Networked and Cloud Control Systems - Modern Challenges in Control Engineering

Abstract

The paper describes development of some control techniques used in the feedback control systems. Modern control trends,with attention to networked control systems (NCS), and basic assumptions for introducing a new control concept – control in the cloudare described. Networked control systems techniques initiated the development of concept of Internet of Things and are fundamental incloud control systems design. Network induced delays that occur in NCSs, as a result of the presence of a communication network, andNCSs stability are considered, as well. Time delays and data dropouts influence on the NCS behavior and stability is analyzed, and somerelations for maximum allowable delay bound estimation are provided. It is shown, on example of DC motor control, that networkedsystem behaves in desired manner and remains stable if the delay is less then estimated maximum bound. When data dropouts occur,system delays become greater and lead to the system instability. Cloud control systems use some techniques of NCSs and cloudcomputing. These techniques are briefly presented and are necessary to complete control tasks in the cloud.

Cloud-based control system: a bibliometric analysis

“…In the last step, IC1, IC6, and IC7 criteria were applied to the 69 eligible records as a final check, and we excluded 14 records. Hence, 55 records were included in the bibliometric analysis, and the articles consist of the following references: [6], [13], [17], [18], [25]- [74]. We also did a refinement process in the RIS formatted file to include and update the author's name (AU), keywords (KW), and abstracts (AB) that are not correctly mentioned or incompletely written in the database due to the data are not refined as the ones of data in the WoS database.…”

“…Traditional control systems, such as the integrated control system (ICS), distributed control system (DCS), fieldbus control system (FCS), and networked control system (NCS), each have their own set of benefits and applications. However, they all share high construction, operation, and maintenance costs and the inflexibility of control algorithm replacement [6]- [8]. Throughout the automation revolution, these traditional control systems have been the critical ingredient of industrial control, where its primary function has been to command low-level regulatory feedback control loops.…”

“…Many works in the industrial control domain use NCS approaches for distributed closed-loop control systems [6], [7], and references therein. Moreover, it enabled the development of networked control systems via remote control for large internet applications.…”

Performance Evaluation of Networks Using Gain Scheduling PID Networked Control System for Nonlinear Systems

“…Research on NCS control systems has mainly focused on PID and optimized PID controllers [13][14][15][16][17][18][19]. For instance, [13] evaluated the performance of a nonlinear level control system using PID fuzzy supervision and PID gain scheduling.…”

Application of Internet of Things Hardware in Control Systems

“…The industrial control systems that first used the communication network were based on the use of control-oriented communication networking technologies and protocols (CAN, DeviceNet) [3]. Due to the rapid development and availability to everyone, the Internet is nowadays increasingly used as a communication network in control systems, which enables the design and construction of large-scale control systems at low cost, system reconfiguration in a flexible manner and easy maintenance [4]. Thus networked control systems find their application not only in industrial plants but also in smart homes, traffic, teleoperations, agriculture, but what is the most important is a fact that fundamental theoretical development in networked control systems has led to the development of today's ubiquitous concept of the Internet of Things [5].…”