| 一种新的控制系统H∞/LTR设计方法 |
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| 引用本文： | 杨刚,孙健国. 一种新的控制系统H∞/LTR设计方法[J]. 航空学报, 2004, 25(2): 104-107 |
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| 作者姓名： | 杨刚 孙健国 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,江苏,南京,210016 |
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| 基金项目： | 航空科学基金(00C52030)，博士点科研基金(2000028701)资助项目 |
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| 摘 要： | 提出了目标回路传递函数恢复的一种新的控制系统H∞/LTR设计方法,通过引入对控制量的加权,不仅可以保持LQR回路的特性,而且可以使控制器具有较低的增益和较小的带宽。此方法克服了LQG/LTR方法增益过高和LQR无穷带宽而引起的控制器对噪声特别敏感的缺点,从而达到抑制噪声的目的。与此同时,通过合理选择权函数,方法在回路中引入了积分环节,消除了静差,但却避免了增广,从而降低了系统的阶数。最后的实例验证了方法的可行性。
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| 关 键 词： | 航空发动机 H∞/LTR LQR 噪声抑制 |
| 文章编号： | 1000-6893(2004)02-0104-04 |
| 修稿时间： | 2003-02-28 |
A New H∞/LTR Method for Control System Design |
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| YANG Gang,SUN Jian-guo. A New H∞/LTR Method for Control System Design[J]. Acta Aeronautica et Astronautica Sinica, 2004, 25(2): 104-107 |
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| Authors: | YANG Gang SUN Jian-guo |
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| Affiliation: | College of Energy &; Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | This paper proposes a new H∞/LTR method for control system design. By introducing appropriate weighting on the control signals, this method not only can achieve the target loop transfer function, but also can get a controller with relatively low gain and limited bandwidth. As a result, this controller rejects measuring noise effectively. On the contrary, the controller designed by LQG/LTR method inherently has very high gain and large bandwidth, and suffers greatly from measuring noise. This H∞/LTR method has another merit: by carefully including an integrator in the weighting function, zero steady state error requirement is met without system augmentation. Results from simulation evaluation of the proposed method attest to its feasibility. |
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| Keywords: | aeroengine H∞/LTR LQR noise rejection |
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