Plant control apparatus

A technology for equipment control and equipment, which is applied in the control of combustion, adaptive control, electrical program control, etc., to achieve the effect of improving skills, improving reliability, and deepening understanding
CN101221415BActive Publication Date: 2012-07-04HITACHI LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HITACHI LTD
Publication Date
2012-07-04

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Abstract

The invention provides an equipment control device which analyzes the effect of altering operation signal in short time, obtains the physical reason of the effect and displays the analytical results. The equipment control device is provided with a measurement signal DB(210), an operation signal DB(250), a numerical value analysis executing unit DB(220), a numerical value analytical result DB(240), a model (230)used for estimating a value of a measurement signal for an operation signal; a learning unit (260) using the model, a learning information DB(270), a control logic DB(290) of information used by an operation signal generating unit (280), a knowledge DB(400) for equipment running characteristics, an analyzing unit (300) which processes the information in the numerical value analytical result DB(240) by information in the knowledge DB(400), learning information DB(270), operation signal DB (250) and measurement signal DB(210), wherein the analyzing unit comprises a learning base analyzing unit (310) checking adequacy of an operation method, a signal analyzing unit (320) for evaluating an effect of the operation signal upon the plant and presence / absence of an abnormal signal, and at least one of a knowledge DB updating unit (330) correcting information in the knowledge DB (400).
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Description

technical field

[0001] The present invention relates to equipment control devices for thermal power generation equipment and the like. Background technique

[0002] In the equipment control device, the measurement signal from the equipment to be controlled is processed, and the operation signal to be given to the controlled object is calculated. An algorithm for calculating the operating signal is installed in the control device so that the measured signal of the device meets its target value.

[0003] There is a PI (proportional-integral) control algorithm as an algorithm used for controlling the equipment. PI control is to multiply the deviation between the measurement signal of the device and its target value by the proportional gain, and then add it to the time-integrated value of the deviation, so as to derive the operation signal for the control object. A control algorithm using PI control can be visualized in a block diagram and it is clear how or why it works. Ty...

Claims

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