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	Probability Quantification of GSI and D in Hoek-Brown Criterion Using Bayesian Inversion and Ultrasonic Test in Rock Mass 期刊论文 OAI收割 ROCK MECHANICS AND ROCK ENGINEERING, 2023, 卷号: -, 期号: -, 页码: - 作者: Liu, Jian; Jiang, Quan; Dias, Daniel; Tao, Chen \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2023/08/02 Bayesian method Ultrasonic testing Hoek-Brown failure criterion Rock mass mechanical parameter Disturbance factor
	Estimating the geological strength index and disturbance factor in the Hoek-Brown criterion using the acoustic wave velocity in the rock mass 期刊论文 OAI收割 ENGINEERING GEOLOGY, 2022, 卷号: 306 作者: Xia, Kaizong; Chen, Congxin; Wang, Tianlong; Zheng, Yun; Wang, Yue \| 收藏 \| 浏览/下载：11/0 \| 提交时间：2023/08/02 Hoek-Brown failure criterion Rock mass mechanical parameter Acoustic wave velocity Disturbance factor Geological strength index
	Quantification of the GSI and D values in the Hoek-Brown criterion using the rock quality designation (RQD) and discontinuity surface condition rating (SCR) 期刊论文 OAI收割 BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2022, 卷号: 81, 期号: 1, 页码: 21 作者: Xia, Kaizong; Chen, Congxin; Wang, Tianlong \| 收藏 \| 浏览/下载：136/0 \| 提交时间：2022/02/17 Hoek-Brown criterion Rock mass mechanical parameters Rock quality designation Surface condition rating Disturbance factor Geological strength index
	A New Mechanical Resonance Suppression Method for Large Optical Telescope by Using Nonlinear Active Disturbance Rejection Control 期刊论文 OAI收割 IEEE Access, 2019, 卷号: 7, 页码: 94400-94414 作者: Li, Xin; Zhou, Wenlin; Luo, Jun; Qian, Junzhang; Ma, Wenli \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2021/05/06 Mechanical resonance suppression active disturbance rejection control (ADRC) acceleration feedback control (AFC) nonlinear tracking differentiator (NTD) optical telescope
	Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China 作者: Sun Z. 收藏 \| 浏览/下载：85/0 \| 提交时间：2013/03/25 Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system which is composed of the drift adjusting mechanical frame the ultrasonic motor the driver of Ultrasonic Motor the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system was introduced the source of the disturbance and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space simple configuration high position control precision fine repeatability self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.
	Contact-impact analys with clearance hinge in flexible multi-body system (EI CONFERENCE) 会议论文 OAI收割 2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China Ge M.; Jia H.; Liu B. 收藏 \| 浏览/下载：52/0 \| 提交时间：2013/03/25 Hinge in mechanical systems exist small clearance and contact deformation After consideration of flexible components cause the system to the wear and tear impact force reduced at the clearance noise contact time increased vibration contact-impact areas expand and clearance also caused disturbance of the rod angular velocity of the linkage. 2011 IEEE. reliability reduce or even failure[1]. Therefore the hinge clearance and the impact of flexible components in kinetic models should be considered. In this paper a nonlinear spring-damper hinge clearance model is considered to establish mechanical system structure of dynamic equations[46] through a four-bar linkage hinge with multi-clearance rotation of ADAMS dynamic simulation for dynamics simulation study. Simulation results show that hinge clearance and link flexible in Four-link mechanism dynamics have a great impact on performance: connection with the clearance lead to pin holes to produce a series of collisions and a larger initial impact force
	Experimental investigation of a new device in suppressing vortex-induced vibrations of a circular cylinder 会议论文 OAI收割 21st International Offshore and Polar Engineering Conference, ISOPE-2011, Maui, HI, United states, JUN 19-24, 2011 作者: Lin LM(林黎明); Zhong XF(钟兴福); Wu YX(吴应湘); Lin LM(林黎明) 收藏 \| 浏览/下载：41/0 \| 提交时间：2013/02/26 Circular cylinders Experiments Instrument scales Marine risers Vibrations (mechanical) Vortex flow Vortex shedding Passive control Riser Suppression Vortex induced vibration Wavy disturbance
	Nonlinear control design for system with mechanical resonance based on two tracking-differentiators (EI CONFERENCE) 会议论文 OAI收割 2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010, August 4, 2010 - August 7, 2010, Xi'an, China 作者: Li J.; Li Y.; Li Y.; Li Y.; Li Y. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 A nonlinear control strategy for controlling a motion system with mechanical resonance is presented in this paper. A mathematical model of the servo system is derived according to the parameters of an actual system. By using two Tracking-Differentiators reference input and system output are tracked and their differential signals are given simultaneously. A nonlinear PD control law in velocity loop is designed based on non-smooth feedback. The simulation results show that the control law is superior remarkably in performance to linear PD control law and the classical PID control law. Tracking-Differentiator resolves the contradiction between rapidity and overshoot of system response. The nonlinear PD control law improves system dynamic performance and intensifies the ability of disturbance rejection. The control design achieved in this paper makes the servo system more robust. 2010 IEEE.
	Bending Nanowire Growth in Solution by Mechanical Disturbance 期刊论文 OAI收割 Nano Letters, 2010, 卷号: 10, 期号: 6, 页码: 2121-2125 作者: Wang C; Wei YJ(魏宇杰); Jiang HY; Sun SH; Wang C(王超) 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/06 Gold nanowires solution synthesis bending nanowire growth mechanical disturbance nanocrystal defect reverse micelle