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The problem of robust gain-scheduling multi-objective was studied. Multi-channels was adopted to design robust gain-scheduling multi-objective controller for LPV systems with polytopic structure, the slack variables whose number can adjust was added for decoupling the systems matrix and Lyapunov functions, so the different Lyapunov functions can selected at different vertex. This method can reduce...
For the conventional sliding mode control of a class of nonlinear uncertain systems, the ranges of sliding mode error and steady-state error are deduced. In order to reduce the steady-state error while anti-windup, an improved integral sliding surface is designed, and an improved integral fuzzy sliding mode control approach is proposed based on this sliding surface. In this approach, the integral...
Encryption technology is an important measure to ensure the security of digital image, this paper's main purpose is to research how to encrypt images by chaos. Based on analyzing traditional Logistic chaotic image encryption method, this paper proposed an improved encryption algorithm. The new algorithm produced nine chaotic sequences only by one secret-key, six sequences were used to scramble the...
Logistic map is a simple non-linear model, but it has complex dynamics. The chaotic sequence produced by logistic map is extremely sensitive to the change of its initial value. This paper analyzes traditional Logistic chaotic image encryption method, and proposes an improved encryption algorithm. The algorithm produces nine chaotic sequences, six are used to scramble the position of image pixels in...
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