【摘要】 时延以及数据包丢失是导致网络控制系统性能降低的重要原因。利用既是时钟驱动又是事件驱动的传感器,可以使时延与采样周期具有相同的长度,这样降低了建模随机时延的保守性。通过把具有时变采样周期的网络控制系统建模为切换系统,并利用线性矩阵不等式,本文给出了保证系统渐进稳定的充分条件,同时设计了系统的H∞控制器,仿真结果表明了本文所提出的变采样周期方法的有效性。更多还原

【Abstract】 Delay and data packet dropout might be potential sources to instability and poor performance of NCSs. Using a both clockdriven and event-driven sensor, the time delay can be integrated into sampling period, then the conservatism induced by modeling stochastic delay is eliminated. By modeling the networked control systems with varying sampling period as switched systems, linear matrix inequality (LMI) based sufficient conditions for the asymptotic stability of NCSs are presented, and H∞ controller design is presented in terms of the solutions of a set of linear matrix inequalities (LMIs). The simulation results illustrate the effectiveness of the proposed varying sampling period method.更多还原