To improve the steady-state output performance of permanent magnet toroidal motor system with traditional predictive current control, the optimization three-vector-based model predictive current control (OTV-MPCC) strategy for toroidal motor was studied in this paper. A mathematical model of a toroi...

Improving the operation resilience of the terminal is the best way to reduce the loss of people and property in an accident, mitigate the damage, and restore its function as soon as possible. At present, there is a lack of theories and techniques for quantitatively analyzing the resilience of the te...

Bolt is an indispensable fastener in the transmission line, and a pin-missing bolt will inevitably cause major safety hazards. Since the bolt target is small, and the annotation is difficult, a weak supervision detection method for pin-missing bolts of transmission lines based on SAW-PCL was propose...

Indoor spatial layout estimation is currently one of the research hotspots in the computer vision field. It plays a crucial role in object detection, augmented reality, and robot navigation. This paper proposed an indoor spatial layout estimation method based on multi-task supervised learning to eff...

This paper proposes a method of estimating the parameters of a composite modulation fuze based on the frequency variation relationship and synchronization of the Duffing oscillator array. This is done by studying the characteristics of the Duffing oscillator output signal that is excited by the sign...

Compared with the strapdown inertial navigation system, the redundant rotating inertial navigation system (RRINS) improves its reliability and reduces the impact of constant error of inertial components on its navigation performance by rotating modulation technology. According to the requirement of ...

Most semantic segmentation algorithms based on convolutional neural networks have massive parameters and high computational complexity, which limit their applications in real-time processing scenarios. Therefore, this paper proposed a lightweight semantic segmentation algorithm based on a global-loc...

The problem that the shape of the extended target is hard to estimate and the newborn target's prior information is unknown in the clutter environment is solved in this paper by using the extended targets-cardinality balance multi-target and multi-Bernoulli (ET-CBMeMBer) filter. This parameterized m...

Composite piezoelectric materials are excellent carriers for learning piezoelectric theory, but simulation software for virtual experimental teaching of composite piezoelectric materials still needs to be developed. A software based on barium titanium oxide@polyvinylidene difluoride (BTO@PVDF) virtu...

The asynchronous drive motor of small-scale hot-rolling mills has the characteristics of high production efficiency and straightforward operation. However, due to its often harsh working environment with high temperature, high pressure, and dust, the performance requirements for the controller are h...

The rarefied slip effect has a significant impact on the aerodynamic characteristics of hypersonic vehicle. Based on HyFLOW software, velocity slip and temperature slip boundary conditions suitable for thermochemical nonequilibrium flows are constructed. Meanwhile, the rarefied slip flows over the u...

Air transport is an important pillar in the field of comprehensive transportation in China, and the research on its green operation is of great significance to sustainable development. To achieve green optimization and reduce carbon emissions, the trajectory of the aircraft in the terminal area was ...

In order to solve the optimization design problem of the aerodynamic layout of complex high-speed folding-wing vehicles under the constraints of internal loads and external launch devices, a parametric modeling method for folding-wing vehicles based on the combination of class shape transformation (...

A field balancing solution based on current response is proposed to optimize mass distribution and eliminate dynamic unbalanced vibration in the rotor tilt mechanism of a magnetically suspended control and sensing gyro (MSCSG). The working principle of the magnetic bearing-rotor system is first anal...

The flexible dynamic deformation of the wing restricts the improvement of transfer alignment accuracy for distributed position and orientation system（POS）. The fiber grating sensor can accurately measure the flexible baseline. However, the process of transforming the strain measured by the optical f...

In order to reduce the drift rate of the flexible gyro and improve the precision of the flexible gyro, EMD-ARIMA drift model was proposed based on empirical mode decomposition (EMD) and autoregressive integrated moving average (ARIMA) signal processing tools. The outfield removal operator is designe...

The Jupiter system exploration has important scientific significance and strategic value, and the Earth-to-Jupiter transfer is the key basis for Jupiter system exploration. The optimal design of Earth-to-Jupiter transfer trajectories is carried out using gravity-assist flight technology, and the mid...

With the development of hypersonic technology, turbine-based combined cycle (TBCC) engines have received much attention. Mode transition is one of the obstacles that restrict the application of TBCC engines. Therefore, it is necessary to study the control methods in this process. First, a model synt...

To address the challenges of intercepting a hypersonic glide target in near space with significant maneuverability but ambiguous maneuver intention, this paper proposes a cooperative interception strategy for the midcourse guidance phase of a gliding phase interceptor (GPI), based on online predicti...

Despite an absence of pertinent studies, the stabilization of drivers’ states following crucial incidents at varied automation degrees has a significant impact on traffic safety. In order to investigate the effects of automation levels on the stabilization time of drivers’ workload and driving perfo...

The shock-wave/turbulent-boundary-layer interaction (SWTBLI) phenomenon will result in complex flow structures. Direct numerical Simulation (DNS) studies of compressible corner flow under freestream mach number 3, 5, 11 conditions have been carried out to further explore supersonic/hypersonic SWTBLI...

Characteristics of damping structures are essential for pipeline vibration design. In traditional random vibration analysis, it is currently challenging to take nonlinear variables caused by damping structure into account. Based on the theory of time-frequency conversion, this paper proposes a time-...

Previous researches on wind-driven rain on buildings mainly focus on wind-driven rain distribution on the facades under different environmental conditions and building geometries, but few researchers have analyzed the cause of the distribution. Employing the finite panel method, the catch ratio dist...

The constraints of the 4D trajectory optimization problem under wind influence are complex, and the multi-objective 4D trajectory optimization model is difficult to solve. To this end, the modeling and solution of the multi-objective optimization problem of the vertical profile of the trajectory und...

In order to estimate the lateral force of a tire, this paper proposed a joint estimation algorithm of vertical force and lateral force of a heavy-duty tire based on internal circumferential strain analysis of the tire. A 16.00R20 heavy-duty tire was taken as the research object, and the finite eleme...

The energy of the solar airship comes from the solar cell array, and the amount of solar radiation received by the array determines the endurance of the airship. The rigid crystalline silicon cells and flexible thin-film cells used in the airship were modeled. By considering the size and shape of th...

In order to study the influence of the gap between splitter plate and side wall of a turbine-based combined cycle (TBCC) exhaust system on its performance, the numerical simulation method was used to analyze the influence of different gap lengths and widths on the performance parameters of the nozzl...

With the development of precision micro-positioning technology, the research on dynamic characteristics of flexible micro-positioning platforms is necessary. As an effective method to analyze the dynamics of multi-body systems, the transfer matrix method (TMM) has the advantages of convenient modeli...

In order to study the effects of initial temperature, initial relative humidity, fuel load, and relative saturation of dissolved water on dissolved water, condensed water, precipitated water, and free water, this paper established a water contaminant generation model based on the heat and mass trans...

The pulse Doppler fuze experiences sweep-jamming when the jamming signal overloads the receiver channel, causing the fuze to misfire or detonate prematurely. At present, pulse Doppler fuze can avoid false start due to jamming signal by waveform design and multi-dimensional feature recognition, but h...

As a complex thermal system, the energy consumption of aircraft ground air conditioning is affected by many factors, including various weather data and time characteristics. In order to improve the prediction accuracy of ground air conditioning energy consumption when the aircraft cabin is cooled by...