CN201699630U - Magnetic suspension controller - Google Patents
Magnetic suspension controller Download PDFInfo
- Publication number
- CN201699630U CN201699630U CN2010201741056U CN201020174105U CN201699630U CN 201699630 U CN201699630 U CN 201699630U CN 2010201741056 U CN2010201741056 U CN 2010201741056U CN 201020174105 U CN201020174105 U CN 201020174105U CN 201699630 U CN201699630 U CN 201699630U
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- CN
- China
- Prior art keywords
- magnetic suspension
- controller
- subtracter
- vortex flow
- compensation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a magnetic suspension controller capable of avoiding vortex eddy effect of an iron core, comprising a system input end, a subtractor electrically connected with the system input end, a controller electrically connected with the subtractor, a driving suspension system electrically connected with the controller and a sensor electrically connected between the driving suspension system and the subtractor. The controller comprises an eddy current compensation section and a magnetic suspension compensation section. Compared with the prior art, the magnetic suspension controller has the benefits of greatly improving the performance of a magnetic suspension system and leading the reliable and stable control to be realized.
Description
Technical field
The utility model relates to a kind of magnetic suspension controller, especially relates to a kind of magnetic suspension controller that can avoid the iron core eddy current effects, relates to magnetic drive and magnetic levitation technology field, relates in particular to the application of using conductive soft magnetic material.
Background technology
Most of magnetic drivers as magnetic suspension, all are to produce corresponding magnetic field by electric current usually, and then generation power.At present, in order to strengthen magnetic field, generally use soft magnetic material.The soft magnetic material of most of high magnetic permeabilities, high saturated magnetic induction is a ferromagnetic material, and it has certain conductivity.Yet,, generally all can cause vortex flow when in this material during changes of magnetic field.According to Lenz's law, the variation that the magnetic flux that the vortex flow that causes produces is always resisted former magnetic flux.Like this, can cause the variation of magnetic force to lag behind the variation of electric current, show as the hysteresis (reaching as high as 46 degree) of phase place and the decay of amplitude (decay at 46 degree places original 1/10).Thereby cause inevitable system responses to lag behind, very big harm is arranged in comprising the system of this base part, for example in magnetic suspension system, this hysteresis can cause magnetic suspension system to stablize.Magnetic suspension system is this unstable second order system as-180 degree.Proportional-plusderivative controller is adopted in the control of magnetic suspension system traditionally.The proportional-plusderivative controller maximum provides the phase place of 90 degree (in fact can only arrive 60 degree) leading, the so in fact maximum phase margin that can only obtain 30 degree.46 degree if vortex flow lags behind, the then maximum phase margin that obtains is-16 degree, according to control theory, system can not stablize.
The utility model content
At the deficiencies in the prior art, the technical problem that the utility model solves provides a kind of magnetic suspension controller that can avoid the iron core eddy current effects, this controller is different from traditional usage ratio-differential control, be by using two links of magnetic suspension compensation and vortex flow compensation to act on simultaneously, finish maglev control, maglev phase margin is satisfied the demands.
The purpose of this utility model realizes by following technical scheme is provided:
A kind of magnetic suspension controller comprises:
One system input;
One electrically connects the driving suspension system of described controller;
One electrically connects the subtracter of described system input, and described system input input control signal is to described subtracter;
One electrically connects the transducer between described driving suspension system and the described subtracter, and described transducer is converted to sensor output signal with position signalling, and sends into described subtracter;
One electrically connects the controller of described subtracter, after described control signal is done difference by subtracter and sensor output signal, the result is sent into controller, described controller is controlled described result, and be output as drive signal, the described magnetic suspension system of described drive, and export its position signalling to transducer by described driving magnetic suspension system; Described controller comprises vortex flow compensation tache and magnetic suspension compensation tache.
Further, described magnetic suspension system comprises magnetic suspension dynamics link and magnetic suspension vortex flow link.
Further, vortex flow compensation tache compensation magnetic suspension vortex flow link, and this magnetic suspension compensation tache magnetic suspension dynamics link.
Further, vortex flow compensation and magnetic suspension compensation have limit N ω respectively
s, ω
sIt is the limit of system's closed loop.
Further, described N=12.4.
Compared with prior art, the beneficial effects of the utility model are: improved the performance of magnetic suspension system greatly, reliable and stable control is achieved.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the system schematic of the utility model preferred forms magnetic suspension controller.
Embodiment
Following with reference to description of drawings preferred forms of the present utility model.
As shown in Figure 1, in the utility model preferred forms, this can be avoided the magnetic suspension controller of iron core eddy current effects to comprise that a system input 1, electrically connects the controller 3 of the subtracter 2 of described system input 1, the described subtracter 2 of an electric connection, the driving suspension system 6 of the described controller 3 of an electric connection, and a transducer 9 that electrically connects between described driving suspension system 6 and the described subtracter 2.
Wherein, but described system input 1 input control signal, it is poor that this control signal is done by subtracter 2 and sensor output signal 12, and after the result sends into controller 3, after 3 couples of these results of the described controller of process control, be output as drive signal 10, this drive signal 10 can drive magnetic suspension system 6, this drives magnetic suspension system 6 exportable its position signallings 11 to transducer 9, and described position signalling 11 is converted to sensor output signal 12 and sends into subtracter 2 formation closed-loop controls via transducer 9.Wherein, described magnetic suspension system 6 comprises magnetic suspension dynamics link 8 and magnetic suspension vortex flow link 7; Described controller 3 comprises vortex flow compensation tache 4 and magnetic suspension compensation tache 5.These vortex flow compensation tache 4 compensation magnetic suspension vortex flow links 7, and these magnetic suspension compensation tache 5 magnetic suspension dynamics links 8.
What deserves to be mentioned is: vortex flow compensation 4 and magnetic suspension compensation 5 have limit N ω respectively
s, get the requirement that N=12.4 can take into account phase margin and control performance.
Although be the example purpose, preferred implementation of the present utility model is disclosed, but those of ordinary skill in the art will recognize that under situation about not breaking away from by the disclosed scope and spirit of the present utility model of appending claims, various improvement, increase and replacement are possible.
Claims (5)
1. magnetic suspension controller is characterized in that: comprises,
One system input;
One electrically connects the driving suspension system of described controller;
One electrically connects the subtracter of described system input, and described system input input control signal is to described subtracter;
One electrically connects the transducer between described driving suspension system and the described subtracter, and described transducer is converted to sensor output signal with position signalling, and sends into described subtracter;
One electrically connects the controller of described subtracter, after described control signal is done difference by subtracter and sensor output signal, the result is sent into controller, described controller is controlled described result, and be output as drive signal, the described magnetic suspension system of described drive, and export its position signalling to transducer by described driving magnetic suspension system; Described controller comprises vortex flow compensation tache and magnetic suspension compensation tache.
2. magnetic suspension controller as claimed in claim 1 is characterized in that: described magnetic suspension system comprises magnetic suspension dynamics link and magnetic suspension vortex flow link.
3. magnetic suspension controller as claimed in claim 2 is characterized in that: vortex flow compensation tache compensation magnetic suspension vortex flow link, and this magnetic suspension compensation tache magnetic suspension dynamics link.
4. magnetic suspension controller as claimed in claim 3 is characterized in that: vortex flow compensation and magnetic suspension compensation have limit N ω respectively
s
5. magnetic suspension controller as claimed in claim 4 is characterized in that: described N=12.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201741056U CN201699630U (en) | 2010-04-29 | 2010-04-29 | Magnetic suspension controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201741056U CN201699630U (en) | 2010-04-29 | 2010-04-29 | Magnetic suspension controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201699630U true CN201699630U (en) | 2011-01-05 |
Family
ID=43400875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201741056U Expired - Lifetime CN201699630U (en) | 2010-04-29 | 2010-04-29 | Magnetic suspension controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201699630U (en) |
-
2010
- 2010-04-29 CN CN2010201741056U patent/CN201699630U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |
|
| CX01 | Expiry of patent term |