The power converter is one of the core components of the Switched Reluctance Motor (SRM) speed control system, and it is also the weakest link of system reliability. Aimed at the problems of traditional power converter short-circuit fault diagnosis methods, such as additional hardware, large control...

Prediction of ground support process for transit flights is an important function of airport collaborative decision-making system. Aimed at the problems that the refined dynamic prediction of the process cannot be achieved at present and the accuracy is low, a method for dynamic prediction of the tr...

An image fusion algorithm combining low-rank representation decomposition and deep neural network is proposed to solve the problem of serious feature loss and non-prominent target in infrared and visible image fusion. First, Latent Low-Rank Representation Decomposition (DLatLRR) was performed on the...

Dynamic obstacle avoidance is an indispensable ability of omnidirectional mobile robots in complex working environments. The idea of water flow field is used to redefine the repulsive potential field function of artificial potential field and its direction, which solves the problems of traditional a...

The tiltrotor aircraft needs to take into account the power requirements of vertical takeoff and landing and high-speed level flight, and using large diameter rotor as the propulsion device will make most of the wing in the rotor slipstream area, which is different from the conventional propeller ai...

Compared with smooth airfoil, the aerodynamic characteristics of wavy airfoil exhibit some unique features. In order to further explore the aerodynamic characteristics of the wavy configuration, based on the previous wind tunnel tests, a group of wavy airfoils with different geometric shape modified...

When the traditional step sweeping attack angle data processing method is used for directly processing the test data of continuous sweeping attack angle test, the low-frequency vibration component cannot be removed. Based on the characteristics of approximate symmetry and local linearity in the test...

Two-phase thermal-controlled accumulator plays a vital role in mechanically pumped two-phase loop system. And the distribution state of liquid and vapor is one of the key factors that decide the temperature control performance of the accumulator. The distribution state of fluid in accumulator under ...

Considering the problems of uneven distribution of the number of ground users and serious co-channel interference of multi Unmanned Aerial Vehicle (UAV) cooperative services when multiple tethered UAV aerial base stations are used to provide air-ground two-way communication services to multiple comm...

Aimed at the deformation of hydrodynamic face seal under high speed, high pressure and high/low temperature conditions, a thermal-solid coupling model of typical structure of hydrodynamic face seal is established, and the support and constraints of rotating ring are considered. The face micro-deform...

In view of the complex control problem caused by variable mechanical characteristics in conversion maneuver of tilt rotor aircraft, the control synthesis architecture that combines linear quadratic optimal control based on Gain Scheduling (GS) and smooth switching control is proposed to realize glob...

Aimed at the requirements of the exterior CT inspection using neutron beam, an exterior CT reconstruction algorithm based on Weighted Directional Total Variation (WDTV) minimization is proposed. We first use the symmetry principle of parallel beam data to supplement the missing projection data that ...

In order to overcome the shortage of existing anti-chaff-jamming quantitative characterization methods for radio fuze, taking the fuse of anti-aircraft missiles as an example, a quantitative characterization method of anti-chaff-jamming ability of radio fuze based on initiation probability is propos...

The low-velocity impact behavior and residual tensile strength of composite laminates are experimentally studied in this paper. Firstly, the effects of impactor type and layup type on the impact responses of laminates are investigated by impact tests, and damage characteristics are evaluated by usin...

In-orbit self-inspection of Static Random Access Memory (SRAM) in spaceborne electronic equipment is used in the power-on initialization process. It is able to find the faulty unit of the memory before equipment starts to work. It provides a basis for evaluating the health status of electronic equip...

In order to solve the problem of accurate numerical simulation of trailing edge morphing motion of a camber morphing airfoil, a spatiotemporal surface fitting method based on two-dimensional polynomial is proposed, which could accurately simulate the space-time position of the morphing trailing edge...

Due to the low signal-to-noise ratio of echo in passive radar, the target angle is usually estimated after range-Doppler 2D correlation. In this case of single snapshot, the performance of the classical super resolution method is poor due to the non-positive nature of the covariance matrix. To solve...

In order to reduce the thermal effect on the lubrication performance of piston ring under high pressure and high shear rate, the friction pair lubrication performance is characterized by the shear velocity gradient, the wall shear stress and the oil film temperature rise. RNG k-ε turbulence model is...

The difference in degree of cure in the forming process of composite autoclave is one of the main characterization parameters of degree of cure uniformity of composite. Based on thethree-layer BP neural network, this paper established a rapid estimation model of maximum difference of curing degree a...

Maneuver movements library is an important basis for aircraft air combat simulation. Reliable and targeted maneuver movements library can improve the authenticity and application value of air combat simulation. In order to establish a targeted maneuver movements library, a technical approach of calc...

Aimed at the reentry guidance problem for hypersonic deformable vehicle, firstly, a shaping plan of hypersonic deformable vehicle using telescopic wings is proposed, and the aerodynamic model and dynamic model with elongation deformation are established. Secondly, with the elongation deformation bei...

Fishbone flexible wing is a excellent design of active morphing camber wing. Ithas low chordwise bending stiffness and high stiffness along the thickness direction of airfoil, and it has strong geometric nonlinearity and significant aeroelastic effect when undergoing active deformation with large de...