|
|
|
|
|
Shilei Cao, Man Yang and Jian Liu
Due to its advantages of easy deployment and high stiffness-to-mass ratio, the utilization of truss structures for constructing large satellites presents an appealing solution for modern space missions, including Earth observation and astronomy. However,...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yumei Zhang, Jie Zhang, Ye Li, Dan Yao, Yue Zhao, Yi Ai, Weijun Pan and Jiang Li
Acoustic metamaterials (AMs) composed of periodic artificial structures have extraordinary sound wave manipulation capabilities compared with traditional acoustic materials, and they have attracted widespread research attention. The sound insulation perf...
ver más
|
|
|
|
|
|
|
|
|
|
|
Feng Tian, Mengjiao Wang and Xiaopei Liu
Aiming at solving the problems of local halo blurring, insufficient edge detail preservation, and serious noise in traditional image enhancement algorithms, an improved Retinex algorithm for low-light mine image enhancement is proposed. Firstly, in HSV c...
ver más
|
|
|
|
|
|
|
|
|
|
|
Qi Hong, Tianyi Zhou and Junde Qi
Polishing force is one of the key process parameters in the polishing process of blisk blades, and its control accuracy will affect the surface quality and processing accuracy of the workpiece. The contact mechanism between the polishing surface and flap...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xin Qi, Chunyang Sheng, Yongbao Guo, Tao Su and Haixia Wang
Aiming at the problem that online parameter identification, based on the Model Reference Adaptive System (MRAS), is easily affected by the high-frequency noise of the sensor, an improved MRAS, based on variable bandwidth linear Active Disturbance Rejecti...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mengting Zou, Jun Ma, Xin Xiong and Rong Li
To investigate the vibration properties in healthy and fault conditions of planetary gearboxes, a phenomenological model is constructed to present the vibration spectrum structure. First, the effects of the base deflection of the gear fillet and the flex...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jiawen Li, Yujia Wang, Haiyan Li, Xing Liu and Zhengyu Chen
Ocean currents, mechanical collisions and electronic damage can cause faults in an autonomous underwater vehicle (AUV), including sensors and thrusters. For such problems, this paper designs a fault-tolerant controller that is independent of the results ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ji Liang, Hongguang Jia, Mao-Sheng Chen, Ling-Bo Kong, Huiying Hu and Lihong Guo
In this study, a dynamic model of a solar array drive system that includes a pair of flexible solar arrays with a central rigid shaft and a permanent-magnet synchronous motor (PMSM) was developed, and a disturbance compensation sliding mode control (DCSM...
ver más
|
|
|
|
|
|
|
|
|
|
|
Sipho G. Thango, Georgios E. Stavroulakis and Georgios A. Drosopoulos
A numerical investigation of masonry walls subjected to blast loads is presented in this article. A non-linear finite element model is proposed to describe the structural response of the walls. A unilateral contact?friction law is used in the interfaces ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mirko Stanimirovic, Miomir Vasov, Marko Mancic, Boris Rancev and Milena Medenica
In the last few years, Stara planina (the Balkan Mountains) and its surroundings have been improving their tourist offer. The area is protected by law, as a nature park, and the construction of new buildings requires a complex administrative procedure. R...
ver más
|
|
|
|
|
|