The effect of cascade tuning on control loop performance is analyzed in the framework of a monitoring system implemented in a refinery plant. Improper (too conservative) tuning of the inner loop may bring to ambiguous or apparently wrong verdicts on the evaluation of single loop performance. Starting from the evidence that operators actions can be different from suggestions given by the monitor...

In recent years, noniterative Correlation-based Tuning (CbT) and Virtual Reference Feedback Tuning (VRFT) have been proposed as an alternative to the standard model-based approach for model-reference control design. In this work, the problem of input design for direct data-driven controller tuning methods is investigated. For bounded input energy, the excitation signal is designed such that the...

In recent years, direct data-driven controller tuning methods have been proposed as an alternative to the standard modelbased approach for model-reference control design. In this work, the problem of input design for noniterative direct datadriven techniques, namely Virtual Reference Feedback Tuning (VRFT) and noniterative Correlation-based Tuning (CbT), is investigated. For bounded input energ...

The modelling, numerical simulation and intelligent control of an expert HVAC (heating, ventilating and air-conditioning) system having two different zones with variable flow-rate were performed by considering the ambient temperature in this study. The sub-models of the system were obtained by deriving heat transfer equations of heat loss of two zones by conduction and convection, cooling unit ...

— This article reports on the development and implementation of an algorithm for the design of spatially-distributed feedback controllers for the wide variety of physical processes that are included in cross-directional control of industrial paper machines. The spatial and temporal structure of this class of process models is exploited in the use of the two-dimensional frequency domain for anal...

Abstract: This paper describes DB(n) control algorithm extended on Antiwindup and state space version of algorithm. Author derived extended version of algorithm. This version of algorithm in conjunction with on-line identification has the adaptive self-tuning performance. The synthesis was derived for control loop with proportional third order behaviour of controlled plant. However, the algorit...

Active Noise Control (ANC) systems are developing rapidly because of their improvements in environmental noise reduction. ANC is based on either feedforward or feedback control. Feedback structures are employed in applications that the reference signal is not available. The step size of filters used in ANC systems plays an essential role in performance of the system. Any variation from the appr...

This contribution demonstrates possibility of delta models for identification and process control of higher order plants by the help of self-tuning delta controllers. Simulation will show behaviour of second order delta controllers used for control of higher order plants. It is used pole placement method and method Ziegler-Nichols for syntheses of controller, comparison is done for different st...

The paper presents the identification issues of the self-tuning nonlinear controller ASPECT (Advanced control algorithmS for ProgrammablE logiC conTrollers). The controller is implemented on a simple PLC platform with an extra mathematical coprocessor, but is intended for the advanced control of complex processes. The model of the controlled plant is obtained by means of experimental modelling....

Decentralized control has been popular very much because of its very good results in several tasks of control of multidimensional systems. Adaptation enlarges the area of the usage especially in the case that standard controllers with fixed parameters are unsatisfactory. Last year we have introduced a new approach based on a modified tuning method based on a combination of one-dimensional self-...