| N4SID辨识方法在航空发动机中的应用 |
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| 引用本文： | 马艳,李志舜,曾庆福.N4SID辨识方法在航空发动机中的应用[J].航空动力学报,2002,17(1):132-134. |
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| 作者姓名： | 马艳 李志舜 曾庆福 |
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| 作者单位： | 1. 西北工业大学,航海工程学院,陕西,西安,710072
2. 西北工业大学,数据处理中心,陕西,西安,710072 |
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| 摘 要： | 针对在现代航空发动机的自适应控制和故障监控领域建立系统动态模型的需要 ,本文研究了基于状态空间模型的数字子空间状态空间系统辨识 (N4SID)方法 ,并在某型双转子涡喷发动机非线性气动热力学模型的“小偏离”状态上进行了仿真实验 ,结论表明 :该方法可以较准确地辨识发动机“小偏离”状态时的系统模型
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| 关 键 词： | 航空发动机 辨识 子空间 状态空间 |
| 文章编号： | 1000-8055(2002)01-132-03 |
| 收稿时间： | 2000/12/11 0:00:00 |
| 修稿时间： | 2000年12月11 |
Application of N4SID in Aero-Engine |
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| MA Yan,LI Zhi-shun and ZENG Qing fu.Application of N4SID in Aero-Engine[J].Journal of Aerospace Power,2002,17(1):132-134. |
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| Authors: | MA Yan LI Zhi-shun and ZENG Qing fu |
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| Institution: | Northwestern Polytechnical University,Xi'an710072,China;Northwestern Polytechnical University,Xi'an710072,China |
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| Abstract: | It is important to establish system dynamic model for many fields,especially in the fields of adaptive control and failure monitor of advanced aero engine.Many identification methods were used for this problem,including AR,OE,and so on.Numerical algorithm for subspace state space system identification (N4SID) is proposed in recent years and applied to communications.It is based on state space model.N4SID is described in this paper.Though areo engine is a complex non linear system,at "little bias" state,the model is linear time invariable system.In this paper,N4SID is applied to identifying aero thermal model of a certain double spool turbojet aero engine at "little bias" state.Moreover,the result shows us that this algorithm is feasible. |
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| Keywords: | aeroengines identification subspace state space |
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