JP2000346703A - Vibration detector for electromagnetic actuator - Google Patents

Vibration detector for electromagnetic actuator

Info

Publication number
JP2000346703A
JP2000346703A JP11155981A JP15598199A JP2000346703A JP 2000346703 A JP2000346703 A JP 2000346703A JP 11155981 A JP11155981 A JP 11155981A JP 15598199 A JP15598199 A JP 15598199A JP 2000346703 A JP2000346703 A JP 2000346703A
Authority
JP
Japan
Prior art keywords
vibration
electromagnetic actuator
solenoid valve
linear solenoid
detected
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.)
Granted
Application number
JP11155981A
Other languages
Japanese (ja)
Other versions
JP3692833B2 (en
Inventor
Hiroyuki Nishizawa
博幸 西澤
Masataka Osawa
正敬 大澤
Masanobu Kimura
正信 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP15598199A priority Critical patent/JP3692833B2/en
Publication of JP2000346703A publication Critical patent/JP2000346703A/en
Application granted granted Critical
Publication of JP3692833B2 publication Critical patent/JP3692833B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To detect vibration of an electromagnetic actuator accurately without requiring any extra sensor. SOLUTION: A current flowing through an electromagnetic actuator, i.e., a linear solenoid valve 30, is detected by an ammeter 42 and passed through a band-pass filter 44 to take out only the frequency region based on the vibration of the linear solenoid valve 30. A differentiation unit 46 differentiates the signal thus taken out to determine the speed component of the displacement of the linear solenoid valve 30. Subsequently, a weighting unit 48 multiplies the speed component by a current detected through the ammeter 42. According to the arrangement, vibration of the linear solenoid valve 30 due to hydraulic vibration under open valve state can be detected accurately.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、電磁アクチュエー
タの振動検出装置に関する。
The present invention relates to a vibration detecting device for an electromagnetic actuator.

【0002】[0002]

【従来の技術】従来技術として、電磁アクチュエータの
変位を検出する装置に関する文献は種々知られている
(例えば、特開平7−288995号公報や特開平9−
42906号公報,特開平10−115205号公報な
ど)。特開平7−288995号公報に記載された装置
では、ソレノイド弁の駆動電流にキャリア信号を上重さ
せたときの電圧と電流の位相差からソレノイドのインダ
クタンスを計算してソレノイド弁の変位を推定してい
る。特開平9−42906号公報に記載された装置で
は、ソレノイド弁の変位に応じて変化する主磁束の変化
を検出してソレノイド弁の変位を検出している。また、
特開平10−115205号公報に記載された装置で
は、ソレノイド弁の開弁用の電磁コイルと閉弁用の電磁
コイルとを設け、開弁時には閉弁用の電磁コイルを過電
流式変位センサとして用いてソレノイド弁の変位を検出
し、逆に閉弁時には開弁用の電磁コイルにより同様にし
てソレノイド弁の変位を検出している。こうして検出し
たソレノイド弁の変位は、ソレノイド弁に作用する流体
の影響の判定に用いることができる。
2. Description of the Related Art As prior art, various documents relating to a device for detecting the displacement of an electromagnetic actuator are known (for example, Japanese Patent Application Laid-Open Nos. Hei 7-288895 and Hei 9-1989).
42906, JP-A-10-115205, etc.). In the device described in Japanese Patent Application Laid-Open No. 7-288995, the displacement of the solenoid valve is estimated by calculating the inductance of the solenoid from the phase difference between the voltage and the current when the carrier signal is added to the drive current of the solenoid valve. ing. In the device described in Japanese Patent Application Laid-Open No. 9-42906, the displacement of the solenoid valve is detected by detecting a change in the main magnetic flux that changes according to the displacement of the solenoid valve. Also,
In the device described in Japanese Patent Application Laid-Open No. H10-115205, an electromagnetic coil for opening a solenoid valve and an electromagnetic coil for closing a valve are provided, and when the valve is opened, the electromagnetic coil for closing the valve is used as an overcurrent displacement sensor. To detect the displacement of the solenoid valve, and conversely, when the valve is closed, the displacement of the solenoid valve is similarly detected by a valve opening electromagnetic coil. The displacement of the solenoid valve thus detected can be used for determining the influence of the fluid acting on the solenoid valve.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、特開平
7−288995号公報に記載された装置では、ソレノ
イドのインダクタンスと変位の関係が個体差により変化
するから、大量生産品で精度よく変位を検出するのは困
難になるという問題があった。また、特開平9−429
06号公報に記載された装置では、主磁束の変化を検出
するセンサが必要となるため、装置が複雑になるという
問題があった。さらに、特開平10−115205号公
報に記載された装置では、ソレノイド弁の開弁用と閉弁
用の二つの電磁コイルを備える必要があるという問題が
あった。したがって、これらの装置を用いてソレノイド
弁の振動を検出する装置を作成しても精度の面や構成の
複雑さ等の面で同様の問題を生じてしまう。
However, in the device described in Japanese Patent Application Laid-Open No. 7-288995, the relationship between the inductance and the displacement of the solenoid varies depending on the individual difference. There was a problem that would be difficult. Also, Japanese Patent Application Laid-Open No. 9-429
In the device described in Japanese Patent Application Laid-Open No. 06-2006, a sensor for detecting a change in the main magnetic flux is required, so that there is a problem that the device is complicated. Further, the device described in Japanese Patent Application Laid-Open No. H10-115205 has a problem that it is necessary to provide two electromagnetic coils for opening and closing the solenoid valve. Therefore, even if a device for detecting the vibration of the solenoid valve is created by using these devices, similar problems occur in terms of accuracy and complexity of the configuration.

【0004】また、リニアソレノイド弁に作用する流体
の影響はソレノイド弁の変位から判定しなくてもソレノ
イド弁の振動から判定することもできるから、ソレノイ
ド弁の振動を検出すればよい。
Further, the influence of the fluid acting on the linear solenoid valve can be determined not from the displacement of the solenoid valve but from the vibration of the solenoid valve. Therefore, the vibration of the solenoid valve may be detected.

【0005】本発明の電磁アクチュエータの振動検出装
置は、特別なセンサを付加することなく電磁アクチュエ
ータの振動を検出することを目的の一つとする。本発明
の電磁アクチュエータの振動検出装置は、電磁アクチュ
エータの振動を精度よく検出することを目的の一つとす
る。
An object of the present invention is to detect vibration of an electromagnetic actuator without adding a special sensor. An object of the vibration detection device for an electromagnetic actuator of the present invention is to accurately detect vibration of the electromagnetic actuator.

【0006】[0006]

【課題を解決するための手段およびその作用・効果】本
発明の電磁アクチュエータの振動検出装置は、上述の目
的の少なくとも一部を達成するために以下の手段を採っ
た。
Means for Solving the Problems and Functions and Effects The vibration detecting device for an electromagnetic actuator according to the present invention employs the following means in order to at least partially achieve the above object.

【0007】本発明の電磁アクチュエータの振動検出装
置は、電磁アクチュエータの振動を検出する振動検出装
置であって、前記電磁アクチュエータの駆動電流を検出
する駆動電流検出手段と、該検出された駆動電流から前
記電磁アクチュエータの振動周波数に関する周波数帯域
の信号を抽出し、該抽出信号に基づいて前記電磁アクチ
ュエータの振動を検出する振動検出手段とを備えること
を要旨とする。
A vibration detecting device for an electromagnetic actuator according to the present invention is a vibration detecting device for detecting vibration of an electromagnetic actuator, comprising: a driving current detecting means for detecting a driving current of the electromagnetic actuator; The gist of the invention is to include a vibration detection unit that extracts a signal in a frequency band related to a vibration frequency of the electromagnetic actuator and detects vibration of the electromagnetic actuator based on the extracted signal.

【0008】この本発明の電磁アクチュエータの振動検
出装置では、電磁アクチュエータの駆動電流に基づいて
その振動を検出することができる。この結果、駆動電流
を検出する駆動電流検出手段以外のセンサを必要としな
いから、構成をシンプルなものとすることができる。
In the vibration detecting device for an electromagnetic actuator according to the present invention, the vibration can be detected based on the driving current of the electromagnetic actuator. As a result, since no sensor other than the drive current detecting means for detecting the drive current is required, the configuration can be simplified.

【0009】こうした本発明の電磁アクチュエータの振
動検出装置において、前記振動検出手段は、前記駆動電
流検出手段により検出された駆動電流の所定範囲外の周
波数を除去する周波数除去手段と、該所定範囲外の周波
数が除去された駆動電流の微分値を演算する微分演算手
段と、該演算された微分値に基づいて前記電磁アクチュ
エータの振動を判定する振動判定手段とを備えるものと
することもできる。ここで、「所定範囲外の周波数」に
は、電磁アクチュエータの駆動に用いる電流の定常項と
しての周波数領域やノイズにより生じる高周波領域が含
まれ、「所定範囲の周波数」には、電磁アクチュエータ
の振動の周波数の領域が含まれることを意味する。こう
すれば、電磁アクチュエータの振動を精度よく検出する
ことができる。
In the vibration detecting device for an electromagnetic actuator according to the present invention, the vibration detecting means removes a frequency of the drive current detected by the drive current detecting means outside a predetermined range, and a frequency removing means for removing the frequency outside the predetermined range. And a vibration determining means for determining the vibration of the electromagnetic actuator based on the calculated differential value. Here, the “frequency outside the predetermined range” includes a frequency region as a stationary term of the current used for driving the electromagnetic actuator and a high frequency region caused by noise, and the “frequency within the predetermined range” includes the vibration of the electromagnetic actuator. Frequency region is included. This makes it possible to accurately detect the vibration of the electromagnetic actuator.

【0010】この態様の本発明の電磁アクチュエータの
振動検出装置において、前記振動判定手段は、前記微分
演算手段により演算された微分値に前記駆動電流検出手
段により検出された駆動電流を乗じた値に基づいて前記
電磁アクチュエータの振動を判定する手段であるものと
することもできる。ソレノイド弁は、通常リターンスプ
リングを備えており、開弁時にソレノイドに通電してソ
レノイド弁を駆動するから、駆動電流を乗じることはソ
レノイド弁の開弁時の駆動電流の小さなときの振動をマ
スクし開弁後の振動に重みを付けることになる。この結
果、開弁時の振動と開弁後の振動とを区別することがで
きると共に、開弁後の振動を精度よく検出することがで
きる。
In the vibration detecting device for an electromagnetic actuator according to the aspect of the present invention, the vibration determining means may multiply a differential value calculated by the differential calculating means by a driving current detected by the driving current detecting means. It may be a means for judging the vibration of the electromagnetic actuator based on this. Normally, a solenoid valve is provided with a return spring, and when the valve is opened, the solenoid is energized to drive the solenoid valve.Multiplying the drive current masks vibration when the drive current is small when the solenoid valve is opened. The weight after the valve is opened will be weighted. As a result, the vibration at the time of opening the valve and the vibration after the opening of the valve can be distinguished, and the vibration after the opening of the valve can be accurately detected.

【0011】本発明の異なる態様として、電磁アクチュ
エータの振動検出方法がある。この本発明の電磁アクチ
ュエータの振動検出方法は、電磁アクチュエータの振動
を検出する振動検出方法であって、(a)前記電磁アク
チュエータの駆動電流を検出し、(b)該検出した駆動
電流の所定範囲外の周波数を除去し、(c)該所定範囲
外の周波数が除去された駆動電流の微分値を演算し、
(d)該演算された微分値に基づいて前記電磁アクチュ
エータの振動を判定することを要旨とする。
Another aspect of the present invention is a method for detecting vibration of an electromagnetic actuator. The vibration detection method for an electromagnetic actuator according to the present invention is a vibration detection method for detecting vibration of an electromagnetic actuator, wherein (a) a drive current of the electromagnetic actuator is detected, and (b) a predetermined range of the detected drive current. (C) calculating a differential value of the drive current from which frequencies outside the predetermined range have been removed,
(D) determining the vibration of the electromagnetic actuator based on the calculated differential value.

【0012】この本発明の異なる態様としての電磁アク
チュエータの振動検出方法では、電磁アクチュエータの
駆動電流に基づいて電磁アクチュエータの振動を検出す
ることができる。この結果、電磁アクチュエータの駆動
電流を検出するセンサ以外のセンサを必要としない。こ
こで、「所定範囲外の周波数」には、電磁アクチュエー
タの駆動に用いる電流の定常項としての周波数領域やノ
イズにより生じる高周波領域が含まれ、「所定範囲の周
波数」には、電磁アクチュエータの振動の周波数の領域
が含まれることを意味するから、電磁アクチュエータの
振動を精度よく検出することができる。
In the vibration detecting method of the electromagnetic actuator according to another aspect of the present invention, the vibration of the electromagnetic actuator can be detected based on the driving current of the electromagnetic actuator. As a result, no sensor other than the sensor for detecting the drive current of the electromagnetic actuator is required. Here, the “frequency outside the predetermined range” includes a frequency region as a stationary term of the current used for driving the electromagnetic actuator and a high frequency region caused by noise, and the “frequency within the predetermined range” includes the vibration of the electromagnetic actuator. Therefore, the vibration of the electromagnetic actuator can be accurately detected.

【0013】こうした本発明の異なる態様としての電磁
アクチュエータの振動検出方法において、前記ステップ
(d)は、前記演算された微分値に前記検出された駆動
電流を乗じた値に基づいて前記電磁アクチュエータの振
動を判定するステップであるものとすることもできる。
こうすれば、電磁アクチュエータの開弁時の振動と開弁
後の振動とを区別することができると共に開弁後の振動
を精度よく検出することができる。なお、電磁アクチュ
エータが通常リターンスプリングを備えることは本発明
の電磁アクチュエータの振動検出装置で説明したのと同
様である。
In the vibration detecting method of the electromagnetic actuator according to another aspect of the present invention, the step (d) includes the step of calculating the differential value of the electromagnetic actuator based on a value obtained by multiplying the calculated differential value by the detected drive current. This may be a step of determining the vibration.
This makes it possible to distinguish between the vibration of the electromagnetic actuator when the valve is opened and the vibration after the valve is opened, and it is possible to accurately detect the vibration after the valve is opened. Incidentally, the fact that the electromagnetic actuator usually has a return spring is the same as described in the vibration detecting device for the electromagnetic actuator of the present invention.

【0014】[0014]

【発明の実施の形態】次に、本発明の実施の形態を実施
例を用いて説明する。図1は、本発明の一実施例である
電磁アクチュエータとしてのリニアソレノイド弁の振動
検出装置40をリニアソレノイド弁30の電気系統に取
り付けた際の構成の概略を示す構成図である。図示する
ように、実施例の振動検出装置40は、電源回路22か
らリニアソレノイド弁30に電力を供給する電源ライン
に設けられリニアソレノイド弁30に流れる電流iを検
出する電流計42と、電流計42により検出された電流
iの振動に基づく周波数領域だけを通過するバンドパス
フィルタ44と、バンドパスフィルタ44を通過した所
定周波数領域の信号の微分値を演算する微分演算器46
と、微分演算器46により演算された微分値に電流計4
2により検出された電流iを乗じて重みを付加する重み
付加器48とを備える。
Next, embodiments of the present invention will be described with reference to examples. FIG. 1 is a configuration diagram schematically showing a configuration when a vibration detection device 40 of a linear solenoid valve as an electromagnetic actuator according to an embodiment of the present invention is attached to an electric system of a linear solenoid valve 30. As shown in the figure, the vibration detection device 40 of the embodiment includes an ammeter 42 provided on a power supply line for supplying power from the power supply circuit 22 to the linear solenoid valve 30 and detecting a current i flowing through the linear solenoid valve 30; A band-pass filter 44 that passes only through a frequency region based on the vibration of the current i detected by the signal 42, and a differential calculator 46 that calculates a differential value of a signal in a predetermined frequency region that has passed through the band-pass filter 44
And the differential value calculated by the differential calculator 46 to the ammeter 4
And a weight adder 48 for multiplying the current i detected by the step 2 and adding a weight.

【0015】リニアソレノイド弁30は、油圧回路にお
ける油圧の制御に用いられる弁であり、図2に示すよう
に、ソレノイド31に電流を印加することによりプラン
ジャ32を軸方向(図中水平方向)にリターンスプリン
グ33に抗して動作させ、プランジャ32により軸方向
にスライドさせられるスプール34と固定されたスリー
ブ35との相対位置により定まる弁開度を調節すること
により、油圧を制御するものである。このリニアソレノ
イド弁30は、油圧回路における油圧が振動すると、ス
プール34が振動し、この振動がスプール34に当接し
ているプランジャ32に伝達する。プランジャ32の振
動は、ソレノイド31に起電力を生じさせるから、振動
はソレノイド31に印加されている電流iに現われる。
The linear solenoid valve 30 is a valve used for controlling the hydraulic pressure in the hydraulic circuit. As shown in FIG. 2, a current is applied to the solenoid 31 to move the plunger 32 in the axial direction (horizontal direction in the figure). The hydraulic pressure is controlled by operating against the return spring 33 and adjusting the valve opening determined by the relative position between the spool 34 slid in the axial direction by the plunger 32 and the fixed sleeve 35. When the hydraulic pressure in the hydraulic circuit vibrates, the spool 34 vibrates in the linear solenoid valve 30, and this vibration is transmitted to the plunger 32 in contact with the spool 34. Since the vibration of the plunger 32 generates an electromotive force in the solenoid 31, the vibration appears in the current i applied to the solenoid 31.

【0016】こうしたリニアソレノイド弁30の駆動電
圧Eと駆動電流iとの関係は、ブロック線図で表わせば
図3の様になり、式で表わせば次式(1)のように表わ
される。ここで、図3および式(1)中、「E」は駆動
電圧、「L」はソレノイド31のインダクタンス、
「R」はソレノイド31の直流抵抗、「i」は駆動電
流、「x」はリニアソレノイド弁30のスプール34の
変位、「dx/dt」は外乱をそれぞれ表わす。
The relationship between the drive voltage E and the drive current i of the linear solenoid valve 30 is represented by a block diagram as shown in FIG. 3, and represented by the following formula (1). Here, in FIG. 3 and equation (1), “E” is the drive voltage, “L” is the inductance of the solenoid 31,
"R" represents the DC resistance of the solenoid 31, "i" represents the drive current, "x" represents the displacement of the spool 34 of the linear solenoid valve 30, and "dx / dt" represents the disturbance.

【0017】[0017]

【数1】 (Equation 1)

【0018】リニアソレノイド弁30の駆動電圧指令の
周波数は、油圧振動の周波数に比して充分低いからハイ
パスフィルタを用いて電流iの定常項を取り除くと上述
の式(1)より次式(2)が得られる。
Since the frequency of the drive voltage command for the linear solenoid valve 30 is sufficiently lower than the frequency of the hydraulic vibration, if the stationary term of the current i is removed using a high-pass filter, the following equation (2) is obtained from the above equation (1). ) Is obtained.

【0019】[0019]

【数2】 (Equation 2)

【0020】また、電流iの高周波領域でのノイズを取
り除くためにローパスフィルタを用いれば、得られる信
号は、振動に基づく周波数を反映するものとなる。した
がって、振動検出装置40のバンドパスフィルタ44
を、リニアソレノイド弁30の駆動電圧指令の周波数を
取り除くハイパスフィルタと高周波領域でのノイズを取
り除くローパスフィルタとを組み合わせてなるバンドパ
スフィルタとすることにより、リニアソレノイド弁30
のスプール34の振動に基づく周波領域だけを含む信号
を得ることができる。
If a low-pass filter is used to remove the noise in the high frequency region of the current i, the obtained signal reflects the frequency based on the vibration. Therefore, the band-pass filter 44 of the vibration detecting device 40
Is a band-pass filter obtained by combining a high-pass filter that removes the frequency of the drive voltage command of the linear solenoid valve 30 and a low-pass filter that removes noise in a high-frequency region.
, A signal including only the frequency range based on the vibration of the spool 34 can be obtained.

【0021】こうしてバンドパスフィルタ44により得
られる信号から微分演算器46により微分値を求めれ
ば、この微分値はリニアソレノイド弁30のスプール3
4の変位速度を示すものとなり、油圧振動を示すものと
なる。
When the differential value is obtained by the differential calculator 46 from the signal obtained by the band-pass filter 44, the differential value is obtained by the spool 3 of the linear solenoid valve 30.
4 shows the displacement speed, and shows the hydraulic vibration.

【0022】油圧振動が問題となるのは、リニアソレノ
イド弁30が開弁状態にあるときであり、ソレノイド3
1に流れる電流iが小さくまだ開弁していない状態のと
きは問題にならないから、ソレノイド31に流れる電流
iを微分演算器46により得られる微分値に乗じれば問
題となる油圧振動の領域をクローズアップすることがで
きる。振動検出装置40の重み付加器48は、この目的
のために微分演算器46により得られた微分値に電流i
を乗じるのである。
Hydraulic vibration is a problem when the linear solenoid valve 30 is open.
When the current i flowing through the solenoid 1 is small and the valve is not yet opened, no problem occurs. Therefore, if the current i flowing through the solenoid 31 is multiplied by the differential value obtained by the differential calculator 46, the region of the hydraulic vibration that causes the problem will be reduced. Can be close-up. The weighting unit 48 of the vibration detecting device 40 outputs the current i to the differential value obtained by the differential computing unit 46 for this purpose.
Is multiplied by

【0023】微分演算器46による微分を次式(3)の
不完全微分とし、バンドパスフィルタ44を式(4)の
ローパスフィルタと式(5)のハイパスフィルタにより
構成したときのリニアソレノイド弁30の作動による油
圧の変化とスプール34の変位,スプール34の変位の
速度,振動検出装置40からの出力(検出電位)の一例
を図4に示す。
The linear solenoid valve 30 when the differential by the differential calculator 46 is an incomplete derivative of the following equation (3) and the band-pass filter 44 is composed of the low-pass filter of the equation (4) and the high-pass filter of the equation (5) FIG. 4 shows an example of a change in the hydraulic pressure, the displacement of the spool 34, the speed of the displacement of the spool 34, and the output (detection potential) from the vibration detection device 40 due to the operation of.

【0024】[0024]

【数3】 (Equation 3)

【0025】図示するように、スプール34が十分に変
位してリニアソレノイド弁30が開弁状態となる時間
0.3秒までは、ソレノイド31に流れる電流iが小さ
いから、重み付加器48によりスプール34の振動とし
て出力される検出電位は小さく抑えられる。一方、時間
0.3秒以降ではソレノイド31に流れる電流iは大き
くなり、重み付加器48によってスプール34の振動は
クローズアップされて検出電位は大きくなる。
As shown in the drawing, the current i flowing through the solenoid 31 is small until the time when the spool 34 is sufficiently displaced and the linear solenoid valve 30 is opened is 0.3 seconds. The detection potential output as the vibration of 34 is kept small. On the other hand, after the time of 0.3 seconds, the current i flowing through the solenoid 31 increases, the vibration of the spool 34 is closed up by the weighting device 48, and the detection potential increases.

【0026】以上説明した実施例のリニアソレノイド弁
の振動検出装置40によれば、電流計42以外の特別な
センサを付加することなく、リニアソレノイド弁の振動
を精度よく検出することができる。しかもバンドパスフ
ィルタ44を用いてスプール34の振動に基づく周波数
領域だけを取り出したから、高い精度で振動を検出する
ことができる。また、重み付加器48により重みを付け
たから、問題となるリニアソレノイド弁30の状態にお
ける振動をクローズアップさせることができる。
According to the linear solenoid valve vibration detecting apparatus 40 of the embodiment described above, the vibration of the linear solenoid valve can be detected accurately without adding a special sensor other than the ammeter 42. Moreover, since only the frequency region based on the vibration of the spool 34 is extracted using the band-pass filter 44, the vibration can be detected with high accuracy. In addition, since the weighting is performed by the weighting unit 48, the vibration in the state of the linear solenoid valve 30, which is a problem, can be brought up.

【0027】実施例の振動検出装置40では、バンドパ
スフィルタ44を備えるものとしたが、バンドパスフィ
ルタ44を備えないものとして構成してもかまわない。
また、実施例の振動検出装置40では、重み付加器48
により重みを付加するものとしたが、常時開弁状態であ
りその開度を調節するタイプのソレノイド弁などに適用
する場合などでは重みを付加しないものとするのも好適
である。
Although the vibration detecting device 40 of the embodiment has the band pass filter 44, the vibration detecting device 40 may have no band pass filter 44.
In addition, in the vibration detection device 40 of the embodiment, the weight
However, it is also preferable that no weight is added in the case where the present invention is applied to a solenoid valve which is in a normally open state and its opening is adjusted, for example.

【0028】実施例の振動検出装置40では、油圧制御
に用いるリニアソレノイド弁30に適用したが、ソレノ
イドを用いて弁開度を調節するものであれば如何なるタ
イプの弁、例えば湯と水とを混合する湯水混合弁などに
も適用することができる。
In the vibration detecting device 40 of the embodiment, the present invention is applied to the linear solenoid valve 30 used for hydraulic control, but any type of valve, such as hot water and cold water, can be used as long as the valve opening is adjusted using a solenoid. The present invention can also be applied to a mixing valve for mixing hot and cold water.

【0029】以上、本発明の実施の形態について実施例
を用いて説明したが、本発明はこうした実施例に何等限
定されるものではなく、本発明の要旨を逸脱しない範囲
内において、種々なる形態で実施し得ることは勿論であ
る。
The embodiments of the present invention have been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various embodiments may be made without departing from the scope of the present invention. Of course, it can be carried out.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の一実施例である電磁アクチュエータ
としてのリニアソレノイド弁の振動検出装置40をリニ
アソレノイド弁30の電気系統に取り付けた際の構成の
概略を示す構成図である。
FIG. 1 is a configuration diagram showing an outline of a configuration when a vibration detection device 40 of a linear solenoid valve as an electromagnetic actuator according to an embodiment of the present invention is attached to an electric system of a linear solenoid valve 30.

【図2】 リニアソレノイド弁30の構成の概略を示す
断面図である。
FIG. 2 is a cross-sectional view schematically showing a configuration of a linear solenoid valve 30.

【図3】 リニアソレノイド弁30の駆動電圧Eと駆動
電流iとの関係を示すブロック線図である。
FIG. 3 is a block diagram showing a relationship between a drive voltage E and a drive current i of the linear solenoid valve 30.

【図4】 リニアソレノイド弁30の作動による油圧の
変化とスプール34の変位,スプール34の変位の速
度,振動検出装置40からの出力(検出電位)の一例を
示すグラフである。
4 is a graph showing an example of a change in hydraulic pressure due to the operation of a linear solenoid valve 30, displacement of a spool 34, a speed of displacement of a spool 34, and an output (detection potential) from a vibration detection device 40. FIG.

【符号の説明】[Explanation of symbols]

22 電源回路、30 リニアソレノイド弁、31 ソ
レノイド、32 プランジャ、33 リターンスプリン
グ、34 スプール、35 スリーブ、40振動検出装
置、42 電流計、44 バンドパスフィルタ、46
微分演算器、48 重み付加器。
22 power supply circuit, 30 linear solenoid valve, 31 solenoid, 32 plunger, 33 return spring, 34 spool, 35 sleeve, 40 vibration detection device, 42 ammeter, 44 bandpass filter, 46
Differentiator, 48 weight adder.

フロントページの続き (72)発明者 木村 正信 愛知県愛知郡長久手町大字長湫字横道41番 地の1 株式会社豊田中央研究所内 Fターム(参考) 2G024 AA15 BA11 CA13 CA18 DA21 FA04 2G064 AA11 BD17 CC41 Continuing from the front page (72) Inventor Masanobu Kimura 41-cho, Yojimichi, Nagakute-cho, Aichi-gun, Aichi F-1 term at Toyota Central R & D Laboratories, Inc. (reference) 2G024 AA15 BA11 CA13 CA18 DA21 FA04 2G064 AA11 BD17 CC41

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 電磁アクチュエータの振動を検出する振
動検出装置であって、 前記電磁アクチュエータの駆動電流を検出する駆動電流
検出手段と、 該検出された駆動電流から前記電磁アクチュエータの振
動周波数に関する周波数帯域の信号を抽出し、該抽出信
号に基づいて前記電磁アクチュエータの振動を検出する
振動検出手段とを備える振動検出装置。
1. A vibration detecting device for detecting vibration of an electromagnetic actuator, comprising: a driving current detecting means for detecting a driving current of the electromagnetic actuator; and a frequency band relating to a vibration frequency of the electromagnetic actuator from the detected driving current. And a vibration detecting means for detecting the vibration of the electromagnetic actuator based on the extracted signal.
JP15598199A 1999-06-03 1999-06-03 Vibration detection device for electromagnetic actuator and method using the same Expired - Fee Related JP3692833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15598199A JP3692833B2 (en) 1999-06-03 1999-06-03 Vibration detection device for electromagnetic actuator and method using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15598199A JP3692833B2 (en) 1999-06-03 1999-06-03 Vibration detection device for electromagnetic actuator and method using the same

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JP2000346703A true JP2000346703A (en) 2000-12-15
JP3692833B2 JP3692833B2 (en) 2005-09-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7159506B2 (en) 2003-06-30 2007-01-09 Toyota Jidosha Kabushiki Kaisha State detecting device for load element receiving load of working fluid and state detecting device for fluid pressure control circuit
JP2009047199A (en) * 2007-08-15 2009-03-05 Honda Motor Co Ltd Active vibration isolation support device and vibration frequency detection method for vibrating body
US8444124B2 (en) 2007-08-15 2013-05-21 Honda Motor Co., Ltd. Engine natural vibration frequency detection method, active vibration isolation support device control method, engine natural vibration frequency detection apparatus, active vibration isolation support device control apparatus, active vibration isolation support device, and vibration frequency detection apparatus for vibrating body
JP2014204622A (en) * 2013-04-09 2014-10-27 パナソニック株式会社 Motor driving device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7159506B2 (en) 2003-06-30 2007-01-09 Toyota Jidosha Kabushiki Kaisha State detecting device for load element receiving load of working fluid and state detecting device for fluid pressure control circuit
DE102004031155B4 (en) * 2003-06-30 2011-05-05 Toyota Jidosha Kabushiki Kaisha, Toyota-shi A working fluid loading condition detecting apparatus and a fluid pressure control circuit status detecting apparatus
JP2009047199A (en) * 2007-08-15 2009-03-05 Honda Motor Co Ltd Active vibration isolation support device and vibration frequency detection method for vibrating body
US8444124B2 (en) 2007-08-15 2013-05-21 Honda Motor Co., Ltd. Engine natural vibration frequency detection method, active vibration isolation support device control method, engine natural vibration frequency detection apparatus, active vibration isolation support device control apparatus, active vibration isolation support device, and vibration frequency detection apparatus for vibrating body
JP2014204622A (en) * 2013-04-09 2014-10-27 パナソニック株式会社 Motor driving device

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