Results 241 to 250 of about 185,318 (292)

POSITION/TORQUE CONTROL OF A SPACE ROBOTICS ARM

IFAC Proceedings Volumes, 2006
Abstract Torque sensors are used in space robot joints to increase robot capabilities and operational flexibility. Cascaded to a load position loop, a torque loop increases the performance of a position servo facing large variations of load inertia, typical of space robot arms.
D. Camorali, MAGNANI, GIANANTONIO, ROCCO, PAOLO, A. Rusconi   +3 more
openaire   +2 more sources

Influence of Position on Knee Flexor Peak Torque

Journal of Orthopaedic & Sports Physical Therapy, 1988
The purpose of this study was to determine the influence of position on knee flexor peak torque production. Gravity effect torque and knee flexor peak torque were measured in both supine and prone positions for 20 male and female volunteers between the ages of 22 and 35 years with no history of left lower extremity pathology.
A E, Barr, P W, Duncan
openaire   +2 more sources

Torque-position transformer for task control of position controlled robots

2008 IEEE International Conference on Robotics and Automation, 2008
Joint position control is a dominant paradigm in industrial robots. While it has been successful in various industrial tasks, joint position control is severely limited in performing advanced robotic tasks, especially in unstructured dynamic environments.
Oussama Khatib, Peter Thaulad, null Taizo Yoshikawa, Jaeheung Park   +3 more
openaire   +1 more source

Position sensorless BDCM control with repetitive position-dependent load torque

2010 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2010
This paper addresses the position sensorless control for brushless DC motor (BDCM) with repetitive position-dependent load torque which is a function of the absolute rotor position (not incremental rotor position). The robust sensorless control is composed of sensorless control and robust speed control.
Hung-Chi Chen, Chih-Kai Huang
openaire   +1 more source

Air torque position damper energy consumption analysis

Energy and Buildings, 2015
Abstract The damper used for the control of airflow in heating, ventilation and air conditioning systems can constructively be adapted to measure the air velocity with its moment characteristic. It is a device that indirectly determines the air velocity by measuring the position of the blades and the air stream moment acting on it.
Siniša Bikić, Dušan Uzelac, Maša Bukurov, Bogoljub Todorović, Slobodan Tašin   +4 more
openaire   +1 more source

TCP position tolerances in joint torque minimizations

Proceedings. 1998 IEEE/RSJ International Conference on Intelligent Robots and Systems. Innovations in Theory, Practice and Applications (Cat. No.98CH36190), 2002
A new algorithm for link and path optimizations of manipulator arms is formulated. The algorithm considers precision in tool center point (TCP) positioning. A penalizing function is introduced to allow divergence from the desired TCP locations. The ever increasing operational demands of robots presuppose high power drives which tends to adversely ...
S. Grahn, P. Flisberg, G. Johansson, P.O. Lindberg, T. Larsson   +4 more
openaire   +1 more source

The contribution of gravitational torques to limb position sense

Experimental Brain Research, 1985
An experiment is reported which examined whether gravitational torque acting about a joint is used by the CNS in elbow joint angle matching. Subjects were required to match the joint angles of their two limbs while the external torques acting about each elbow were systematically varied. It was found that when the matching limb was differentially loaded,
C J, Worringham, G E, Stelmach
openaire   +2 more sources

Position Sensorless Direct Torque Control of SR Motors

2006 12th International Power Electronics and Motion Control Conference, 2006
Switched Reluctance motors (SR motors) have several desirable features, including simple construction, high reliability and low cost. But large torque ripple and expensive position sensors used in SR motor drive systems are considered as drawbacks for wide application. Several studies have succeeded in torque ripple reduction for SR motors using Direct
M. Mitani, H. Goto, H.-J. Guo, O. Ichinokura   +3 more
openaire   +1 more source

Position sensorless direct torque control of BLDC motor

2008 IEEE International Conference on Industrial Technology, 2008
Direct torque control (DTC) can directly control the inverter states in order to reduce the torque error within the prefixed band limit. DTC of brushless dc drive with trapezoidal back-EMF is presented in this paper. Using the rotor flux vector position in alpha-beta axis stationary reference frame and torque error, the proper switching pattern can be ...
G. R. Arab Markadeh, S. I. Mousavi, S. Abazari, A. Kargar   +3 more
openaire   +1 more source

An Accurate Torque-based Engine Control by Learning Correlation between Torque and Throttle Position

SAE Technical Paper Series, 2008
<div class="htmlview paragraph">In recent years, integrated vehicle control systems have been developed to improve fuel economy and safety. As a result, engine control is shifting to torque-based systems for throttle / fuel / ignition control, to realize an engine torque demand from the system.
Shinya Satou, Shinji Nakagawa, Hiromu Kakuya, Toshimichi Minowa, Mamoru Nemoto, Hitoshi Konno   +5 more
openaire   +1 more source