Title:
FLOW RATE CONTROLLING DEVICE
Document Type and Number:
Japanese Patent JPS59206909
Kind Code:
A
Abstract:
PURPOSE:To control the flow rate of a flow flowing through a course reaching a load by using a previously set aimed value and actually measured value, by installing a means, etc., which fetch the flow rate of the flowing course of an actuator at a prescribed timing and compare the fetched value with an aimed value. CONSTITUTION:A means, etc., which successively fetch the flow rate of the flowing course of an actuator at a prescribed timing and compare the fetched value with a previously set aimed value, are installed. For example, A flow rate discharged from a pump 1 is sent to a hydraulic motor 3 through an electromagnetic proportional flow rate regulating valve 2 and a load, actuator 4, is driven and, at the same time, discharged oil from the hydraulic motor 3 is discharged to a tank 6 from a flowing course 5 and measured with a flowmeter 7. Then the flow rate flowing to the hydraulic motor 3 is controlled by controlling the electromagnetic proportional flow rate regulating valve 2 based on the measured value of the flowmeter 7 so that the flow rate reaches an aimed flow rate value. Thereafter, an electric signal Yj is fetched by means of a timing circuit (a) through a pickup (b) at a prescribed timing and the signal Yj is compared with an aimed value Xj (d) set in a flow rate setter (c) by means of a comparator (e).
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Inventors:
MASUDA KENJI
Application Number:
JP8199283A
Publication Date:
November 22, 1984
Filing Date:
May 10, 1983
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
B22D17/32; B29C35/00; B29C45/00; B29C45/17; B29C45/82; F15B11/04; G05B21/02; G05D7/06; (IPC1-7): B22D17/22; B29F1/00; F15B11/04; G05B21/02
Domestic Patent References:
| JPS57116911A | 1982-07-21 |
Attorney, Agent or Firm:
Aoyama