This paper describes a methodology used to test the vulnerability of controlalgorithms implemented in an industrial Programmable Logic controller (PLC) environment to cyber attacks. Three stages of testing are discus...
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This paper describes a methodology used to test the vulnerability of controlalgorithms implemented in an industrial Programmable Logic controller (PLC) environment to cyber attacks. Three stages of testing are discussed. First, we start with a simulation study conducted in MATLAB. Secondly, the calculations are implemented using a PLC simulator. These initial stages enable quick and efficient identification of the types of attacks to which the algorithms implemented in the PLC are susceptible. Finally, a set of practical tests on a physical laboratory process controlled by PLC is done. Various attack scenarios are considered, and the vulnerability of controlalgorithms is carefully evaluated. Based on the obtained results, we formulate practical suggestions for reducing the vulnerability of PLC-based industrial control systems.
Remotely operated vehicles are the main tools in exploring and exploiting subsea resources. The design, development and implementation of navigation controlalgorithms for deepwater work class Remotely Operated Vehicl...
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ISBN:
(纸本)9783642158094
Remotely operated vehicles are the main tools in exploring and exploiting subsea resources. The design, development and implementation of navigation controlalgorithms for deepwater work class Remotely Operated Vehicle ROSUB 6000 is described in detail in this paper. The objective of this paper is to present the mathematical formulation and dynamics of ROV along with simulation results towards perfect tuning of ROV motion controlalgorithms for all three angular motions heading, pitch and roll. In this paper, the derivation of algorithm and automaticcontrol of nonlinear systems using reverse dynamic task theory is stated. The basic essential input and output parameters of algorithm are also described. The paper presents simulation results, tank test results and results of some initial sea trials.
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