This work aims to improve the low accuracy caused by interference information during real-time weld surface detection. Firstly, a dataset with 7580 pictures containing 8 types of defects was established. Secondly, an improved detection model named Yolo-MSAPF designed based on Yolo-v5 and verified self-established database. Finally, system built analyze performance in industrial environment. The design principle is eliminate but enhance necessary features each scale as much possible...

In this letter, we propose a novel Non-Line-of-Sight (NLOS) identification and error-mitigation method for dynamic object positioning ultra-wideband (UWB) ranging. By utilizing inverse estimation on known Anchor Points (APs) improved robust unscented Kalman filter (IRUKF), while fusing Gyroscope Accelerometer data, the proposed technology identifies compensates NLOS occlusions between tag APs, reducing errors. The approach has been verified through simulation experiment, with precision of...

Ultra-Wideband (UWB) technology is crucial for indoor localization systems due to its high accuracy and robustness in multipath environments. However, Non-Line-of-Sight (NLoS) conditions can cause UWB signal distortion, significantly reducing positioning accuracy. Thus, distinguishing between NLoS LoS scenarios mitigating errors enhancing system performance. This research proposes a novel 1D-ConvLSTM-Attention network (1D-CLANet) extracting temporal channel impulse response (CIR) features...

The modeling method of driver's longitudinal and lateral control behavior based on moving horizon theory is presented, the scheme which could mimic perception, decision execution proposed. Based differential flatness, planned steering wheel angle acceleration can follow expected path consider fuel economy are obtained from an optimization problem. To track acceleration, a combining feed forward feedback controls given, realized by vehicle inverse model PID controller, also switching logic...

Abstract With the development of technology, demand integrated energy is increasing in our country. However, corresponding consumption rate and utilization are too different. Therefore, an intelligent management control system has been proposed, which based on he Internet Things technology. This paper also gives structure main functional modules so that efficiency can be improved better.

The DC distribution system has advantages over AC systems on power losses, control complexity, compatibility to DGs (Distributed Sources) and so on. basic flow problem in is different from mathematical domain, bus types component models. To construct the foundation of analysis, this paper analyzes problems first, including types, equations, Jacobian matrix It pointed out that voltage regulation only needs enough capacity instead generator with excitation like system. Then, based property,...

Medium and low voltage DC distribution are promising selection for future electric power supply. The transient characteristics analysis during line faults is of great significance the design relay protection system setting device parameters. Two pivotal types converters, MMC-based DC/AC converter DAB-based bidirectional DC/DC converter, studied under condition pole to short fault in bipolar network. equivalent circuit these converters different stages then obtained current theoretically...

Under the dual carbon goal, regional integrated energy system of distribution side where distributed generation source is widely connected should be reasonably planned and configured to realize sharing storage, which would promote high consumption renewable improve stability system. In this paper, considering uncertainty output in region, a stochastic planning model storage capacity allocation first established based on Markov model. Secondly, that cooperation between regions trading reduce...

In recent years, with the wide application of UAV, scope photogrammetric 3D modeling based on UAV images has been expanded, and model contains real geographic scenes, which applied to a large number fields such as smart cities disaster monitoring. This paper takes campus ZAFU research area, carries out acquired Phantom 4 RTK by DJI company, also compares accuracy reconstruction vertical photogrammetry oblique photogrammetry, are close each other in terms plane but differ elevation accuracy....

Gradient algorithm is difficult to obtain explicit analytic function of the optimization model, at same time heuristic computationally intensive with low speed and less efficient in soil nailing optimization. To overcome these problems, a new method based on improved response surface (IRS) which constructed by uniform design (UD) non-parametric regression (NR), proposed. The adopted combination model IRS composing program. process explained optimized verify feasibility proposed method....

An improved algorithm based on bidirectional iterative for AC/DC systems is proposed in this paper against the deficiencies of unified and alternating method. With coordination variable, achieved by forward calculating AC system variable increment backward exchange DC increment, has better convergence higher efficiency easy to switch control mode. Power flow calculation program are made Matpower toolbox MATLAB environment. By modifying IEEE14 node test system, a including LCC-HVDC, VSC-HVDC...

AbstractAccording to the principle of regional centralization and overall decentralization, K-means algorithm based on elbow rule was adopted divide equipment artificial colored-sand production line into several clustering partitions. The results were optimized realize power balance between different Center gravity method determine location each control node. goal minimizing total weighted distance from its corresponding node achieved. Field have shown that hardware wiring cost has decreased...

Abstract Simulated annealing optimization technique was used to simulate geological models. After comparing one-point perturbation scheme with two-point swapping scheme, and the Metropolis algorithm greedy algorithm, an optimized combination of simulated schedule is presented. The two-dimensional correlation coefficient matrix introduced determine a unit configuration which can represent essential features model. proposed be reproduce characteristics model based on multipoint histogram...

This paper proposes a novel path planner (i.e., E-Planner) based on the visibility graph for car-like mobile robots operating in unknown environments. To improve efficiency of building graph, an obstacle contour optimization approach is designed to reduce redundant vertices and edges. Moreover, breadth-first search combined with prioritized exploration timer mechanism employed decrease waste space path-searching process. Additionally, pure tracking method dynamic sight distance proposed...