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| 航空发动机ZP/LTR方法稳定性分析及改进 | |
| 引用本文： | 杨刚,姚华. 航空发动机ZP/LTR方法稳定性分析及改进[J]. 航空动力学报, 2007, 22(6): 909-914 |
| 作者姓名： | 杨刚 姚华 |
| 作者单位： | 中国航空动力控制系统研究所,无锡214063;中国航空动力控制系统研究所,无锡214063 |
| 摘 要： | 分析了零点配置/回路传函恢复(ZP/LTR)方法稳定性, 给出并证明了其稳定性条件.但该条件较为苛刻, 限制了ZP/LTR方法的应用.为了对ZP/LTR方法改进, 在设计过程中引入了Kal man滤波器, 通过选取特殊的参数, 使Kal man滤波器回路逼近并取代原目标回路, 从而在保留ZP/LTR方法性能的同时, 通过保证Kal man滤波器回路的稳定性保证了最后闭环系统的稳定性.给出并证明了改进后的ZP/LTR方法的稳定性条件, 指出改进后的ZP/LTR方法的稳定性条件较为宽松, 拓宽了原ZP/LTR方法的应用范围. |
| 关 键 词： | 航空、航天推进系统 航空发动机控制 零点配置/回路传函恢复(ZP/LTR) 线性二次型高斯/回路传函恢复(LQG/LTR) Kalman滤波器 稳定性 |
| 文章编号： | 1000-8055(2007)06-0909-06 |
| 收稿时间： | 2006-06-17 |
| 修稿时间： | 2006-06-17 |
Stability analysis and improvement of ZP/LTR method of aeroengine |
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| YANG Gang and YAO Hua. Stability analysis and improvement of ZP/LTR method of aeroengine[J]. Journal of Aerospace Power, 2007, 22(6): 909-914 | |
| Authors: | YANG Gang and YAO Hua |
| Affiliation: | Aviation Motor Control System Institute, Wuxi 214063, China |
| Abstract: | Zero placement/loop transfer recovery(ZP/LTR) method was analyzed theoretically to find and demonstrate the conditions of stability.However,these strict conditions have placed constraint on the application of ZP/LTR method.Kalman filter was thus introduced for the purpose of improvement of ZP/LTR method.With some special parameters selected,Kalman filter loop could approximate and replace original target feedback loop(TFL).While the performance of ZP/LTR method is maintained,the stability of final closed-loop system could be guaranteed along with the stability of Kalman filter loop.The stability conditions of improved ZP/LTR method was presented and demonstrated,showing that the stability conditions of improved ZP/LTR method were less strict,thus expanding the scope of applications for original ZP/LTR method. |
| Keywords: | aerospace propulsion system aeroengine control zero placement/loop transfer recovery(ZP/LTR) linear quadratic Gaussian with loop transfer recovery(LQG/LTR) Kalman filter stability |
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