To tackle the significant nonlinearity and uncertainty in the high-altitude cell exhaust environment simulation system,a hybrid controller combining model predictive control(MPC)and extended state observer(ESO)was proposed.First,the modeling of the critical equipments and transient environment changing processes for the high-altitude cell exhaust environment simulation system were built.The ESO was then adopted to estimate the real-time system disturbances,and meanwhile,the MPC was integrated to manage the degree of opening for the pressure control valve.Finally,a simulation platform for the high-altitude cell exhaust environment simulation system was constructed based on the system modeling results.Simulation experiments were conducted to validate the performance of the proposed MPC-ESO controller,and a comparative analysis was carried out against the linear active disturbance rejection control(LADRC)method.The results demonstrate that in the thrust transient test control simulation,the maximum instantaneous fluctuation of the controlled pressure is reduced from 2.59％to 0.78％and from 1.48％to 0.56％respectively in the climbing condition of equal Mach number and the position condition of fast-moving throttle rod.These results indicate that the proposed MPC-ESO controller can provide excellent tracking performance,quick response,robust disturbance rejection,and swift regulation speed,making it highly valuable for practical engineering applications.
关键词
高空舱/排气环境模拟/压力控制/模型预测控制/扩张状态观测器
Key words
high altitude cell/exhaust environment simulation/pressure control/model predictive control/extended state observer
维普
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