航空发动机全程滑态变结构控制研究

【作者】 赵庆荣；

【导师】 樊丁；

【作者基本信息】 西北工业大学 ， 航空宇航推进理论与工程， 2001， 硕士

【摘要】 本文将一种新的滑动模态变结构控制方法：全程滑态变结构控制(GlobalVriable Structure Control）（GVSC）方法引入航空发动机控制系统中。该控制方法能有效地缩短系统状态到达滑动模态的时间，克服了定常滑态变结构控制系统在能达阶段对扰动的敏感性。因此，鲁棒性要优于定常滑态变结构控制方法。 本文首先应用GVSC理论设计出了航空发动机全程滑态变结构调节器，通过仿真证明了该方法的优越性。而后重点设计和分析了航空发动机全程滑态变结构模型跟踪控制系统；规划出满足性能指标、理论要求并且完全解耦的参考模型；仿真结果表明，所设计的航空发动机全程滑态变结构模型跟踪器具有良好的跟踪性能，对外界干扰和参数摄动有很强的抑制能力。同时，本文对跟踪控制器的可调参数对系统控制效果的影响进行了研究。 为了使研究更具实际应用性，本文考虑了约束情况下系统的控制性能，给出了跟踪控制器的适用范围。结果表明，我们所设计的航空发动机模型跟踪控制系统在应用中具有可实现性。最后讨论了航空发动机全程滑态变结构跟踪控制系统在全飞行包线的适用性问题。更多还原

【Abstract】 In this paper, a new variable structure control method, that is, Global Variable Structure Control (GVSC), is introduced to aero engine control system. This method can efficiently shorten the time during which system initial states reach the sliding mode, overcome the sensitivity of Constant Variable Structure Control (CVSC) to noise and changing of model parameters in this period. Thus compared with CVSC, its robustness is much better.On the base of this new theory, aero engine GVSC regulator is designed. Simulation results show its advantages. Then, aero engine GVSC model following system is focally designed and analyzed, reference model designed for the system meets performance target, theory matched requirement, and achieves complete uncoupling. It is shown that the system has good following performance, and possesses strong ability of anti-noise and anti-changing to model parameters. In addition, the influence of regulating parameter to system control effect is further studied.In order to achieve engineering application, system performance under practical constraints is considered and suitable application scope of controller is given finally. research results show that aero engine GVSC model following system designed in this paper has certain feasibility in practice. At last, adaptability of the system in flight field is discussed.更多还原