagram of a multi-electrical intelligent electric actuator provided by the present invention;

FIG. 2 is an exploded view of a multi-power smart power actuator according to the present invention;

FIG. 3 is a system block diagram of a multi-power smart power actuator according to the present invention;

FIG. 4 is a control block diagram of an electronic controller provided by the present invention;

FIG. 5 is a schematic block diagram of a multi-power intelligent electric actuator according to the present invention;

the reference signs are: the device comprises a permanent magnet synchronous motor (with a rotary transformer), a positioning cover plate 2, a bidirectional thrust ball bearing 3, a limiting block 4, a planetary roller screw pair 5, a guide cylinder 6, a supporting and protecting shell 7, an electronic controller 8, an electrical interface 9, a cover plate 10, a linear displacement sensor 11 and a rod end joint bearing 12.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, but are not taken as a basis for limiting the present invention.

Examples are given. A multi-electric intelligent electric actuator is shown in figure 1 and comprises an electronic controller 8, a permanent magnet synchronous motor 1, a rotary transformer, a planetary roller screw pair 5 and a linear displacement sensor 11, and the electronic controller, the permanent magnet synchronous motor, the rotary transformer, the planetary roller screw pair and the linear displacement sensor are integrated in a supporting and protecting shell 7 of the multi-electric intelligent electric actuator. The circuit printed board, the electronic components, the chip and the electrical interface are integrated in the electronic controller 8 and are arranged on the upper half part of the supporting and protecting shell 7 of the intelligent electric actuator, the software of the electronic controller is sintered in the chip of the electronic controller 8 through an external computer, and the electrical interface is communicated through a CAN data bus and receives and feeds back a position control signal given by the central intelligent controller of the gas turbine. The permanent magnet synchronous motor 1, the rotary transformer and the planetary roller screw pair 11 are coaxially connected and integrally assembled on the lower half part of the support protection shell 7 of the multi-electric intelligent electric actuator, an electrical interface 9 receives and feeds back input current and excitation current control signals of the multi-electric intelligent electric actuator, and a mechanical interface is connected with a guide vane of a gas turbine through a rod end joint bearing 12.

As shown in fig. 2, the multi-electric-intelligent electric actuator is structurally designed to be composed of a permanent magnet synchronous motor (with a rotary transformer) 1, a positioning cover plate 2, a bidirectional thrust ball bearing 3, a limiting block 4, a planetary roller screw pair 5, a guide cylinder 6, a supporting shell 7, an electronic controller 8, an electrical interface 9, a cover plate 10, a linear displacement sensor 11, a rod end joint bearing 12 and the like.

As shown in fig. 3, the electronic controller 8 is configured by a printed circuit board, electronic components, a chip cable bus, and an "input signal processing module, a power supply module, a core control module DSP, a motor driving main circuit, a current feedback processing module, a rotational speed feedback processing module, and a position feedback processing module" that are integrated by an air plug.

The structure of the multi-electric intelligent electric actuator is characterized in that a central intelligent controller is connected with an electric interface 9 of the multi-electric intelligent electric actuator through a power bus and a data bus so as to realize the communication and electrification of an electronic controller 8. An electronic controller board 8 is fixed by screws in the upper cavity half of the support housing 7. The electronic controller penetrates through the supporting shell 7 through a wire harness electrical interface to be connected with the permanent magnet synchronous motor 1 and an electrical interface of the linear displacement sensor 11, sends an instruction signal to the permanent magnet synchronous motor 1, and receives a feedback signal of the rotary transformer integrated in the permanent magnet synchronous motor and the linear displacement sensor 11. In order to facilitate the assembly of the permanent magnet synchronous motor 1 and the support shell 7 and the wire harness of the linear displacement sensor 11 penetrating through the support shell 7, the positioning cover plate 2 is respectively installed with the permanent magnet synchronous motor 1 and the support shell 7. The permanent magnet is connected with the screw rod of the motor 1 and the planetary roller screw pair 5 through a flat key, so that accumulated errors are reduced, control precision and reliability are improved, and the bidirectional thrust ball bearing 3 is selected to bear axial force at the screw rod connection position of the permanent magnet synchronous motor 1 and the planetary roller screw pair 5 due to the fact that the axial force needs to be borne. The nut of the planetary roller screw pair 5 is connected with the guide cylinder 6 through a bolt, the guide cylinder 6 and the linear displacement sensor 11 are fixed through screws, and the guide cylinder 6 and the linear displacement sensor 11 move synchronously in the axial movement process, so that the real-time performance of position feedback is guaranteed. The guide cylinder 6 is connected with the guide vane through a rod end joint bearing 12 to realize the control of the guide vane. The limiting block 4 is used for adjusting the initial installation position of the planetary roller screw pair 5. The cover plate 10 is used to protect all components of the electronic controller 8.

The functional requirements of the components of the invention, the modules and the functional specifics used to implement the corresponding functions are as follows:

1. electronic controller 8 function

CAN communication function.

Function implementation module: a power supply module; a CAN communication interface; CAN communication circuit.

Functional characteristics: (1) 1.8VDC, 3.3VDC, ± 5VDC, ± 15VDC power supply and power supply monitoring protection;

(2) The communication Baud rate is not lower than 115200;

(3) The control current signal is 4 mA-20 mA.

2. And the electronic controller 8 receives a position control signal of the central intelligent controller of the gas turbine through a CAN data bus, converts a given position control instruction into a rotating speed control signal, drives and controls the permanent magnet synchronous motor 1 and the planetary roller screw pair 5 to operate at corresponding rotating speeds, and further controls the position of the electric actuator. Meanwhile, the rotary transformer collects current and rotating speed of the permanent magnet synchronous motor 1 and position signals of the guide cylinder 6, feeds the signals back to the electronic controller 8, calculates deviation of the feedback signals and given signals, corrects the rotating speed of the permanent magnet synchronous motor 1 according to a calculation result, and achieves a closed-loop control function of the moving position of the electric actuator.

The function realizing module: an input signal processing module; a rotating speed feedback processing module; a position feedback processing module; a core control module DSP; the motor drives the main circuit.

Functional characteristics: (1) driving power supply input voltage 380VAC, 50HZ;

(2) Controlling the power supply input voltage to be 24VDC and not more than 5A;

(3) A vector control method is adopted in a position loop, rotating speed loop and current loop closed-loop control strategy;

the back emf is sinusoidal. The software adopts a standard C language (GJB 8114);

(4) Under the condition of carrying, wherein the step size is 25mm, and the adjusting time is not more than 0.28s;

3. the electronic controller 8 has the functions of analog quantity and discrete quantity acquisition, operation, processing and output.

Function implementation module: an input signal processing module; a rotating speed feedback processing module; a position feedback processing module; a current feedback processing module; a temperature feedback processing module; and a core control module DSP.

Functional characteristics: (1) Collecting +24V, +5V, +15V, -15V voltage values, and carrying out corresponding processing;

(2) And excitation signals are provided for the rotating speed, position, pressure and temperature sensors, and feedback signals of the sensors are acquired and processed correspondingly.

4. And the electronic controller 8BIT self-checking storage function.

Function implementation module: a power supply monitoring circuit; a fault detection circuit; and a core control module DSP.

Functional characteristics: and (4) electrifying self-checking, judging communication faults, current faults, 380VAC undervoltage, motor overload, sensor faults, power tube short circuit, open circuit, load disconnection and other faults, and if the faults exist, closing all bridge arm driving signals, storing and alarming.

5. The electronic controller 8 has a manual reset function.

Function implementation module: a core control module DSP; a reset circuit.

Functional characteristics: and when the manual reset is carried out, the output of all bridge arm control signals is closed.

2. Rotation and feedback functions of permanent magnet synchronous motor 1

1. When current is introduced into a stator winding of the permanent magnet synchronous motor 1, a rotating magnetic field is generated in the stator winding, and at the moment, the rotor provided with the permanent magnets synchronously rotates under the action of the stator rotating magnetic field, so that the rotor shaft drives the planetary roller screw pair 5 to synchronously rotate.

Function implementation module: permanent magnet synchronous motor 1 planet roller screw pair 5

Functional characteristics: and (1) a power supply 380VAC and 50HZ.

(2) Rated power is less than or equal to 5KW.

(3) The dragging force of the actuating cylinder is not less than 6000N.

2. Permanent magnet synchronous motor 1 is in full operating speed within range, and the rotational speed is all adjustable speed, directly drives the vice 5 rotations of planet roller lead screw, and when the vice 5 arrival assigned position of planet roller lead screw, permanent magnet synchronous motor 1 rotating position is fixed, realizes the accurate control of electric actuator position.

Function implementation module: permanent magnet synchronous motor 1 planet roller screw pair 5

Functional characteristics: (1) when the stroke of the actuating cylinder is 100mm +/-1 mm;

(2) The whole-course movement time is not more than 1s;

(3) The rotating speed measuring range (0-1600) r/min of the electric actuator.

3. The angle and the speed position of the permanent magnet synchronous motor 1 are calibrated by adopting a rotary transformer, and the collected angle signal and speed signal are fed back to the electronic controller 8, so that the closed-loop control of the electric actuator is realized.

Function implementation module: permanent magnet synchronous motor 1 rotary transformer

Functional characteristics: (1) when the stroke of the actuating cylinder is 100mm +/-1 mm;

(2) The electric error of the electric actuator is not more than +/-10'.

3. Planetary roller screw displacement and feedback function

1. In order to enable the specific relation between the rotation angle and the output position of a given permanent magnet synchronous motor 1, a planetary roller screw pair 5 is designed, and the rotation angle of the permanent magnet synchronous motor 1 is converted into an axial position through the internal structure of the planetary roller screw pair 5 to be output

Function implementation module: planetary roller screw

Functional characteristics: (1) the stroke of the actuating cylinder is 100mm +/-1 mm;

(2) The whole-course movement time is not more than 1s;

(3) Position control accuracy (X4): not more than +/-0.1 mm.

2. The guide cylinder 6 is connected with the nut of the planetary roller screw pair 5, the displacement of the nut is transmitted to the rod end joint bearing 12, the guide vane is pushed through the rod end joint bearing 12, and the control of the guide vane is realized.

Function implementation module: a planetary roller screw; a guide cylinder 6; rod end oscillating bearing 12

Functional characteristics: the dragging force of the actuating cylinder is not less than 6000N;

(2) The stroke of the actuating cylinder is 100mm plus or minus 1mm;

3. the linear displacement sensor 11 is connected with the guide cylinder 6. And the linear displacement sensor 11 feeds back the acquired position signal to the electronic controller 8 to calibrate the position of the electric actuator guide cylinder 6 so as to accurately calibrate in the full position range.

Function implementation module: a guide cylinder 6; linear displacement sensor 11

Functional characteristics: (1) The position measurement range (0-101) mm of the electric actuator;

(2) The position measurement accuracy of the electric actuator is plus or minus 0.1 percent FS;

4. failure mode reset function

The function realizing module: when the failure cannot continue to operate, the device should be able to remain free, allowing it to reach the extended state by the force of the airflow.

The function realizing module: the rod end knuckle bearing 12 is a planetary roller screw.

Functional characteristics: the airflow dragging force is not less than 1500N, and the direction of the airflow dragging force is the extending direction of the actuator.

The working principle of the multi-electric intelligent electric actuator composed of the components is as follows: the innovative design of the working principle structure of the multi-electric intelligent electric actuator is shown in figure 5: the electronic controller 8 receives a (4-20) mA position control signal given by a central intelligent controller of the combustion engine through CAN data bus communication, and drives and controls the working state of the permanent magnet synchronous motor 1 through the processing calculation of the electronic controller 8. The permanent magnet synchronous motor 1 makes corresponding rotary motion according to the instruction requirement, and drives a screw rod of the planetary roller screw rod pair 5 to rotate through a flat key. The planetary roller screw pair 5 converts the rotary motion into the axial linear motion of the nut. The planetary roller screw pair 5 is connected with a guide sleeve through a fastening screw, and the guide sleeve is connected with a guide vane of the gas turbine through a rod end joint bearing 12. Therefore, the mA position control command of (4-20) requires the rod end joint bearing 12 to complete the linear motion of 'uniform acceleration-uniform velocity-uniform deceleration', thereby reaching the command control requirement of the central intelligent controller of the combustion engine and promoting the guide vane of the combustion engine to reach the specified angle. Under the condition of power failure, namely when no power supply is input into the multi-electric intelligent electric actuator, the multi-electric intelligent electric actuator can be kept in a free state, the guide cylinder 6 receives airflow force transmitted by the guide vane of the gas turbine through the rod end joint bearing 12, the planetary roller screw pair 5 is promoted to convert axial linear motion into rotary motion, the multi-electric intelligent electric actuator is driven to reach the maximum position, and the safety requirement of a host is met.

Specifically, the working principle of the electronic controller 8 is designed as follows: the electronic controller 8 is connected with a driving and control power supply voltage, the power supply module receives a control power supply voltage signal to be electrified through CAN data bus communication, receives a given 4-20 mA position control signal from a central intelligent controller of the gas turbine through the signal processing module, transmits the signal to the core control module DSP, transmits an instruction signal to the permanent magnet synchronous motor 1 through the motor driving main circuit through operation, drives and controls the permanent magnet synchronous motor 1 to rotate to a proper position, and keeps the position. At this time, the permanent magnet synchronous motor 1 converts the rotating mechanical signal into an analog current signal through the rotary transformer, feeds the analog current signal back to the processing module through the electronic controller 8, feeds the current signal back to the core control module DSP, compares and calculates the current signal, and monitors whether the current signal is abnormal in real time to realize current closed-loop control. Because the control itself may have errors, the rotor of the permanent magnet synchronous motor 1 is provided with the rotary transformer, so that the real-time rotating speed of the permanent magnet synchronous motor 1 can be acquired in the rotating process of the permanent magnet synchronous motor 1, the deflection position of the motor can be acquired when the permanent magnet synchronous motor 1 keeps the position, signals are fed back to the core control module DSP through the rotating speed feedback processing module for comparison and calculation, the deflection position of the permanent magnet synchronous motor 1 is corrected, and the rotating speed closed loop is realized. Meanwhile, the linear displacement sensor 11 (LVDT) is installed on the rod end joint of the multi-electric intelligent electric actuator, and the moving position of the rod end joint bearing 12 can be directly read, so that the LVDT can collect displacement signals in real time, the displacement signals are fed back to the DSP (digital signal processor) of the core control module through the position feedback processing module of the electronic controller 8, comparison and calculation are carried out, the deflection position of the permanent magnet synchronous motor 1 is corrected, the moving position of the rod end joint bearing 12 is corrected, and closed-loop control of the guide vane position of the combustion engine is realized.

The working principle of the permanent magnet synchronous motor 1 is designed as follows: after the stator winding of the permanent magnet synchronous motor 1 is connected with a command current signal of the electronic controller 8, the stator winding simultaneously generates a rotating magnetic field, at the moment, the rotor provided with the permanent magnet synchronously rotates under the action of the stator rotating magnetic field, so that the rotor shaft of the permanent magnet synchronous motor 1 drives the rotary transformer and the planetary roller screw pair 5 to synchronously rotate, and the screw nut drives the guide cylinder 6 to axially move. During the rotation work of the permanent magnet synchronous motor 1 and the planetary roller screw pair 5, the rotary transformer detects the rotation speed of the permanent magnet synchronous motor 1 in real time, a rotation speed signal is fed back to the electronic controller 8 through the conversion processing circuit, the feedback and processor module of the electronic controller 8 carries out deviation calculation on the feedback rotation speed signal and a given rotation speed signal, the rotation speed of the permanent magnet synchronous motor 1 is regulated in a stepless mode according to the calculation result, and the axial position of the planetary roller screw pair 5 is controlled at the same time.

The working principle of the planetary roller screw pair 5 is designed as follows: when the rotor shaft of the permanent magnet synchronous motor 1 drives the planetary roller screw pair 5 to rotate, the screw rod in the planetary roller screw pair 5 drives the rollers in the planetary roller screw pair 5 to perform planetary motion (namely, the rollers rotate around the screw rod main shaft at the same time), because the helix angles of the rollers and the nuts in the planetary roller screw pair 5 are the same, but the rotation directions of the nut helix and the roller helix are opposite, and the straight teeth of the rollers are meshed with the straight teeth of the inner gear ring installed in the nuts, the relative motion between the rollers is ensured to be pure rolling, the rollers are supported, and the sliding of the rollers relative to the nuts is inhibited. The planetary motion of the roller relative to the screw rod generates axial relative displacement through the screw transmission between the roller and the screw rod, so that the roller drives the nut to realize the linear movement of the nut. However, the nut in the planetary roller screw pair 5 still has the freedom degree of rotation along the circumferential direction, the nut is connected with the guide cylinder 6 of the electric actuator to transfer linear thrust, and the guide cylinder 6 and the supporting protection shell 7 adopt limiting devices, so that the electric actuator can only generate axial displacement, and the angle closed-loop control of the guide vane of the combustion engine is realized.

When the multi-electric intelligent electric actuator composed of the components is implemented, the following steps are carried out:

1. three-dimensional modeling and electronics assembly

According to design input such as 'architecture and working principle design scheme' of the multi-electric intelligent electric actuator, the overall structure and working principle structure diagram of the invention are skillfully laid out, as shown in fig. 1, 2 and 5. According to the overall architecture and the working principle structure diagram and the like, three-dimensional structure patterns such as an electronic controller 8, a permanent magnet synchronous motor 1, a planetary roller screw pair 5, a linear displacement sensor 11 and the like are innovatively designed. The three-dimensional structure pattern is subjected to three-dimensional modeling, and a three-dimensional model of a multi-electric intelligent electric actuator is ingeniously and newly designed, as shown in figure 1. Then the three-dimensional solid models are assembled together according to the requirements of related structures, sizes and form and position tolerances, as shown in figure 1, and are verified through computer electronic assembly, and the phenomena of interference and the like are not generated.

2. Computing and simulation

According to design input such as 'architecture and working principle design scheme' of the multi-electric intelligent electric actuator, a mathematical model is established for unit bodies such as 'an electronic controller 8, a permanent magnet synchronous motor 1, a planetary roller screw pair 5, a linear displacement sensor 11 and a supporting shell', detailed calculation is carried out, and a calculation result meets the design input requirement.

According to the three-dimensional entity model and relevant technical indexes of the multi-electric intelligent electric actuator, a three-dimensional finite element full-period analysis model of the multi-electric intelligent electric actuator is established, simulation of structural strength, dynamics and the like is performed through an ANSYS analysis software and a physical field simulation platform, and the simulation result meets the design input requirement.

3. Two-dimensional drawing

Through the verification of the calculation and simulation of the three-dimensional physical model, a designer finally determines the three-dimensional physical model of the multi-electric intelligent electric actuator, as shown in fig. 1. And (2) generating a two-dimensional design pattern by using UG three-dimensional modeling software according to the three-dimensional physical model shown in the figure 1, marking relevant requirements on the two-dimensional design pattern according to the relevant geometric tolerance, dimensional tolerance and surface quality requirements, performing proofreading, auditing, marking and examining of the two-dimensional design pattern, performing process and quality countersigning and approving, and finally forming a correct and effective two-dimensional design pattern of the multi-electrical intelligent electric actuator.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (5)

1. A many electric actuator of electric intelligence which characterized in that: the device comprises a permanent magnet synchronous motor (1) with a rotary transformer, wherein the rotary transformer, the permanent magnet synchronous motor (1) and a planetary roller screw pair (5) are coaxially connected and are arranged on a supporting protective shell (7), a nut of the planetary roller screw pair (5) is connected with a guide cylinder (6) through a bolt, and the guide cylinder (6) is fixedly connected with a linear displacement sensor (11); an electronic controller (8) is installed in the supporting protection shell (7), the electronic controller (8) is connected with the permanent magnet synchronous motor (1) and the linear displacement sensor (11), and the electronic controller (8) is connected with the electrical interface (9).

2. The multi-electric smart power actuator of claim 1, wherein: the permanent magnet synchronous motor (1) is connected with and supports the protective shell (7) through the positioning cover plate (2).

3. The multi-electric smart power actuator of claim 1, wherein: the permanent magnet synchronous motor (1) is connected with the planetary roller screw pair (5) through a bidirectional thrust ball bearing (3).

4. The multi-electric smart power actuator of claim 1, wherein: the planetary roller screw pair (5) is connected with the limiting block (4).

5. The multi-electric smart power actuator of claim 1, wherein: the linear displacement sensor (11) is connected with a rod end joint bearing (12).

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