Abstract Control oriented modeling and analysis of centrifugal compressor working characteristic at variable altitude
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Control oriented modeling and analysis of centrifugal compressor working characteristic at variable altitude

机译：面向控制的离心压缩机在不同高度下的工作特性建模与分析

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AbstractThe centrifugal compressor converting the kinetic energy into the pressure increase has been extensively used for industry applications. Due to its high rotational speed, the volume and weight could be greatly reduced which makes it suitable for in-flight gas compression systems. Combining the high altitude circumstances such as the air density, pressure, temperature, etc., an centrifugal compressor model is first developed in this paper. This model takes the changing properties of the atmosphere, air pressure and air density into account. The working characteristics of the centrifugal compressor at different altitudes are studied. Meanwhile, the effects of the parameter variations on the compressor performance is analyzed. Moreover, dynamics of the air flow and pressure are investigated with varied altitude. A closed loop controller based on super twisting sliding mode approach is proposed to make the mass flow track the reference.
机译： 摘要 将动能转化为压力增加的离心压缩机已广泛用于工业应用。由于其高转速，可以大大减少体积和重量，这使其适用于飞行中的气体压缩系统。结合空气密度，压力，温度等高海拔环境，本文首先建立了离心压缩机模型。该模型考虑了大气，气压和空气密度的变化特性。研究了不同高度下离心压缩机的工作特性。同时，分析了参数变化对压缩机性能的影响。此外，研究了在不同高度下气流和压力的变化。提出了一种基于超扭曲滑模方法的闭环控制器，以使质量流跟踪参考。

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