JPH0573131A - Expert system - Google Patents

Abstract

PURPOSE:To provide a correspondent operation guide not to exert any adverse influence at the expert system to support an objective system. CONSTITUTION:This system is equipped with a main body 3 of the expert system provided with a correspondent operation candidate inference part 10 to receive signals from a knowledge data base 11 based on the knowledge of a skilled operator and a propriety evaluation part 9 to receive signals from the knowledge data base 11, object system 2 provided with a controlled system 5 and an automatic controller 4, data base 6 to input the state of the controlled system 5, automatic identifying function device 7 to identify the characteristic of the controlled system 5, and high-speed simulator 8 to calculate a predictive value while receiving the current system state. The correspondent operation candidate inference part 10 outputs plural correspondent operation candidates while receiving the current system state from the controlled system 5, and the propriety evaluation part 9 outputs the correspondent operation guide to an operator 1 while receiving the four kinds of inputs such as the predictive value and the knowledge from the knowledge data base 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expert system applied to support various automatic control devices.

[0002]

2. Description of the Related Art When operating a target system, when an abnormality occurs in the system, a conventional expert system displays a guide display of corresponding operations only from a knowledge base based on the knowledge of a skilled operator and the current system state. Was there. The operator was operating the system according to the guide display.

[0003]

When an abnormality occurs in the system, a corresponding operation inferred only from the knowledge base based on the knowledge of a skilled operator and the current system state is carried out, which is currently occurring. Although it may be an effective countermeasure operation for an abnormality, it may have an adverse effect on the whole or a part of the system.

[0004]

The present invention takes the following means in order to solve the above problems.

That is, as an expert system,
An expert system main body having a corresponding operation candidate inference unit that receives a signal from a knowledge database based on the knowledge of a skilled operator, a corresponding operation candidate inference unit, and a validity evaluation unit that receives a signal from the knowledge database; A target system having an automatic controller,
A database relating to the state of the controlled object for inputting the state information of the controlled object, and an automatic identification function device for receiving the signal from the database and identifying the characteristic of the controlled object
A high-speed simulator that receives information from the automatic identification function device and state information of the current system from the control target and performs a simulation of the system to calculate a predicted value, and the corresponding operation candidate inference unit is currently controlled by the control target. And outputs a plurality of corresponding operation candidate information, and the validity evaluation unit determines the current system state information from the control target, the predicted value from the high-speed simulator,
Further, the plurality of corresponding operation candidate information is received, whether the corresponding operation candidate is valid or not with respect to the present condition and future of the system, and the appropriate corresponding operation candidate is output as the operation guide information.

[0006]

In the above means, the status information of the controlled object from the controlled object of the target system is input to the database regarding the status of the controlled object. The automatic identification function device inputs the state information from the database regarding the state of the controlled object, and identifies the characteristic of the controlled object. The high-speed simulator receives current system state information from the controlled object and signals from the automatic identification function device, and calculates a predicted value of the state by simulation.

In the expert system main body, the corresponding operation candidate inference unit inputs the knowledge and the current system state information from the control target from the knowledge database, and calculates a plurality of corresponding operation candidate information. The validity evaluation unit inputs knowledge from the knowledge database, a plurality of corresponding operation candidate information from the corresponding operation candidate inference unit, and a predicted value from the high-speed simulator, evaluates the plurality of corresponding operation candidates, and evaluates the validity of the present and future. Output things as operation guide information. The operator operates the system according to the operation guide.

As described above, when an abnormality occurs in the target system, the expert system main body outputs, as operation guide information, an operation similar to that performed by a skilled operator. This operating guide is also optimal for the current and future of the system.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. The expert system main body 3 receives the knowledge database 11 based on the knowledge of the skilled operator, the corresponding operation candidate inference unit 10 for inputting the knowledge of the knowledge database 11, and the validity evaluation of the outputs of the corresponding operation candidate inference unit 10 and the knowledge database 11. It has a part 9.

The target system 2 is an automatic controller 4
And a controlled object 5 which receives an operation signal therefrom.

The database 6 regarding the state of the controlled object inputs the state information from the controlled object 5 as a database. The automatic identification function device 7 inputs the state information from the database 6 regarding the state of the controlled object and identifies the characteristic of the controlled object 5. In addition, the high-speed simulator 8 uses the controlled object 5 to detect the current system status information and the automatic identification function device 7.
A simulation is performed by receiving the output from the device, the predicted value is output, and the value is sent to the validity evaluation unit 9.

The control target 5 sends the current system state information to the corresponding operation candidate inference unit 10 and the validity evaluation unit 9.

In the above, the state information of the controlled object from the controlled object 5 of the target system 2 is input to the database 6 regarding the state of the controlled object. The automatic identification function device 7 inputs the state information from the database 6 regarding the state of the controlled object, and identifies the characteristic of the controlled object. The high-speed simulator 8 receives the current system state information from the controlled object 5 and a signal from the automatic identification function device 7, and calculates a predicted value of the state in consideration of the secular change of the system by simulation.

In the expert system body 3, the corresponding operation candidate inference unit 10 inputs knowledge from the knowledge database 11 and state information of the current system from the controlled object 5,
A plurality of corresponding operation candidates are calculated. Further, the validity evaluation unit 9 inputs knowledge from the knowledge database, a plurality of corresponding operation candidate information from the corresponding operation candidate inference unit, and a predicted value from the high speed simulator. And evaluate multiple corresponding operation candidates,
It is determined whether or not there is room to perform the corresponding operation based on the current system state. Further, based on the predicted value obtained from the high-speed simulator 8, it is evaluated whether or not the corresponding operation will adversely affect the system 2 in the future when the corresponding operation is performed. Then, one corresponding operation is selected and output as corresponding operation guide information.

The operator operates the system 2 according to the corresponding operation guide. As described above, when an abnormality occurs in the target system 2, the expert system body 3 outputs, as operation guide information, an operation similar to that performed by a skilled operator.

This operation guide is optimal for the present and future of the system. That is, the corresponding operation makes the system normal and is not adversely affected in the future.

The output of the validity evaluation section 9 may be input to the controlled object 5 for full automation.

[0018]

As described above, the present invention has the following effects. (1) When the system is abnormal, the corresponding operation guide information similar to that performed by a skilled operator is output. (2) The system will no longer guide the corresponding operation that may have an adverse effect.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

[Explanation of symbols]

1 Operator 2 System 3 Expert system main body 4 Automatic control device 5 Controlled object 6 Database (database) about the state of controlled object 7 Automatic identification function device 8 High speed simulator 9 Validity evaluation unit 10 Corresponding operation candidate reasoning unit 11 Knowledge The database

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Kazuki 1-1, Atsunoura-cho, Nagasaki-shi Nagasaki Research Institute, Mitsubishi Heavy Industries, Ltd.

Claims (1)

[Claims] 1. An expert system main body having a corresponding operation candidate inference unit that receives a signal from a knowledge database based on the knowledge of a skilled operator, a corresponding operation candidate inference unit, and a validity evaluation unit that receives a signal from the knowledge database. , A target system having a controlled object and its automatic control device, a database regarding the state of the controlled object for inputting state information of the controlled object, and an automatic identification for identifying the characteristic of the controlled object by receiving a signal from the database And a high-speed simulator that receives information from the automatic identification function device and state information of the current system from the control target and simulates the system to calculate a predicted value. Receives the current system status information from the control target and outputs multiple corresponding operation candidate information. The validity evaluation unit receives the current system status information from the controlled object, the predicted value from the high-speed simulator, and the plurality of corresponding operation candidate information, and the corresponding operation candidate relates to the present and future of the system. The expert system is characterized by evaluating whether or not it is appropriate and outputting the appropriate corresponding operation candidates as operation guide information.