Results 221 to 230 of about 60,284 (266)

Double loop controller design for the vehicle's heading control

2009 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2009
In this study, an electrically powered vehicle has been implemented to perform an unmanned ground vehicle purpose. The steering system is modified to automatically control by installing the DC servo motor at the steering wheel shaft. The compass sensor used as the feedback sensor to measure the current heading angle of the vehicle.
Horwimnporn Suppachai, Chaiyaporn Silawatchananai, Manukid Parnichkun, Chairit Wuthishuwong   +3 more
openaire   +1 more source

Influence of heading perception in the control of posture

Journal of Electromyography and Kinesiology, 2018
The optic flow visual input directly influences the postural control. The aim of the present study was to examine the relationship between visually induced heading perception and postural stability, using optic flow stimulation. The dots were accelerated to simulate a heading direction to the left or to the right of the vertical midline.
Piras, Alessandro, Raffi, Milena, Perazzolo, Monica, Squatrito, Salvatore   +3 more
openaire   +3 more sources

Gaze control for a binocular camera head

1992
This paper describes a layered control system for a binocular stereo head. It begins with a discussion of the principles of layered control and then describes the mechanical device for a binocular camera head. A device level controller is presented which permits an active vision system to command the position of the gaze point The final section ...
James L. Crowley, Philippe Bobet, Mouafak Mesrabi   +2 more
openaire   +1 more source

Head Circumference in ‘Preschizophrenic’ and Control Neonates

British Journal of Psychiatry, 1993
Head circumference, body weight, body length, and shoulder circumference at birth were studied in 70 RDC schizophrenic patients and 70 demographically matched controls from the same delivery series, using information recorded in the medical records at the time of birth.
T F, McNeil, E, Cantor-Graae, L G, Nordström, T, Rosenlund   +3 more
openaire   +2 more sources

LAYERED CONTROL OF A BINOCULAR CAMERA HEAD

International Journal of Pattern Recognition and Artificial Intelligence, 1993
This paper describes a layered control system for a binocular stereo head. It begins by a discussion of the principles of layered control. It then describes the mechanical configuration for a binocular camera head with six degrees of freedom. A device level controller is presented which permits an active vision system to command the position of a ...
James L. Crowley, Philippe Bobet, Mouafak Mesrabi   +2 more
openaire   +1 more source

Head Control Changes After Headpod Use in Children With Poor Head Control: A Feasibility Study

Pediatric Physical Therapy, 2018
Purpose: To determine the feasibility of Headpod use to improve head control in children with cerebral palsy classified as Gross Motor Function Classification System level V. Methods: Children (3-11 years) with poor head control were video recorded before and after 3 and 6 months of
Julie E, Brown, Mary, Thompson, Kelli, Brizzolara   +2 more
openaire   +2 more sources

Head-Controlled Racecar for Quadriplegics

2020 American Control Conference (ACC), 2020
Harry G. Direen, Randal H. Direen, James E. Direen   +2 more
openaire   +1 more source

Control of intermittent esotropia by head shaking

Journal of American Association for Pediatric Ophthalmology and Strabismus, 2007
Head shaking is a rare phenomenon that refers to repetitive, low-amplitude rhythmic oscillations of the head around the cervical axis. In otherwise neurologically normal children with concomitant ophthalmic disease, head shaking (and/or nodding, ie, vertical oscillations) can be an associated finding or a compensatory mechanism to improve visual acuity.
openaire   +2 more sources

Modeling and nonlinear heading control for sailing yachts

OCEANS'11 MTS/IEEE KONA, 2011
This paper presents a study on the development and testing of a model-based heading controller for a sailing yacht. Using Fossen's compact notation for marine vehicles, we first describe a nonlinear 4-DOF dynamic model for a sailing yacht, including roll.
Xiao, Lin, Jouffroy, Jerome
openaire   +3 more sources

Control mechanisms in the morphogeneses of bacteriophage heads

Biosystems, 1980
Abstract Knowing that the pathway of phage particle morphogenesis is not under transcriptional control, we elaborate on mechanisms acting on the level of proteins. We give examples which show one of the mechanisms by which freely available protein subunits become involved when the proteins of a precursor particle have reached a certain conformation ...
openaire   +2 more sources