Electromagnetic steering engine load simulation device
Through the electromagnetic servo load simulation device, the electromagnetic field is used to generate magnetic attraction to realize the simulation of any continuous load on the servo output shaft, solving the problem that mechanical load simulation devices are difficult to simulate any continuous load, and real testing of the performance of the servo system is achieved.
Patent Information
- Application Number
- CN202411684086.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-04-11
AI Technical Summary
Existing servo load simulation devices mostly adopt mechanical principles, making it difficult to simulate any continuous load, resulting in a gradient in the load load, and it is impossible to effectively test the load carried by the servo during actual flight.
The electromagnetic servo load simulation device is adopted, through the combination of coil, control measurement module, rotating shaft, dynamic magnetic core and static magnetic core, the electromagnetic field is used to magnetize the dynamic magnetic core and generate magnetic attraction static magnetic core, generating friction force to apply friction torque load on the output shaft of the servo to be measured.
The servo output shaft is simulated by any continuous load, which can accurately simulate the load carried by the servo during flight, thereby obtaining the true performance of the servo system through semi-physical simulation tests.
Smart Images
Figure CN119803977A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of steering gear system testing, and in particular relates to a steering gear load simulation device. Background Art
[0002] As the actuator of the aircraft, the servo system is an important part of the closed-loop control of the aircraft. The performance of the servo directly affects the performance of the aircraft. Therefore, in order to better ensure the functions and indicators of the servo, it is necessary to conduct semi-physical simulation tests on the servo system on the ground. At present, semi-physical simulation plays an important role in the development of aircraft and its subsystems, and the load simulation device is an important equipment used in semi-physical simulation, which is used to simulate the load carried by the servo during the actual flight process.
[0003] At present, most of the servo load simulation devices adopt mechanical principles, and the servo torque is loaded by actively or passively adjusting the load simulation device. Although the mechanical load simulation device has a simple structure, it needs to manually adjust the mechanical structure for load loading, resulting in a gradient in load loading, that is, it is difficult to simulate any continuous load. Summary of the invention
[0004] The purpose of the present invention is to provide an electromagnetic steering gear load simulation device in view of the deficiencies in the prior art.
[0005] The technical solution of the present invention is: an electromagnetic steering gear load simulation device, comprising: a coil, a control and measurement module, a rotating shaft, a moving magnetic core, a moving magnetic core shell, a moving magnetic core cover, a static magnetic core, a locking nut, an angular contact ball bearing and a static magnetic core shell.
[0006] The rotating shaft is installed at the center of the moving magnetic core shell, and the upper end face of the rotating shaft is connected to the control and measurement module; the lower end face of the moving magnetic core shell is provided with an annular cavity, and the moving magnetic core wound with a coil is installed in the annular cavity and fastened by the moving magnetic core cover plate.
[0007] The locking nut locks the rotating shaft and the moving magnetic core housing. The lower end of the rotating shaft passes through the static magnetic core housing. The static magnetic core is installed in the static magnetic core housing. An angular contact ball bearing is arranged between the static magnetic core and the rotating shaft.
[0008] During the test, the static magnetic core shell is clamped by the tooling, and the lower end of the rotating shaft is tightly connected to the output shaft of the servo to be tested. The coil is powered by the control and measurement module by connecting to the external control terminal to generate an electromagnetic field. The moving magnetic core is magnetized by the electromagnetic field to generate magnetic attraction to the static magnetic core, so that the lower end face of the moving magnetic core and the upper end face of the static magnetic core contact due to the magnetic force, thereby generating friction force, thereby generating a friction torque load on the output shaft of the servo to be tested.
[0009] In the above scheme, specifically, the moving magnetic core shell is made of stainless steel material and has a cylindrical shape. A cylindrical stepped hole is milled on the upper end face for installing the control and measurement module; a threaded cylindrical hole for installing the rotating shaft is milled at the center of the lower end face of the moving magnetic core shell, and the threaded cylindrical hole is communicated with the cylindrical stepped hole milled on the upper end face; an annular cavity for installing the moving magnetic core is milled on the lower end face of the moving magnetic core shell; the rotating shaft is threadedly connected to the threaded cylindrical hole of the moving magnetic core shell, and the moving magnetic core is threadedly connected to the annular hole of the moving magnetic core shell.
[0010] In the above solution, specifically, the moving magnetic core is made of ferromagnetic wear-resistant metal material, and its shape is a circular cylinder; the lower end surface of the moving magnetic core is processed to increase its friction coefficient.
[0011] In the above scheme, specifically, the moving magnetic core cover plate is made of stainless steel and is shaped as a ring-shaped thin plate. It is connected through an external thread and an internal thread on the inner surface of the outer circular shell of the moving magnetic core shell to fasten the coil in a closed cavity; the moving magnetic core passes through the inner hole of the moving magnetic core cover plate and protrudes from the lower end surface of the moving magnetic core cover plate.
[0012] In the above scheme, specifically, the static magnetic core shell material is stainless steel, a cylindrical groove is milled on the upper end surface for installing the static magnetic core, and a through hole is milled in the center for passing the rotating shaft; 6 through holes are provided along the circumferential direction on the bottom surface of the cylindrical groove of the static magnetic core shell for fastening the static magnetic core.
[0013] In the above scheme, specifically, the static magnetic core material is a ferromagnetic wear-resistant metal material, which is in the shape of a circular column and is installed in the cylindrical groove of the static magnetic core shell. Its lower end face is provided with 6 countersunk threaded holes along the circumferential direction, and the static magnetic core is fastened in the cylindrical groove of the static magnetic core shell by 6 countersunk screws; the upper end face of the static magnetic core is processed to increase the friction coefficient.
[0014] In the above solution, specifically, the outer ring of the angular contact ball bearing is installed in the inner cylindrical hole of the static magnetic core by interference fit, and the upper end surface of the angular contact ball bearing is lower than the upper end surface of the static magnetic core.
[0015] The rotating shaft is made of stainless steel, with an inner hexagon structure at the lower end for connecting to the output shaft of the servo to be tested, and an outer thread at the other end for connecting to the moving magnetic core housing; the rotating shaft passes through the lower end face of the angular contact ball bearing and has an interference fit with the inner ring of the angular contact ball bearing; the lower end face of the angular contact ball bearing presses against the shoulder end face of the rotating shaft for axial positioning.
[0016] The locking nut is screwed in from the threaded side of the shaft; the shaft is connected through the external thread and the internal thread of the inner ring protrusion structure of the moving magnetic core shell, and its upper end face presses against the stepped hole in the center of the moving magnetic core shell, and the locking nut is tightened to lock the shaft and the moving magnetic core shell.
[0017] In the above scheme, specifically, the control and measurement module is connected to the coil; a torque measuring instrument is designed inside the control and measurement module to measure the friction torque of the shaft; the control and measurement module is externally connected to a control terminal, which provides power and displays the measured shaft torque.
[0018] Beneficial effects:
[0019] (1) The present invention fixes the entire measuring device by clamping the outer surface of the static magnetic core shell with a tool, and connects the output shaft of the servo to be measured through one end of the internal hexagonal structure of the rotating shaft. By connecting the external control terminal to the control and measurement module to generate an electromagnetic field, the moving magnetic core is magnetized by the electromagnetic field to generate magnetic attraction to the static magnetic core, so that the lower end face of the moving magnetic core and the upper end face of the static magnetic core contact due to the magnetic force to generate friction, thereby generating a friction torque load on the output shaft of the servo to be measured. According to the friction torque of the rotating shaft displayed by the control terminal, any simulated load torque can be obtained by adjusting the current size of the control terminal.
[0020] (2) The present invention can control the loading range of the load torque by changing the coil current, and can obtain any continuous simulated load, thereby achieving the purpose of obtaining the true performance of the servo system through a semi-physical simulation test.
[0021] (3) The electromagnetic steering gear load simulation device of the present invention uses a locking nut to fasten the connection between the rotating shaft and the moving magnetic core housing, thereby ensuring that the steering gear to be tested can be tested normally in both forward and reverse rotations.
[0022] (4) The present invention has a simple structure, is easy to control, and has a wide range of applications. The coaxial arrangement of the moving magnetic core and the rotating shaft can ensure that the friction torque is uniform and free of eccentric load. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a structural schematic diagram of the present invention;
[0024] In the figure: 1-coil; 2-control and measurement module; 3-rotating shaft; 4-moving magnetic core; 5-moving magnetic core housing; 6-moving magnetic core cover; 7-static magnetic core; 8-locking nut; 9-angular contact ball bearing; 10-static magnetic core housing. DETAILED DESCRIPTION
[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0026] See attached Figure 1 , an electromagnetic steering gear load simulation device, comprising: a coil 1, a control and measurement module 2, a rotating shaft 3, a moving magnetic core 4, a moving magnetic core housing 5, a moving magnetic core cover 6, a static magnetic core 7, a locking nut 8, an angular contact ball bearing 9 and a static magnetic core housing 10.
[0027] The moving magnetic core housing 5 is made of stainless steel and has a cylindrical shape. A cylindrical stepped hole is milled out of the upper end face for installing and accommodating the control and measurement module. A threaded cylindrical hole is milled out of the moving magnetic core housing 5 from the center of the lower end face, and the depth is connected to the stepped hole on the upper end face of the moving magnetic core housing 5 to form a through hole; an annular cavity is milled out of the moving magnetic core housing 5 from the lower end face to install the moving magnetic core 4 and the coil 1; the moving magnetic core housing 5 forms two concentric hollow circular ring convex structures inside and outside when viewed from the lower end face; the inner circular ring convex structure of the moving magnetic core housing 5 is designed with an internal thread for threaded connection with the rotating shaft 3; the inner circular ring convex structure of the moving magnetic core housing 5 is designed with an external thread for threaded connection with the moving magnetic core 4. The material of the moving magnetic core 4 is an iron-nickel-based amorphous alloy or other ferromagnetic wear-resistant metal material, which is designed as a circular cylinder, and the inner cylindrical surface is designed with an internal thread; the moving magnetic core 4 is installed on the outer cylindrical surface of the inner circular protrusion structure of the moving magnetic core shell 5 through a threaded connection; the moving magnetic core 4 has ferromagnetism and can be instantly magnetized by the electromagnetic field, and can be instantly demagnetized after the electromagnetic field disappears; the lower end surface of the moving magnetic core 4 is specially treated to increase its friction coefficient. The coil 1 is a copper coil coated with an insulating layer, which is wound on the outer cylindrical surface of the moving magnetic core 4 and installed in the annular cavity of the moving magnetic core shell 5 together with the moving magnetic core 4. The material of the moving magnetic core cover plate 6 is stainless steel, and the shape is an annular thin plate. It is connected by an external thread and an internal thread on the inner surface of the outer circular shell of the moving magnetic core shell 5, and the coil 1 is fastened in the closed cavity. The moving magnetic core 4 passes through the inner hole of the moving magnetic core cover plate 6 and protrudes from the lower end surface of the moving magnetic core cover plate 6. The material of the static magnetic core shell 10 is stainless steel, and a cylindrical groove is milled on the upper end surface for installing the static magnetic core 7, and a through hole is milled in the center for passing the rotating shaft 3; the bottom surface of the cylindrical groove of the static magnetic core shell 10 is designed with 6 through holes along the circumferential direction for fastening the static magnetic core 7. The static magnetic core 7 is also made of iron-nickel-based amorphous alloy or other ferromagnetic wear-resistant metal materials, and is in the shape of a circular column. It is installed in the cylindrical groove of the static magnetic core shell 10, and its lower end surface is correspondingly designed with 6 countersunk threaded holes along the circumferential direction. The static magnetic core 7 is fastened in the cylindrical groove of the static magnetic core shell 10 by 6 countersunk screws; the upper end surface of the static magnetic core 7 is specially treated to increase its friction coefficient. The outer ring of the angular contact ball bearing 9 is installed in the inner cylindrical hole of the static magnetic core 7 by interference fit, and the axial installation position is that its upper end surface is slightly lower than the upper end surface of the static magnetic core 7. The rotating shaft 3 is made of stainless steel, one end of which is designed with an inner hexagonal structure for connecting to the output shaft of the servo to be tested, and the other end is designed with an outer thread for connecting to the moving magnetic core housing 5; the rotating shaft 3 passes through the lower end face of the angular contact ball bearing 9, and has an interference fit with the inner ring of the angular contact ball bearing 9; the lower end face of the angular contact ball bearing 9 presses against the shoulder end face of the rotating shaft 3 for axial positioning. The locking nut 8 is screwed into a suitable position from the threaded side of the rotating shaft 3; the rotating shaft 3 is connected to the inner thread of the inner ring protrusion structure of the moving magnetic core housing 5 through the outer thread, and its upper end face presses against the stepped hole in the center of the moving magnetic core housing 5, and the locking nut 8 is tightened to lock the rotating shaft 3 and the moving magnetic core housing 5.The control and measurement module 2 is connected to the coil 1, and a torque measuring instrument is designed inside the coil 1, which is installed as a whole in the stepped hole on the upper end surface of the moving magnetic core shell 5; the control and measurement module 2 is connected to the upper end surface of the rotating shaft 3, and can measure the friction torque exerted on the rotating shaft 3; the control and measurement module 2 is externally connected to the control terminal, which provides power and displays the rotating shaft torque measured by the control and measurement module through the control terminal.
[0028] During the test, the outer surface of the static magnetic core housing 10 is clamped by a tooling to fix the device, and the output shaft of the servo to be tested is connected and fastened through one end of the hexagonal structure of the rotating shaft 1. The external control terminal is connected to the coil 1 through the control and measurement module 2 to generate an electromagnetic field. The moving magnetic core 4 is magnetized by the electromagnetic field to generate magnetic attraction to the static magnetic core 7, so that the lower end surface of the moving magnetic core 4 and the upper end surface of the static magnetic core 5 contact due to the magnetic force to generate friction, thereby generating a friction torque load on the output shaft of the servo to be tested. According to the friction torque load size of the rotating shaft 3 displayed by the control terminal, any simulated load torque can be obtained by adjusting the current size of the control terminal.
[0029] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.
Claims
1. An electromagnetic steering gear load simulation device, characterized in that: include: Coil (1), control and measurement module (2), rotating shaft (3), moving magnetic core (4), moving magnetic core housing (5), moving magnetic core cover plate (6), static magnetic core (7), locking nut (8), angular contact ball bearing (9) and static magnetic core housing (10); The rotating shaft (3) is installed at the center position of the moving magnetic core housing (5), and the upper end surface of the rotating shaft (3) is connected to the control and measurement module (2); the lower end surface of the moving magnetic core housing (5) is provided with an annular cavity, and the moving magnetic core (4) wound with the coil (1) is installed in the annular cavity and fastened by the moving magnetic core cover plate (6); The locking nut (8) locks the rotating shaft (3) and the moving magnetic core housing (5); the lower end of the rotating shaft (3) passes through the static magnetic core housing (10); the static magnetic core (7) is installed in the static magnetic core housing (10); and the angular contact ball bearing (9) is provided between the static magnetic core (7) and the rotating shaft (3); During testing, the static magnetic core housing (10) is clamped by a tool, the lower end of the rotating shaft (3) is tightly connected to the output shaft of the servo to be tested, and the coil (1) is powered through the control and measurement module (2) by connecting to an external control terminal to generate an electromagnetic field.
2. An electromagnetic steering gear load simulation device as claimed in claim 1, characterized in that: The moving magnetic core housing (5) is made of stainless steel and has a cylindrical shape. A cylindrical stepped hole is milled on the upper end face for mounting the control and measurement module (2); a threaded cylindrical hole is milled at the center of the lower end face of the moving magnetic core housing (5) for mounting the rotating shaft (3), and the threaded cylindrical hole is communicated with the cylindrical stepped hole milled on the upper end face; an annular cavity is milled on the lower end face of the moving magnetic core housing (5) for mounting the moving magnetic core (4); the rotating shaft (3) is threadedly connected to the threaded cylindrical hole of the moving magnetic core housing (5), and the moving magnetic core (4) is threadedly connected to the annular cavity of the moving magnetic core housing (5).
3. An electromagnetic steering gear load simulation device as claimed in claim 1 or 2, characterized in that: The moving magnetic core (4) is made of ferromagnetic wear-resistant metal material and has a circular cylindrical shape. The lower end surface of the moving magnetic core (4) is processed to increase its friction coefficient.
4. An electromagnetic steering gear load simulation device as claimed in claim 1 or 2, characterized in that: The moving magnetic core cover plate (6) is made of stainless steel and is in the shape of an annular thin plate. It is connected to the inner thread on the inner surface of the outer ring shell of the moving magnetic core shell (5) through an external thread, so as to fasten the coil (1) in the closed cavity; the moving magnetic core (4) passes through the inner hole of the moving magnetic core cover plate (6) and protrudes from the lower end surface of the moving magnetic core cover plate (6).
5. An electromagnetic steering gear load simulation device as claimed in claim 4, characterized in that: The static magnetic core shell (10) is made of stainless steel, a cylindrical groove is milled on the upper end surface for installing the static magnetic core (7), and a through hole is milled in the center for passing the rotating shaft (3); the bottom surface of the cylindrical groove of the static magnetic core shell (10) is provided with 6 through holes along the circumferential direction for fastening the static magnetic core (7).
6. An electromagnetic steering gear load simulation device as claimed in claim 5, characterized in that: The static magnetic core (7) is made of ferromagnetic wear-resistant metal material and is in the shape of a circular column. It is installed in the cylindrical groove of the static magnetic core housing (10). Its lower end surface is provided with 6 countersunk threaded holes along the circumferential direction. The static magnetic core (7) is fastened in the cylindrical groove of the static magnetic core housing (10) by 6 countersunk screws. The upper end surface of the static magnetic core (7) is processed to increase the friction coefficient.
7. An electromagnetic steering gear load simulation device as claimed in claim 6, characterized in that: The outer ring of the angular contact ball bearing (9) is installed in the inner cylindrical hole of the static magnetic core (7) by means of interference fit, and the upper end surface of the angular contact ball bearing (9) is lower than the upper end surface of the static magnetic core (7); The rotating shaft (3) is made of stainless steel, and has a hexagonal structure at the lower end for connecting to the output shaft of the servo to be tested, and an external thread at the other end for connecting to the moving magnetic core housing (5); the rotating shaft (3) passes through the lower end surface of the angular contact ball bearing (9) and is interference fit with the inner ring of the angular contact ball bearing (9); the lower end surface of the angular contact ball bearing (9) is pressed against the shoulder end surface of the rotating shaft (3) for axial positioning; The locking nut (8) is screwed into the rotating shaft (3) from the threaded side; the rotating shaft (3) is connected to the internal thread of the inner annular protrusion structure of the moving magnetic core housing (5) through the external thread, and its upper end surface is against the stepped hole in the center of the moving magnetic core housing (5), and the locking nut (8) is tightened to lock the rotating shaft (3) and the moving magnetic core housing (5).
8. An electromagnetic steering gear load simulation device as claimed in claim 1 or 2, characterized in that: The control and measurement module (2) is connected to the coil (1); a torque measuring instrument is designed inside the control and measurement module (2) for measuring the friction torque applied to the rotating shaft (3); the control and measurement module (2) is externally connected to a control terminal, which provides power and displays the measured rotating shaft torque.