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摘要: 对一具体例子, 从保持期望的控制性能(如渐近稳定性)、减小控制量的角度, 通过引入一新的重标度变换, 采用一有效的降阶观测器, 选取巧妙的Lyapunov函数和恰当的设计参数, 设计了一个改进的输出反馈控制器, 保证了闭环系统的全局渐近稳定性. 同时, 从理论分析和仿真算例, 较之相关论文的设计, 本文得到了小的增益参数和重标度变换参数的临界值, 从而有效地减小控制量和控制器的变化率.Abstract: This paper designs an improved output-feedback controller from the viewpoint of reducing the control effort at the premise of maintaining the desired control performance for a concrete example. The output-feedback controller guarantees the globally asymptotical stability of the closed-loop system by introducing a new rescaling transformation, adopting an effective reduced-order observer, and choosing ingenious Lyapunov function and appropriate design parameters. Simultaneously, from both the theoretical analysis and a concrete example, smaller critical values for gain parameter and rescaling transformation parameter are obtained to effectively reduce the control effort and the rate of change of controller than the design of the related papers.
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