CN216774642U - Dual-redundancy electric steering engine - Google Patents
Dual-redundancy electric steering engine Download PDFInfo
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- CN216774642U CN216774642U CN202122738015.6U CN202122738015U CN216774642U CN 216774642 U CN216774642 U CN 216774642U CN 202122738015 U CN202122738015 U CN 202122738015U CN 216774642 U CN216774642 U CN 216774642U
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- steering engine
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- planetary roller
- roller screw
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Abstract
The utility model belongs to the field of steering engine related equipment, and particularly relates to a dual-redundancy electric steering engine which comprises a steering engine, two brushless motors, a planetary roller screw and a hollow roller screw, wherein the two brushless motors are used for driving the steering engine; and the LVDT sensor is positioned in the planetary roller screw and used for monitoring a position signal of the steering engine. The dual-redundancy electric steering engine simultaneously uses two motors to drive the steering engine to move, a fault passage can be cut off when one motor fails, and the steering engine can be continuously driven to move by the rest normal passages.
Description
Technical Field
The utility model belongs to the field of steering engine related equipment, and particularly relates to a dual-redundancy electric steering engine.
Background
The steering engine comprises a pneumatic steering engine, a hydraulic steering engine and an electric steering engine according to different power sources. Compared with a pneumatic steering engine and a hydraulic steering engine, the electric steering engine system has the characteristics of high reliability, high efficiency, light weight and better maintainability. Therefore, the electric steering engine system will become an important direction for the development of the future steering engine system.
Most of the existing electric steering engines are in single-redundancy configuration, the steering engines are driven by one motor, and if the driving motor fails, the steering engines cannot work, so that the existing electric steering engines cannot be widely used in airplanes all the time based on safety and reliability considerations.
However, for any system, the possibility of failure always exists objectively, and although the overall reliability of the system can be improved by improving the quality of each component element of the system, strengthening the protection of the element, even improving the design, and the like, the reliability is not improved significantly. The redundancy technology can effectively improve the reliability of the system while relatively reducing the requirements on components. Therefore, one of the effective ways to improve the reliability of the steering engine system is to increase the redundancy of the steering engine system. In a traditional electric steering engine, a structure that a motor and a gear mechanism and a screw mechanism are installed and fixed in a steering engine shell is generally used. Because the electric steering engine is mostly in a frequent real-time working state in flight control, the electric steering engine is easy to break down particularly under the conditions of high frequency and high pneumatic load, so that an object controlled by the steering engine is out of control, and serious harm and economic loss are caused. Meanwhile, the electric steering engine cannot use a high-power motor due to the limitation of the installation space of the steering engine, so that the multi-stage output power is limited.
At present, electric steering engine system commonly used is mostly two redundancy designs, and the two redundancy designs of drive circuit or motor winding promptly adopt ordinary screw nut transmission more, and the output shaft direction is perpendicular with motor spindle direction, and the stroke is shorter, bearing capacity is limited, and is not convenient for install and maintain, and position transmission is inaccurate moreover.
In order to solve the problems, the utility model provides a dual-redundancy electric steering engine.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least one of the above problems or disadvantages and to provide at least one advantage which will be described later.
To achieve these objects and other advantages in accordance with the purpose of the utility model, the present invention provides a dual redundancy electric steering engine, including:
and the two brushless motors are used for driving the steering engine.
The planetary roller screw is connected with the two brushless motors and is a hollow screw;
and the LVDT sensor is positioned in the planetary roller screw and used for monitoring the position signal of the steering engine.
Preferably, the brushless motor is a dc brushless motor, and the dc brushless motor includes a resolver sensor for monitoring a motor fault.
Preferably, the brushless motor speed reducer further comprises at least two stages of straight-tooth speed reducers which are respectively meshed with the two brushless motors.
Preferably, still include screw, screw sleeve and lead screw gear, lead screw gear with the straight tooth reduction gear meshing, lead screw gear with planet roller lead screw connects, the screw cover is established on the planet roller lead screw, the screw sleeve with the screw passes through flange joint, planet roller lead screw is located the inside of screw sleeve.
Preferably, the device further comprises an angular contact bearing which is in supporting connection with the planetary roller screw.
Preferably, the steering engine further comprises a shell, a motor socket, an LVDT socket and a spinning thermistor socket, wherein the motor socket, the spinning thermistor socket and the LVDT socket are arranged on the shell of the steering engine.
Preferably, the LVDT sensor is connected to the controller, and the controller is connected to the LVDT sensor and the rotation sensor.
Preferably, the planetary roller screw, the nut and the nut sleeve are coaxially arranged.
The utility model has the advantages of
1. The dual-redundancy electric steering engine provided by the utility model simultaneously uses two motors to drive the steering engine to move, a fault channel can be cut off when one motor fails, and the steering engine can be continuously driven to move by the rest normal channels.
2. According to the dual-redundancy electric steering engine, the planetary roller screw is used as a transmission component, so that the safety and the reliability of the steering engine are improved.
3. According to the dual-redundancy electric steering engine, the LVDT sensor is adopted, so that the accuracy of linear displacement output by the steering engine is greatly improved, and the safety is improved.
3. The dual-redundancy electric steering engine provided by the utility model is simple in structure, easy to install and disassemble and capable of expanding the application range.
4. The dual-redundancy electric steering engine provided by the utility model has the characteristics of low cost, small volume, safety and reliability.
Drawings
FIG. 1 is a schematic structural diagram of a dual-redundancy electric steering engine according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the dual-redundancy electric steering engine of the present invention;
FIG. 3 is an enlarged structural view of the connection portion of the motor and the planetary roller screw according to the present invention;
FIG. 4 is a schematic diagram of an external structure of the dual-redundancy electric steering engine of the present invention;
the device comprises a steering engine 1, two brushless motors 2, a planetary roller screw 3, a LVDT sensor 4, a motor gear 5, a straight-tooth reducer 6, a nut 7, a nut sleeve 8, a nut gear 9, a flange 10, an angular contact bearing 11, a shell 12, a motor socket 13, a LVDT socket 14 and a rotary thermal sensitive resistor socket 15.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.
In the present specification, when an element is referred to as being "connected to" or coupled to "or" disposed in "another element, it may be" directly connected to "or coupled to" or "directly disposed in" the other element. Or be connected or coupled to or disposed in another element with other elements interposed therebetween, unless it is volumetrically "directly coupled or connected to" or "directly disposed in" the other element. Further, it will be understood that when an element is referred to as being "on," "over," "under" or "under" another element, it can be "in direct" contact with the other element or in contact with the other element interposed therebetween, unless it is referred to as being in direct contact with the other element; it will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, as embodied and broadly described herein, as shown in fig. 1 and 2, there is provided a dual redundancy electric steering engine including a steering engine 1, further including:
to achieve these objects and other advantages and in accordance with the purpose of the utility model, as embodied and broadly described herein, there is provided a dual redundancy electric steering engine, as shown in fig. 1 and 2, including a steering engine 1, further including:
and two brushless motors 2 for driving the steering engine.
The planetary roller screw 3 is connected with the two brushless motors and is a hollow screw;
and the LVDT sensor 4 is positioned inside the planetary roller screw and used for monitoring a position signal of the steering engine.
According to the dual-redundancy electric steering engine, the speed integration of the two motors is realized by using the planetary gear integration mechanism, so that the steering engine can be driven by the two motors simultaneously or independently, the electric redundancy of the steering engine is increased, and the steering engine can continue to work after one motor fails; in addition, the steering engine uses a planetary roller screw, and the planetary roller screw has larger bearing capacity than the traditional ball screw, higher reliability and difficult jamming. The safety and the reliability of the steering engine can be greatly improved by the two measures. The steering engine adopts the LVDT sensor, so that the steering engine has higher control precision and stability, stronger environmental adaptability and higher safety.
On the basis of the above situation, specifically, the brushless motor 2 is a dc brushless motor, the dc brushless motor includes a rotation sensor 5, when the motor fails, the rotation sensor 5 can monitor the motor, the controller can remove the failed motor, and the steering engine is controlled by another motor.
Specifically, as shown in fig. 1, the brushless direct-current motor further includes at least two stages of straight-tooth speed reducers 6, which are represented by Z1, Z2, Z3, and Z4, and are respectively engaged with two brushless motors, and the brushless direct-current motor further includes a nut 7, a nut sleeve 8, and a screw gear 9, as shown in fig. 3, the screw gear 9 is engaged with the straight-tooth speed reducer 6, as shown in fig. 1 and fig. 2, the screw gear 9 is connected with the planetary roller screw, the nut 7 is sleeved on the planetary roller screw 3, the nut sleeve 8 is connected with the nut 7 through a flange 10, the planetary roller screw is located inside the nut sleeve, and the planetary roller screw, the nut, and the nut sleeve are coaxially disposed.
After being decelerated by gears in the two-stage straight-tooth reducers 6, the motor gears 5 of the two motors 2 are respectively meshed with the planetary roller screw gear 9 to drive the planetary roller screw 3 to rotate and drive the nut sleeve 8 to realize linear motion. The nut sleeve 8 drives the dual-redundancy LVDT sensor 4 in the hollow roller screw to move linearly, and the dual-redundancy LVDT provides real-time linear position feedback signals to the steering engine controller.
The planetary gear comprehensive mechanism adopted by the utility model realizes the speed synthesis of the two motors, so that the steering engine can be driven by the two motors simultaneously or independently, the electrical redundancy of the steering engine is increased, and the steering engine can continue to work after one motor fails; in addition, the steering engine uses a planetary roller screw for transmission, the planetary roller screw has larger bearing capacity than the traditional ball screw, the reliability is higher, the locking is not easy, and the safety and the reliability of the steering engine can be greatly improved.
Specifically, as shown in fig. 1 and 2, the steering engine further comprises an angular contact bearing 11, which is arranged at the rearmost end of the steering engine and is in supporting connection with the planetary roller screw.
Considering that the output force of the steering engine is large, the planet roller screw 3 adopts the angular contact bearing 11 as a support, so that the structure of the steering engine in the length direction is more compact, the angular contact bearing 11 is arranged at the rearmost end of the steering engine, all force bearing lines do not pass through a driving assembly, and the structural deformation of a transmission chain under the condition of large load force is avoided.
On the basis of the above embodiment, specifically, as shown in fig. 4, the steering engine further includes a housing 12, a motor socket 13, an LVDT socket 14, and a spinning thermistor socket 15, where the motor socket 13, the spinning thermistor socket 15, and the LVDT socket 14 are disposed on the housing 12 of the steering engine, the spinning thermistor socket 15 is used to monitor the internal temperature of the motor by introducing a spinning thermistor, the motor socket 14 is used as an interface between the motor and the steering engine controller, and the LVDT socket 14 is used as an interface between the LVDT and the steering engine controller.
Specifically, the LVDT sensor and the rotary transformer sensor are connected with a controller.
The steering engine controller receives a position instruction signal of the flight control computer, integrates the position feedback signal provided by the LVDT, realizes vector control on the motor by combining a control algorithm and a rotary transformer, and drives a steering engine shaft to output a linear displacement real-time tracking position instruction signal to form a position closed loop servo system.
The working principle of the utility model is as follows: the motor socket, the LVDT socket and the rotary thermal sensitive resistor socket are connected with a steering engine controller, the motor drives a motor shaft pinion, the motor shaft pinion drives a straight-tooth speed reducer to decelerate and then is meshed with a planetary roller screw gear to drive the planetary roller screw to rotate, a screw sleeve connected with the planetary roller screw is driven to realize linear motion, the screw sleeve drives a dual-redundancy LVDT sensor in a hollow roller screw to perform linear motion, and the dual-redundancy LVDT provides a real-time linear position feedback signal to the steering engine controller; if one motor breaks down, the rotation sensor transmits a fault signal to the controller after monitoring, the controller can cut off the fault motor, and the steering engine is controlled by the other motor.
When the dual-redundancy electric steering engine provided by the utility model normally works, the electric steering engine works in a main/main working mode, 2 motors simultaneously drive the steering engine to work, and a specified performance index is realized according to a force comprehensive redundancy mode; when the controller detects that a motor has a fault, the power supply of the motor is cut off after the judgment through the logic and self-checking function, the rest set of driving components continues to work, the necessary performance index is realized, and the dynamic characteristic of the steering engine is required to be degraded.
Other alternative embodiments of the utility model will not be described in detail herein.
While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides a dual-redundancy electric steering engine, includes the steering engine, its characterized in that still includes:
two brushless motors for driving the steering engine;
the planetary roller screw is connected with the two brushless motors and is a hollow screw;
the LVDT sensor is positioned in the planetary roller screw and used for monitoring a position signal of the steering engine;
an angular contact bearing in supporting connection with the planetary roller screw;
and at least two stages of straight-tooth reducers which are respectively meshed with the two brushless motors.
2. A dual-redundancy electric steering engine according to claim 1, wherein said brushless electric motor is a dc brushless motor, said dc brushless motor including a resolver sensor for monitoring motor faults.
3. The dual-redundancy electric steering engine according to claim 1, further comprising a nut, a nut sleeve and a screw gear, wherein the screw gear is engaged with the straight-tooth reducer, the screw gear is connected with the planetary roller screw, the nut is sleeved on the planetary roller screw, the nut sleeve is connected with the nut through a flange, and the planetary roller screw is located inside the nut sleeve.
4. The dual-redundancy electric steering engine according to claim 1, further comprising a housing, a motor socket, an LVDT socket, and a spinning thermistor socket, wherein the motor socket, the spinning thermistor socket, and the LVDT socket are disposed on the housing of the steering engine.
5. The dual-redundancy electric steering engine of claim 2, further comprising a controller coupled to the LVDT sensor and the resolver sensor.
6. The dual-redundancy electric steering engine according to claim 3, wherein the planetary roller screw, the nut, and the nut sleeve are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122738015.6U CN216774642U (en) | 2021-11-09 | 2021-11-09 | Dual-redundancy electric steering engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122738015.6U CN216774642U (en) | 2021-11-09 | 2021-11-09 | Dual-redundancy electric steering engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216774642U true CN216774642U (en) | 2022-06-17 |
Family
ID=81960113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122738015.6U Active CN216774642U (en) | 2021-11-09 | 2021-11-09 | Dual-redundancy electric steering engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216774642U (en) |
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2021
- 2021-11-09 CN CN202122738015.6U patent/CN216774642U/en active Active
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