Magnetostrictive direct drive rotary motor development

1991 ◽  
Vol 27 (6) ◽  
pp. 5355-5357 ◽  
Author(s):  
J.M. Vranish ◽  
D.P. Naik ◽  
J.B. Restorff ◽  
J.P. Teter
Keyword(s):  
Motor Development ◽  
Direct Drive ◽  
Rotary Motor

CAD of a direct drive rotary motor based on giant magnetostrictive alloys

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-785-Pr2-788
Author(s):  
M. E.H. Benbouzid ◽  
G. Reyne ◽  
G. Meunier
Keyword(s):  
Direct Drive ◽  
Rotary Motor

DD-type Linear Motor Systems and Their Applications

1989 ◽  
Vol 1 (4) ◽  
pp. 328-332
Author(s):  
Tamotsu Suzuki ◽  
Keyword(s):  
Motor Development ◽  
Linear Motor ◽  
Drive System ◽  
Industrial Robots ◽  
Added Value ◽  
Direct Drive ◽  
Positioning Systems ◽  
Factory Automation ◽  
Linear Motors ◽  
Linear Drive System

Carrying and positioning systems for linear movement in factory automation are typically a combination of a motor and motion-translating mechanisms, such as ball screws, belts, and racks and pinions. Such mechanical motion-translating mechanisms, however, have the disadvantages of limited accuracy, speed, and durability. As a solution to this problem, direct-drive linear motors, which drive an object directly mounted on the drive section, have attracted considerable interest, and various types of linear motors have been actually used. The recent trend in linear motor development has been such that the functions of the motor alone have been expanded into higher functions of the linear drive system. The ""Megathrust Motor"" is a direct drive linear actuator system developed by Nippon Seiko K.K. It has some components, such as a detector and drive unit, which are different from those of other drive systems, and therefore provide high performance and added value. Nippon Seiko K.K. has also developed and marketed a direct drive ""Megatorque Motor."" This motor has achieved high speed and highly accurate rotational drive of industrial robots and general industrial machines, and has been widely used as a rotary actuator in factory automation. The Megathrust Motor is a linear drive system developed as an application of the technology of the Megatorque Motor. This paper describes the features, performance, and applications of the Megathrust Motor.

A magnetorestrictive direct drive rotary motor

2005 ◽  
Author(s):  
J.M. Vranish ◽  
D.P. Naik ◽  
J.B. Restorff ◽  
J.P. Teter
Keyword(s):  
Direct Drive ◽  
Rotary Motor

The three-dimensional structure of frozen-hydrated left- and right-handed forms of bacterial flagellar filaments from an identical serotype

1986 ◽  
Vol 44 ◽  
pp. 298-299
Author(s):  
S. Trachtenberg ◽  
D. J. DeRosier
Keyword(s):  
Ionic Strength ◽  
Basal Body ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Protein Species ◽  
Liquid Environment ◽  
Bacterial Flagellum ◽  
Left And Right ◽  
Rotary Motor ◽  
Helical Parameters

The bacterial cell is propelled through the liquid environment by means of one or more rotating flagella. The bacterial flagellum is composed of a basal body (rotary motor), hook (universal coupler), and filament (propellor). The filament is a rigid helical assembly of only one protein species — flagellin. The filament can adopt different morphologies and change, reversibly, its helical parameters (pitch and hand) as a function of mechanical stress and chemical changes (pH, ionic strength) in the environment.

Physiologic Studies Provide New Perspectives on Early Speech Development

2010 ◽  
Vol 20 (2) ◽  
pp. 29-36
Author(s):  
Erin M. Wilson ◽  
Ignatius S. B. Nip
Keyword(s):  
Motor Control ◽  
Motor Development ◽  
Motion Tracking ◽  
Speech Development ◽  
Speech Motor Control ◽  
Therapeutic Approaches ◽  
Facial Motion ◽  
Disordered Speech ◽  
Speech Motor ◽  
Physiologic Data

Abstract Although certain speech development milestones are readily observable, the developmental course of speech motor control is largely unknown. However, recent advances in facial motion tracking systems have been used to investigate articulator movements in children and the findings from these studies are being used to further our understanding of the physiologic basis of typical and disordered speech development. Physiologic work has revealed that the emergence of speech is highly dependent on the lack of flexibility in the early oromotor system. It also has been determined that the progression of speech motor development is non-linear, a finding that has motivated researchers to investigate how variables such as oromotor control, cognition, and linguistic factors affect speech development in the form of catalysts and constraints. Physiologic data are also being used to determine if non-speech oromotor behaviors play a role in the development of speech. This improved understanding of the physiology underlying speech, as well as the factors influencing its progression, helps inform our understanding of speech motor control in children with disordered speech and provide a framework for theory-driven therapeutic approaches to treatment.

New Developments in Motor Development

1986 ◽  
Vol 31 (11) ◽  
pp. 877-878
Author(s):  
James J. Staszewski
Keyword(s):  
Motor Development ◽  
New Developments
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