JPH027110A - High speed simulation controller - Google Patents

Abstract

PURPOSE:To attain high speed simulation control operation by storing a time shortening parameter and a time shortening operation expression, and shortening the time characteristic of the simulation control and the time characteristic of a real process control in accordance with the operation of the dynamic characteristic of the control object. CONSTITUTION:When the device is used as a real plant control system, switches 13 and 14 are switched to a contact reverse to the condition of a figure. Thus, a time shortening parameter part 33 sets a parameter N=1 to an actual process operation characteristic time shortening arithmetic part 41. Consequently, at such a time, a time shortening control is not operated, and the time characteristic of a real process control part 21 goes to the real plant characteristic. When the switches 13 and 14 are at the position shown in the figure, they are operated as the simulation process control. The flow of the signal flows in the sequence of a real plant device monitor control device 1 the actual process control part 21 an input output interface 22 a switch 13 a process simulation signal generating part 31, thus the plant can be simulated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a simulation control device used for in-house verification, on-site test run adjustment, and operation training of plants such as blast furnace equipment, yard/cement integrated control equipment, etc. .

[Conventional technology]

In-house verification of plant systems, on-site JR adjustments, and operational training are often conducted without actual processes in operation.

Conventionally, a simulation control device that simulates the dynamic characteristics of a real process, a real process control device that controls the real process, and a real process operation monitoring device that operates and monitors the real process have been combined.

In this case, the internal time characteristics of the simulated control device and the actual process control device were assumed to match those of the actual process.

Furthermore, switching between the actual process signal input/output conversion control device connected to the actual process control device and the simulation control device was performed completely off-line.

[Problem to be solved by the invention]

However, with conventional methods, in the case of plants with long-running equipment or processes with large time constants, during verification and operation training, the waiting time from the start of process operation to the completion of operation is enormous, making it extremely time-consuming. The problem was that it was inefficient.

In addition, in the past, a real process control device and a simulated control device were combined, and after in-house verification, on-site test run adjustment, and operation training were performed, the combination of the real process control device and the real process human output conversion device, the so-called actual process control device, was combined. It is necessary to switch to a process control system,
Connection change work for switching is complicated.

The present invention has been made in view of these conventional problems, and aims to improve efficiency by shortening operation time during simulated control and facilitating switching between simulated control and actual process control. do.

[Means to solve the problem]

To achieve this objective, the high-speed simulation control device of the present invention stores at least one time saving parameter and a time saving calculation formula in an actual plant control device that incorporates a control device that simulates the dynamic characteristics of an actual process. provide means,
The method is characterized by comprising means for synchronizing and shortening the dynamic characteristics and the time characteristics inside the actual process control device based on the time reduction parameter and the time reduction calculation formula in accordance with the operation of the dynamic characteristics of the controlled object. .

In this device, the I
A signal switching device for switching between the human output signal of the II control device and the actual process human output signal can be further provided.

[Effect]

In the present invention, at least one time reduction parameter and time reduction calculation formula are stored inside the actual process control device and the simulation control device, and by specifying the time reduction parameter, time characteristics matching the actual process inside the control device can be created. Short calculations are performed synchronously to speed up the operating characteristics inside the actual process control device and the simulated control device.

This enables high-speed simulated control operation and significantly reduces verification and operation training time.

In addition, a human output interface area with the control calculation section is provided inside the actual process control device, and signals input and output to this area are converted into human output signals from the actual process human output conversion device or human output signals from the simulated control device. The system determines which one to use based on the manual switching signal and automatically switches.

Thereby, the actual plant control system can be easily switched to the simulated plant control system as it is, and the time and labor involved in switching can be significantly reduced.

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.

FIG. 1 is a block diagram showing a configuration example of an actual plant control system and a simulated plant system according to the present invention. This system is comprised of an actual plant operation monitoring control device 1, an actual plant control device 2, an actual plant human output signal conversion device 3, and a process 4. Further, the actual plant control device 2 includes the actual process control device 11. It is composed of a simulation control device 12 and a real process input/output signal-simulation control device input/output signal switch 13. This switch 13 is a high-speed membrane! This is a switch for switching between pseudo controlled operation and actual controlled operation.

The real process control unit 11 has a real process control unit 21 and an input/output interface 22, and the simulation control device 1
2 has a process simulation signal generation section 31 and a time reduction parameter section 32.

The real process control device 11 and the simulation control device 12 are provided with a real process control operation time parameter section 44 and a simulation control operation time parameter section 43, respectively, in which a time reduction parameter N is set. The actual process operation characteristic time reduction calculation unit 41 and the simulated control device operation characteristic time reduction calculation unit 42 each perform calculations based on the time reduction parameter N so that the counting time of the built-in timer increases by N times, and calculate the calculated results. The time characteristics of the actual process control unit 2
1 and the simulated signal generating section 31, the time characteristics of each are shortened at the same time.

In the case of actual process control, the signal flow is as follows: actual plant equipment monitoring and control device 1 → actual process control unit 21 → input/output interface 22 → switch 13 → actual plant human output signal converter 3 → process 4.

On the other hand, in the case of simulated process control, the signal flow is as follows: actual plant equipment monitoring and control device 1 → actual process control unit 21 → input/output interface 22 → switch 13 → process simulation signal generator 31. Switches between process input/output signals and simulated control device human output signals. At this time, the time reduction parameter is divided into two paths: time reduction parameter unit 32 → switch 14 → actual process operating characteristic time reduction calculation unit 41 - + actual process control unit 21, and time reduction parameter unit 32 → simulated control device operating characteristic time. It is set along the path from the shortening calculation unit 42 to the simulated signal generation unit 31.

When this device is used as an actual plant control system, the switch 13, 14 is switched to the opposite contact point from the state shown in FIG. As a result, the time reduction parameter section 33 converts the parameter N=1 into the actual process operation characteristic time reduction calculation section 4.
Set to 1. Therefore, in this case, the time reduction control does not operate, and the time characteristics of the actual process control section 210 become the actual plant characteristics.

FIG. 2 shows an example in which the present invention is applied to top equipment control of blast furnace equipment.

Automatic control of the furnace top equipment of blast furnace equipment is provided with a furnace top equipment control timer 51 that advances every second. It is determined by the sequencer 52, and when the timer 51 counts up to the set value, an operation command is output to the target devices A to Z. In addition, we have determined an operation confirmation notch and are monitoring for abnormalities in operation. In this system, the time reduction parameter N is sent and received from the simulation control device 12 to the actual process control device 11, and the internal timers of both devices are collectively shortened in accordance with the time reduction parameter, allowing high-speed simulation of the entire blast furnace plant system. Controlled operation becomes possible.

FIG. 3 shows an example of a sequence in an actual process using a furnace top equipment as an example. (a) shows the timing at which the set value is output, and (a) shows the opening/closing operation of the device. FIG. 4 shows the relationship between time reduction by the reduction parameter according to the present invention and real time. (a) shows the real time, (b) shows the case where the shortening parameter N is 2, and (C) shows the case where the shortening parameter N is 5.

In the case of (a) and (C), the actual time elapses, respectively.
This indicates that twice or five times as much time has passed.

FIG. 5 is a flowchart of the time reduction calculation processing performed by the time reduction calculation units 41 and 42 of FIG.

When counting starts at step 100, the first
The count values t+ and "r+" of the counters and timers in the actual process operating characteristic time reduction calculation unit 41 and the simulated control device operation characteristic time reduction calculation unit 42 shown in the figure are reset, and their initial values are set to 0. Increase Δ of numerical value t
For example, t is 10'Om s, and the timer is 100[1
It is assumed that when ms is counted, steps are performed in 1 second increments. Next, in step 200, the arithmetic expression t I=
Counter count value 1 based on t I-+ + (NXΔt). Compute the count of . For example, the shortening parameter N
When is 5, 500 m5 is selected as the count value t1 in the first calculation of 100 m s. Step 1
20, if the count value is less than 10100O, step 11 is performed until the cumulative value reaches 10100O.
A decision is made to repeat the process of 0. Next second time (200m
In the sth calculation, the cumulative value is 10100O, so
At step 130, the count value of the 1 second timer is incremented by 1 second. At this time, the count value of the internal counter is 1
．． is reset to 0. This is repeated until the counting of TI is completed (step 150). This count value T
Using t as a reference time, a control timer in the actual process control section 21 and a control timer in the simulated signal generation section 31 measure time. In this way, the time is shortened according to the multiple of the shortening parameter N, as shown in FIG.

〔Effect of the invention〕

As explained above, in the present invention, at least one time reduction parameter and time reduction calculation formula are stored, and the time characteristics of the simulated control and the time characteristics of the actual process control are stored in accordance with the operation of the dynamic characteristics of the controlled object. The structure is provided with a means for shortening the time. Therefore, high-speed simulated control operation with reduced real time is possible, and verification and operation training time can be significantly reduced. In addition, by providing a means to switch between actual process human output signals and simulated control device input/output signals, it is possible to switch between simulated operation and actual plant operation without the need for connection work, reducing effort and time. can do.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG.
The figure is a block diagram showing an example of applying the present invention to furnace top equipment.
FIG. 3 is a time chart showing an operation sequence for a specific device, FIG. 4 is a diagram showing an example of time reduction, and FIG. 5 is a flow chart showing an example of time reduction calculation according to the present invention. 1: Actual plant operation monitoring control device 2: Actual plant control device 3: Actual plant human output conversion device 4: Process 11: Actual process control device 12: Simulation control device 13: Human output signal switch 14: Time saving parameter signal switching Actual process control section 22: Input/output interface 31: Simulation signal generation section 32. 33: Time reduction parameter section 41: Actual process operation characteristic time reduction calculation section 42: Simulation control device operation characteristic time reduction calculation section 43; Simulation Control operation time parameter section

Claims (1)

[Scope of Claims] 1. In an actual plant control device incorporating a control device that simulates the dynamic characteristics of an actual process, a means for storing at least one time reduction parameter and a time reduction calculation formula is provided, and the A high-speed simulation control device characterized by comprising means for synchronizing and shortening the dynamic characteristic and the time characteristic inside the actual process control device based on the time reduction parameter and the time reduction calculation formula according to the operation operation of the characteristic. . 2. The high-speed simulation control device according to claim 1, further comprising a signal switching device for switching between the input/output signals of the simulation control device connected to the real process control device and the real process input/output signals.