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This paper is concerned with the problem of resilient control strategy for cyber-physical system(CPS) under denial-of-service(DoS) attacks. The combined design between cyber layer and physical layer of CPS is proposed. On the one hand, the cyber mixed strategy is designed by using the physical performance H∞ index; on the other hand, the controller of physical system is designed by optimal cyber mixed...
In general, high-order D-type iterative learning control (ILC) law should be taken for the controlled system with high order relative degree to ensure the convergence, but the high order differential operation is seriously influenced by measurement noise. This paper proposes a first order D-type ILC law combined with the previous best control input for the system with high order relative degree. The...
This paper presents a framework for cyber attack impact analysis of a smart grid. We focus on the model synthesis stage in which both cyber and physical grid entity relationships are modeled as directed graphs. Each node of the graph has associated state information that is governed by dynamical system equations that model the physics of the interaction (for electrical grid components) or functionality...
Based on research of the phase plane division control method, according to the structure of wheel loader steer by wire system and its work condition, the fuzzy five states control system specially designed for wheel loader steer by wire system is introduced in this paper. To verify its performance, the controller was simulated in MATLAB/SIMULINK based on the model of wheel loader steer by wire system...
Based on research on the algorithm and control strategies of automatic transmission in wheel loader, the electronic control system adopted embedded technology for model A306 transmission is introduced in this paper. The embedded chip ATmega128 with RISC is used as CPU in the design. The hardware of the intelligent control system is satisfied with the requirements of gear shift. With the modular structure,...
The stabilized soil is an important material used widely in road construction. The mixture ratio is an important factor impact on its quality directly, even influences the quality of highway construction. The electronic belt scale is used to weight and control the material flow by adjusting the motor speed of belt conveyor to control the mixture ratio of the stabilized soil. In this paper, the fuzzy...
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