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The large-scale intermittent wind has been incorporated into current grid. in order to achieve transient angle stability quantitative analysis and evaluation, this paper proposes a fast assessment method of wind power generators and coal-fire power generators in transient angle stability control. Using the EEAC (extended equal area criterion) angle stability quantification theory, the defense vectors...
The traditional methods for mitigating chatter instability are called passive control which focuses on optimizing working spindle speeds and depths of cut. But they have inherent disadvantages in gaining highly efficient machining in milling processes. By contrast, the research in this paper is along the line of active control. Specifically, an adaptive algorithm is developed based on Fourier series...
This paper investigates the robust exponential stability for discrete-time Cohen-Grossberg neural networks with both time-varying and distributed delays. By constructing a novel Lyapunov-Krasovskii functional and introducing some free-weighting matrices, two delay-dependent sufficient conditions are obtained by using convex combination. These criteria are presented in terms of LMIs and their feasibility...
Robust control for uncertain nonlinear systems based on T-S fuzzy model is discussed in this paper. Firstly, a T-S fuzzy system is adopted to model the uncertain nonlinear systems. Then, for the system with input variables adopting standard fuzzy partitions, a new sufficient condition to check the stability of T-S fuzzy system with uncertainty is derived, which is expressed in terms of linear matrix...
Stability conditions of T-S fuzzy system based on a common positive definite matrix or a set of positive definite matrices have been proposed in lots of literature. This paper proposes an approach to relax the conservatism of those stability conditions. By using the concept of the efficient maximal overlapped-rules group (EMORG), a relaxed sufficient condition is derived to guarantee quadratic stability...
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