Results 41 to 50 of about 24,658,754 (145)

Multi-physic system simplification method applied to a helicopter flight axis active control [PDF]

, 2012
A helicopter flight axis control, which is a complex multi-physic system, is modelled using an energetic based graphical tool: the Energetic Macroscopic Representation.
GOMAND, Julien, Francois Malburet, Pierre-Jean Barre, BARRE, Pierre-Jean, MARTIN, Mikael, Mikael Martin, Julien Gomand, MALBURET, François   +7 more
core   +1 more source

Influence of Electrostatic Force Nonlinearity on the Sensitivity Performance of a Tapered Beam Micro-Gyroscope Based on Frequency Modulation

Micromachines, 2023
Electrostatic force nonlinearity is widely present in MEMS systems, which could impact the system sensitivity performance. The Frequency modulation (FM) method is proposed as an ideal solution to solve the problem of environmental fluctuation stability ...
Kunpeng Zhang, Jianwei Xie, Shuying Hao, Qichang Zhang, Jingjing Feng   +4 more
doaj   +1 more source

Dynamic formulation and inertia fast estimation of a 5-DOF hybrid robot

Scientific Reports
As the main driving mechanism of a hybrid robot, the parallel mechanism is a nonlinear time-varying system. The load inertia of its actuated joints changes with the configuration of the robot.
Qi Liu, Tingzheng Yan, Bin Li, Yue Ma
doaj   +1 more source

Dynamical Design and Gain Performance Analysis of a 3-DoF Micro-Gyro with an Anchored Leverage Mechanism

Micromachines, 2022
In this paper, we apply the leverage amplification principle to improve the gain of a three-degrees-of-freedom (3-DoF) micro-gyro. The gain of the micro-gyro can be improved by designing linear and nonlinear micro-gyros with an anchored lever mechanism ...
Kunpeng Zhang, Sai Wang, Shuying Hao, Qichang Zhang, Jingjing Feng   +4 more
doaj   +1 more source

Numerical study of interstitial fluid flow behavior in osteons under dynamic loading

BMC Musculoskeletal Disorders
Background The porous structure in bone tissue is essential for maintaining the physiological functions and overall health of intraosseous cells. The lacunar-canalicular net (LCN), a microscopic porous structure within osteons, facilitates the transport ...
Tianyu Liu, Baochuan Xiong, Xin Cui, Chunqiu Zhang   +3 more
doaj   +1 more source

Algorithm Research Based on an Elliptical Arc Fitting Curve

IEEE Access
The fitting efficiency of lines or arcs fitting methods for various structural designs cannot meet the design requirements, and the fitting accuracy also needs to be improved. Therefore, this paper proposes a novel algorithm that uses a smaller number of
Qingjian Liu, Pei Li, Gangpeng Huang, Xu Zhang, Shuo Liu, Ziyi Yang, Tianze Hao   +6 more
doaj   +1 more source

Effects of Precipitates Evolution on Low Stress Creep Properties in P92 Heat-resistant Steel

Scientific Reports, 2018
The evolution of precipitates in P92 heat-resistant steel sustained under thermal aging at 923 K for different times were analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), while the effects of precipitates ...
Hongguang Han, Junjie Shen, Jiaxing Xie
doaj   +1 more source

Control of Wafer Scanners: Methods and Developments

, 2020
In this tutorial paper, control design aspects of wafer scanners used in the semiconductor industry will be highlighted. At the same time, challenges for control design development as to meet the ever increasing demands on accuracy and speed are ...
Ahlawat, R., J. Simonelli, Butler, Hans, Simonelli, J., van der Meulen, S.H., K. O'Brien, Dirkx, N.J., Teng, K-T., Zhao, Y., R. Ahlawat, H. Butler, S.H. van der Meulen, Y. Zhao, N.J. Dirkx, Heertjes, Marcel F., K-T. Teng, O'Brien, K., M.F. Heertjes   +17 more
core   +1 more source

ANALYSIS OF INFORMATION FACTORS FOR DESIGNING INTELLECTUAL MECHATRONIC SYSTEM

Наука и техника, 2016
The paper proposes to evaluate achievement of main results in operation of intellectual mechatronic systems with digital control by the obtained information effect.
A. V. Gulai, V. M. Zaytsev
doaj   +1 more source

Critical Parameters and Influence on Dynamic Behaviours of Nonlinear Electrostatic Force in a Micromechanical Vibrating Gyroscope

Shock and Vibration, 2020
The electrostatic force nonlinearity caused by fringe effects of the microscale comb will affect the dynamic performance of the micromechanical vibrating gyroscopes (MVGs).
Shuying Hao, Yulun Zhu, Yuhao Song, Qichang Zhang, Jingjing Feng, Kunpeng Zhang   +5 more
doaj   +1 more source