CN205608438U

CN205608438U - Intelligent controller

Info

Publication number: CN205608438U
Application number: CN201620433085.7U
Authority: CN
Inventors: 林善平; 连建亮; 林善安
Original assignee: FUJIAN SHUNCHANG HONG RUN PRECISION INSTRUMENTS Co Ltd
Current assignee: FUJIAN SHUNCHANG HONG RUN PRECISION INSTRUMENTS Co Ltd
Priority date: 2016-05-13
Filing date: 2016-05-13
Publication date: 2016-09-28
Anticipated expiration: 2026-05-13

Abstract

The utility model discloses an intelligent controller, including controller circuit and power supply, controller circuit is including control processing module and button module, collection module, display module, memory, control output module, first time -recorder, the second time -recorder sum counter is connected with control processing module electricity respectively, and this intelligent controller adopts each basic and ripe module, and its simple structure is with low costs, but automatic acquisition industrial control parameter PID, the control accuracy height.

Description

A kind of intelligent controller

Technical field

This utility model relates to the automation control area of industrial process, particularly relates to a kind of intelligent controller.

Background technology

Conventional industrial control unit (ICU) is mainly used in realizing the control of industry signal such as temperature, pressure, liquid level, flow etc..During control, controller controls parameter such as proportional band (P), the time of integration (I), derivative time (D) by the deviation size of collection value with the desired value of setting being substituted into, to be calculated output control signal, and flow to actuator in real time, finally make industry signal constant be scheduled in control desired value.In Industry Control, because control object is various, operating mode is complicated, when its control parameter is difficult to obtain anxious, adjust accurately, conventional practice often needs operative employee on the basis of good understanding controls meaning of parameters, constantly regulates test with its enough commissioning experience, and collection signal constant just can be made to be scheduled in control desired value, it is high to artificial requirement threshold, debugging complexity.

Summary of the invention

The purpose of this utility model is to provide a kind of intelligent controller.

A kind of intelligent controller, including controller circuitry and power supply thereof, described controller circuitry includes controlling processing module and the key-press module electrically connected respectively, acquisition module, display module, memorizer, control output module, the first timer, the second timer sum counter, described key-press module input system desired value SV with control processing module；Acquisition module gathers industry signal；Control processing module read key-press module input system target pressure SV, receive acquisition module collection industrial signal, send collection value PV to display module, make corresponding calculating, send time t1 and t2 that control instruction recorded to the first timer, the second timer and control object, reading the first timer, the second timer and deposit reading data to memorizer；Display module display collection value；Counter records is adjusted step number；First timer and the second timing record time t1 and t2 that the phase of adjusting adjacent two steps are used respectively；Data in memorizer storage tuning process.

This utility model intelligent controller, uses each basic and mature modules, its simple in construction, low cost, can automatically obtain Industry Control parameter PID, and control accuracy is high.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model intelligent controller；

Fig. 2 is the flow chart during use of this utility model intelligent controller.

Detailed description of the invention

Below in conjunction with the accompanying drawings the detailed description of the invention of this utility model intelligent controller is described in detail:

As shown in Figure 1, this utility model intelligent controller, including controller circuitry 10 and power supply 20 thereof, described controller circuitry 10 includes controlling processing module 1 and the key-press module 2 electrically connected with control processing module 1 respectively, acquisition module 3, display module 4, memorizer 5, controlling output module the 6, first timer the 7, second timer 8 sum counter 9, described key-press module 2 input system desired value SV；Acquisition module 3 gathers industry signal；Control processing module 1 read key-press module input system target pressure SV, receive industrial signal that acquisition module 3 gathers, send collection value PV to display module 4, make corresponding calculating, send time t1 and t2 that control instruction recorded to first timer the 7, second timer 8 and control object, reading the first timer the 7, second timer 8 and deposit reading data to memorizer 5；Display module 4 shows collection value；Enumerator 9 records step number of adjusting；First timer 7 and the second timing 8 record time t1 and t2 that phase of adjusting adjacent two steps are used respectively；Memorizer 5 stores the data in tuning process.

nullThis utility model intelligent controller，Acquisition module 3 gathers industry signal and sends this industry signal to controlling processing module 1，Control processing module 1 transmission of this collection value PV to be shown to display module 4，And enter to compare with the system target pressure SV inputted by key-press module 2 and deviation value (SV-1) by this collection value PV，According to comparative result，Control processing module 1 and send dependent instruction to controlling output module 6，In tuning process，Enumerator 9 records step number of adjusting，The step number of adjusting that described control processing module 1 records according to enumerator 9，Control instruction is sent successively to described first timer 7 and the second timing 8，Described first timer 7 and the second timing 8 record time t1 and t2 that phase of adjusting adjacent two steps are used respectively，Control the valley PVmin and peak value PVmax of the system output wave that acquisition module 3 is collected in adjacent two steps of above-mentioned phase of adjusting by processing module 1、And time t1 and t2 that two steps adjacent to the phase of should adjusting are used is stored in memorizer 5 respectively，Control processing module 1 by reading the valley PVmin collected in adjacent two steps and peak value PVmax in memorizer 5、And time t1 and t2 that this phase of adjusting adjacent two steps are used，Calculating system pid control parameter.

As in figure 2 it is shown, this utility model intelligent controller, during use, its step of adjusting is as follows:

1) desired value SV is set by key-press module, Self-tuning System starts, enumerator 9 sets to 0, collection is worth PV and sends extremely control processing module 1 by acquisition module 3, and collection is worth PV and compares judgement with deviation value (SV-1) by control processing module 1: if collection value PV is less than deviation value (SV-1), control processing module 1 then sends opens control output signal, and then control object is applied excitation, entrance is adjusted the first step, controls processing module 1 and enumerator 9 is put 1, and waiting system output wave rises；If collection value PV is more than deviation value (SV-1), control processing module 1 and then send closing control output signal, control object is not applied excitation, treating that system output wave declines, when collection value PV is less than deviation value (SV-1), control processing module 1 retransmits opens control output signal, control object is applied excitation, entrance is adjusted the first step, controls processing module 1 and enumerator 9 is put 1, and waiting system output wave rises；

2) when collection value PV is more than desired value SV, controlling processing module 1 and then send closing control output signal, control object is not applied excitation, enter second step of adjusting, control processing module 1 and enumerator 9 is put 2, waiting system output wave declines after reaching a crest；

3) when collection value PV is less than deviation value (SV-1), control processing module 1 then sends opens control output signal, control object is applied excitation, entrance is adjusted the 3rd step, control processing module 1 and enumerator 9 is put 3, and open the first timer 7, waiting system output wave rises after reaching a trough, records and adjusts the 3rd step minimum collection value (valley of system output wave) PVmin and be stored in memorizer 5；

4) when collection value PV is more than desired value SV, stop the first timer 7, control processing module 1 simultaneously and send closing control output signal, control object is not applied excitation, entrance is adjusted the 4th step, controls processing module 1 and enumerator 9 is put 4, open the second timer 8, waiting system output wave declines after reaching crest again, records and adjusts the 4th step maximum collection value (peak value of system output wave) PVmax and be stored in memorizer 5；

5) when collection value PV is less than deviation value (SV-1), stop the second timer 8, control time t1 and t2 that processing module 1 reads the valley PVmin in memorizer 5 and peak value PVmax and first timer the 7, second timer 8 is recorded respectively, according to formula P=(PVmax-PVmin)/A, I=B × t1 × t2/(t1+ T2), D=C × t1 × t2/(t1+ t2) calculate system pid control parameter, Self-tuning System terminates, and in its Chinese style, A, B, C are respectively controlled system fixed coefficient.When the control system of industrial temperature, for the system of being rapidly heated, system fixed coefficient A=0.33, B=3.2, C=0.8, for temperature elevation system at a slow speed, system fixed coefficient A=0.25, B=2, C=2.

This utility model intelligent controller, can be in the control system of different industrial temperatures, and system fixed coefficient can be carried to change by key-press module 2.

Claims

1. an intelligent controller, including controller circuitry and power supply thereof, it is characterized in that: described controller circuitry includes controlling processing module and the key-press module electrically connected respectively, acquisition module, display module, memorizer, control output module, the first timer, the second timer sum counter, described key-press module input system desired value SV with control processing module；Acquisition module gathers industry signal；Control processing module read key-press module input system target pressure SV, receive acquisition module collection industrial signal, send collection value PV to display module, make corresponding calculating, send time t1 and t2 that control instruction recorded to the first timer, the second timer and control object, reading the first timer, the second timer and deposit reading data to memorizer；Display module display collection value；Counter records is adjusted step number；First timer and the second timing record time t1 and t2 that the phase of adjusting adjacent two steps are used respectively；Data in memorizer storage tuning process.