JPH04102716A - Magnetic bearing device - Google Patents
Magnetic bearing deviceInfo
- Publication number
- JPH04102716A JPH04102716A JP2219696A JP21969690A JPH04102716A JP H04102716 A JPH04102716 A JP H04102716A JP 2219696 A JP2219696 A JP 2219696A JP 21969690 A JP21969690 A JP 21969690A JP H04102716 A JPH04102716 A JP H04102716A
- Authority
- JP
- Japan
- Prior art keywords
- displacement
- rotor shaft
- magnetic bearing
- displacement sensor
- electromagnet
- Prior art date
- 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.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 92
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000005284 excitation Effects 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 abstract description 4
- 235000012489 doughnuts Nutrition 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/048—Active magnetic bearings for rotary movement with active support of two degrees of freedom, e.g. radial magnetic bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、ロータ軸を支持する磁気軸受装置に関し、
特にロータ軸の振動モードにおける磁気軸受の発振を防
止する技術に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a magnetic bearing device that supports a rotor shaft.
In particular, the present invention relates to a technique for preventing oscillation of a magnetic bearing in a vibration mode of a rotor shaft.
（従来の技術）
従来、この種の磁気軸受装置は例えば第７図に示す如く
、ロータ軸１の外周にラジアル方向用変位センサ２とラ
ジアル方向用電磁石３とが互いに間隔をおいて設けられ
ており、このような磁気軸受装置によれば変位センサ２
でロータ軸１の変位量を変位信号として検出し、その変
位信号に基づいて電磁石３を励磁することによりロータ
軸１を所定の位置で支持するように構成されている。(Prior Art) Conventionally, in this type of magnetic bearing device, as shown in FIG. 7, for example, a radial displacement sensor 2 and a radial electromagnet 3 are provided on the outer periphery of a rotor shaft 1 at a distance from each other. According to such a magnetic bearing device, the displacement sensor 2
The displacement amount of the rotor shaft 1 is detected as a displacement signal, and the electromagnet 3 is excited based on the displacement signal, thereby supporting the rotor shaft 1 at a predetermined position.
また、上記変位センサ２は第８図に示す如く、コア本体
４の＋ｘ、 −ｘ、 ＋ｙ、および−Ｙ方向にコア４ａ
、４ｂ、４ｃ、４ｄを設け、それらのコアにそれぞれコ
イル５を巻装したもので、一方上記電磁石３にあっては
第９図に示す如く、コア本体６に＋Ｘ、−Ｘ方向用の一
対のコア６ａ、６ｂおよび＋Ｙ、−Ｙ方向用の一対のコ
ア６ｃ、６ｄを設け、それらのコアにそれぞれコイル７
が巻装されている。Furthermore, as shown in FIG.
, 4b, 4c, and 4d, and a coil 5 is wound around each core.On the other hand, in the electromagnet 3, as shown in FIG. cores 6a and 6b and a pair of cores 6c and 6d for the +Y and -Y directions are provided, and a coil 7 is attached to each of these cores.
is wrapped.
（発明が解決しようとする課題）
ところで、上記のように磁気軸受装置で支持されるロー
タ軸１にあっては、例えば第７図Ａ１Ａ１線で示す如く
、ロータ軸１の固有振動数で曲げ振動が生ずることは避
けられない。(Problem to be Solved by the Invention) By the way, in the rotor shaft 1 supported by the magnetic bearing device as described above, bending vibration occurs at the natural frequency of the rotor shaft 1, as shown for example by line A1A1 in FIG. It is inevitable that this will occur.
しかしながら、従来の磁気軸受装置にあっては上記の如
く、変位センサ２と電磁石３とが互いに間隔をおいてロ
ータ軸１の外周に単に設けられているのみであるため、
これにより変位センサ２は変位検出点が平面α上に、−
刃型磁石３は力の作用点ｆが上記甲面αとは異なる平面
β十にそれぞれ設定されている。However, in the conventional magnetic bearing device, as described above, the displacement sensor 2 and the electromagnet 3 are simply provided on the outer periphery of the rotor shaft 1 at a distance from each other.
As a result, the displacement sensor 2 has a displacement detection point on the plane α, -
In each of the blade-shaped magnets 3, a force application point f is set on a plane β0 different from the upper surface α.
そのため、上記磁気軸受装置において第７図に示す如く
、上述のような曲げ振動における振動モトの節０１が、
七記両平面α、βの間に生ずるような構造上の制約を受
ける場合、変位検出点と力の作用点がその節０１をはざ
むので、変位センサ２の変位信号と電磁石３へ出力され
る励磁電流との位相が１−８０度ずれ、これによりロー
タ軸１を正常に制御することが不可能となり、磁気軸受
が発振するという問題点があった。Therefore, in the magnetic bearing device, as shown in FIG. 7, the vibration point 01 in the above-mentioned bending vibration is
When subjected to structural constraints such as those occurring between the two planes α and β in Section 7, the displacement detection point and the point of force application sandwich the node 01, so that the displacement signal of the displacement sensor 2 and the output to the electromagnet 3 are There is a problem that the phase of the magnetic bearing is 1 to 80 degrees out of phase with the excitation current, making it impossible to control the rotor shaft 1 normally and causing the magnetic bearing to oscillate.
（課題を解決するだめの手段）
この発明は一ト述の事情に鑑みてなされたもので、その
目的とするところは、ロータ軸の曲げ振動による磁気軸
受の発振を防止することにあり、上記目的を達成−４る
ためにこの発明は、ロータ軸の変位を変位信号として検
出する変位センサと、この変位センサの変位信！彊、二
基づいて出力される励磁電流で一１ユ記ロータ軸を所定
の位置へ支持する電磁石とを備える磁気軸受装置であっ
て、
上記変位センサの変位検出点と上記電磁石における力の
作用点とを等価的に同一甲面−Ｌにそれぞれ設定したこ
とを特徴とする。(Means for solving the problem) This invention was made in view of the above-mentioned circumstances, and its purpose is to prevent the oscillation of the magnetic bearing due to the bending vibration of the rotor shaft. In order to achieve the objective-4, the present invention provides a displacement sensor that detects the displacement of the rotor shaft as a displacement signal, and a displacement signal of the displacement sensor. A magnetic bearing device comprising: an electromagnet that supports the rotor shaft in a predetermined position with an excitation current output based on the displacement sensor, and a displacement detection point of the displacement sensor and a force application point on the electromagnet. and are equivalently set on the same instep -L.
（作用）
この発明によれば、変位センサの変位検出点と電磁石に
おける力の作用点とが等価的に同−甲面上にそれぞれ設
定されるように作用する。(Function) According to the present invention, the displacement detection point of the displacement sensor and the point of force application in the electromagnet are set equivalently on the same instep surface.
（実施例）
以下、この発明に係る磁気軸受装置の実施例について、
第１図ないし第６図を用いて詳細に説明する。(Example) Examples of the magnetic bearing device according to the present invention will be described below.
This will be explained in detail using FIGS. 1 to 6.
第１図に示すものは、磁気軸受装置の第１の実施例を示
すもので、ロータ軸外周にラジアル方向用の電磁石が配
設されていることは従来と同様なため、同一部材には同
一符号を付１．てその詳細説明は省略する。The one shown in Fig. 1 shows the first embodiment of the magnetic bearing device, and since it is the same as the conventional one in that the electromagnet for the radial direction is arranged on the outer periphery of the rotor shaft, the same members are identical. Add sign 1. Therefore, detailed explanation thereof will be omitted.
この磁気軸受装置は、第１図に示す如く、電磁石３の１
−下方向にそれぞれ変位センサ８，９を備えており、そ
れらの変位センサ８，９によれば電磁石３における力の
作用点ｆ、 ｆを有する平面β上の０２点に関Ｉ〜、
互いに点対称となる平面ａおよび平面すに配設するよう
構成されている。This magnetic bearing device has one of the electromagnets 3 as shown in FIG.
- Displacement sensors 8 and 9 are provided in the downward direction, and according to these displacement sensors 8 and 9, points I to 02 on the plane β having the points of force f and f on the electromagnet 3,
It is configured to be disposed on planes a and s that are point symmetrical to each other.
また、上記変位センサ８は第２図（ａ）に示す如く、半
ドーナツ状コア本体］、０の＋Ｘａ方向および＋Ｙａ方
向にそれぞれコア１０ａ、１０ｂを設け、それらのコア
１０ａ、１０ｂにそれぞれ」−Ｘａ方向用コイル１］−
ａおよび＋Ｙａ方向用コイルｌｌｂを巻装置７たもので
、一方上記変位センサ９は第２図（１））に示す如く、
半ドーナツ状コア本体１２の−ｘｂ方向および−Ｙｂ方
向にそれぞれコア１２ａ、１２ｂを設げ、それらのコア
１２ａ、１２ｂにはそれぞれ−ｘｂ方向用コイル１３ａ
および−ｙｂ方向用コイル１３ｂが巻装されている。Further, as shown in FIG. 2(a), the displacement sensor 8 has a half-doughnut-shaped core body, and cores 10a and 10b are provided in the +Xa direction and +Ya direction of 0, respectively. Coil 1 for Xa direction]-
The coils llb for the a and +Ya directions are wound by a winding device 7, and the displacement sensor 9 is, as shown in FIG. 2 (1)),
Cores 12a and 12b are provided in the -xb direction and -Yb direction of the semi-doughnut-shaped core body 12, respectively, and the -xb direction coils 13a are provided in these cores 12a and 12b, respectively.
And a coil 13b for the -yb direction is wound.
次に、上記の如く構成された変位センサ８，９の電気回
路部分について、第３図を用いて説明する。Next, the electric circuit portion of the displacement sensors 8 and 9 constructed as described above will be explained using FIG. 3.
これらの変位センサ８，９は第３図に示す如く、＋ Ｘ
ａ方向用コイルｌｌａと−ｘｂ方向用コイル１３ａと
が直列接続されており、この各コイル１１ａ、１３ａに
よれば発振器１４．１４から出力される高周波の電圧が
印加されるとともに、ロタ輔１が変位すると、その変位
に応じて各コイル１１ａ、１３ａのインダクタンスが変
化して、−を記高周波の振幅を変調するもので、この変
調された高周波は変位信号としてコイルｌｌａ、１３ａ
の直列接続点よりセンサ回路１５へ出力されるように構
成されている。These displacement sensors 8, 9 are connected to +X as shown in FIG.
The a-direction coil lla and the -xb-direction coil 13a are connected in series, and each coil 11a, 13a receives the high frequency voltage output from the oscillator 14, 14, and the When the coils 11a and 13a are displaced, the inductance of each coil 11a and 13a changes according to the displacement, and the amplitude of the high frequency wave is modulated.This modulated high frequency wave is transmitted as a displacement signal to the coils 11a and 13a.
It is configured to be output to the sensor circuit 15 from the series connection point of.
また、センサ回路１５は上記変位信号を直流電圧に変換
して電圧信号を出力するもので、この電圧信号によれば
図示（７ない位相補償回路、及びパワーアンプを介［７
て電磁石を励磁して、これによりロータ軸１を所定の位
置で支持するように構成されている。Further, the sensor circuit 15 converts the displacement signal into a DC voltage and outputs a voltage signal.
The rotor shaft 1 is configured to be supported at a predetermined position by exciting an electromagnet.
一方、十Ｙａ方向用コイル］、〕ｂおよび−Ｙｂ方向用
コイル１３ｂにあっては、互いに直列接続され上記と同
様にセンサ回路へ変位信号を出力するように構成されて
いる。On the other hand, the coils 13b for the 10-Ya direction, ]b, and the -Yb direction are connected in series with each other and are configured to output a displacement signal to the sensor circuit in the same manner as described above.
したがって、このような構成によれば、第１図Ａ２−Ａ
２線で示すようにロータ軸１が変位して、その変位ΔＸ
ａ、 Δｘｂを各変位センサ８，９が検出すると、上記
の如くセンサ回路１５に出力される変位信号は、式（１
）に示す如く各変位ΔＸａ、Δｘｂの平均値ΔＸａｂと
なり、この平均値ΔＸａｂは平面β−ヒでロータ軸１が
変位したものと同一であるから、各変位センサの変位検
出点は、等価的に平面βに存在することになる。一方、
電磁石３における力の作用点ｆ、 ｆは、平面β上に
設定されているので、上記変位検出点と、上記力の作用
点ｆ、 ｆは同一平面β上に設定されている。Therefore, according to such a configuration, FIG. 1 A2-A
The rotor shaft 1 is displaced as shown by the two lines, and the displacement ΔX
When each displacement sensor 8, 9 detects a and Δxb, the displacement signal outputted to the sensor circuit 15 as described above is expressed by the equation (1
), the average value ΔXab of each displacement ΔXa, Δxb is obtained. Since this average value ΔXab is the same as the displacement of the rotor shaft 1 on the plane β-H, the displacement detection point of each displacement sensor is equivalently It will exist on the plane β. on the other hand,
Since the points of force f, f on the electromagnet 3 are set on the plane β, the displacement detection point and the points of force f, f are set on the same plane β.
（ΔＸａ＋ΔＸｂ）／２＝ΔＸａｂ・（１）第４図に示
すものは、磁気軸受装置の第２の実施例を示すもので、
この磁気軸受装置は第１の実施例における変位センサ８
，９に代えて、第８図に示すものと同形状の変位センサ
１６，１７を備えており、その変位センサ１６，１７に
よれば電磁石３における力の作用点ｆ、 ｆを有する
平面βに関し、互いに面対称となる平面ａおよび平面す
上にそれぞれ配設するよう構成されている。(ΔXa+ΔXb)/2=ΔXab・(1) What is shown in FIG. 4 shows a second embodiment of the magnetic bearing device.
This magnetic bearing device is the displacement sensor 8 in the first embodiment.
, 9 are provided with displacement sensors 16 and 17 having the same shape as shown in FIG. , are arranged on planes a and 2, respectively, which are plane symmetrical to each other.
また、上記変位センサ１６は＋Ｘａ方向用コイル１８ａ
および−Ｘａ方向用コイル１８ｂを、力変位センサ１７
は＋ｘｂ方向用コイル１９ａおよび−ｘｂ方向用コイル
１９ｂを備えるもので、これらの各コイルは第５図に示
す如く、コイル１８ａ、コイル１９ａ、コイル１８ｂ、
コイル１９ｂの順に直列接続されており、これらのコイ
ルによれば第１の実施例と同様に、発振器１４．、．１
．４から出力される高周波の電圧が印加されるとともに
、コイル１９ａとコイル１８ｂとの直列接続点より変位
信号がセンサ回路１５へ出力されるように構成されてい
る。Further, the displacement sensor 16 has a +Xa direction coil 18a.
and -Xa direction coil 18b, force displacement sensor 17
is equipped with a coil 19a for the +xb direction and a coil 19b for the -xb direction, and each of these coils, as shown in FIG. 5, includes a coil 18a, a coil 19a, a coil 18b,
The coils 19b are connected in series in this order, and according to these coils, the oscillators 14. ,．． 1
．． 4 is applied, and a displacement signal is output to the sensor circuit 15 from a series connection point between the coil 19a and the coil 18b.
さらに、上記変位センサ１６にあっては、図示しない＋
Ｙａ方向用コイル及び−Ｙａ方向用コイルを、−力変位
センサ１７にあっては、＋ｙｂ方向用コイル及び−ｙｂ
方向用コイルを備えており、これらの各コイルによれば
上記と同様に直列接続され、変位信号をセンサ回路へ出
力するように構成されている。Furthermore, in the displacement sensor 16, +
In the -force displacement sensor 17, the coil for the Ya direction and the coil for the -Ya direction are replaced by the coil for the +yb direction and the coil for the -yb direction.
A direction coil is provided, and each of these coils is connected in series in the same manner as described above, and is configured to output a displacement signal to the sensor circuit.
なお、上記センサ回路は第１の実施例と同様な構成のた
め、その詳細説明は省略する。Note that since the sensor circuit described above has the same configuration as the first embodiment, detailed explanation thereof will be omitted.
したがって、上記のような構成にあっても、第１の実施
例と同様に第４図に示す如く変位センサ１６．１７の変
位検出点が等価的に平面β上に存在することになり、−
刃型磁石３における力の作用点が平面β上に設定されて
いるので、その結果力の作用点ｆ、ｆと上記変位検出点
とが、同一平面β上に設定されるように構成されている
。Therefore, even with the above configuration, the displacement detection points of the displacement sensors 16 and 17 are equivalently located on the plane β, as shown in FIG. 4, as in the first embodiment, and -
Since the point of force application on the blade magnet 3 is set on the plane β, as a result, the force application points f, f and the displacement detection point are configured to be set on the same plane β. There is.
第６図に示すものは、磁気軸受装置の第３の実施例を示
すもので、この磁気軸受装置はロータ軸１外周に第８図
に示すものと同形状の変位センサ２０が配設されており
、その変位センサ２０の上下方向には、第９図に示すも
のと同形状のラジアル方向用電磁石２１．２２を備え、
これらの電磁石２１．２２によれば変位センサ２０にお
ける変位検出点を有する平面αに関し、互いに面対称と
なる平面ａおよび平面す上にそれぞれ配設するよう構成
されている。What is shown in FIG. 6 shows a third embodiment of the magnetic bearing device, in which a displacement sensor 20 having the same shape as that shown in FIG. 8 is arranged around the outer periphery of the rotor shaft 1. In the vertical direction of the displacement sensor 20, radial direction electromagnets 21 and 22 having the same shape as that shown in FIG. 9 are provided.
These electromagnets 21 and 22 are arranged on planes a and 2, respectively, which are plane symmetrical to each other with respect to the plane α having the displacement detection point of the displacement sensor 20.
すなわち、上記のような構成によれば、変位センサ２０
の変位検出点は平面α上に設定されており、一方各電磁
石２１．２２における力の作用点ｆ ｔ、ｆ １．
ｆ ２． ｆ ２は力の合成により、等価的に平
面α上に存在することになり、その結果力の作用点と変
位検出点が同一平面α上に設定されるように構成されて
いる。That is, according to the above configuration, the displacement sensor 20
The displacement detection points of are set on the plane α, while the points of force application f t, f 1 .
f2. Due to the combination of forces, f 2 will equivalently exist on the plane α, and as a result, the force application point and the displacement detection point are configured to be set on the same plane α.
したがって、上記のような各実施例にあっては、変位セ
ンサの変位検出点と電磁石における力の作用点とを等価
的に同一平面上にそれぞれ設定したため、曲げ振動にお
ける振動モードの節がロータ軸に生じた場合であっても
、変位センサの変位信号と電磁石へ出力される励磁電流
との位相が常時一定に保たれるので、ロータ軸を正常に
制御することができる。Therefore, in each of the above embodiments, the displacement detection point of the displacement sensor and the point of force application in the electromagnet are set equivalently on the same plane, so that the nodes of the vibration mode in bending vibration are aligned with the rotor axis. Even if this occurs, the phase of the displacement signal from the displacement sensor and the excitation current output to the electromagnet is always kept constant, so the rotor shaft can be controlled normally.
（発明の効果）
この発明に係る磁気軸受装置は、変位センサの変位検出
点と電磁石における力の作用点とを等価的に同一平面１
−にそれぞれ設定したため、曲げ振動における振動モー
ドの節がロータ軸に生じた場合であっても、変位センサ
の変位信号と電磁石へ出力される励磁電流との位相が常
時一定に保たれるので、ロータ軸は正常に制御され、磁
気軸受の発振を防止することができる。(Effects of the Invention) The magnetic bearing device according to the present invention allows the displacement detection point of the displacement sensor and the force application point of the electromagnet to be equivalently placed on the same plane.
-, even if a vibration mode node in bending vibration occurs on the rotor shaft, the phase between the displacement signal of the displacement sensor and the excitation current output to the electromagnet is always kept constant. The rotor shaft can be controlled normally and oscillation of the magnetic bearing can be prevented.
第１図はこの発明に係る磁気軸受装置の第１の実施例を
示す説明図、第２図（ａ）（ｂ）は変位センサの平面図
、第３図は変位センサの電気回路図、第４図は磁気軸受
装置の第２の実施例を示す説明図、第５図は変位センサ
の電気回路図、第６図は磁気軸受装置の第３の実施例を
示す説明図、第７図は従来の磁気軸受装置を示す説明図
、第８図は変位センサの平面図、第９図は電磁石の平面
図である。
１・・・ロータ軸
３、２］、、 ２２・・・電磁石
８、 ９． １６． １−７． ２０・・・変位センサ
α、β・・・平面
Ｊ−の発明り係る磁気軸受）た置の第１の実施例を示す
ぶ（明図第２
変位センサの平面図
（ｂ）
Ｙｂ
第３
図
変位センサの電気回路図
第５図
変位センサの電気回路図
第４
図
磁気軸受装置の第２の実″Ｉ５倭１を示す説明２第６
図
磁気軸受装置の第６の実施例を示す説８月図第７図
従来の磁気軸受装置を示す説明７
Ａ。
第８
図
変位センサの工面区
ゴＹFIG. 1 is an explanatory diagram showing a first embodiment of a magnetic bearing device according to the present invention, FIGS. 2(a) and 2(b) are plan views of a displacement sensor, and FIG. 3 is an electric circuit diagram of the displacement sensor. Fig. 4 is an explanatory diagram showing a second embodiment of the magnetic bearing device, Fig. 5 is an electric circuit diagram of a displacement sensor, Fig. 6 is an explanatory diagram showing a third embodiment of the magnetic bearing device, and Fig. 7 is an explanatory diagram showing a third embodiment of the magnetic bearing device. An explanatory diagram showing a conventional magnetic bearing device, FIG. 8 is a plan view of a displacement sensor, and FIG. 9 is a plan view of an electromagnet. 1... Rotor shaft 3, 2], 22... Electromagnet 8, 9. 16. 1-7. 20... Displacement sensor α, β... Showing the first embodiment of the magnetic bearing according to the invention on the plane J- (clear figure 2 Plan view of the displacement sensor (b) Yb 3 Electrical circuit diagram of the displacement sensor Figure 5 Electrical circuit diagram of the displacement sensor Figure 4 Explanation 2 showing the second embodiment of the magnetic bearing device Figure 7: Explanation 7 showing a conventional magnetic bearing device. Figure 8: Construction of displacement sensor.
Claims (1)
サと、この変位センサの変位信号に基づいて出力される
励磁電流で上記ロータ軸を所定の位置へ支持する電磁石
とを備える磁気軸受装置であって、 上記変位センサの変位検出点と上記電磁石における力の
作用点とを等価的に同一平面上にそれぞれ設定したこと
を特徴とする磁気軸受装置。[Claims] 1. A displacement sensor that detects the displacement of the rotor shaft as a displacement signal, and an electromagnet that supports the rotor shaft at a predetermined position using an excitation current output based on the displacement signal of the displacement sensor. What is claimed is: 1. A magnetic bearing device comprising: a displacement detection point of the displacement sensor and a point of force application in the electromagnet that are equivalently set on the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2219696A JPH04102716A (en) | 1990-08-21 | 1990-08-21 | Magnetic bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2219696A JPH04102716A (en) | 1990-08-21 | 1990-08-21 | Magnetic bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04102716A true JPH04102716A (en) | 1992-04-03 |
Family
ID=16739533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2219696A Pending JPH04102716A (en) | 1990-08-21 | 1990-08-21 | Magnetic bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04102716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU225202U1 (en) * | 2023-11-23 | 2024-04-15 | Публичное Акционерное Общество "Газпром Автоматизация" | Radial active magnetic bearing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS596261U (en) * | 1982-06-30 | 1984-01-14 | 富士通株式会社 | Laser beam scanning device |
-
1990
- 1990-08-21 JP JP2219696A patent/JPH04102716A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS596261U (en) * | 1982-06-30 | 1984-01-14 | 富士通株式会社 | Laser beam scanning device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU225202U1 (en) * | 2023-11-23 | 2024-04-15 | Публичное Акционерное Общество "Газпром Автоматизация" | Radial active magnetic bearing |
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