CN109723757B - Centrifugal actuator for vibration active control - Google Patents
Centrifugal actuator for vibration active control Download PDFInfo
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- CN109723757B CN109723757B CN201711029409.6A CN201711029409A CN109723757B CN 109723757 B CN109723757 B CN 109723757B CN 201711029409 A CN201711029409 A CN 201711029409A CN 109723757 B CN109723757 B CN 109723757B
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Abstract
The invention belongs to the technical field of electromechanical control, and particularly relates to a centrifugal actuator for active vibration control. In the invention, a motor is fixedly arranged on a rack, the motor is fixedly connected with a motor bevel gear, the tooth surface of the motor bevel gear is simultaneously meshed with the tooth surface of a central shaft bevel gear and the tooth surface of a hollow shaft bevel gear, and the central shaft bevel gear is connected on a central shaft through a key; the hollow shaft bevel gear is connected with the hollow shaft; the inner ring eccentric block is connected with one end of the inner ring wheel bracket, and the other end of the inner ring wheel bracket is fixedly connected with the hollow shaft; the outer ring eccentric block is connected with an outer ring wheel support, an expansion sleeve is sleeved on the outer ring wheel support and fixedly connected with one end of a central shaft, and the other end of the central shaft is connected with a rotary transformer. The invention has compact structure, clear functional interface, easy realization, and is used for the centrifugal actuator for vibration active control, which improves the space utilization rate and is convenient for installation and disassembly.
Description
Technical Field
The invention belongs to the technical field of electromechanical control, and particularly relates to a centrifugal actuator for active vibration control.
Background
A centrifugal actuator is a device that uses centrifugal force generated by rotation of an eccentric mass as output force. Through the rotational speed and the phase place of control eccentric wheelset, can produce amplitude, frequency and controllable vibrational force in phase place, compare in traditional electromagnetic actuator, centrifugal actuator has better power-to-weight ratio, and still has advantages such as operating frequency is adjustable, reliability height, has extensive application prospect in fields such as helicopter vibration active control.
Centrifugal actuators have become the mainstream configuration of the vibration active control system of the foreign advanced helicopter. Centrifugal actuators have been used on helicopters such as hawk and the like in China, and no application case of the centrifugal actuators exists in China. In the current research and application scheme, the layout of the eccentric wheels adopts a consistent design, and the eccentric wheels respectively rotate in respective circular rings, so that the larger space is occupied, and the power-weight ratio of the actuator is difficult to further improve.
Disclosure of Invention
The technical problems solved by the invention are as follows: aiming at the technical bottleneck of the existing product, the eccentric wheel layout adopts the non-uniform design of concentric fan-shaped blocks, and the bevel gear is driven by the same-speed reversing mechanism, so that the centrifugal actuator which has compact structure, clear functional interface, easy realization and is used for vibration active control is realized, the space utilization rate is improved, and the installation and the disassembly are convenient.
The technical scheme adopted by the invention is as follows:
a centrifugal actuator for vibration active control comprises a frame, a motor bevel gear, a hollow shaft, an inner ring wheel support, an inner ring eccentric block, a central shaft bevel gear, a central shaft, an expansion sleeve, an outer ring wheel support, an outer ring eccentric block and a rotary transformer; the motor is fixedly arranged on the rack and fixedly connected with the motor bevel gear, the tooth surface of the motor bevel gear is simultaneously meshed with the tooth surface of the central shaft bevel gear and the tooth surface of the hollow shaft bevel gear, and the central shaft bevel gear is connected to the central shaft through a key; the hollow shaft bevel gear is connected with the hollow shaft; the inner ring eccentric block is connected with one end of the inner ring wheel bracket, and the other end of the inner ring wheel bracket is fixedly connected with the hollow shaft; the outer ring eccentric block is connected with an outer ring wheel support, an expansion sleeve is sleeved on the outer ring wheel support and fixedly connected with one end of a central shaft, and the other end of the central shaft is connected with a rotary transformer.
The central shaft rotates with the rotation of the central shaft bevel gear.
The rotary transformer is used for measuring the angle and the angular speed of the central shaft.
The driving route of the inner ring eccentric block is as follows: the motor drives the motor bevel gear to rotate, the motor bevel gear drives the hollow shaft bevel gear through meshing, and the inner ring eccentric block is driven to rotate through the hollow shaft and the inner ring wheel support.
The driving route of the outer ring eccentric block is as follows: the motor drives the motor bevel gear to rotate, the motor bevel gear drives the central shaft bevel gear through meshing, and the outer ring eccentric block is driven to rotate through the central shaft, the expansion sleeve and the outer ring wheel support.
In the process of rotating reversely at the same speed, centrifugal forces generated by the inner ring eccentric block and the outer ring eccentric block are offset in the horizontal direction and are superposed in the vertical direction, so that alternating vibration force in the vertical direction is generated.
The actuator comprises two groups of inner ring eccentric blocks and outer ring eccentric blocks, and the two groups of inner ring eccentric blocks and the outer ring eccentric blocks are matched in speed and phase, so that the vertical vibration force with controllable amplitude, phase and frequency can be generated.
The invention has the beneficial effects that:
(1) the centrifugal actuator for vibration active control provided by the invention realizes function layering, so that the replacement of the motor and the eccentric wheel set is easy to execute, and the serialization of the actuator is convenient;
(2) the centrifugal actuator for vibration active control provided by the invention adopts the single motor to control the two centrifugal wheels, so that unidirectional centrifugal output force is realized, and the control is simple and easy;
(3) the centrifugal actuator for actively controlling vibration improves the space utilization rate and is convenient to mount and dismount.
Drawings
FIG. 1 is a schematic view of a kinematic model of a centrifugal actuator;
FIG. 2 is a schematic diagram of a centrifugal actuator drive configuration for active vibration control according to the present invention;
in the figure: 1-frame, 2-motor, 3-motor bevel gear, 4-hollow shaft bevel gear, 5-hollow shaft, 6-inner ring wheel bracket, 7-inner ring eccentric block, 8-central shaft bevel gear, 9-central shaft, 10-expansion sleeve, 11-outer ring wheel bracket, 12-outer ring eccentric block and 13-rotary transformer.
Detailed Description
The centrifugal actuator for active vibration control according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1The actuator consists of A, B two groups of same mechanisms; each group comprises two fan-shaped circular ring eccentric blocks P1 and P2, and a concentric circular ring arrangement scheme is adopted; the P1 and the P2 are driven by a single motor to realize the same-speed reverse movement. The two eccentrics have the same mass-diameter product mr, as a result of the centrifugal force F-mrw2Centrifugal forces of the same magnitude can be generated.
As shown in fig. 2, the centrifugal actuator for vibration active control provided by the present invention comprises a frame 1, a motor 2, a motor bevel gear 3, a hollow shaft bevel gear 4, a hollow shaft 5, an inner ring wheel support 6, an inner ring eccentric block 7, a central shaft bevel gear 8, a central shaft 9, an expansion sleeve 10, an outer ring wheel support 11, an outer ring eccentric block 12, and a rotary transformer 13; the motor 2 is fixedly arranged on the rack 1 through a screw, the motor 2 is connected with the motor bevel gear 3 through a cylindrical pin, the tooth surface of the motor bevel gear 3 is meshed with the tooth surface of the central shaft bevel gear 8 and the tooth surface of the hollow shaft bevel gear 4, the central shaft bevel gear 8 is connected on the central shaft 9 through a key, and the central shaft 9 rotates along with the rotation of the central shaft bevel gear 8; the hollow shaft bevel gear 4 is connected with the hollow shaft 5 through a key and a screw; the inner ring eccentric block 7 is connected with one end of an inner ring wheel bracket 6, and the other end of the inner ring wheel bracket 6 is fixedly connected with the hollow shaft 5; the outer ring eccentric block 12 is connected with an outer ring wheel support 11, an expansion sleeve 10 is sleeved on the outer ring wheel support 11, the expansion sleeve 10 is fixedly connected with one end of the central shaft 9, the other end of the central shaft 9 is connected with a rotary transformer 13, and the rotary transformer 13 is used for measuring the angle and the angular speed of the central shaft 9.
The working principle of the invention is as follows:
inner ring eccentric 7 drive route: the motor 2 drives the motor bevel gear 3 to rotate, the motor bevel gear 3 drives the hollow shaft bevel gear 4 through meshing, and drives the inner ring eccentric block 7 to rotate through the hollow shaft 5 and the inner ring wheel bracket 6; outer ring eccentric mass 12 drive path: the motor 2 drives the motor bevel gear 3 to rotate, the motor bevel gear 3 drives the central shaft bevel gear 8 through meshing, and drives the outer ring eccentric block 12 to rotate through the central shaft 9, the expansion sleeve 10 and the outer ring wheel bracket 11; the resolver 13 is used to measure the angle and angular velocity of the central shaft 9.
During the same-speed reverse rotation, centrifugal forces generated by the two eccentric blocks P1 and P2 are offset in the horizontal direction and are superposed in the vertical direction, so that alternating vibration force in the vertical direction is generated. A. And the two groups of mechanisms B can generate vertical vibration force with controllable amplitude, phase and frequency by matching the speed and the phase.
Claims (7)
1. A centrifugal actuator for active control of vibration, comprising: the device comprises a rack (1), a motor (2), a motor bevel gear (3), a hollow shaft bevel gear (4), a hollow shaft (5), an inner ring wheel support (6), an inner ring eccentric block (7), a central shaft bevel gear (8), a central shaft (9), an expansion sleeve (10), an outer ring wheel support (11), an outer ring eccentric block (12) and a rotary transformer (13); the motor (2) is fixedly arranged on the rack (1), the motor (2) is fixedly connected with the motor bevel gear (3), the tooth surface of the motor bevel gear (3) is simultaneously meshed with the tooth surface of the central shaft bevel gear (8) and the tooth surface of the hollow shaft bevel gear (4), and the central shaft bevel gear (8) is connected to the central shaft (9) through a key; the hollow shaft bevel gear (4) is connected with the hollow shaft (5); the inner ring eccentric block (7) is connected with one end of the inner ring wheel bracket (6), and the other end of the inner ring wheel bracket (6) is fixedly connected with the hollow shaft (5); the outer ring eccentric block (12) is connected with an outer ring wheel support (11), an expansion sleeve (10) is sleeved on the outer ring wheel support (11), the expansion sleeve (10) is fixedly connected with one end of a central shaft (9), and the other end of the central shaft (9) is connected with a rotary transformer (13).
2. A centrifugal actuator for active control of vibration as claimed in claim 1, wherein: the central shaft (9) rotates along with the rotation of the central shaft bevel gear (8).
3. A centrifugal actuator for active control of vibration as claimed in claim 1, wherein: the rotary transformer (13) is used for measuring the angle and the angular speed of the central shaft (9).
4. A centrifugal actuator for active control of vibration as claimed in claim 2, wherein: the driving route of the inner ring eccentric block (7) is as follows: the motor (2) drives the motor bevel gear (3) to rotate, the motor bevel gear (3) drives the hollow shaft bevel gear (4) through meshing, and the inner ring eccentric block (7) is driven to rotate through the hollow shaft (5) and the inner ring wheel support (6).
5. A centrifugal actuator for active control of vibration as claimed in claim 4, wherein: the driving route of the outer ring eccentric block (12) is as follows: the motor (2) drives the motor bevel gear (3) to rotate, the motor bevel gear (3) drives the central shaft bevel gear (8) through meshing, and the outer ring eccentric block (12) is driven to rotate through the central shaft (9), the expansion sleeve (10) and the outer ring wheel support (11).
6. A centrifugal actuator for active control of vibration as claimed in claim 5, wherein: in the process of rotating reversely at the same speed, centrifugal forces generated by the inner ring eccentric block (7) and the outer ring eccentric block (12) are offset in the horizontal direction and are superposed in the vertical direction, so that alternating vibration force in the vertical direction is generated.
7. A centrifugal actuator for active control of vibration as claimed in claim 6, wherein: the actuator comprises two groups of inner ring eccentric blocks (7) and outer ring eccentric blocks (12), wherein the two groups of inner ring eccentric blocks (7) and the outer ring eccentric blocks (12) are matched in speed and phase, and can generate vertical vibration force with controllable amplitude, phase and frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711029409.6A CN109723757B (en) | 2017-10-27 | 2017-10-27 | Centrifugal actuator for vibration active control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711029409.6A CN109723757B (en) | 2017-10-27 | 2017-10-27 | Centrifugal actuator for vibration active control |
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| Publication Number | Publication Date |
|---|---|
| CN109723757A CN109723757A (en) | 2019-05-07 |
| CN109723757B true CN109723757B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711029409.6A Active CN109723757B (en) | 2017-10-27 | 2017-10-27 | Centrifugal actuator for vibration active control |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112460204B (en) * | 2020-11-30 | 2022-08-12 | 北京精密机电控制设备研究所 | Fan-shaped circular ring eccentric wheel for vibration active control centrifugal actuator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216577A (en) * | 2013-04-01 | 2013-07-24 | 南京航空航天大学 | Centrifugal actuator and control method thereof |
| DE102012111614A1 (en) * | 2012-11-29 | 2014-06-18 | Fev Gmbh | Device for actively manipulating moment of inertia of drive train, has additional mass coupled or decoupled to gear element of gear box of drive train, when transmitting torque in power flow of gear box |
| US9197112B2 (en) * | 2011-06-30 | 2015-11-24 | Hanning Elektro-Werke Gmbh & Co. Kg | Device for dynamic balancing of a rotating component of a centrifuge |
| CN105508505A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Centrifugal actuator adopting bevel gear reversing |
| CN105508501A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Centrifugal type actuator for reversing cylindrical gear |
| CN106015459A (en) * | 2016-06-16 | 2016-10-12 | 南京航空航天大学 | Centrifugal actuator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130005064A (en) * | 2011-07-05 | 2013-01-15 | 현대중공업 주식회사 | Vibration reduction device |
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2017
- 2017-10-27 CN CN201711029409.6A patent/CN109723757B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9197112B2 (en) * | 2011-06-30 | 2015-11-24 | Hanning Elektro-Werke Gmbh & Co. Kg | Device for dynamic balancing of a rotating component of a centrifuge |
| DE102012111614A1 (en) * | 2012-11-29 | 2014-06-18 | Fev Gmbh | Device for actively manipulating moment of inertia of drive train, has additional mass coupled or decoupled to gear element of gear box of drive train, when transmitting torque in power flow of gear box |
| CN103216577A (en) * | 2013-04-01 | 2013-07-24 | 南京航空航天大学 | Centrifugal actuator and control method thereof |
| CN105508505A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Centrifugal actuator adopting bevel gear reversing |
| CN105508501A (en) * | 2014-09-26 | 2016-04-20 | 中国航空工业第六一八研究所 | Centrifugal type actuator for reversing cylindrical gear |
| CN106015459A (en) * | 2016-06-16 | 2016-10-12 | 南京航空航天大学 | Centrifugal actuator |
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