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Reliable Control of Nonlinear Systems via Variable Structure Scheme

机译:变结构方案对非线性系统的可靠控制

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摘要

This study proposes a class of variable structure stabilizing laws which make the closed-loop system be capable of tolerating the abnormal operation of actuators within a pre-specified subset of actuators. The ranges of acceptable change in control gain magnitude that preserves system's stability are estimated for the whole set of actuators. These ranges are shown to be able to be made larger than those obtained by linear quadratic regulator (LQR) reliable design (Veillette, 1995, and Liang , 2000) by the choice of control parameters. Besides, this approach doesnot need the solution of Hamilton-Jacobi (HJ) equation or inequality, which is essential for optimal approaches such as LQR and $H^infty$ reliable designs. As a matter of fact, this approach can also relax the computational burden for solving the HJ equation or inequality.
机译:这项研究提出了一类可变结构稳定定律,该定律使闭环系统能够容忍执行器的预先指定子集中的执行器的异常操作。对于整个执行器集合,估计了保持系统稳定性的控制增益幅度的可接受变化范围。通过选择控制参数,这些范围已显示出比通过线性二次调节器(LQR)可靠设计(Veillette,1995; Liang,2000)获得的范围更大。此外,该方法不需要求解汉密尔顿-雅各比(HJ)方程或不等式,这对于诸如LQR和$ H ^ infty $等可靠设计的最优方法至关重要。实际上,这种方法还可以减轻解决HJ方程或不等式的计算负担。

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