JPH03171202A - Controller - Google Patents

Abstract

PURPOSE:To easily and simply construct a program even if advanced control is realized and to reduce the cost of program development by providing a control algorithm construction part. CONSTITUTION:The control algorithm construction part 4 is provided with POL, a fortran, an assembler, the compiler of various languages such as C and BASIC and interpreter. A data base for control algorithm construction 6 is accessed in accordance with a signal from an operation part 7 and algorithm is taken in. Then, the control algorithm is generated by a language designated by the operation part 7 and it is supplied to a control operation part 2. The control operation part 2, arithmetic-processes signals is1-isL supplied from an input processing part 1 based on the supplied control algorithm, generates control signals os1-osm and supplies them to an output processing part 3. Thus, a program can easily and simply be constructed and the cost of program development can be reduced even if advanced control is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Field of Industrial Application) The present invention relates to a regulating device used in chemical plants, iron ore plants, etc.

(Prior Art) Conventionally, various types of regulating devices have been proposed for use in chemical plants, iron ore plants, etc., which aim to make a certain physical quantity match a desired target value.

In particular, PID control continues to maintain its position as the mainstream control method.

On the other hand, various methods called "advanced control" are being actively introduced in control sites as a means of saving resources and energy, adapting to changes in operating conditions, and dealing with large disturbance shifts (for example, digital Examples of advanced control using systems, Volume 3, “
Instrumentation” September 1987 special issue, published by Kogyo Gijutsusha).

In particular, in recent years, applications of fuzzy control, expert systems, etc. have been popular (for example, Corona Inc., Funbutorol, No. 22).

(Problem to be Solved by the Invention) By the way, the various types of advanced controls described above can be implemented using a language called POL (Problem Oriented Language), which has been frequently used in recent years as a language for describing the control contents of the adjustment device. Once realized, programs can be built with simple tasks.

However, since the command words of POL only include command words of relatively simple algorithms that are often used such as PID control, when the above-mentioned advanced control is built horizontally using POL, it is difficult to describe the control contents in detail. There was an inconvenience that it was not possible.

In view of the above circumstances, the present invention makes it possible to easily and simply construct a program even when implementing advanced control, thereby reducing program development costs and optimizing control. The purpose of the present invention is to provide an adjustment device that can save resources and energy on the process side.

[Structure of the invention]

(Means for determining llffi) In order to achieve the above object, the adjustment device according to the present invention calculates and processes signals supplied from the controlled object side using a control algorithm set in the control calculation section. Calculate the operation output using
The adjustment device that outputs this to the controlled object side has multiple types of program languages, and creates a control algorithm in a specified program language based on the operation contents supplied from the operation unit side to calculate the chest pain. It is characterized by having a control algorithm construction section that is set in the section.

(Function) In the above configuration, when the operation content is supplied from the operation unit side, the control algorithm construction unit creates a control algorithm in the specified programming language based on the operation content and sets it in the control calculation unit. do.

(Embodiment) j[Figure I1 is a block diagram showing an embodiment of the adjusting device according to the present invention.

The adjustment device shown in this figure includes an input processing section 1 and a control calculation section 12.
, an output processing section 3, a control algorithm construction section 4, an interface 5, a control algorithm construction database 6, and an operation section 7, and when the operation section 7 is operated, POL, Fortran, Assembler, CSBASI etc.
After one of various languages such as C is specified, a control algorithm is constructed based on the control contents etc. input in the specified language, and the process signals i1~ input from the process side are constructed based on this control algorithm. The manipulated variables 01 to On corresponding to ik are generated and output to the process side.

The operation section 7 includes an operator console 8, a CRT 9, etc., and when an operator operates the operator console 8 while looking at a CRT screen, it generates a signal corresponding to the content of the operation and supplies it to the interface 5.

The interface 5 is equipped with various signal conversion circuits,
The signal supplied from the operating section 7 is converted into a predetermined signal and supplied to the control algorithm construction section 4.

In addition, the control algorithm construction database 6 is POL
, Fortran, Atsempra, C. This is a part where algorithms created in various languages such as RASIC are stored in a library format, and when a registration command is supplied from the control algorithm construction unit 4, the algorithm supplied together with this registration command is stored in a library format,
Further, when a read command is supplied from the control algorithm construction section 4, the stored algorithm is selectively read out in response to the read command and supplied to the control algorithm construction section 4.

The control algorithm construction section 4 is equipped with compilers and interpreters for various languages such as POL, Fortran, Assembler, and C%RAS I C, and the control algorithm construction database 6 is configured according to the contents of signals supplied from the operation section 7. While accessing and importing the algorithm, a control algorithm 1 algorithm is created in the language specified by the operation contents of the operation section 7, and this is sent to the control calculation section 2 and the control algorithm construction database 6.
supply to.

The input processing unit 1 also receives various input signals i 1 supplied from the process side in analog signal format and digital signal format.
- Takes in i k to generate signals isl to isl in a preset format, and supplies these to the control calculation section 2.

The control calculation unit 2 processes the signals isl to isl supplied from the input processing unit 1 based on the control algorithm supplied from the control algorithm construction unit 4, generates control signals osl to osm, and outputs them. It is supplied to the processing section 3.

The output processing unit 3 generates analog and digital output signals 01 to on indicating the manipulated variables based on the control signals osl to osm supplied from the control calculation unit 2, and outputs these to the plant side.

In this way, in this embodiment, the operator can construct the control algorithm in a language that is familiar to him among various languages such as POL, Fortran, Assembler, C, and RASIC, thereby realizing advanced control. Programs can be easily and simply constructed even when the process is being carried out, thereby reducing program development costs, as well as optimizing control and achieving resource and energy savings on the process side. be able to.

Furthermore, since the BASIC language commonly used in personal computers and the like can be used, a control algorithm can be constructed without causing any discomfort to the operator.

Furthermore, in this case, for example, generally known fuzzy operation techniques (for example, R.I. Levlne et al.
．． A Cosprehens1ve (ilde t
o Al and Expert Systems Ch.
．． 7) allows control incorporating fuzzy operations to be performed using the BASI G language.

In addition, in the above-described embodiment, since the control algorithm construction database 6 is used, the control algorithm can be easily constructed, modified, and changed, thereby reducing maintenance and maintenance costs on the process side. can be significantly reduced.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to easily and simply construct a program even when realizing advanced control, thereby reducing program development costs and optimizing control. As a result, it is possible to achieve resource and energy savings on the process side.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of an adjustment device according to the present invention. 1... Input processing unit 2... Control calculation unit 3... Output processing unit 4... Control algorithm construction unit 6... Control algorithm construction database 7...
Operation section

Claims (1)

[Claims] (1) In a control device that calculates a manipulated output by processing a signal supplied from a controlled object side according to a control algorithm set in a control calculation section, and outputs this to the controlled object side, multiple types of programs are used. a control algorithm construction unit that creates a control algorithm in a specified program language based on the operation content supplied from the operation unit side and sets it in the control calculation unit. Device.