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Control apparatus using time proportioning control

A time-proportional and control device technology, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as inability to obtain control results

Inactive Publication Date: 2010-08-04
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the desired control result cannot be obtained

Method used

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  • Control apparatus using time proportioning control
  • Control apparatus using time proportioning control
  • Control apparatus using time proportioning control

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] Hereinafter, referring to the accompanying drawings, the time proportional control type control device according to the embodiment of the present invention will be described as follows: Example to illustrate.

[0036] FIG. 1 shows a schematic configuration of a control system in a time proportional control type control device according to a first embodiment. In FIG. 1 , 10 is a time-proportional control type control device (control unit) mainly composed of a microprocessor or the like, and 20 is a control object such as a thermostatic bath. The temperature of the control object 20 is controlled by the cooler 21 (accurately, the temperature of a constant temperature bath or the like is the control object), and the temperature is detected by the temperature sensor 22 (control value PV).

[0037] The control unit (time proportional control type control device) 10 basically has a control target temperature (target set value SP) 12 set by an operator through an operation un...

Embodiment approach 2

[0050] Hereinafter, a second embodiment of the time-proportional control type control device according to the present invention will be described.

[0051] The schematic configuration of the control system of the second embodiment is shown in FIG. 7 . As shown in the figure, the structure is such that when the control target temperature (target set value SP) 12 set by the operation unit 11 is changed in the output control unit 16, or the operation amount obtained by the PID control unit 14 is changed. When the MV (PID output) changes greatly, the operation of the time-proportional output unit 15 is controlled as follows. In particular, the structure is such that the output control unit 16 controls the operation of the time-proportional output unit 15, and the time-proportional output unit 15 should add a conduction ( ON) time proportional signal.

[0052] Specifically, the time-proportional output unit 15 outputs a time-proportional signal Ton having a time width correspondi...

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Abstract

A control apparatus used in a control system in which the cycle time of a time proportioning signal is long, for example, a temperature control system using a cooler. Even if a manipulation value MV with respect to the cooler is drastically changed along with change of a control target value SP, the activation timing of a time proportioning output section is reset with the changing timing, so that a time proportioning signal Ton is newly generated. Alternatively, with the changing timing, the time proportioning output section is reactivated to generate the deficiency of the time proportioning signal Ton according to an increasing amount of the manipulation value MV. As a result, the time proportioning signal Ton is changed with an excellent follow-up ability.

Description

technical field [0001] The present invention relates to, for example, a time-proportional control type control device suitable for controlling temperature by ON / OFF control of a cooler. Background technique [0002] In temperature control of a constant temperature bath, temperature control of a plastic raw material for injection molding, etc., the heating capacity of a heater (heater) and the cooling capacity of a cooler are used separately as necessary. This kind of control is called heat and cool control, and its structure is deliberately made: according to the control target temperature (set point SP (set point)) set by the operator and the control detected by the sensor The temperature (control value PV (process value)) of the object is deviated, and the manipulation value MV (manipulation value) to the heater or the cooler is obtained, and the operation of the heater and the cooler is respectively controlled according to the manipulation value (for example, refer to Ja...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/02
Inventor 平山博文菅原文仁
Owner YAMATAKE HONEYWELL CO LTD