时滞系统的变结构控制及其在火箭发动机燃烧过程镇定中的应用
Variable Structure Control of Time-Lag Systems and its Application to the Stabilization of Combustion in Rocket Motors
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摘要: 火箭发动机燃烧室中燃烧过程的动力学模型是一不稳定时滞系统,用传统的线性状态反 馈方法来镇定它,所得到的闭环系统对燃烧时滞及压力指数的鲁棒性很差.本文采用文[1]中 提出的变结构控制方法来镇定该燃烧过程,所形成的闭环系统显著地改善了系统对燃烧时滞 及压力指数的鲁棒性.Abstract: The dynamical model of combustion in liquid propellant rocket motors is an unstable time-delay system. When it is stabilized by a linear state feedback controller, the robustness of the closed loop system is not satisfactory. In this paper, the variable structure control approach presented in [1] is used to stabilize the combustion and the robustness of the system against the variation of time lag 3 and pressure exponent γ is considerably improved.
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Key words:
- Rocket motors /
- stabilization /
- variable structure control
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