PS4 Sucosoft S40 h1319g.pdf

Reference Manual for Function Blocks

APP-RTT-E-GB

Sucosoft S40 Application Software

Closed-Loop Control Toolbox

04/02 AWB2700-1319-GB

1 st published 1999, edition 07/99

2 nd edition 04/02,

see list of revisions on next side

Author: Rainer Tenhagen

Editor: Thomas Kracht

Translator: Terence Osborn, Karin Klinke

All brand and product names are trademarks

or registered trademarks of the owner

concerned.

translation.

No part of this manual may be reproduced in

any form (printed, photocopy, microfilm or

any otherprocess) or processed, duplicated or

distributed by means of electronic systems

without written permission of Moeller GmbH,

Bonn.

Subject to alteration without notice.

List of revisions to the manual AWB2700-1319-GB

Edition

date

Page

Description

New

Modifi-

cation

Omitted

04/02

145

U_OSC1000_oscilloscope

149

U_OSC8_oscilloscope

377

U_rd_ms_ramp_delay

250

U_PID_16Bit_controller

291

U_controller_PDM_parameter_trans x

370

U_PT1_16Bit_Filter

406

U_FUZ_12_FUZZY_1I_2T

410

U_FUZ_13_FUZZY_1I_3T

415

U_FUZ_15_FUZZY_1I_5T

420

U_FUZ_17_FUZZY_1I_7T

420

U_FUZ_19_FUZZY_1I_9T

445

U_FUZ_27_FUZZY_2I_7T

463

U_FUZ_35_FUZZY_3I_5T

473

U_FUZ_43_FUZZY_4I_3T

473

U_FUZ_52_FUZZY_5I_2T

473

U_FUZ_53_FUZZY_5I_3T

474

U_FUZS4_weighted_output_variable x

477

U_FUZS8_weighted_output_variable x

482

U_FUZS12_weighted_output_variable

04/02 AWB2700-1319-GB

Contents

1 Basic Information and Technical Data

General

Philosophy of the CTT

Planning and handling

Technical data and other information

Application solutions and other uses for the CTT

2 Mathematical, logic and other

Basic Function Blocks

Basic mathematical functions

Interpolations

Logic functions

122

Other functions

128

Visualisation

145

3 Basic Function Blocks for

Closed-loop Control

153

Elementary basic function blocks for

closed-loop control

153

Ramp function

169

Non-linear control elements

189

PTn systems

200

PID controller settings

209

4 Controllers

217

Fundamentals and general information

217

PI-/PID controller with 12-bit standardisation

240

PID controller with parameter options

252

PI split range controller

259

PID autotuning controller

270

PID controller

291

PD three-step controller

294

PDI multi-variable controller

300

Unsteady controllers

308

Contents

04/02 AWB2700-1319-GB

5 Pulse Duration Modulation Systems

315

Fundamentals and general information

315

PDM with time inputs

321

PDM with time inputs and

dynamic length of period

327

PDM for split range controllers

331

PDM for solid-state relays

336

6 Signal Filters, Processing and Limiting 341

Signal limiting function blocks 341

Monitors for limiting values and tolerance bands 346

Signal smoothing filters

367

7 System Simulations

379

Simulation of a PTn control system

379

8 Fuzzy Logic Systems

391

Fundamentals and general information

391

Fuzzy logic system: 1 input, 2 terms

406

Fuzzy logic system: 1 input, 3 terms

410

Fuzzy logic system: 1 input, 5 terms

415

Fuzzy logic system: 1 input, 7 terms

420

Fuzzy logic system: 1 input, 9 terms

420

Fuzzy logic system: 2 inputs, 2 terms

421

Fuzzy logic system: 2 inputs, 3 terms

427

Fuzzy logic system: 2 inputs, 5 terms

435

Fuzzy logic system: 2 inputs, 7 terms

445

Fuzzy logic system: 3 inputs, 2 terms

446

Fuzzy logic system: 3 inputs, 3 terms

453

Fuzzy logic system: 3 inputs, 5 terms

463

Fuzzy logic system: 4 inputs, 2 terms

464

Fuzzy logic system: 4 inputs, 3 terms

473

Fuzzy logic system: 5 inputs, 2 terms

473

Fuzzy logic system: 5 inputs, 3 terms

473

Fuzzy basic function block

474

Index

497

04/02 AWB2700-1319-GB

1 Basic Information and

Technical Data

General

Tool for programming the IEC 1131-3

with Sucosoft S40

The closed-loop control toolbox (CTT) can be integrated in

Sucosoft S40 as a library. The function blocks are then

available under the menu item “Symbols r Application

function block”.

What can be implemented with the CTT?

The CTT can be used for the following tasks:

• Standard closed-loop control; PID controller and PDM

(pulse duration modulation, also known as pulse width

modulation, PWM)

• Application solutions; optimised concept solutions can be

implemented quickly by combining various types of

function blocks, such as fuzzy logic and PID controllers.

• Special needs for closed-loop control; unusual functions,

such as PDM based on noise shaping (suitable for highly

dynamic processes) and autotuning controllers are also

included in the CTT.

• The mathematical basis of the CTT can be used

independent of the closed-loop control technology, to

expand the range of a PLC’s functions. As an example,

there are function blocks for interpolation and

trigonometric functions.

For which controllers can the CTT be used?

The RTT can be used with all controllers which can be

programmed with S40, e.g. PS4-201, PS416 and PS4-341.

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