Results 11 to 20 of about 10,269 (246)

Experimental study on the influence of flexible bearing clearance on natural frequency of harmonic reducer

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2022
Harmonic reducer is a transmission device with high transmission ratio and high accuracy, which is widely used in robotics and other instruments. Backlash reflects the positioning accuracy of harmonic drive, which is one of the key performances of ...
Yazhen WANG, Yipeng CHEN
doaj   +1 more source

A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon

Jixie chuandong, 2023
In order to improve the cavitation performance under high-speed for external gear pumps, a comprehensive compensation method with the small backlash, innovative annulus relief-groove and increasing inlet oil-pressure is proposed.
Li Yulong, Hou Xinyu, Zhang Lihua
doaj  

Results of research on backlash compensation in a power electric drive by low-power electronic device

Acta Polytechnica, 2022
This article considers the feasibility of restoring and maintaining the kinematic accuracy of the support-rotary device drives by introducing a backlash compensation device into the control system.
Semen L. Samsonovich, Boris K. Fedotov, Nikolay B. Rozhnin, Roman V. Goryunov   +3 more
doaj   +1 more source

Active Vibration Suppression of Uncertain Hose and Drogue Systems in the Presence of Actuator Nonlinearities

IEEE Access, 2020
This paper investigates vibration suppression of uncertain hose and drogue systems in the presence of actuator nonlinearities. Firstly, a previously presented model of the hose and drogue systems is extended to describe how the hose and drogue systems ...
Liang Chang, Takao Ito
doaj   +1 more source

Adaptive Parameter Identification Based Tracking Control of Servo Systems with Unknown Actuator Backlash Compensation

Actuators
This paper presents a robust tracking control strategy for servo systems with unknown backlash, employing adaptive parameter identification to address performance degradation caused by backlash nonlinearities.
Hailan Du, Liang Tao, Xiongfeng Deng, Binzi Xu   +3 more
doaj   +1 more source

Postscript: Feminist Legal Theory in the 21st Century

Laws, 2020
This editorial takes the form of a short postscript to a special issue of Laws published in 2019–20. It shows how feminist legal theory (FLT), a corollary of second wave feminism, was initially embraced by law schools but soon subjected to a backlash ...
Margaret Thornton
doaj   +1 more source

Dynamic Modeling and Stability Analysis for a Spur Gear System Considering Gear Backlash and Bearing Clearance

Machines, 2022
In practice, gear backlash and bearing clearance usually exist together in a gear system. They may induce complicated dynamic responses and degrade transmission performance.
Gang Tian, Zhihui Gao, Peng Liu, Yushu Bian   +3 more
doaj   +1 more source

Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants

Annals of Clinical and Translational Neurology, EarlyView.
Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants. ABSTRACT Objective Return of disease activity is expected when patients discontinue disease‐modifying therapy (DMT) for multiple sclerosis (MS). Some MS DMTs are associated with higher‐than‐expected disease activity (rebound) after discontinuation.
Ralf Gold, Krzysztof W. Selmaj, Regina Berkovich, Jeffrey A. Cohen, Giancarlo Comi, Eva K. Havrdová, James K. Sheffield, Hetal Desai, Chun‐Yen Cheng, Jon V. Riolo, Andrew Thorpe, Erik DeBoer, Bruce A. C. Cree   +12 more
wiley   +1 more source

Dynamic Characteristics of Spur Gear Pair with Dynamic Center Distance and Backlash

International Journal of Rotating Machinery, 2019
Effect of dynamic backlash and rotational speed is investigated on the six-degree-of-freedom model of the gear-bearing system with the time-varying meshing stiffness.
Jie Liu, She Liu, Weiqiang Zhao, Lei Zhang   +3 more
doaj   +1 more source

Variable gain switching exact differential observer‐based compensation control for servo system with backlash

IET Control Theory & Applications, 2021
This paper proposes a novel variable gain switching exact differential observer (SEDO) to deal with the state estimation of mechanical servo system with unknown backlash. In order to compensate unknown non‐linear backlash accurately, a switching backlash
Guofa Sun, Yaming Xu, Yan Wang, Gang Wang   +3 more
doaj   +1 more source