Control system, control device, and control method

A control device that controls a control object, the control device comprising:

• storage device that stores a group of feature quantities which are generated from data acquired from the control object and which are defined by one or more elements;
• and
• a processor, wherein the processor executes programs to implement a control method,
• wherein the processor creates a feature quantity from data which is acquired from the control object on the basis of a first parameter associated with the number of elements defining the feature quantity,
• wherein the processor acquires a degree of deviation between the created feature quantity and the group of feature quantities stored by the storage device on the basis of a second parameter associated with a range in the group of feature quantities which is used to acquire the degree of deviation,
• wherein the processor detects an abnormality occurring in the control object on the basis of the acquired degree of deviation and a threshold value,
• wherein the processor instructs to start an execution of the operation of acquiring the degree of deviation on the basis of an execution cycle of the operation of acquiring the degree of deviation,
• wherein a value of at least one of the first parameter and the second parameter is changeable, wherein the processor outputs a period of time required for the operation of acquiring the degree of deviation,
• wherein the processor outputs one or more candidates, which are able to shorten the period of time required for the operation of acquiring the degree of deviation, from the value of at least one of the first parameter and the second parameter.

A control method for a control device to control a control object, wherein the control device comprises a processor executing programs to implement the control method, the control method comprising:

• creating, by the processor, a feature quantity from data which is acquired from the control object on the basis of a first parameter associated with the number of elements defining the feature quantity;
• acquiring, by the processor, a degree of deviation between the created feature quantity and a group of feature quantities which are stored by storage device on the basis of a second parameter associated with a range in the group of feature quantities which is used to acquire the degree of deviation;
• detecting, by the processor, an abnormality occurring in the control object on the basis of the acquired degree of deviation and a threshold value;
• starting, by the processor, an acquisition of the degree of deviation on the basis of an execution cycle of the acquisition of the degree of deviation,
• wherein a value of at least one of the first parameter and the second parameter is changeable;
• outputting, by the processor, a period of time required for the operation of acquiring the degree of deviation;
• and
• outputting, by the processor, one or more candidates, which are able to shorten the period of time required for the operation of acquiring the degree of deviation, from the value of at least one of the first parameter and the second parameter.