JPH037802B2 - - Google Patents
Info
- Publication number
- JPH037802B2 JPH037802B2 JP55060212A JP6021280A JPH037802B2 JP H037802 B2 JPH037802 B2 JP H037802B2 JP 55060212 A JP55060212 A JP 55060212A JP 6021280 A JP6021280 A JP 6021280A JP H037802 B2 JPH037802 B2 JP H037802B2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- electromagnetic proportional
- flow control
- control
- flow
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
【発明の詳細な説明】
本発明は油圧回路における流量制御に係り、特
に電磁比例流量制御弁により流量を多段に変化さ
せる制御を速い応答により制御出来る流量制御方
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to flow control in a hydraulic circuit, and more particularly to a flow control method capable of controlling a flow rate to be varied in multiple stages using an electromagnetic proportional flow control valve with a quick response.
従来、電磁比例流量制御弁を用いて流量を多段
に変化させる制御は流量変化の切換信号により、
電磁比例流量制御弁への入力電気量（電流値）を
変化させ、これにより流量制御弁内部でスプール
を所定の流量制御に必要な位置まで移動させてい
る。 Conventionally, control to change the flow rate in multiple stages using an electromagnetic proportional flow control valve is based on a switching signal for changing the flow rate.
The amount of electricity (current value) input to the electromagnetic proportional flow control valve is changed, thereby moving the spool inside the flow control valve to the position required for predetermined flow control.
従つて、流量変更の制御信号が発せられてから
流量変更が完了するまでに時間が掛り０から
MAXまでの圧力変更の場合、流量制御弁のサイ
ズにもよるが70〜300secの時間が必要であつた。
従つて、圧力を多段に変化させる制御で応答速度
を速くする必要のある場合は電磁比例流量制御弁
を使用せずサーボ弁を用いていた。しかしながら
サーボ弁はコスト高となる欠点があつた。 Therefore, it takes time from when the flow rate change control signal is issued until the flow rate change is completed.
When changing the pressure up to MAX, it took 70 to 300 seconds, depending on the size of the flow control valve.
Therefore, when it is necessary to increase the response speed in control that changes pressure in multiple stages, a servo valve is used instead of an electromagnetic proportional flow control valve. However, servo valves have the disadvantage of high cost.
本発明はかゝる欠点を除去したものでその目的
はコストの低い、そして応答速度の早い油圧回路
の多段流量制御方法を提供することにあり、更に
詳細に説明すれば、Ａ、Ｂ一対の電磁比例流量制
御弁を用いて、一方の制御弁Ａでの流量制御中に
他方の制御弁Ｂの入力電気量を次段の流量制御に
必要な電気量に変更しておき、制御弁Ｂ内部のス
プール移動が完了する時間を経てから電磁方向切
換弁により流量制御回路を制御弁Ａの回路から制
御弁Ｂの回路へ切換え、応答の遅い欠点を取除
く、圧力制御方法を提供することである。 The present invention eliminates such drawbacks, and its purpose is to provide a multi-stage flow rate control method for a hydraulic circuit that is low in cost and has a high response speed. Using an electromagnetic proportional flow control valve, while one control valve A is controlling the flow rate, the amount of electricity input to the other control valve B is changed to the amount of electricity required for the next flow rate control, and the inside of control valve B is changed. To provide a pressure control method in which a flow control circuit is switched from a control valve A circuit to a control valve B circuit using an electromagnetic directional control valve after a time period has elapsed when spool movement is completed, thereby eliminating the drawback of slow response. .
次に第１図および第２図により本発明の１実施
例を第２図１に示す、V111、V221、V112、V222…
…V11n、V22oの８段階に多段流量制御する油圧
制御回路に例を採り説明する。 Next, referring to FIGS. 1 and 2, one embodiment of the present invention is shown in FIG. 2, V 111 , V 221 , V 112 , V 222 .
...An example of a hydraulic control circuit that controls the flow rate in eight stages of V 11n and V 22o will be explained.
ポンプ１０１はタンク１０２内の油を加圧し、
この油は電磁方向切換弁１０３を通過した後、一
対の電磁比例流量制御弁１０４あるいは１０５の
何れかを介してアクチユエータ１０６に流入され
る。電磁比例流量制御弁１０４および１０５は
夫々流量設定器１１４および１１５に設定された
第２図２に示すようなV111V112、V113、V11nおよ
び第２図３に示すようなV221、V222、V223、V22o
で制御され、電磁方向切換弁１０３の切換によ
り、前記電磁比例流量制御弁１０４および１０５
を交互に切換え、アクチユエータ１０６を第２図
１に示すような流量V111、V221、V112、V222……
V11n、V22oの８段階の流量制御を行うようにな
つており、第２図２に示すように電磁比例流量制
御弁１０４がアクチユエータ１０６の動作開始時
より設定時間△t101だけ早く、作動開始するよう
になつている。 The pump 101 pressurizes the oil in the tank 102,
After passing through the electromagnetic directional control valve 103, this oil flows into the actuator 106 via either a pair of electromagnetic proportional flow control valves 104 or 105. The electromagnetic proportional flow control valves 104 and 105 have V 111 V 112 , V 113 , V 11n as shown in FIG. 2 and V 221 as shown in FIG. V222 , V223 , V22o
By switching the electromagnetic directional control valve 103, the electromagnetic proportional flow control valves 104 and 105
The actuator 106 is controlled to control the flow rates V 111 , V 221 , V 112 , V 222 . . . as shown in FIG.
Flow rate control is performed in 8 stages of V 11n and V 22o , and as shown in FIG. It's about to start.
前記時間△t101は電磁比例流量制御弁１０４の
スプ一ルの移動時間を考慮した時間となつてお
り、そのタイムアウト信号と同時に電磁方向切換
弁１０３の切換、即ち、第２図１に示した流量プ
ログラムの開始と同時にプログラムに設定された
第１の設定流量V111となるようにするとともに、
第２図３に示すように、電磁比例流量制御弁１０
５も次の切換に際して、予め作動させておき、電
磁方向切換弁１０３の切換と同時に第２図１に示
す流量プログラムの第２の設定流量V221となるよ
うにしている。同様に第３の設定流量V112以後も
行われ、電磁方向切換弁１０３の切換の度に、一
対の電磁比例流量制御弁１０４，１０５の内の−
側が選択されると、同時に他側も予め次の切換に
際して所定流量で作動させておくようにし、電磁
比例流量制御弁の応答遅れがないようにしてい
る。 The time Δt 101 is a time that takes into consideration the moving time of the sprue of the electromagnetic proportional flow control valve 104, and the electromagnetic directional control valve 103 is switched simultaneously with the timeout signal, that is, as shown in FIG. The first set flow rate V 111 set in the program is set at the same time as the start of the flow rate program, and
As shown in FIG. 2, the electromagnetic proportional flow control valve 10
5 is also activated in advance at the time of the next switching, so that the second set flow rate V 221 of the flow rate program shown in FIG. This is similarly performed after the third set flow rate V 112 , and each time the electromagnetic directional switching valve 103 is switched, -
When one side is selected, the other side is also operated at a predetermined flow rate in advance for the next switching, so that there is no response delay of the electromagnetic proportional flow control valve.
本発明における多段流量制御方法は上述したよ
うに構成したので、電磁方向切換弁１０３が切換
えられて、何れかの電磁比例流量制御弁を選択す
る時には同弁はすでに指定の圧力に変更されてい
る。電磁方向切換弁１０３の切換時間は通常約20
ｍsecであるから、従来の電磁比例流量制御弁の
電気量を調整する方式に比較すると格段に早い応
答速度が得られるものである。 Since the multistage flow control method of the present invention is configured as described above, when the electromagnetic directional control valve 103 is switched and any electromagnetic proportional flow control valve is selected, the pressure of the valve has already been changed to the specified pressure. . The switching time of the electromagnetic directional control valve 103 is usually about 20
msec, it is possible to obtain a much faster response speed than the conventional electromagnetic proportional flow control valve that adjusts the amount of electricity.
なお、前記実施例では各電磁比例流量制御弁の
設定流量を４段階づつ、８段階の流量プログラム
としたが勿論、これに限らず任意の数の多段流量
制御が可能である。 In the above-mentioned embodiment, the set flow rate of each electromagnetic proportional flow control valve is set to 4 stages, resulting in an 8-stage flow rate program, but of course, the present invention is not limited to this, and any number of multi-stage flow control is possible.
第１図は本発明の一実施例を示す図。第２図は
第１図で示す実施例における流量制御状況を示す
説明図。
１０３……電磁方向切換弁、１０４，１０５…
…電磁比例流量制御弁、１１０……信号切換器
Ｂ、１１１……信号切換器Ｃ、１１２……信号切
換器Ｄ、１１４，１１５……圧力設定器。
FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is an explanatory diagram showing the flow rate control situation in the embodiment shown in FIG. 103...Electromagnetic directional valve, 104, 105...
...Electromagnetic proportional flow control valve, 110...Signal switch B, 111...Signal switch C, 112...Signal switch D, 114, 115...Pressure setting device.
Claims (1)
を制御するために、アクチユエータの作動側油室
へ流入回路中に並列に配列された一対の電磁比例
流量制御弁と、同一対の電磁比例流量制御弁のう
ちの何れかを使用するために同流量制御弁の何れ
かに切換を行う電磁方向切換弁と、前記一対の電
磁比例流量制御弁を各々多段にプログラム制御す
るための多数の流量値を設定しておく流量設定器
と、前記流量設定器に設定された多数の流量値か
ら一つを選択するとともに、前記一対の電磁比例
流量制御弁の夫々のソレノイドに接続された信号
切換器ＣおよびＤと、所望の流量プログラム制御
を行うための設定値切換信号を受けて前記切換信
号器ＣおよびＤを交互に切換える信号切換器Ｂと
から成る油圧回路の流量制御装置により、前記所
望の流量プログラム制御開始前の所定時間に前記
一対の電磁比例流量制御弁のうちの−側を所定流
量で作動させるとともに、前記所定時間の経過後
は、前記プログラム制御を前記−側の電磁比例流
量制御弁の前記所定量で開始し、流量プログラム
制御開始後の設定流量切換に際しては−側の電磁
比例流量制御弁が選択されると、同時に他側の電
磁比例流量制御弁を予め次の設定流量値で作動さ
せておくことを特徴とする多段流量制御方法。1. In order to control the flow rate of hydraulic oil supplied to a given actuator, a pair of electromagnetic proportional flow control valves arranged in parallel in the inflow circuit to the operating side oil chamber of the actuator, and an identical pair of electromagnetic proportional flow control valves. In order to use either of them, an electromagnetic directional switching valve that switches to one of the same flow rate control valves, and a large number of flow values for controlling each of the pair of electromagnetic proportional flow control valves in a multistage program are set. a flow rate setting device, and signal switching devices C and D connected to respective solenoids of the pair of electromagnetic proportional flow control valves, which select one from a large number of flow rate values set in the flow rate setting device; , and a signal switch B that alternately switches the switching signals C and D in response to a set value switching signal for performing the desired flow rate program control, starts the desired flow rate program control. At the previous predetermined time, the - side of the pair of electromagnetic proportional flow control valves is operated at a predetermined flow rate, and after the elapse of the predetermined time, the program control is operated at the - side electromagnetic proportional flow control valve at the predetermined flow rate. When switching the set flow rate after starting with fixed amount and starting flow rate program control, if the - side electromagnetic proportional flow control valve is selected, the other side electromagnetic proportional flow control valve is operated at the next set flow rate value in advance at the same time. A multistage flow rate control method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6021280A JPS56156504A (en) | 1980-05-07 | 1980-05-07 | Multistage flow rate controller of hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6021280A JPS56156504A (en) | 1980-05-07 | 1980-05-07 | Multistage flow rate controller of hydraulic circuit |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26860690A Division JPH03144102A (en) | 1990-10-05 | 1990-10-05 | Multistage flow rate controlling method of hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56156504A JPS56156504A (en) | 1981-12-03 |
| JPH037802B2 true JPH037802B2 (en) | 1991-02-04 |
Family
ID=13135612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6021280A Granted JPS56156504A (en) | 1980-05-07 | 1980-05-07 | Multistage flow rate controller of hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56156504A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60232921A (en) * | 1984-05-04 | 1985-11-19 | Toshiba Mach Co Ltd | Screw speed/torque setting device for injection molder |
-
1980
- 1980-05-07 JP JP6021280A patent/JPS56156504A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56156504A (en) | 1981-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3874407A (en) | Pulse width modulation control for valves | |
| KR840001723A (en) | Hydraulic Circuit Control System | |
| ES463759A1 (en) | Solenoid valve current-programme control device | |
| JP2844476B2 (en) | Control method of hydraulic actuator | |
| JPH037802B2 (en) | ||
| US2966890A (en) | Automatic tracking | |
| JPH0357323B2 (en) | ||
| JPH0357322B2 (en) | ||
| JPH037801B2 (en) | ||
| JPS55103102A (en) | Controller for electro-hydraulic servo system | |
| JPS56143802A (en) | Electric-oil pressure servo controller | |
| JPS5981711A (en) | Electric-hydraulic servo device | |
| JP2946101B2 (en) | Operating device for fluid actuator | |
| JPS61206802A (en) | Fluid control device actuated through control of electric motor | |
| JPS57127177A (en) | Flow controlling device | |
| JPH0777747B2 (en) | Control method of injection molding machine | |
| JPH0336775Y2 (en) | ||
| JPS581310B2 (en) | Seisui Atsushiki Dendo Souchi | |
| JPS5578307A (en) | Simultaneous uniaxial positioning control unit | |
| JPS6448101A (en) | Control method for follow-up control system | |
| JPH0623563B2 (en) | Electric proportional control valve controller | |
| JPS6347577A (en) | Valve controller resting on joy stick operating input | |
| JP2668753B2 (en) | Industrial vehicle cargo handling control method | |
| JPS57173657A (en) | Inertial mass driving oil pressure closed circuit | |
| JPS5829283Y2 (en) | Hydraulic actuator control device |