Results 1 to 10 of about 120,010 (352)

Experimental Study on the Mechanical Properties and Acoustic Emission Characteristics of Deep Soft Rocks under Low-Frequency Dynamic Disturbance [PDF]

Applied Sciences, 2023
The strong dynamic disturbance in deep mines seriously affects the safe and efficient mining of deep resources. In this study, we used the creep disturbance impact loading system and acoustic emission system to conduct experiments on soft siltstone ...
Ling Dong, Dong Wang, Xiaoming Sun, Yujing Jiang, Hengjie Luan, Guangchao Zhang, Guanglei Zhou, Bin Liang   +7 more
doaj   +2 more sources

Experimental and constitutive model study on the mechanical properties of a structural plane of a rock mass under dynamic disturbance [PDF]

Scientific Reports, 2022
An accurate description of the mechanical properties and deformation characteristics of a structural plane of a rock mass with a large chamber or slope under the ultimate stress with periodic stress disturbances is of great significance to ensure the ...
Yongjiang Yu, Yuntao Yang, Jingjing Liu, Pengbo Wang, Shipeng Zhang, Zhenmeng Wang, Shangqing Zhao   +6 more
doaj   +2 more sources

Rock damage and fracturing induced by high static stress and slightly dynamic disturbance with acoustic emission and digital image correlation techniques

Journal of Rock Mechanics and Geotechnical Engineering, 2021
A series of coupled static-dynamic loading tests is carried out in this study to understand the effect of slightly dynamic disturbance on the rocks under high static stress.
Shuting Miao, Peng-Zhi Pan, Petr Konicek, Peiyang Yu, Kunlun Liu   +4 more
doaj   +3 more sources

Adaptive Anti-Disturbance Control for Systems With Saturating Input via Dynamic Neural Network Disturbance Modeling

IEEE Transactions on Cybernetics, 2022
This article discusses the issue of disturbance rejection and anti-windup control for a class of complex systems with both saturating actuators and diverse types of disturbances.
Yang Yi, Wei Xing Zheng
exaly   +2 more sources

Mechanical response of structural rock slope under cyclic dynamic disturbance

Meikuang Anquan
In order to study the stability of slopes containing weakly inter bedded rocks under dynamic disturbance, the dynamic response characteristics of rocks with different inclinations under dynamic cyclic disturbance are investigated through indoor ...
Zhouai ZHANG, Yongjiang YU, Yongjun WANG
doaj   +2 more sources

Study on Dynamic Characteristics of Deep Siltstone under High Static Stress and Frequent Dynamic Disturbance

Advances in Civil Engineering, 2019
The mechanical characteristics of siltstone under high static load and frequent dynamic disturbance were investigated by the improved split Hopkinson pressure bar (SHPB), which is used to simulate the failure phenomenon of the extracted ore drift owing ...
Lu-ping Cheng, Chun Wang, Li-zhong Tang, Cheng Wang, Zhu-qiang Xiong, Shi-ming Wei, Yuan Chen, Tao Liu, Yong-heng Wei   +8 more
doaj   +2 more sources

Research on anti-disturbance performance for servo system with a high dynamic performance velocity acquisition method

Journal of Algorithms & Computational Technology, 2018
In order to achieve the requirements of high anti-disturbance and robustness performance for servo system, the acceleration control with disturbance observer is adopted in this paper, where the disturbance observer is used to estimate and compensate the ...
Ji Hua, Wang Shuang
doaj   +2 more sources

Disturbance observer based dynamic load torque compensator for assistive exoskeletons

, 2018
In assistive robotics applications, the human limb is attached intimately to the robotic exoskeleton. The coupled dynamics of the human-exoskeleton system are highly nonlinear and uncertain, and effectively appear as uncertain load-torques at the joint ...
Isaksson, Magnus,, Masud, Nauman,, Smith, Christian, Isaksson, Magnus, Masud, Nauman, Smith, Christian,   +5 more
core   +2 more sources

Numerical Modeling on Blasting Stress Wave in Interbedding Rheological Rockmass for the Stability of the Main Shaft of Mine

Frontiers in Earth Science, 2022
High rheological property and strong mining disturbance are prominent conditions in deep rock projects, and often present a coupled process to induce rockbursts, collapse and land subsidence.
Shuai Li, Chao Zheng, Yong Zhao
doaj   +1 more source

Dynamic Disturbance Analysis of Whiskbroom Area Array Imaging of Aerospace Optical Camera

IEEE Access, 2021
The whiskbroom scanning imaging mode effectively expands the imaging field of the space optical camera, and realizes high-resolution and wide-width spatial imaging.
Shaoen Wang, Xiubin Yang, Rupeng Feng, Suining Gao, Jinliang Han   +4 more
doaj   +1 more source