JPS5953407U

JPS5953407U - automatic control circuit

Info

Publication number: JPS5953407U
Application number: JP10463582U
Authority: JP
Inventors: 山田　美寿; 大桑　久; 吉住　一成
Original assignee: 西部電機工業株式会社; 前澤工業株式会社
Priority date: 1982-07-08
Filing date: 1982-07-08
Publication date: 1984-04-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の自動制御回路の実施例を示す説明図、
第２図は圧力値の経時変化を示す説明図、第３図は間引
サイクル例を示す説明図、第４図は本考案と従来の自動
制御回路における計測値の経時変化を示す説明図、第５
図は従来の自動制御回路例を示す図面である。１：圧力センサー、２：圧力設定値記憶回路、３：比較
器、４：ノーマルフィードバック回路、５：インチング
回路、６：停止指令回路、７：モータ、８：圧力調整弁
、９：開閉回路、１０：不感帯設定記憶回路、１１：緩
動作帯設定記憶回路。FIG. 1 is an explanatory diagram showing an embodiment of the automatic control circuit of the present invention;
FIG. 2 is an explanatory diagram showing changes in pressure values over time; FIG. 3 is an explanatory diagram showing an example of a thinning cycle; FIG. 4 is an explanatory diagram showing changes over time in measured values in the automatic control circuit of the present invention and the conventional automatic control circuit; Fifth
The figure is a drawing showing an example of a conventional automatic control circuit. 1: Pressure sensor, 2: Pressure set value memory circuit, 3: Comparator, 4: Normal feedback circuit, 5: Inching circuit, 6: Stop command circuit, 7: Motor, 8: Pressure regulating valve, 9: Opening/closing circuit, 10: Dead zone setting memory circuit, 11: Slow action zone setting memory circuit.

Claims

[Scope of utility model registration request]

(1) Equipped with a measurement sensor that actually measures controlled quantities such as water pressure and flow rate, and an electric control machine such as an electric valve, and compares the memorized set value with the actual measured value of the measurement sensor so that it approaches the set value. In a control circuit that performs feedback operation of an electric control machine, a dead zone with a predetermined width above and below the set value of the controlled variable and a class operation zone with a smaller gain of the feedback operation of a predetermined width outside the dead zone are set and memorized. The automatic control circuit is characterized in that when the actual measured value falls within the normal operating range, the feedback operating gain is suppressed and gradually approaches the set value, and when it further enters the dead range, the feedback action is stopped.

(2) Feedback operating gain in class operating band
The automatic control circuit according to claim 1, wherein the electric control machine is driven in small increments by inching the driving alternating voltage of the electric control machine.

(3) The automatic control circuit according to claim 2, wherein the electric control machine is opened and closed by a non-contact switch.