JPS63293677A - Designing device for loop controller - Google Patents

Abstract

PURPOSE:To obtain a control function conforming to the purpose of a control object by securing a hierarchical structure for design information to be inputted in response to the detailed levels of control contents and inputting successively those design information in the order of higher levels. CONSTITUTION:A system forming part 2 receives the design information needed for acquisition of a loop control function of an object process from a design information input part 1 to perform a loop designing job and also displaying (plotting) this designing result at a display part 3. In this case, the design information has a hierarchical structure corresponding to the detailed levels of the control contents and is inputted successively in the order of higher levels. Thus even a complicated and high-level function can be easily obtained. The loop designing job is carried out with input of the design information at each level owing to the hierarchical structure of the design information.

Description

[Detailed Description of the Invention] [Industrial Field of Application] DDC (Direct Digital Controller) is used in various plants in various industrial fields such as electric power, steel, chemicals, and foods for the purpose of labor saving and operation automation. ), and the present invention relates to an improvement of a design device for such a loop control device.

[Conventional technology]

In recent years, with the rapid development of computers, control functions in target plants have become more sophisticated and the level of automation has expanded. Even in loop control, mainly PID control, it is now possible to switch control operations, change various setting values, and There is an increasing need for detailed control such as close connection with sequence control functions ◇For this reason, the loop H push device is suitable for use as a control device for simple PID control or for complex and advanced control. A control device is present.

[Problem that the invention seeks to solve]

In the former case, if the function required by the controlled object is simple, the loop control function is simple and easy, but on the other hand, it is very difficult to realize a complex function with advanced adjustment operations. −
However, while the latter can realize highly functional control, the amount of information handled during design is complex, and even when designing a simple control function, the same structural design method as when designing a highly functional control is required. As a result, there was a problem in that productivity and quality deteriorated.

Therefore, an object of the present invention is to provide a design device that can construct a desired control function that meets the purpose of a controlled object.

[Means for solving interlayer points]

The design information to be entered corresponds to the level of detail of the control content! f! It is constructed by sequentially inputting the information from the highest level to the highest level, and at the lowest level of @chip, the functions of the minimum unit level of calculations in loop control are connected to each other and constructed.

[Effect]

By constructing as described above, it is possible to design a control device with a high degree of freedom depending on the complexity of the control function.

〔Example〕

FIG. 1 is a diagram showing an embodiment of the present invention. That is, the system construction unit 2 uses the F! j! The loop design is performed by receiving the accounting information from the input section 1, and the result is displayed (drawn) on the display section 3. In addition, input section 1
As the display section 3, a CRT device or the like is used, and as the system construction section 2, a computer is used. Here, we assume that the design information is entered in a hierarchical structure corresponding to the level of detail of the control content, in order from the highest level, and
At the lowest level of IiM, complex and advanced functions can be easily constructed by combining and connecting functions at the lowest level of calculation in loop control. As shown in the table below,
Loop design is performed by dividing the loop into four levels, aI to (2), and inputting design information such as a table at each level.

Embodiments of the present invention will be specifically described below with reference to FIGS. 2 to 7. Note that Figure 1iIZ is an explanatory diagram for explaining the display screen, Figure 3 is an explanatory diagram for explaining the basic loop type menu, and Figure 4 is an explanatory diagram for explaining the advanced loop type menu. Figure 5 is an explanatory diagram for explaining an example of a loop connection screen, Figure 6 is an explanatory diagram for explaining an example of a module connection screen, and Figure 7 is an explanatory diagram for explaining an example of a module internal connection screen. It is a diagram.

First, when an instruction for loop design is given to the system construction section, the system construction section displays a screen as shown in FIG. 2 via the display section. Here, 11 is an area that defines the name of the loop to be controlled (a unique name given to a variable, and "temperature inside the diffusion column" shown in Fig. 6 corresponds to this), and 12 is an area where Figure 13 (a), (
(b) Select from basic menus prepared in advance. In addition, if the desired loop type is not in the basic menu, that is, if you want to have a more advanced configuration, please use the fourth option.
A configuration as shown in FIG. 1 (a) or (b) is defined, and 41 or 42 is defined and used in -a to obtain the desired configuration. In addition, Figure 2 or #! In FIG. 4, the mark "." in front of a block indicates that the block is a part to be set, and the same applies hereafter.

If, for example, "ratio control" as shown in FIG. 3 (c) is defined as a loop configuration in the stage (level I) of FIG. 2, the screen contents of the display section will be as shown in FIG. 5. Here, 5
1 is a region that defines the input signal (analog signal, output or digital signal, output) of the loop control, and 52 is a region that defines its output signal. Therefore, roughly speaking, by setting predetermined information in these areas 51 and 52, the work at this stage (level ■) is completed.

General-purpose (basic) loop control functions such as ratio control, constant value control, or cascade control can be designed at the above stages, but if you want to build more detailed functions, w
Proceed to the stage shown in Figure S6 to continue the design. That is, the sixth
In the figure, the definition information up to FIG. 5 is displayed on the screen, and in addition to this, information such as connection information with the Siegen control function and external signal tracking of the adjustment output is defined. Here,
The former is defined in block 61, and the latter in block 62.

As the final step, proceed to the screen that displays the internal connections of the module shown in FIG. 7 to begin designing. 70 in fH7 diagram
The part indicated by represents the arithmetic unit for loop control (the type is represented by the number l, 2, etc.).

), 71 and 72 respectively mean its input and output.

Furthermore, the parts indicated by 73 and 74 are the input and output of the module, and 75 means the type of arithmetic unit, and the information corresponding to the content defined up to the stage of Fig. 5 is displayed. be done. By selecting a computing unit from the menu and defining connections between units, these units are connected via software, making it easy to build complex and advanced control functions. be able to. Similarly, loop configurations shown in FIGS. 4(a) and 4(b) can also be designed.

In this way, the screens in Figures 2 and 5 to 7 are hierarchically structured to correspond to the level of required functionality or design detail, so the It can be used as an effective means for edicting the contents.

〔Effect of the invention〕

According to this invention, each design screen is structured hierarchically from the general content to the detailed content in accordance with the designer's general and natural thinking order, so the designer can Therefore, simple controls can be defined with a few constants, and complex controls can be defined with fine-grained definitions in a clearly organized manner. It can be done efficiently. Furthermore, since each design screen is hierarchically configured for each defined content, only the information at the level required by the designer can be extracted and can be checked and changed after v#.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing an embodiment of the present invention, Figure 2 is an explanatory diagram for explaining the display screen, Figure 3 is an explanatory diagram for explaining the basic loop type menu, and Figure @4 is an explanatory diagram for explaining the display screen. Explanatory diagram to explain the advanced loop type menu, @5
The figure is an explanatory diagram for explaining an example of the loop connection screen.
The figure is an explanatory diagram for explaining an example of module connection plane.
FIG. 7 is an explanatory diagram for explaining an example of the module internal connection screen. Description of symbols 1... Input section, 2... System construction section, 3... Display section, 11... Loop name definition area, 12... ...Loop type definition area, 51
... Input signal definition section, 52 ... Power signal definition section, 70 ... Arithmetic unit, 71 ...
...Arithmetic unit input section, 72...Arithmetic unit output section, 73...Module input, 74...
...Module output, 75...Arithmetic unit type. Agent Patent Attorney Akio Namiki Agent Patent Attorney Kiyoshi Matsuzaki 215fi @311! ! 1 (A) (Q)
(c) Sakae 1 salary/a D Skate Calendar “O Hima J Island 1” Mitomi 4 Figure

Claims (1)

[Claims] In a loop control device design device for displaying and constructing a loop control device that is equipped with an input device and a display device and has a loop control mechanism suitable for a target process, design information to be input is provided. is constructed by sequentially inputting the hierarchical structure corresponding to the level of detail of the control content, and at the lowest level of the hierarchy, the functions at the minimum unit level of calculations in loop control are connected to each other. A design device for a loop control device characterized by: