Analysis of Communication Channel Attacks on Control Systems—SCADA in Power Sector

2018 ◽  
pp. 115-131 ◽  
Author(s):  
Rajesh Kalluri ◽  
Lagineni Mahendra ◽  
R. K. Senthil Kumar ◽  
G. L. Ganga Prasad ◽  
B. S. Bindhumadhava
Keyword(s):  
Control Systems ◽  
Communication Channel ◽  
Power Sector

Stabilization of Networked Control Systems with Uncertain Parameters

2012 ◽  
Vol 433-440 ◽  
pp. 7060-7066
Author(s):  
Fang Jin
Keyword(s):  
Control Systems ◽  
Uncertain Systems ◽  
Communication Channel ◽  
Networked Control Systems ◽  
Linear Matrix ◽  
Uncertain Parameters ◽  
Matrix Inequalities ◽  
Continuous Time Systems ◽  
Necessary And Sufficient ◽  
Time Systems

This paper addresses the problem of stabilizing linear continuous-time systems with uncertain parameters, where sensors, controllers and plants are connected by a digital communication channel. A necessary and sufficient condition for stabilization of linear uncertain systems is derived. The method to be proposed here relies on linear matrix inequalities. Simulation results show the validity of the proposed scheme.

Stabilization for Quantized Feedback Control Systems: An LMI Approach

2011 ◽  
Vol 383-390 ◽  
pp. 2161-2167
Author(s):  
Jin Fang
Keyword(s):  
Feedback Control ◽  
Control Systems ◽  
Communication Channel ◽  
Feedback Stabilization ◽  
Control Problems ◽  
Quantization Scheme ◽  
Lmi Approach ◽  
Quantized Feedback ◽  
Feedback Control Systems ◽  
Proof Techniques

This paper addresses the feedback stabilization problem for quantized feedback control systems, where sensors and controllers are connected by a digital communication channel. A dynamic, logarithmic quantization scheme is proposed. It is shown that quantized feedback control problems can be converted to robust control problems. The proof techniques rely on the LMI approach. Simulation results show the validity of the proposed quantization policy.

scholarly journals A Switched Approach to Robust Stabilization of Multiple Coupled Networked Control Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Mei Yu ◽  
Nan Ding ◽  
Wen Tan ◽  
Junyan Yu
Keyword(s):  
Control Systems ◽  
State Feedback ◽  
Communication Channel ◽  
Networked Control Systems ◽  
Robust Stabilization ◽  
Linear Matrix ◽  
Parameter Uncertainties ◽  
Feedback Controllers ◽  
Limited Communication ◽  
Controlled Systems

This paper proposes a switched approach to robust stabilization of a collection of coupled networked controlled systems (NCSs) with node devices acting over a limited communication channel. We suppose that the state information of every subsystem is split into different packets and only one packet of the subsystem can be transmitted at a time. Multiple NCSs with norm-bounded parameter uncertainties and multiple transmissions are modeled as a periodic switched system in this paper. State feedback controllers can be constructed in terms of linear matrix inequalities. A numerical example is given to show that a collection of uncertain NCSs with the problem of limited communication can be effectively stabilized via the designed controller.

A Single-Bit Binary Estimator for Use in Control Systems Featuring Serial Communication Channels

2016 ◽  
Author(s):  
Josiah R. Thomas ◽  
George T. C. Chiu
Keyword(s):  
Control Systems ◽  
Communication Channel ◽  
Digital Communication ◽  
Serial Communication ◽  
Communication Channels ◽  
Control Signal ◽  
Binary Representation

This paper presents an algorithm that estimates a measured output, which has been converted to a binary representation in order to transmit the information via a digital communication channel. The purpose of the estimator is to mitigate the effect of the delay due to transmitting the information across the communication channel. The algorithm uses each bit of the output sample to estimate the output sample value as it is being transmitted, and updates the control signal based on this estimate. Some basic analysis of this algorithm is presented along with simulations and a discussion on situations in which it could be beneficial.

Shannon’s Theory and Feedback Systems

1960 ◽  
Vol 82 (1) ◽  
pp. 46-50
Author(s):  
S. S. L. Chang
Keyword(s):  
Information Theory ◽  
Feedback Control ◽  
Control Systems ◽  
Communication Channel ◽  
Transfer Functions ◽  
The Other ◽  
Feedback Systems ◽  
Threshold Levels ◽  
System Components ◽  
Feedback Control Systems

Feedback can be used as a means of realizing Shannon-predicted errorless capacity of a noisy communication channel. On the other hand, Shannon’s information theory can be used as a guide for rating feedback control systems as well as selecting system components. A brief summary of the former aspect and the results from some preliminary investigations of the latter aspect are presented. Included topics are calculations of required information capacities of control systems from input characteristics and fidelity requirements, required information capacities of system components, and calculation of information capacities of system components from saturation limits, threshold levels, and transfer functions.

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