CN1219162C - Magnetic current flowing deformation vibration-damping brake system - Google Patents
Magnetic current flowing deformation vibration-damping brake system Download PDFInfo
- Publication number
- CN1219162C CN1219162C CN 03141795 CN03141795A CN1219162C CN 1219162 C CN1219162 C CN 1219162C CN 03141795 CN03141795 CN 03141795 CN 03141795 A CN03141795 A CN 03141795A CN 1219162 C CN1219162 C CN 1219162C
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- damper
- magnetic rheological
- brake
- direct
- damping
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- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a damping and braking system for magnetic rheological fluid. The present invention mainly comprises a brake switch, an ammeter, a rotary magnetic rheological fluid brake, a direct-acting magnetic rheological fluid dampener, a variable resistor and a direct-current power supply, wherein the rotary magnetic rheological fluid brake and the direct-acting magnetic rheological fluid dampener are combined into a parallel circuit after being respectively connected with the variable resistance in series and then are combined into the damping and braking system for magnetic rheological fluid by being connected with the direct-current power supply, the brake switch, the ammeter and the variable resistor in series. When the brake switch is turned off, a magnetic field is generated by powering on an electromagnetic coil of the brake and the damper. A damping moment and the magnitude of damping force provided by the brake and the damper can be effectively changed by adjusting the intensity of the electromagnetic field of the brake and the damper, and synchronous damping action to braked mechanisms or machines can be reached.
Description
Technical field
What the present invention relates to is a kind of vibration damping braking system, particularly a kind of by the magnetic flow liquid vibration damping braking system of brake switch realization to damper and break synchronization control, belongs to engineering vibrotechnique field.
Background technique
Magnetic flow liquid is made up of base fluid, the magnetic material that is suspended in base fluid and stabilizer, has the characteristic and the liquid fluidity of magnetic material.Adding under the action of a magnetic field, rapid change can take place in the rheological properties of magnetic flow liquid, and rheological properties changes along with the variation of externally-applied magnetic field intensity.The variation of the apparent viscosity of magnetic flow liquid be continuous, reversible, rapidly and be easy to control, the apparent viscosity that is magnetic flow liquid has stepless adjustable characteristic, thereby make magnetic flow liquid obtain application corresponding, and become an important branch of current intellectual material research in fields such as automobile, machinery, building, medical treatment.
Magnetic rheological liquid damper is a kind of important application aspect of magnetic flow liquid, can be used for the damping and the rigidity of Control Engineering mechanical system.It is little that magnetic rheological liquid damper has a volume, the worker consumes few, damping force is bigger, dynamic range is wide, frequency response height and the advantage that adapts to face width, particularly magnetic rheological liquid damper has been avoided traditional passive type damper bad adaptability and active spoiler control algorithm complexity and controller stability problem, is considered to desirable replacement device active, the passive type control unit.
Break can make mechanism or the machine in the running slow down rapidly, stop and keeping halted state; Sometimes also as the motion speed of adjusting or limting mechanism or machine, be the vitals that guarantees mechanism or machine trouble free service.Magneto-rheologic liquid brake also is a kind of important application aspect of magnetic flow liquid.
The employing break makes the mechanism of operation or machine slow down rapidly, stop or keeping halted state, tend to because structure or machine vibration that the rapid deceleration of structure that is braked or machine causes being braked aggravate, thereby machinery or whole system are had a negative impact, thereby in to the structure of operation or machine brake, will take necessary vibration reducing measure.Traditional vibration reducing measure comprises: passive type damper vibration damping and active spoiler vibration damping.Passive type damper vibration damping method is that simple damper is installed on mechanism that is braked or machine, and the characteristic parameter of this damper is immutable, thereby the bad adaptability of such damper; The active spoiler vibration damping then needs to set up a feedback mechanism, when the structure operation that is braked changes, sensor is given control system with feedback information, processing instruction being passed to damper after control system is handled makes damper produce corresponding damping force again, complicated and the controller poor stability of active spoiler control algorithm, and exist the problem of time lag.
In prior art, Shang Weiyou is to the magnetic flow liquid vibration damping braking system of damper and break synchronization control.
Summary of the invention
For deficiency and the defective that overcomes prior art, to the mechanism of operation or the Realization by Machine purpose of vibration damping braking effectively, the present invention has designed and has a kind ofly realized magnetic flow liquid vibration damping braking system to damper and break synchronization control by brake switch.
The present invention mainly comprises DC electrical source, brake switch, ammeter, rotary magnetic rheological liquid break, direct-acting type magnetic rheological liquid damper, variable resistor etc.Form parallel circuit after rotary magnetic rheological liquid break, direct-acting type magnetic rheological liquid damper are connected with variable resistor respectively, be composed in series magnetic flow liquid vibration damping braking system with DC electrical source, brake switch, ammeter, variable resistor again.
The number of turn of voltage that DC electrical source applies and damper and break electromagnetic coil has tangible influence to magnetic flux, thereby, also indirect decision the present invention damping torque and the damping force that can bear, the voltage that DC electrical source applies is big, the damping force that can bear of damper, break is just big with damping torque more at most for the number of turn of electromagnetic coil, can control and change the apparent viscosity of magnetic flow liquid effectively thereby the number of turn of voltage that DC electrical source applies and electromagnetic coil should guarantee the enough magnetic intensities of electromagnetic coil generation.
Requirement to direct-acting type magnetic rheological liquid damper and rotary magnetic rheological liquid break: should be as far as possible will by electromagnetic coil produce magnetic circuit closed in damper and brake structural inside, guarantee that the magnetic field that electromagnetic coil produces acts on the magnetic flow liquid in the concentrated area as far as possible, thereby reduce the electric current of electromagnetic coil, improved magnetorheological efficient, guaranteed that damper, break can provide bigger damping force and damping torque.
Variable resistor is used for the resistance in the regulating circuit, thereby reaches the purpose of indirect regulation electric current; Ammeter then plays the effect of display circuit electric current.
The present invention has overcome traditional passive type damper bad adaptability and problems such as active spoiler control algorithm complexity, controller poor stability and time lag, can carry out the vibration damping braking to mechanism or the machine that moves effectively, have high economic benefit and social benefit.
Description of drawings
Fig. 1 is the schematic representation of magnetic flow liquid vibration damping braking system.
Among the figure, 1 is that brake switch, 2 is that ammeter, 3 is that rotary magnetic rheological liquid break, 4 is that direct-acting type magnetic rheological liquid damper, 5,7,8 is that variable resistor, 6 is DC electrical source.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
As shown in Figure 1, the present invention mainly comprises: brake switch 1, ammeter 2, rotary magnetic rheological liquid break 3, direct-acting type magnetic rheological liquid damper 4, variable resistor 5,7,8, DC electrical source 6.After connecting with variable resistor 7,8 respectively, rotary magnetic rheological liquid break 3, direct-acting type magnetic rheological liquid damper 4 form parallel circuit; Brake switch 1 is connected on the two ends of the parallel circuit that magneto-rheologic liquid brake 3 and magnetic rheological liquid damper 4 form respectively with variable resistor 5 after lead and ammeter 2 are in series; Be composed in series magnetic flow liquid vibration damping braking system with DC electrical source 6 again.
During application, the piston of the two ends of the rotating shaft of rotary magnetic rheological liquid break 3, direct-acting type magnetic rheological liquid damper 4 and the two ends of connecting rod and structure to be braked are joined; When brake switch 1 is in opening state, the electromagnetic coil of rotary magnetic rheological liquid break 3 and direct-acting type magnetic rheological liquid damper 4 does not have magnetic field and produces, at this moment, this vibration damping braking system does not provide damping torque and damping force, thereby machine or the mechanism that will brake can freely be turned round; When brake switch 1 closure, DC electrical source 6 is given the electromagnetic coil energising of rotary magnetic rheological liquid break 3 and direct-acting type magnetic rheological liquid damper 4, make electromagnetic coil produce magnetic field, under the effect in magnetic field, the rapid class of the magnetic flow liquid of rotary magnetic rheological liquid break 3 and direct-acting type magnetic rheological liquid damper 4 is solidified, the flowability of magnetic flow liquid is weakened, form chain thing or decorating film, shear resistance improves, be that rotary magnetic rheological liquid break 3 available damping torques increase, thereby the operation that is braked mechanism or machine is controlled; Direct-acting type magnetic rheological liquid damper 4 also provides damping force synchronously, reaches being braked the damping effect of mechanism or machine; Control the intensity of rotary magnetic rheological liquid break 3 and direct-acting type magnetic rheological liquid damper 4 electromagnetic fields effectively according to engineering practical adjustments variable resistor 5,7,8, make the apparent viscosity of magnetic flow liquid satisfy corresponding damping torque and damping force requirement, thereby reach being braked the purpose of mechanism or machine vibration damping braking.
Claims (1)
1. magnetic flow liquid vibration damping braking system, mainly comprise brake switch (1), ammeter (2), rotary magnetic rheological liquid break (3), direct-acting type magnetic rheological liquid damper (4), variable resistor (5), (7), (8), DC electrical source (6), it is characterized in that, form parallel circuit after rotary magnetic rheological liquid break (3), direct-acting type magnetic rheological liquid damper (4) are connected with variable resistor (7), (8) respectively; Brake switch (1) is serially connected in the two ends of the parallel circuit of magneto-rheologic liquid brake (3) and magnetic rheological liquid damper (4) composition respectively with variable resistor (5) after lead and ammeter (2) are in series; Be composed in series magnetic flow liquid vibration damping braking system with DC electrical source (6) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141795 CN1219162C (en) | 2003-07-24 | 2003-07-24 | Magnetic current flowing deformation vibration-damping brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141795 CN1219162C (en) | 2003-07-24 | 2003-07-24 | Magnetic current flowing deformation vibration-damping brake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482379A CN1482379A (en) | 2004-03-17 |
| CN1219162C true CN1219162C (en) | 2005-09-14 |
Family
ID=34155460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03141795 Expired - Fee Related CN1219162C (en) | 2003-07-24 | 2003-07-24 | Magnetic current flowing deformation vibration-damping brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1219162C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334081B (en) * | 2007-06-29 | 2012-06-06 | 联想(北京)有限公司 | Semi- initiative vibration isolation buffering device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101184283B1 (en) * | 2010-11-30 | 2012-09-21 | 현대자동차주식회사 | A damping-control device filled with the Magnetorheological fluid and an engine mount equipped with thereof |
| CN105667240A (en) * | 2014-11-14 | 2016-06-15 | 孙欣 | Giant magnetostictive vehicle suspension shock absorption device |
| CN111674220B (en) * | 2020-05-08 | 2022-09-13 | 江苏大学 | Small-delay numerical control current source circuit for magnetorheological damper and parameter determination method thereof |
| CN114233794B (en) * | 2021-12-09 | 2023-08-22 | 青岛理工大学 | Displacement sectional automatic control type magneto-rheological damper |
-
2003
- 2003-07-24 CN CN 03141795 patent/CN1219162C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334081B (en) * | 2007-06-29 | 2012-06-06 | 联想(北京)有限公司 | Semi- initiative vibration isolation buffering device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1482379A (en) | 2004-03-17 |
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