Results 261 to 270 of about 8,788 (300)
Some of the next articles are maybe not open access.
Nonlinear Control of Induction Motors: Torque Tracking with Unknown Load Disturbance
1992 American Control Conference, 1992Ortega and Espinosa (1993) presented a globally stable controller for torque regulation of a complete induction motor model with partial state feedback, i.e., no assumption of flux measurement. The result was established under the assumptions that both the desired and load torques are constant, that the former does not exceed certain bounds which ...
Romeo Ortega +2 more
openaire +1 more source
Deadbeat Predictive Direct Torque and Active Flux Control with Disturbance Observer
IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021This paper proposes a new framework for the deadbeat predictive direct torque control for interior permanent magnet synchronous machine (IPMSM) utilizing active flux. Unlike the existing deadbeat predictive direct torque and stator flux control, it is relatively simple and does not require to neglect any physical quantities such as stator resistance ...
Sayed Mohammad Showybul Islam Shakib +3 more
openaire +1 more source
On electrodynamical compensation of a torque disturbing satellite orientation
2015 International Conference "Stability and Control Processes" in Memory of V.I. Zubov (SCP), 2015A satellite with electrodynamic attitude control system is considered. The problem of compensation of an external disturbing torque is solved. The optimization of control process in vicinity of programmed motion is achieved on the basis of control system without involving additional measuring devices.
openaire +1 more source
Torque disturbance rejection in high accuracy tracking systems
IEEE Transactions on Aerospace and Electronic Systems, 1990The possibility of rejecting torque disturbances that degrade the pointing and tracking accuracy of electromechanical pedestals and general two-axis systems used for target acquisition and robotics is discussed. Torque rejection achieved through disturbance estimation and compensation results in a vast improvement in pointing accuracy. For the class of
J.A. Profeta, W.G. Vogt, M.H. Mickle
openaire +1 more source
Reducing Disturbances Caused by Reductions in Regenerative Brake Torque
SAE Technical Paper Series, 2011<div class="section abstract"><div class="htmlview paragraph">This paper presents a method to reduce the number of occurrences of vehicle deceleration disturbances due to the reduction of regenerative braking in the presence of wheel slip. Usually, regenerative braking is disabled when wheel slip is detected in order to allow the ABS system
Eric Krueger, Kevin Kidston, Adam Busack
openaire +1 more source
Intelligent Controllers in Path Tracking of a Manipulator with Bounded Disturbance Torque
2013Sliding mode controller (SMC) is an effective motion control strategy for robotic manipulator systems, which can ensure globally asymptotic stability. However, SMC suffer from chattering problem and a-priori knowledge of upper bound of the uncertainty is required for its effectiveness.
Neha Kapoor, Jyoti Ohri
openaire +1 more source
Manufacturing Errors Effects on Disturbing Torque of Aerostatic Bearings
Applied Mechanics and Materials, 2009In order to improve the drifting accuracy of aerostatic bearings, the manufacturing errors effects on disturbing torque of aerostatic bearings is studied by using the finite element method. The finite element mathematic model of the major influence factors of disturbing torque is established.
Jing Shi Liu +3 more
openaire +1 more source
Rejection of nonlinear disturbance torque in servomechanism with repetitive control
IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2003In this paper, a repetitive control method is presented for the rejection of significant nonlinear disturbance torque in servomechanisms. The disturbance torque dealt with is assumed to be periodic in position, which is the main cause for the degradation of the system steady-state precision. A sufficient condition for stability is given.
null Dongchun Zhang +2 more
openaire +1 more source
Tracking control of time-varying knee exoskeleton disturbed by interaction torque
ISA Transactions, 2017Knee exoskeletons have been increasingly applied as assistive devices to help lower-extremity impaired people to make their knee joints move through providing external movement compensation. Tracking control of knee exoskeletons guided by human intentions often encounters time-varying (time-dependent) issues and the disturbance interaction torque ...
Zhan, Li +3 more
openaire +2 more sources
Sensorless vector control of synchronous reluctance motors with disturbance torque observer
APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058), 2001The elimination of the position sensor has been one important requirement in vector control systems because the position sensor spoils the reliability and simplicity of drive systems. Therefore, we present a sensorless vector control technique for synchronous reluctance motors. The rotor position is calculated easily from ds-qs-axes flux linkages which
Tomonobu Senjyu +2 more
openaire +1 more source