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您的检索式：作者名="Shuqian Sun"
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| 1 | Nonlinear dynamic behavior of a flexible asymmetric aero-engine rotor system in maneuvering flight显示文摘Aero-engine rotor systems installed in aircraft are considered to have a base motion.In this paper,a flexible asymmetric rotor system is modeled considering the nonlinear supports of ball bearings and Squeeze Film Dampers(SFDs),and the dynamic characteristics of the rotor system under maneuvering flight are systematically studied.Effects of the translational accelerative motions,the angular motions and the pitching flight with combined translational and angular motions on nonlinear dynamic behavior of the rotor system are investigated.The results show that,due to the nonlinear coupled effects among the rotor,ball bearings and SFDs,within the first bending resonance region,responses of the rotor show obvious nonlinear characteristics such as bistable phenomenon,amplitude jumping phenomenon and non-synchronous vibration.Translational acceleration motion of the aircraft leads to axis offset of the rotor system and thus results in the reduction and the final disappearance of the bistable rotating speed region.The pitching angular motion mainly affects rotational vibration of the rotor system,and thus further induces their transverse vibrations.For the pitching flight with combined translational and angular motions,a critical flight parameter is found to correspond to the conversion of two steady responses of the rotor system,in which one response displays small amplitude and synchronous vibration,and the other shows large amplitude and non-synchronous vibration. | Tian GAO Shuqian CAO Yongtao SUN | 2020 | Chinese Journal of Aeronautics2020，33，10： | 5 |
| 2 | Reconfigurable single-shot incoherent optical signal processing system for chirped microwave signal compression显示文摘We propose and demonstrate a reconfigurable and single-shot incoherent optical signal processing system for chirped microwave signal compression, using a programmable optical filter and a multiwavelength laser(MWL). The system is implemented by temporally modulating a specially shaped MWL followed by a suitable linear dispersive medium. A microwave dispersion value up to 1.33 ns/GHz over several GHz bandwidth is achieved based on this approach. Here we demonstrate a singleshot compression for different linearly chirped microwave signals over several GHz bandwidth. In addition, the robustness of the proposed system when input RF signals are largely distorted is also discussed. | Ming Li Shuqian Sun Antonio Malacarne Sophie LaRochelle Jianping Yao Ninghua Zhu Jose Azana | 2017 | Science Bulletin2017，62，4： | 3 |
| 3 | Analysis of genetic diversity in Ganoderma population with a novel molecular marker SRAP显示文摘 | Sun Shujing Gao Wei Lin Shuqian | 2006 | Appl Microbiol Biotechnol2006，72，： | 1 |
| 4 | All-optical temporal fractional order differentiator using an in-fiber ellipsoidal air-microcavity显示文摘An all-optical temporal fractional order differentiator with ultrabroad bandwidth(~1.6 THz) and extremely simple fabrication is proposed and experimentally demonstrated based on an in-fiber ellipsoidal air-microcavity.The ellipsoidal air-microcavity is fabricated by splicing a single mode fiber(SMF) and a photonic crystal fiber(PCF) together using a simple arc-discharging technology. By changing the arc-discharging times, the propagation loss can be adjusted and then the differentiation order is tuned. A nearly Gaussian-like optical pulse with 3 dB bandwidth of 8 nm is launched into the differentiator and a 0.65 order differentiation of the input pulse is achieved with a processing error of 2.55%. | Lihong Zhang Shuqian Sun Ming Li Ninghua Zhu | 2017 | Journal of Semiconductors2017，38，12： | 0 |
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