AVB is considered to meet the demands of audio video transmission in future avionics system, which is a real-time multimedia network and has become a candidate for in-vehicle embedded systems. Comparative study on AFDX and AVB is implemented. First, standards of AVB and AFDX are compared. Second, th...

In order to solve the problem of distribution method of jamming resource when several jamming systems jam several radar systems, a distribution method of jamming resource based on intuitionistic fuzzy sets (IFS) and improved particle swarm optimization (IPSO) algorithm was proposed. With the paramet...

An algorithm is proposed for the direct kinematics analysis of a spatial general 3-RPS parallel mechanism based on conformal geometric algebra (CGA). The angle between the axis of an arbitrary kinematic chain and the plane of the fixed platform can be regarded as the unknown variable. The mathematic...

Based on hydrodynamic equilibrium equations of aircraft tire-water film-wet pavement interaction during the aircraft landing on the wet pavement, main influence factors of hydrodynamic pressures in tire-water film interaction were obtained. They are water film thickness, aircraft's taxiing speed and...

Considering the centralized control mode cannot be used in hierarchical networked control system which is widely applied in the fields of modern industry, aerospace, etc., the distributed H_∞ control for the hierarchical networked control system is studied. First, considering the network induced dela...

High resolution shock capturing schemes are of great significance for numerical simulation of flow fields containing shock waves. WENO-Z3N1, WENO-Z3N2 and WENO-Z3N3 schemes were constructed through different global smoothness indicators based on the third-order WENO-Z scheme (WENO-Z3 scheme). Severa...

This paper focuses on the circuit modeling method of through silicon via (TSV) and power distribution network (PDN) in 3D integrated circuits (3D ICs). Combined with the PDN on printed circuit board (PCB) and the chip PDN model, an electromagnetic susceptibility (EMS) modeling and collaborative anal...

Failure caused by fatigue damage is one of the most common failure modes of engineering structures. By using irreversible thermodynamics and microscopic damage mechanics, a new model of brittle fatigue damage based on brittle damage mechanism was proposed. A strict and detailed derivation of the new...

Aimed at whether the steady-state availability model of METRIC model can be directly applied to the unsteady-state time-varying availability model, by extending the METRIC theory, a time-varying availability model based on the expected order of spare parts and a time-varying availability model based...

An autonomous on-line learning control strategy based on adaptive modeling mechanism was proposed aimed at system modeling and parameter identification problems resulting from dynamic model uncertainties in modern airship control. An adaptive method to establish airship control Markov decision proce...

In view of hybrid uncertainty propagation with parameters dependency of variables in quantified risk assessment, a two-level hybrid uncertainty presentation and propagation framework considering parameters total dependency, partial dependency and independency was proposed, in which inner and outer p...

The throughput performance degrades under high traffic loads when massive bursty users have access to the satellite. To solve this problem, a random multi-user access method with unequal protection was proposed. Several copies of a packet were created and sent during different time slots according t...

This paper addresses real-time and robust object tracking method. In this paper, dense circulation sampling and frequency domain transform method were used in target tracking processing. This paper proposed energy minimization object tracking method in frequency domain space and put forward the conc...

Wavelength division multiplexing (WDM) network is featured by almost unlimited bandwidth potential, great flexibility, strong expandability and transparent to protocol and bit rate, which makes it a good choice for avionics systems. However, the end-to-end delay of message transmitted on WDM avionic...

Multi-parameter change and interaction of internal flow, pressure and temperature lead to a complex relationship between heating resistor power and superfluid Josephson frequency when the superfluid quantum interference gyro is driven by heat. In order to obtain sustained and stable Josephson freque...

The aerodynamic characteristics of counter rotating fan was effected by rotating speed ratio of first and second stages, appropriate speed ratio could improve aerodynamic characteristics of counter rotating fan. The influence of rotating speed variation of first and second stages on the aerodynamic ...

US military standard AR-40A is a frequently used design principle when the automatic carrier landing system (ACLS) is designed. But the principle is mainly aiming at Class Ⅳ, such as F/A-18 and there is no instruction about whether the principle could be adapted in the Class Ⅰ aircraft. In order to ...

To measure and evaluate the astronauts' workload of on-orbit maintenance, based on timeline analysis and multi-resource theory, the subjective and objective comprehensive evaluation of the workload was carried out by using two dimensions of "indirect acquisition value of the resource demand occupanc...

Aimed at ballistic missile, a strapdown inertial navigation system/celestial navigation system/radar altimeter (SINS/CNS/RA) integrated method was proposed. Since the velocity and position errors' divergent problem of SINS can not be fundamentally solved by conventional SINS/star tracker integrated ...

It is confirmed that the dimensionless time for evolution of velocity gradient tensor (VGT) is local Kolmogorov time scale in homogeneous isotropic turbulence. The channel flow at Reynolds number 7 000 was calculated using large-eddy simulation in this paper. The flow field was divided into differen...

Aimed at the problem that it is difficult to evaluate radar detection performance when detecting stealth aircraft under the condition of self-defense jamming, a self-defense jamming model of stealth aircraft based on spiral flying was proposed. After aircraft susceptivity analysis, trajectory parame...

The climb gradient of the aircraft reflects its ability of flying over the ground barrier to a safe altitude. To ensure safety of civil aircraft when going around, airworthiness regulations provide that the go-around climb gradient should meet certain numerical requirements. According to provisions ...

Quaternion and Euler angle are used to describe coordinate transformation. Euler angle is characterized by three-time rotation and three parameters, and there are 12 kinds of rotation order. The characteristics of the quaternion are described by one rotation and four parameters. Using Euler angle is...

YAl_2p/Mg-14Li-3Al composites with different volume fraction were fabricated by stir casting, and then the as-cast ingots were extruded as composite thin-walled tubes with the defined experimental parameters. Effects of hot extrusion deformation on microstructure and mechanical properties of YAl_2p/Mg...

In visual tracking, the efficient and robust feature representation plays an important role in tracking performance in complicated environment. Therefore, a deep sparse neural network model which can extract more intrinsic and abstract features was proposed. Meanwhile, the complex and time-consuming...

In order to meet the demands of the variable cycle engine (VCE) performance seeking control (PSC), a new PSC method based on the sequential quadratically constrained quadratic programming (SQCQP) algorithm was proposed. The sub-problem of the quadratically constrained quadratic programming (QCQP) wa...

This paper abstracted the scheduling of assembly process as a resource-constrained project scheduling problem in the background of aircraft moving assembly line, and decisions about material delivery and the storage of line-side material were introduced considering the capabilities, constraints and ...