JPH0220141U - - Google Patents
Info
- Publication number
- JPH0220141U JPH0220141U JP9748588U JP9748588U JPH0220141U JP H0220141 U JPH0220141 U JP H0220141U JP 9748588 U JP9748588 U JP 9748588U JP 9748588 U JP9748588 U JP 9748588U JP H0220141 U JPH0220141 U JP H0220141U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- rod
- comparator
- tank
- inputs
- 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
Links
- 230000005284 excitation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図及び第２図は本考案のそれぞれ異なる第
１及び第２実施例加振装置の電気回路及び油圧回
路を示す概略ブロツク図である。
１……被加振部、２……両ロツドピストン（ロ
ツドを有するピストン）、３，４……圧力室、５
，６，７，８……高速切換電磁弁、５′，６′，
７′，８′……コイル、９……油圧源、１０……
タンク、１１……位置センサー、１２……関数発
生器、１３……第１の指令信号、１４……ジヨイ
ステイツク装置、１５……可変抵抗器、１６……
第２の指令信号、１７……フイードバツク信号、
１８……加算器、１９……第１のコンパレータ、
２０……第２のコンパレータ、３０……可変電圧
制御装置。
1 and 2 are schematic block diagrams showing electric circuits and hydraulic circuits of different first and second embodiment vibration excitation devices of the present invention, respectively. 1... Excited part, 2... Double rod piston (piston with rods), 3, 4... Pressure chamber, 5
, 6, 7, 8...high-speed switching solenoid valve, 5', 6',
7', 8'...Coil, 9...Hydraulic power source, 10...
tank, 11... position sensor, 12... function generator, 13... first command signal, 14... joystick device, 15... variable resistor, 16...
second command signal, 17...feedback signal,
18... Adder, 19... First comparator,
20...Second comparator, 30...Variable voltage control device.
Claims (1)
トンの両側の２個の圧力室にそれぞれ圧油源及び
タンクと選択的に連通させる４個の高速切換電磁
弁であつて一方の圧力室が圧油源に連通されると
きは他方の圧力室はタンクと連通されるようにほ
ぼ同時に作動されるようにされた４個の高速切換
電磁弁と、前記ロツドを有するピストンの位置を
検出する位置センサーと、関数発生器からの任意
の周波数の第１の指令信号又は高低圧電源と可変
抵抗器を介して接続させるジヨイステイツク装置
が発生させる第２の指令信号の何れかを入力可能
にされかつ前記位置センサーからのフイードバツ
ク信号を入力する加算器と、加算器の出力を入力
し第１の不感帯幅を設定する第１のコンパレータ
及び前記加算器の出力を分岐しかつ逆相にして入
力し第２の不感帯幅を設定する第２のコンパレー
タと、各コンパレータの出力と前記ほぼ同時に作
動する２対の前記電磁弁との間に介されるトラン
ジスタースイツチ装置と、を含むことを特徴とす
る加振装置。 (2) 前記ロツドを有するピストンは両ロツドピ
ストンであり、前記両ロツドピストンに連結され
た被加振部は自動車等の共振固有振動周波数及び
／又は振幅試験装置である請求項第１項記載の加
振装置。 (3) 各前記電磁弁はそのコイルへの印加電圧を
可変に制御する可変電圧制御装置によつて印加電
圧を可変にそして前記電磁弁の弁開閉力を可変に
制御された請求項第１項又は第２項に記載の加振
装置。[Claims for Utility Model Registration] (1) Four high-speed switching electromagnetic devices that selectively connect the two pressure chambers on both sides of the piston, which has a rod connected to the vibrated part, with a pressure oil source and a tank, respectively. The valve includes four fast switching solenoid valves which are operated almost simultaneously so that when one pressure chamber is communicated with a pressure oil source, the other pressure chamber is communicated with a tank; a position sensor that detects the position of the piston having a first comparator which inputs the output of the adder and sets a first dead band width; and a second comparator that inputs the input in reverse phase to set a second dead band width, and a transistor switch device interposed between the output of each comparator and the two pairs of electromagnetic valves that operate almost simultaneously. A vibration excitation device characterized by: (2) The excitation according to claim 1, wherein the piston having the rod is a double-rod piston, and the vibrated part connected to the double-rod piston is a resonant natural vibration frequency and/or amplitude testing device of an automobile or the like. Device. (3) Claim 1, wherein each of the solenoid valves is variably controlled by a variable voltage control device that variably controls the voltage applied to its coil and the valve opening/closing force of the solenoid valve. Or the vibration device according to item 2.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988097485U JPH064315Y2 (en) | 1988-07-23 | 1988-07-23 | Excitation device |
| US07/381,284 US4989455A (en) | 1988-05-24 | 1989-07-18 | Vibrator |
| GB8916564A GB2222862B (en) | 1988-07-23 | 1989-07-20 | A vibrator |
| DE3924462A DE3924462C2 (en) | 1988-07-23 | 1989-07-24 | Vibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988097485U JPH064315Y2 (en) | 1988-07-23 | 1988-07-23 | Excitation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0220141U true JPH0220141U (en) | 1990-02-09 |
| JPH064315Y2 JPH064315Y2 (en) | 1994-02-02 |
Family
ID=31322991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988097485U Expired - Lifetime JPH064315Y2 (en) | 1988-05-24 | 1988-07-23 | Excitation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064315Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826743U (en) * | 1971-07-31 | 1973-03-31 | ||
| JPS543701A (en) * | 1977-06-10 | 1979-01-12 | Saburou Nagai | Vibration testing machine for motor car |
| JPS6022640A (en) * | 1983-07-19 | 1985-02-05 | Akashi Seisakusho Co Ltd | Vibration testing machine |
-
1988
- 1988-07-23 JP JP1988097485U patent/JPH064315Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826743U (en) * | 1971-07-31 | 1973-03-31 | ||
| JPS543701A (en) * | 1977-06-10 | 1979-01-12 | Saburou Nagai | Vibration testing machine for motor car |
| JPS6022640A (en) * | 1983-07-19 | 1985-02-05 | Akashi Seisakusho Co Ltd | Vibration testing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH064315Y2 (en) | 1994-02-02 |
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