Reconfigurable controller design for missile using eigenstructure assignments
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摘要: 针对简化后的导弹姿态控制系统,运用特征结构配置法,提出了一种改进的控制系统的重构方法.根据输出反馈特征值配置原理,给出了原闭环系统特征结构的确定方法,并对可重构控制器的代价函数的确定方法进行了改进.这种算法通过输出反馈可以确保闭环系统的稳定性,同时可以解决故障前后系统阶数不一致的问题.仿真结果表明,该方法能够在保证故障后闭环系统稳定的基础上使系统性能得到最大可能的恢复.Abstract: An improved reconfigurable method for spacecraft attitude control system was designed by the eigenstructure assignments. For a kind of linear system, not only the closed-loop eigenstructure was recovered but also the cost function of the reconfigurable controller was improved based on the output feedback eigenstructure assignments. The method guaranteed the stability of the reconfigured closed-loop system in the presence of output feedback which is capable of dealing with order-change problems that may occur in an after-fault system, and the performance of original system was recovered to a maximum extent. Simulation results were provided to show the effectiveness of the proposed method.
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Key words:
- missile /
- attitude control system /
- eigenstructure assignments /
- reconfiguration
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