Results 71 to 80 of about 471,275 (103)

The ADRC strategy research of electro-hydraulic servo pump control system based on dynamic load torque compensation for high-performance force control

International Journal of Electrical Power & Energy Systems
The force control performance of electro-hydraulic servo pump control system (EHSPCS) is constrained by the nonlinear disturbance, volume servo response delay, hydraulic parameter uncertainty, nonlinear excitation disturbance, etc.
Guishan Yan, Tiangui Zhang, Xianhang Liu, Chong Yao, Chao Ai   +4 more
doaj   +1 more source

Mariner 4 and 5 disturbance torques and limit cycles [PDF]

, 1968
Disturbance torque effects on cruise mode operations of Mariner 4 and Mariner
Prelewicz, D. A.
core  

PMSM Servo System Control Based on Disturbance Observer

, 2010
In order to realize high speed control of some ac servo system, aimed at all kinds of uncertain factors such as greatly changing moment and torque, and strong impact torque. Therefore, for gaining good speed tracking characteristics, adaptive disturbance
Jin Yu Zhou, Zhi Gang Li, Hua Wei Chai, Wei Ping Zhang   +3 more
core   +1 more source

Discrete-Time Load Disturbance Torque Estimation for a DC Drive System [PDF]

, 2012
A DC motor is one of the most useful types of electrical motors and can be found in a variety of applications. However, it is well-known that there may exist a disturbance torque that acts on the motor shaft.
Qian, Huijie
core   +1 more source

Robust Speed Tracking of Networked PMSM Servo Systems with Uncertain Feedback Delay and Load Torque Disturbance

Journal of Applied Mathematics, 2012
This paper considers a class of networked Permanent Magnet Synchronous Motors (PMSMs), whose feedback loops are closed over a shared data network. Although the installation and maintenance cost of the networked PMSM system can be lowered by replacing the
Qiang Ling, Jing Li, Haojiang Deng
doaj   +1 more source

Research on active disturbance rejection control strategy of electric power steering system under extreme working conditions

Measurement + Control
In response to the influence of motor interference, damping, friction, and other uncertain factors on the operation of electric power steering systems under extreme working conditions, this study proposes a control strategy for electric power steering ...
Zhu’An Zheng, JinCheng Wei
doaj   +1 more source

Convergence rate sliding mode control of permanent magnet synchronous motor based on expanded sliding mode observer

Journal of Engineering and Applied Science
The aim is to address the limitations of conventional sliding mode control for PMSM, namely the problems of sliding mode oscillation, load disturbance, and poor control accuracy. An improved sliding mode control strategy for PMSM is proposed based on the
Li Tian, Qingrui Wei, Qiang Zheng, Hailong Li   +3 more
doaj   +1 more source

Design and analysis of active disturbance rejection and field weakening control system for PMSM based on FCS-MPC

机车电传动
The field weakening control system for permanent magnet synchronous motors (PMSM) is commonly used in the field of electric vehicles (EV). PMSMs need to deliver high torque output to meet the demands of rapid starting, acceleration, and climbing for EVs ...
YU Yuting, HUANG Jie, CHU Yanting, ZHOU Fangyuan   +3 more
doaj  

Magnetic Substance Disturbance Torque Caused by Shape Magnetic Anisotropy and its Applications in Small-Sized Satellites [PDF]

, 2016
This study presents the magnetic substance disturbance torque caused by shape magnetic anisotropy. This magnetic substance disturbance occurs in on-board unsymmetrical magnetic substances, even if the magnetic substance does not have a residual magnetic ...
Sako, Nobutada, Funase, Ryu, Nakasuka, Shinichi, Inamori, Takaya   +3 more
core   +1 more source

Disturbance torque rejection properties of the NASA/JPL 70-meter antenna axis servos [PDF]

, 1989
Analytic methods for evaluating pointing errors caused by external disturbance torques are developed and applied to determine the effects of representative values of wind and friction torque.
Hill, R. E.
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