CN205349484U - Electrodynamic type elastic plate actuator that initiatively insulates against sound - Google Patents
Electrodynamic type elastic plate actuator that initiatively insulates against sound Download PDFInfo
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- CN205349484U CN205349484U CN201620030675.5U CN201620030675U CN205349484U CN 205349484 U CN205349484 U CN 205349484U CN 201620030675 U CN201620030675 U CN 201620030675U CN 205349484 U CN205349484 U CN 205349484U
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- end cover
- coil
- outer magnetic
- magnetic conduction
- hub
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Abstract
An object of the utility model is to provide an electrodynamic type elastic plate actuator that initiatively insulates against sound, including an outer magnetic conduction section of thick bamboo, last bottom end cover, permanent magnet, upper and lower armature, going up lower pulley block spare, the permanent magnet is installed between upper and lower armature, becomes the magnetic circuit with outer magnetic conduction cylindric. From top to bottom armature is with the permanent magnet is cliied by last lower pulley block spare and through the bolt fastening, the active cell part of formation actuator. Active cell upper end installation flat spring, the flat spring outer end is arranged in between an upper end cover and the outer magnetic conduction section of thick bamboo. Magnetic conduction section of thick bamboo upper end outside is installed to the upper end cover, goes up the flat spring and fixes at upper end cover outside and between the magnetic conduction section of thick bamboo, and tip under the magnetic conduction section of thick bamboo is installed outside to the bottom end cover. Coil and coil are down pressed in the opposite direction winding respectively to outer magnetic conduction section of thick bamboo inner wall. The utility model discloses compact, the power output is big, work efficiency is higher, as long as the switch on just can the immediate shipment usefulness promptly, installation debug time when having reduced control.
Description
Technical field
The utility model relates to a kind of oise damping means, specifically electromagnetic actuator.
Background technology
Difference according to concrete control mode, Technique of Active Noise Control can be divided into active acoustic control and Active Force to control.Before the nineties in 20th century, active guidance system is generally adopted sound source (such as speaker) and produces secondary sound field and be controlled.Therefore, this Active control mode is referred to as active acoustic control, is also referred to as " eliminating the noise with sound ".The research of active acoustic control 20th century the mid-80 peak to the mid-90, outstanding with the research of the sound and vibration institute (ISVR) of Southampton University of Southampton, achievement in research is mainly used in boats and ships or the cabin of aircraft, automobile cab and some other work space environment.
In engineering reality, having quite a few noise is owing to structural vibration is radiation-induced.For this noise like, it is attempted to be controlled by by the method for active acoustic control.But theoretical study results shows, only under extremely low frequency, noise reduction can be obtained with a small amount of point sound source.If secondary structure vibration becomes more complex slightly, or driving frequency is somewhat higher, control acoustic radiation with point sound source and just become complex, effect can not be satisfactory, then people start to consider by an activeforce control structure vibratory response and then control structure acoustic radiation, and namely Active Force controls.Later, this control method is also referred to as " eliminating the noise with power ", i.e. active structural acoustical control (ActiveStructureAcousticControl is called for short ASAC), its advantage is when low and medium frequency, it is possible to more effective, more economical control structure acoustic radiation.Controlling actuator in ASAC system is power driving source, is used for reducing the vibration amplitude of vibration surface, changes the radiation efficiency of vibration surface, thus obtaining the effect reducing noise and vibration.
Active structural acoustical control system is mainly made up of three parts such as controller, sensor and actuator.Along with the development of signal processing technology, controller and sensor technology are ripe gradually, so that actuator becomes the key that can Active noise control system effectively be implemented.
According to different start principles, active structural acoustical control actuator generally includes electromagnetic type, piezoelectric type etc., wherein electromagnetic type because of its version simple, it is simple to realizing, be quick on the draw, reliability is high, obtains a lot of scholar's research and application.Electromagnetic actuator based on inertia mechanism is easily controllable, and the linearity is high, therefore comparatively conventional.
Name is called a kind of integrated form inertia electromagnetic actuator, and publication number is the patent of CN103791013A, and sensor and controller are integrated in actuator shell body by it, it is to avoid between traditional sensor, actuator and controller, wire connects the puzzlement brought.But electric actuator axial length described in this technical scheme is relatively big, and total quality is relatively big, is mounted laterally elastic plate impact bigger.Name is called a kind of amorphous alloy transformer noise impedance electromagnetic actuator, publication number is the patent of CN103050216A, its simple in construction, make with low cost, but electromagnetic actuator described in this technical scheme is dynamic to be only connected by flat spring between iron core with actuator base, lateral support is not enough, causes that flat spring is limited for service life.
Summary of the invention
The purpose of this utility model is in that to provide a kind of electrodynamic type elastic plate actively controlled for diesel engine noise actively to insulate against sound actuator.
The purpose of this utility model is achieved in that
This utility model one electrodynamic type elastic plate actively insulates against sound actuator, it is characterized in that: include outer magnetic conductive cylinder, upper end cover, bottom end cover, flat spring, axis, mover assembly, coil block, upper end cover is fixed on outer magnetic conductive cylinder, outer magnetic conductive cylinder is fixed on bottom end cover, the outboard end of flat spring is fixed between upper end cover and outer magnetic conductive cylinder, the upper end of axis is connected with the middle part of upper end cover, the bottom of axis is connected with the middle part of bottom end cover, and described mover assembly includes top sheave assembly, lower sheave assembly, permanent magnet, first magnet steel, second magnet steel, top sheave assembly includes slip up hub, top sheave, slip up hub is connected with the end inside flat spring, and top sheave is arranged on slip up hub, and lower sheave assembly includes downslide hub, lower sheave, downslide hub and slip up hub are fixed together, lower sheave is arranged on downslide hub, top sheave and lower sheave are all affixed on axis, permanent magnet is arranged between the first magnet steel and the second magnet steel and is jointly fixed on the outside of pulley assembly with the first magnet steel and the second magnet steel, and coil block includes coil, coil retainer, coil retainer is arranged in outer magnetic conductive cylinder and is positioned at the outside of mover assembly, and coil is wound around and is embedded in coil retainer.
This utility model can also include:
1, described coil includes two groups, and two groups of coil winding directions are contrary, be wound around equal turn numbers, be arranged symmetrically in the both sides up and down of coil retainer.
2, upper end cover and bottom end cover are provided with vent.
Advantage of the present utility model is in that:
(1) first, the elastic plate that this utility model provides is sound insulation actuator actively, and magnetic energy utilization rate is high, reducing operating current thus decreasing actuator heating, being provided with vent, thus ensureing that actuator can work long hours；
(2) secondly, electromagnetic actuator of the present utility model, mover adopts pulley assembly, reduces friction, has less damping ratio, improves low-frequency range power output, and make actuator to be mounted laterally, add using method and the scope of actuator；
(3) last, electromagnetic actuator of the present utility model, adopt changeable type sheet metal spring, mode is adjustable, compact conformation, and overall dimensions and weight are little.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model；
Fig. 2 is top view of the present utility model；
Fig. 3 is sheet metal spring structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing citing, this utility model is described in more detail:
In conjunction with Fig. 1～3, this utility model includes annular permanent magnet, upper and lower two pieces of annular magnetic steels and outer magnetic conductive cylinder.Permanent magnet, magnet steel and pulley assembly composition mover mass fraction, this part is contacted with actuator axis by guide wheel, and is connected with outer magnetic conductive cylinder by sheet metal spring.Also including coil and coil retainer in the present embodiment, coil is wound around and is embedded in coil retainer, and the outer wall of loop coil retainer coordinates with the inwall of outer magnetic conductive cylinder.When, after coil electricity, mover mass fraction moves reciprocatingly under the electromagnetic excitation power effect of hot-wire coil, thus producing active force effectively implement the control to controlled device, reduce the response of controlled device.
Mover assembly includes: permanent magnet 3, upper and lower two magnet steel 6 and pulley assembly 1, permanent magnet 3 is placed in the middle of upper and lower two magnet steel 6, and be connected with upper and lower two magnet steel, pulley assembly 1 is placed in permanent magnet 3 and the internal ring of magnet steel 6, not only playing motion guide effect, also acting as fixed permanent magnet 3 and the effect of magnet steel 6, permanent magnet 3 and magnet steel 6 is all cirque structure；Pulley assembly 1 is divided into upper and lower two parts, and directly connects together with sheet metal spring 11；Flat spring 12 is placed between upper end cover 11 and outer magnetic conductive cylinder 9, and coil 10 is wound around and is embedded in coil retainer 8, and the outer wall of loop coil retainer 8 coordinates with the inwall of outer magnetic conductive cylinder 9, is placed between upper end cover 11 and bottom end cover 7.
In the present embodiment, flat spring 12 and pulley assembly 1 are threaded connection, two parts up and down of pulley assembly 1 are bolted, upper and lower two magnet steel 6 and permanent magnet 3 are fixedly clamped by pulley assembly about 1 two parts, upper end cover 11, flat spring 12 are bolted with outer magnetic conductive cylinder 9, bottom end cover 7 is connected also by bolt with outer magnetic conductive cylinder 9, and axis 5 and upper end cover 11, bottom end cover 7 are all threaded connection.Actuator top view (upper end cover direction) is as shown in Figure 2.
Owing to coil 10 is in the magnetic circuit formed by permanent magnet 3, upper lower magnetic steel 6 and outer magnetic conductive cylinder 9, when coil 10 passes to the alternating current of change, by Lorentz force action in magnetic field, permanent magnet 3 can be subject to interaction force and drive mover assembly to move along axis 5, in motor process, mover assembly is subject to the restoring force of flat spring 12 and returns to home position, so moving reciprocatingly, thus realizing the active of vibration is controlled, reducing the response of controlled device.
This utility model provides a kind of elastic plate actively to insulate against sound actuator, comprising: outer magnetic conductive cylinder, upper and lower end cap, mover assembly and coil block, wherein:
Outer magnetic conductive cylinder, upper and lower end cap and coil block are stationary components, mover assembly is mobile component, being connected by sheet metal spring between mover assembly with outer magnetic conductive cylinder, mover assembly moves reciprocatingly under the driving of described coil block, it is achieved the control to controlled device；Upper and lower side cap assemblies is for limiting the motion of described mover assembly；
Mover assembly includes upper and lower two blocks of armature, and coil block includes upper and lower two parts coil, all in symmetrical above and below.
Actuator also includes axis, and upper and lower end cap is linked together by axis.
Mover assembly includes: magnetic conductor, magnet steel and guide wheel assembly；Magnet steel is placed between two pieces of magnetic conductors；Guide wheel assembly moves along axis with magnet steel and maintenance mover for fixed magnetizer, and has the effect preventing leakage field；
Coil block includes: coil, coil retainer；Coil is wrapped on coil retainer, and two groups of coil winding directions are contrary, are wound around equal turn numbers, and coil block is between mover assembly and outer magnetic conductive cylinder；
Axis not only connects upper and lower end cap, is additionally operable to support the mover assembly that guide wheel assembly and guide wheel assembly connect.
Magnet steel is permanent magnet, and guide wheel assembly is connected by sheet metal spring with outer magnetic conductive cylinder, and in different setting angle situations, mover assembly quality is supported by sheet metal spring and axis.
It is bolted between sheet metal spring and outer magnetic conductive cylinder；It is threaded connection between sheet metal spring and mover assembly.
Acceleration transducer, is used for measuring controlled elastic plate acceleration responsive；Acceleration transducer, is positioned on described bottom end cover outer shroud.Upper and lower end cap is provided with vent, for heat radiation to improve long-time serviceability.
Outer magnetic conductive cylinder, upper and lower end cap and coil block are stationary components, and mover assembly is mobile component, is connected by sheet metal spring between mover assembly with outer magnetic conductive cylinder, and mover assembly moves reciprocatingly under the driving of coil block, it is achieved the control to controlled device；Upper and lower side cap assemblies is for limiting the motion of mover assembly；
Mover assembly includes upper and lower two blocks of armature, and coil block includes upper and lower two parts coil, all in symmetrical above and below.
Upper and lower end cap is linked together by described axis.
Mover assembly includes: magnetic conductor, magnet steel and guide wheel assembly；Magnet steel is placed between two pieces of magnetic conductors；Guide wheel assembly moves along axis with magnet steel and maintenance mover for fixed magnetizer, and has the effect preventing leakage field；
Coil block includes: coil, coil retainer；Coil is wrapped on coil retainer, and two groups of coil winding directions are contrary, are wound around equal turn numbers, and coil block is between mover assembly and outer magnetic conductive cylinder；
Axis not only connects upper and lower end cap, is additionally operable to support the mover assembly that guide wheel assembly and guide wheel assembly connect.
Magnet steel is permanent magnet.
Guide wheel assembly is connected by sheet metal spring with outer magnetic conductive cylinder, and in different setting angle situations, mover assembly quality is supported by sheet metal spring and axis.
It is bolted between sheet metal spring and outer magnetic conductive cylinder；
It is threaded connection between sheet metal spring and mover assembly.
Acceleration transducer, is positioned on bottom end cover outer shroud, is used for measuring controlled elastic plate acceleration responsive；
Upper and lower end cap is provided with vent, for heat radiation to improve long-time serviceability.
Claims (3)
1. electrodynamic type elastic plate actively insulates against sound an actuator, it is characterized in that: include outer magnetic conductive cylinder, upper end cover, bottom end cover, flat spring, axis, mover assembly, coil block, upper end cover is fixed on outer magnetic conductive cylinder, outer magnetic conductive cylinder is fixed on bottom end cover, the outboard end of flat spring is fixed between upper end cover and outer magnetic conductive cylinder, the upper end of axis is connected with the middle part of upper end cover, the bottom of axis is connected with the middle part of bottom end cover, and described mover assembly includes top sheave assembly, lower sheave assembly, permanent magnet, first magnet steel, second magnet steel, top sheave assembly includes slip up hub, top sheave, slip up hub is connected with the end inside flat spring, and top sheave is arranged on slip up hub, and lower sheave assembly includes downslide hub, lower sheave, downslide hub and slip up hub are fixed together, lower sheave is arranged on downslide hub, top sheave and lower sheave are all affixed on axis, permanent magnet is arranged between the first magnet steel and the second magnet steel and is jointly fixed on the outside of pulley assembly with the first magnet steel and the second magnet steel, and coil block includes coil, coil retainer, coil retainer is arranged in outer magnetic conductive cylinder and is positioned at the outside of mover assembly, and coil is wound around and is embedded in coil retainer.
2. a kind of electrodynamic type elastic plate according to claim 1 actively insulates against sound actuator, it is characterized in that: described coil includes two groups, two groups of coil winding directions on the contrary, be wound around equal turn numbers, be arranged symmetrically in the both sides up and down of coil retainer.
3. a kind of electrodynamic type elastic plate according to claim 1 and 2 actively insulates against sound actuator, it is characterized in that: upper end cover and be provided with vent on bottom end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030675.5U CN205349484U (en) | 2016-01-13 | 2016-01-13 | Electrodynamic type elastic plate actuator that initiatively insulates against sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030675.5U CN205349484U (en) | 2016-01-13 | 2016-01-13 | Electrodynamic type elastic plate actuator that initiatively insulates against sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349484U true CN205349484U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620030675.5U Withdrawn - After Issue CN205349484U (en) | 2016-01-13 | 2016-01-13 | Electrodynamic type elastic plate actuator that initiatively insulates against sound |
Country Status (1)
| Country | Link |
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| CN (1) | CN205349484U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464772A (en) * | 2016-01-13 | 2016-04-06 | 哈尔滨工程大学 | Electric active sound isolation actuator for elastic plate |
| CN108280249A (en) * | 2017-12-18 | 2018-07-13 | 西北工业大学 | Wave-number domain error sensing strategy construction method for the active sound insulating structure of multilayer |
-
2016
- 2016-01-13 CN CN201620030675.5U patent/CN205349484U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464772A (en) * | 2016-01-13 | 2016-04-06 | 哈尔滨工程大学 | Electric active sound isolation actuator for elastic plate |
| CN105464772B (en) * | 2016-01-13 | 2017-12-19 | 哈尔滨工程大学 | A kind of electrodynamic type elastic plate actively insulates against sound actuator |
| CN108280249A (en) * | 2017-12-18 | 2018-07-13 | 西北工业大学 | Wave-number domain error sensing strategy construction method for the active sound insulating structure of multilayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20171219 |