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Scramjet combustor states parameters dynamic characteristics study have great importance in scramjet accuracy thermodynamics regulations. In this investigation the dynamic response characteristics of kerosene-fueled scramjet combustor wall pressures are studied by time-frequency domain analysis method. Firstly, the dynamic response of scramjet combustor wall pressure is stimulated by step input of...
This paper aims to improve the inlet flow performance of the centrifugal pump with multi-diversion compound impeller structural, the ejector was used to decrease the secondary vortex flow characteristics and improve boosting capability of the centrifugal pump. This paper presents the numerical simulation study on multi-diversion compound impeller structural centrifugal pump by using CFD method under...
This paper aims to investigate problems of multivariable controller design for Aeroengine. A design method of model reference adaptive control system was established based on the theory of super stability. By ensuring the global stability and asymptotic stability of the system, the adaptive controller of aeroengine was carried out by using this method. The tracking performance, anti-interference ability...
A new adaptive compensation control method was developed to improve the control performance of multivariable system which affected by uncertainty. In this paper, a basic optimal LQR control law was compensated by the augmented model reference adaptive method under the framework of feedback control structure, to improve the dynamic and anti-interference performance of the system which affected by uncertainty...
The dramatic changes of dynamics characteristics of aeroengine, the aero dynamics effects together with the wide range of flight envelope, it is required that the controller can adapt to the large parameter variation range and has good robustness. To address the above problems, a new turbofan engine Multivariable robust gain scheduled LPV control algorithm based the closed-loop system regional pole...
The capture, utilization and storage (CCUS) of CO2 has become a hot topic in the current environmental protection field. What's more, CO2 gas sources contain various impurities, which may have a great influence on the physical properties of CO2. So understanding the physical and chemical properties of CO2 with impurities as well as the differences of between it and pure CO2, is the basis of carrying...
Background Neuroinflammation is a hallmark that leads to selective neuronal loss and/or dysfunction in neurodegenerative disorders. Microglia-derived lysosomal cathepsins are increasingly recognized as important inflammatory mediators to trigger signaling pathways that aggravate neuroinflammation. However, cathepsin H (Cat H), a cysteine protease, has been far less studied in neuroinflammation,...
We have done researches on Yb3+-doped materials. In this paper, we present a new type of scintillation materials that can observe the neutrons, neutrinos. Through the experiment, we got two flickering glass systems detecting neutron and neutrino. One is doped with Cerium, Lithium, and its highest peak lies in 312 nm. The other system is doped with gadolinium, Yb, and the highest peak is located in...
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