摘要:
A master controller receives a load demand and a plurality of plant data from a heat power plant and outputs command signals on at least two of an electric power, a feed water flow rate, a fuel flow rate, an air flow rate and a recirculation gas flow rate of the plant required to achieve the load demand. A plurality of sub-loop controllers independently provided one for each of the command signals provide control quantities for controlling respective control ends in accordance with the command signals. A transmission loop is arranged between the sub-loop controllers and the master controller. Drive means drive the control terminals provided one for each of the control quantities supplied from the sub-loop controllers. An I/O bus is arranged between one of the sub-loop controllers and the drive means driven by the command signal for the one sub-loop controller. Detection means detect the plant data to be delivered to the master controller or the sub-loop controllers.
摘要:
A distributed control system for a plant includes an electric equipment room for supplying electric power to a plurality of field apparatuses constituting parts of the plant by way of a plurality of operation terminals. Apparatuses for controlling the function units are provided distributively in the field in which the field apparatuses to be controlled are installed. Operation terminals to be controlled by the control apparatus are installed in the field.
摘要:
A system and a method of monitoring and displaying in which control screen indicating a control data of a control device for process control displayed on the display screen of a display unit by a touch operation on a diagram of the control device, the control data being further selected by another touch operation. The display condition of the control data display area thus changes, the operator being permitted to visually check whether the operation has been selected correctly. After visual confirmation, a switch disposed outside of the display screen and corresponding to the called control screen is operated to start the operation of the control device determined for control for the first time at this time point. In case of a combined display of a control device and a control screen, on the other hand, a first display unit is utilized such that the called control screen is displayed at a position far from the control device to be controlled, thereby not hiding the control device display. The control screen may be moved to a given position on the system diagram. A second display unit is utilized such that the original system diagram is displayed in a reduced form in combination with and not superimposed on the called control screen. The control screen and the control-related screen are called repeatedly so that when the reduction rate of the original system diagram exceeds a critical value, the reduction rate is fixed to a predetermined value and the control screens are displayed in scroll.
摘要:
A safeguard arrangement for a plant, which comprises a plant auxiliary provided with a lid and so designed that the lid is opened for maintenance of the inside thereof, switching means installed on a piping connected to said plant auxiliary, and driving means to give a driving output to the switching means in response to an opening or closing instruction signal for said switching means, and which is employed when operations for maintenance of the aforesaid plant auxiliary are executed, is provided additionally with lid opening detecting means to detect the opening of the lid of the aforesaid plant auxiliary or the release of locking means thereof, in gearing with either of them, and checking means to check the opening of the aforesaid switching means on the basis of the opening instruction signal for the switching means when it is detected by said lid opening detecting means that the lid is opened or to be opened.
摘要:
A safeguard arrangement for a plant, which comprises a plant auxiliary provided with a lid and so designed that the lid is opened for maintenance of the inside thereof, switching means installed on a piping connected to said plant auxiliary, and driving means to give a driving output to the switching means in response to an opening or closing instruction signal for said switching means, and which is employed when operations for maintenance of the aforesaid plant auxiliary are executed, is provided additionally with lid opening detecting means to detect the opening of the lid of the afore-said plant auxiliary or the release of locking means thereof, in gearing with either of them, and checking means to check the opening of the aforesaid switching means on the basis of the opening instruction signal for the switching means when it is detected by said lid opening detecting means that the lid is opened or to be opened.
摘要:
A knowledge information generating system including: a fundamental rule storage for making and storing, for each process data to be controlled, another process data relating to the former and the relations between these process data in advance as fundamental rules; a process data input processor for inputting and storing the process data to be controlled; a knowledge information collection necessity decider for detecting that the process data obtained from the process data input processor have changed or deviated from a predetermined relation; a knowledge information editor for fetching the fundamental rules relating to the process data, which are decided to be collected by the knowledge information collection necessity decider, from the fundamental rule storage, to edit the process data on the basis of the relations between the data group stored in the process data input processor and the process data stored in the fundamental rules; and a knowledge data base for storing the knowledge information obtained from the knowledge information editor.
摘要:
A control system for an industrial plant receives plant data and combines that plant data with a plurality of graphical patterns representing the plant. In this way a series of prepared displays are created to be displayed fox a user of the control system. If the user wants to simplify one or more of the displays, in order to make it more clear, the control system has means for modifying the displays, and displaying that modified display. The modification may be one of a number of possibilities such as deletion (masking) part or all of the display. In this way, the full plant information may be presented, or more limited information may be presented, e.g. to a more experienced user.
摘要:
An abnormality monitoring system comprises controller for changing monitoring frequency according to the operating state of devices to be monitored and the degree of monitoring importance and controller for correcting an inputted monitor picture by computing a positional shift of the monitor picture to a reference picture using a mark position of the monitor picture and a mark position of the reference picture, wherein, when abnormality is detected, the contents of the abnormality and the contents of processing against the abnormality are displayed as a guidance.
摘要:
There is provided a control apparatus including a function of generating an operation signal applied to a control subject and a model that simulates characteristics of the control subject, a function of receiving an evaluation value signal calculated based on a measurement signal obtained by applying the operation signal to the control subject and the model, and a function of learning to generate the operation signal such that an expected value of the sum of the evaluation value signals obtained from a present state to a future state is either maximum or minimum in which the evaluation value signal calculated based on the measurement signal from the model is calculated by adding a first evaluation value obtained based on a deviation between the measurement signal obtained from the model and a setpoint value, and a second evaluation value obtained based on a difference in characteristics between the model and the control subject.
摘要:
A node device according to the present invention includes an adjustment unit (GMPLS control unit) for, when an anomaly occurs on a route toward another node device, adjusting weighting of the route, and performs routing in Generalized Multi-Protocol Label Switching (GMPLS) control based on the adjusted weighting.