ASPECT-f

Advanced control algorithms for programmable logic controllers

Fuzzy-Gain Scheduling Controller with On-line Learning and Tuning

The controller is intended for control of highly nonlinear processes, where the process dynamics vary depending on the operating point. For example, a process exhibits very fast dynamics in a “high" region and slow dynamics in a "low" region. A standard PID controller tuned for good performance in the "high" region performs sluggishly in the "low" region. The mentioned operating point or region is specified by a so-called scheduling variable that may be selected either as the current process output value, the controller output signal, or an external signal.
The controller could be effectively used on processes:

  • Heating exchangers
  • Hydraulic plants
  • Level control
  • Chemical and bioreactors
  • Neutralization
  • Control of pH

FEATURES:

  • Control system, intended for closed loop process control;
  • Designed for efficient control of 'demanding' processes (nonlinear, slowly time variant, with dead time);
  • Better performance than the conventional PID controller;
  • Scheduling or switching of controller parameters;
  • Automatic tuning of controller parameters using a nonlinear model of the process;
  • Nonlinear process model: fuzzy set of local linear models;
  • On-line learning of the nonlinear model by analyzing process signals during experiments or regular closed loop operation;
  • On-line control performance monitoring;
  • Control system implemented on a standard Mitsubishi PLC platform;
  • No expensive hardware required;
  • Operator interacion via standard industrial HMI similarly to conventional PID controllers;
  • Connection to SCADA is possible;
  • Simple commissioning procedure;
  • Applied and tested on several types of industrial processes;

Application example: pressure difference control (nonlinear, time-variant process)


[Translate to English:] Energy Control Pack

[Translate to English:] in brezplačen Apple iPad

[Translate to English:] Energy Control Pack

INEA SR was a Silver Sponzor

on fair Business and professional practice

INEA SR was a Silver Sponzor

Diamond Distributer Status

granted to company INEA RBT, member of INEA group

Diamond Distributer Status