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为解决系统参数不确定导致的降阶控制器失效问题,分析了混入部分快模态的降阶控制器控制性能.以6阶滚转驾驶仪系统为例阐明了系统参数不确定导致的系统时间尺度特性的变化,随后仿真并分析了降阶控制器设计时所需选取的状态变量及降阶控制器最高阶数.利用该阶数对应的状态变量设计了包含全部潜在慢变状态的拓展降阶控制器并仿真验证了其控制性能.结果表明,拓展降阶控制器能够保证其控制性能不低于传统的降阶控制器并对参数不确定系统表现出良好的适应性.
In order to solve the problem of reduced-order controller failure caused by uncertain system parameters, the control performance of reduced-order controller with some fast modes is analyzed. Taking the sixth-order roll-driven pilot system as an example, the system time caused by uncertain system parameters Then, the state variables selected by the controller and the highest orders of the reduced-order controller are simulated and analyzed. By using the state variables corresponding to the order, Order controller and its control performance are verified by simulation.The results show that the extended controller can ensure its control performance not lower than the traditional reduced order controller and show a good adaptability to the uncertain parameter system.