JPS63187701U - - Google Patents
Info
- Publication number
- JPS63187701U JPS63187701U JP8012187U JP8012187U JPS63187701U JP S63187701 U JPS63187701 U JP S63187701U JP 8012187 U JP8012187 U JP 8012187U JP 8012187 U JP8012187 U JP 8012187U JP S63187701 U JPS63187701 U JP S63187701U
- Authority
- JP
- Japan
- Prior art keywords
- flapper
- pressure
- nozzle
- conversion mechanism
- air pressure
- 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
- 238000006243 chemical reaction Methods 0.000 claims 3
- 230000003321 amplification Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Servomotors (AREA)
Description
第１図は本考案を電空ポジシヨナに適用した場
合の１実施例を示すブロツク図、第２図は第１図
における圧電アクチユエータの動作点の説明をす
る特性図、第３図は本考案を用いた圧力―電気信
号変換器の構成を示す構成図、第４図はデジタル
信号で平衡する系の実施例を示すブロツク図、第
５図は周波数信号の位相比較によつて系の平衡が
実現される実施例を示すブロツク図である。
１，１′……入力端子、３……フラツパ、４…
…定電圧回路、５……切替スイツチ、６……ノズ
ル、７……駆動回路、８……パイロツトリレー、
１６……入力処理手段、１７……差動増幅器、１
８ａ，１８ｂ……圧電アクチユエータ、１９……
変位―電気信号変換器、２１……変位―電気信号
変換器、２２……圧力―電気信号変換器、３０…
…マクイクロコンピユータ。
Fig. 1 is a block diagram showing one embodiment of the present invention applied to an electropneumatic positioner, Fig. 2 is a characteristic diagram explaining the operating point of the piezoelectric actuator in Fig. 1, and Fig. 3 is a block diagram showing an embodiment of the present invention applied to an electropneumatic positioner. A block diagram showing the configuration of the pressure-electrical signal converter used, Figure 4 is a block diagram showing an example of a system balanced by digital signals, and Figure 5 shows system balance achieved by phase comparison of frequency signals. FIG. 1, 1'...Input terminal, 3...Flapper, 4...
... Constant voltage circuit, 5 ... Selector switch, 6 ... Nozzle, 7 ... Drive circuit, 8 ... Pilot relay,
16...Input processing means, 17...Differential amplifier, 1
8a, 18b...Piezoelectric actuator, 19...
Displacement-electrical signal converter, 21... Displacement-electrical signal converter, 22... Pressure-electrical signal converter, 30...
...Macrocomputer.
Claims (1)
力変換機構において、前記入力電流を電圧信号あ
るいはデジタル信号に変換する入力処理手段と、
この入力処理手段の出力とフイードバツク信号と
の差を演算する差動増幅手段と、動作点を決める
所定の定電圧を出力する定電圧手段と、この定電
圧と前記差動増幅手段の出力に関連する電圧とを
切り替えて駆動回路に出力する切替手段と、この
駆動回路の出力に基づいて駆動される一対の圧電
アクチユーエータと、この圧電アクチユーエータ
がフラツパの一端に上下に固定され他端にノズル
がこのフラツパに対向して対向間隔が調整できる
ように配置され絞りを介して給気圧が供給された
ノズルフラツパ機構と、このノズルフラツパ機構
のノズル背圧に対応する前記空気圧を出力するパ
イロツトリレーとを具備し、前記空気圧に対応す
る電圧信号あるいはデジタル信号を前記フイード
バツク信号として帰還することを特徴とする電気
／圧力変換機構。 In an electricity/pressure conversion mechanism that outputs air pressure corresponding to an input current, an input processing means that converts the input current into a voltage signal or a digital signal;
differential amplification means for calculating the difference between the output of the input processing means and the feedback signal; constant voltage means for outputting a predetermined constant voltage that determines the operating point; a pair of piezoelectric actuators that are driven based on the output of the drive circuit; and a pair of piezoelectric actuators that are vertically fixed to one end of the flapper and the other end of the flapper. a nozzle flapper mechanism in which the nozzle is arranged so as to face the flapper so that the distance between the nozzles can be adjusted and supply pressure is supplied through a throttle; and a pilot relay that outputs the air pressure corresponding to the nozzle back pressure of the nozzle flapper mechanism. An electric/pressure conversion mechanism, characterized in that the electric/pressure conversion mechanism is characterized in that it feeds back a voltage signal or a digital signal corresponding to the air pressure as the feedback signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8012187U JPS63187701U (en) | 1987-05-27 | 1987-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8012187U JPS63187701U (en) | 1987-05-27 | 1987-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63187701U true JPS63187701U (en) | 1988-12-01 |
Family
ID=30930636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8012187U Pending JPS63187701U (en) | 1987-05-27 | 1987-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63187701U (en) |
-
1987
- 1987-05-27 JP JP8012187U patent/JPS63187701U/ja active Pending
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