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In order to improve the speed-regulation performance of the permanent-magnet synchronous motor (PMSM) system under uncertainties and disturbances, an equivalent disturbance observer (EDO) based discrete-time integral sliding mode control (DISMC) scheme is proposed. To avoid the high-frequency noise caused by the differential terms of conventional sliding mode control (SMC), a discrete-time integral...
The path-following control problem is considered for a 3 degree-of-freedom underactuated surface vessel with disturbances. The Serret-Frenet coordinate and nonlinear state transformations are used to transform the system into a SISO nonlinear chained system. By using the disturbance observer to compensate the influence of external dynamic disturbance, a composite generalized predictive anti-disturbance...
In this paper, we present a time delay synchronization controller for the Chua's chaotic circuits. The proposed synchronization strategy is very simple because it only impose piecewise linear feedback control on the first solution component. The global asymptotical synchronization criterion is established based on the stability theory of linear systems. Numerical simulations are given to support the...
The Cauchy problems of Laplace's equation are ill-posed with severe instability. In this paper, numerical solutions are solicited by the method of fundamental solutions (MFS) and the method of particular solutions (MPS). We focus on the analysis of the MFS, and derive the bounds of errors and condition numbers. The analysis for the MPS can also be obtained similarly. Numerical experiments and comparisons...
The problem of static output feedback fuzzy control for a class of nonlinear fuzzy impulsive time-delay systems is investigated by employing Lyapunov functions. A new scheme of robust fuzzy control via linear matrix inequality (LMI) technique is proposed. The so-called parallel distributed compensation (PDC) idea is employed to design the static output feedback controller. Sufficient conditions for...
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