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2013 Vol. 39, No. 1

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INS error modification method based on pseudo line-of-sights intersection for cruise missile
Zhang Youan, Kou Kunhu, Liu Aili, Geng Baoliang
2013, (1): 1-5.
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In absence of other navigation systems, cruise missile inertial navigation system (INS) error cumulates continuously with time. To solve this problem, a novel INS error modification method was proposed based on continuous observation to single known feature target without the need of distance inform...
Optical properties of sun synchronous orbit satellite
Shen Wentao, Zhu Dingqiang, Shi Liangchen, Cai Guobiao
2013, (1): 6-10.
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Optical characteristics of sun synchronous orbit satellite FY-1 were studied by simulation and experimental verification in visible and infrared band. Taken as input in calculation of infrared emission, temperature field on satellite surfaces were solved according to the radiation flux of outer sour...
Nonlinear finite element modeling and simulation for landing leg of lunar lander
Liang Dongping, Chai Hongyou, Zeng Fuming
2013, (1): 11-15.
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In order to accurately predict the load attenuation and energy absorption capabilities of landing leg during the landing event for supporting the design and optimization of landing gear mechanism, a new approach of using nonlinear finite element method in landing impact dynamic analysis was proposed...
Sampled-data control for a class of nonlinear time-delay systems
Fan Liying, Wu Junfeng
2013, (1): 16-21.
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The problem of sampled-data control was investigated for a class of nonlinear time-delay perturbed systems, where the upper bound of sampling intervals was known and both constant sampling and variable sampling were considered. The objective is to design a state-feedback sampled-data controller, whi...
Rectifying drifts of symplectic algorithm
Liu Xiaomei, Zhou Gang, Wang Yonghong, Sun Weirong
2013, (1): 22-26.
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Symplectic algorithm preserves the symplectic structure and laws for Hamiltonian systems compared with Runge-Kutta(RK) methods, but the point-wise numerical precision is worse for elliptic Hamiltonian systems. In order to improve it, the average statistic drift formulae of the third-order symplectic...
Effect of pre-corrosion on the MSD occurrence probability
Zhang Jianyu, Yuan Jun, Shi Xinhong
2013, (1): 27-30,41.
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Aimed at the multiple side damage(MSD) existed in the typical aircraft structural components,the occurrence probability of multiple side damage was investigated. The condition of pre-corrosion was dipping in 3.5% NaCl solution for 240 hours. The influence coefficient C was obtained based on the pre-...
Nozzle chemical non-equilibrium effects based on strut combustor
Cheng Cheng, Qin Lizi, Liu Yu
2013, (1): 31-36.
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The finite volume method in implicit scheme and surrogate fuel C12H23's 10 species and 13 step reactions Arrhenius finite-rate model were adopted to investigate the non-equilibrium chemical reaction flow in kerosene-fueled scramjet single expansion ramp nozzle (SERN), and the ‘inlet thin layer' prob...
Comparison of flow rate calculation method for ultrasonic flow measurement
Yu Yang, Zong Guanghua, Ding Fenglin
2013, (1): 37-41.
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Ultrasonic flow meter (UFM) calculates the flow rate, by measuring the difference of ultrasound transit time between the upstream direction and downstream direction. For the purpose of accurate flow measurement, transit time difference method and frequency difference method were compared from three ...
Degradation prediction based on correlation analysis and assembled neural network
Dang Xiangjun, Jiang Tongmin
2013, (1): 42-46,51.
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Efficient prognosis for remaining useful life of product is critical for both accelerated degradation testing and prognostics and health management, which are two hot points in recent years. A novel degradation prediction model was proposed to improve the long prediction capability for complex degra...
System level link budget method
Liu Yan, Su Donglin, Zhang Kai, Li Yaoyao
2013, (1): 47-51.
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A simple mathematics iteration method was used to calculation of communication link margin between the ground station and aircraft in the past. However, factors such as complex vehicle model and climate conditions can cause radiation pattern distortion in the actual application. A method to assess t...
High-precision control for inertia momentum wheel based disturbance observer
Zhang Cong, Liu Gang, Li Guangjun
2013, (1): 52-56.
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To improve the output torque accuracy, a novel disturbance rejection strategy was presented with disturbance observer, based on the internal disturbance torque of inertia momentum wheel. By establishing the dynamic model of inertia momentum wheel, the existing torque control system was analyzed. The...
Development of Chang’E-1 operational simulator
Zheng Aiwu, Zhou Jianping, Ma Yongping
2013, (1): 57-61.
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Operational simulator is a satellite simulation system used to validate the flight program and ground control schemes, to train mission operators, constructing a realistic mission environment for system testing in the flight control center. The functional design, structure and using mode of Chang'E-...
Fault diagnosis of EHA-VPVM based on improved HHT
Liu Jun, Wang Zhanlin, Fu Yongling, Han Xu
2013, (1): 62-66.
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The system composition of the electro-hydrostatic actuator with variable pump displacement and variable motor speed(EHA-VPVM) was introduced. According to early fault signal features of EHA-VPVM, a new time-frequency analysis method Hilbert-Huang transform(HHT) was used. Two improved methods were in...
Image scrambling algorithm based on chaotic weighted sampling theory and sorting transformation
Cao Guanghui, Hu Kai
2013, (1): 67-72.
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In order to enhance the security of digital image transmitted by network, Ye's algorithm, a typical image permutation algorithm based on sorting transformation was studied. Chaotic interval sampling sequence was introduced into image permutation algorithm. By doing so, image permutation effect was i...
Quality evaluation method for aircraft large components joining based on position and orientation measurement uncertainty
Du Fuzhou, Wu Pu
2013, (1): 73-77.
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In order to support the development and application of digital measurement assisted joining of large size aircraft components based on position and orientation, related work focus on measurement uncertainty of position and orientation, and quality evaluation methodology based on uncertainty was done...
Improvement of finite difference time domain method and its application to calculation of ultrasonic sound fields
Xu Na, Li Yang, Zhou Zhenggan, Yu Guang
2013, (1): 78-82.
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Finite difference time domain (FDTD) method is an effective way to establish ultrasonic testing model. However, a big difference between acoustic impedances of two adjacent materials may cause instability of the difference computation in the interface of two materials. To solve this problem, based o...
Differential barometric altimetry method based on mobile phone base stations
Du Xiaohui, Pei Jun, Zhang Lirong, Liu Cheng
2013, (1): 83-88.
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A differential barometric altimetry was proposed for differential measurement to solve poor elevation positioning accuracy in existing satellite navigation and positioning systems by using the existing mobile phone base station as reference. The barometric measurement data from the densely distribut...
Compressive behavior of composite cylinder shell with cover
Fan Zhou, Cheng Xiaoquan, Li Zhonghai, Hu Renwei
2013, (1): 89-94.
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The compressive behavior of one-third composite cylindrical shell with cover was studied. The composite cylinder shell with cover which was tested under compressive load failed in local buckling at 118.944 kN without post-buckling. The finite element model was built in ABAQUS to calculate buckling b...
Hot diaphragm forming of carbon fiber composite with C-shaped structure
Yao Shuang, Li Min, Gu Yizhuo, Ma Xiaoxing
2013, (1): 95-99,104.
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The device of hot diaphragm forming was designed. The preforms of carbon fiber composite with C-shape structure were fabricated. The variations of temperatures on the preforms and the mould were measured. Furthermore, the influences of the forming temperature and the size of perform on the processin...
Preparation of borate-based metal compounds and their electrocatalytic activities
Liu Yanjun, Jin Tao, Xiang Min, Diao Peng
2013, (1): 100-104.
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Borate-based metal compounds thin film such as cobalt-borate(CoBi), nickel-borate(NiBi), manganese-borate(MnBi), rhodium-borate(RhBi) and palladium-borate(PdBi) were prepared on the surface of indium tin oxide(ITO) through electrochemical method at room temperature in alkaline medium. These compound...
Flow visualization of supersonic optical dome with jet
Zhu Yangzhu, Yi Shihe, Tian Lifeng, Chen Zhi
2013, (1): 105-108.
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In the Mach 3.8 wind tunnel, fine structures in the flow field of optical dome with or without jet were studied by nano-tracer based planar laser scattering(NPLS), which has high spatiotemporal resolution. Lots of complex structures in the flow field were clearly visible, such as shock wave, expansi...
Multi-source knowledge fusion algorithm
Zhou Fang, Wang Pengbo, Han Liyan
2013, (1): 109-114.
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Multiple source knowledge fusion can effectively enhance the reliability and credibility of the ruling result. In the light of information fusion, methods and general model of knowledge fusion were analyzed, with emphasis on knowledge fusion algorithms based on Bayes rule, Dempster-Shafer(D-S) proof...
Application of ADRC technology in electrohydraulic force servo system
Guo Dong, Fu Yongling, Lu Ning, Long Manlin
2013, (1): 115-119.
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To meet the performance requirements of electrohydraulic force servo system for the upset process of billet flash butt welding of the ending welding rolling, composite control strategy based on active disturbance rejection control (ADRC) technology and force synchronization errors feedback correctio...
Dynamic modeling of combined reaction wheel and vibration isolation platform system
Huang Tingxuan, Zhang Yao, Xu Shijie
2013, (1): 120-125.
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To analyze the attenuation effect of vibration isolation platform for reaction wheel (RW) disturbances, the dynamic modeling problem of the combined system which includes an imbalance RW and a passive Stewart platform with kinetic base platform was studied. The precise dynamics formulation was deriv...
Robust matching design optimization for wing aerodynamic characteristic of aircraft family
Meng Wengong, Ma Dongli
2013, (1): 126-131.
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The wing component is served as a common module and sharing in every model of modern aircraft family. Due to the different mission of every model, the aerodynamic requirement of wing in the aircraft family is different. The design-ratio was inducted and the matching design optimization concept for t...
Spinning missile dynamic inversion controller robustness analysis using Lyapunov methods
Liu Fang, Chen Wanchun
2013, (1): 132-137.
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A two time-scale separation based nonlinear dynamic inversion controller was designed for the spinning missile. A state-space formulation of the control system with the aerodynamic coefficient uncertainties was presented. The nonlinear controller robustness was analyzed using Lyapunov methods. Assoc...
Control strategy for electro-mechanical braking based on curves of ECE regulations and ideal braking force
Liu Lijun, Ji Fenzhu, Yang Shichun, Xu Bin
2013, (1): 138-142.
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The braking system of electric vehicle with regenerative braking is different from friction braking system of conventional fuel vehicle. Regenerative braking system makes braking stability of electric vehicles change when it recovers braking energy of vehicles. The improvement of braking energy reco...

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