scholarly journals Design and analysis of dual‐stator hybrid excited linear flux switching machine for long‐stroke applications

2021 ◽  
Author(s):  
Basharat Ullah ◽  
Faisal Khan ◽  
Ahmad H. Milyani ◽  
Naseer Ahmad ◽  
Khalid Mehmood Cheema
Keyword(s):  
Long Stroke

Long stroke precision PZT actuator

1995 ◽  
Author(s):  
Robert Bamford ◽  
C Kuo ◽  
Robert Glaser ◽  
Ben Wada
Keyword(s):  
Pzt Actuator ◽  
Long Stroke

A Novel Double-Sided Linear Flux Switching Machine with Yokeless Secondary for Long Stroke Applications

2021 ◽  
Author(s):  
Muhammad Qasim ◽  
Faisal Khan ◽  
Basharat Ullah ◽  
Himayat Ullah Jan ◽  
Shahid Hussain ◽  
...  
Keyword(s):  
Long Stroke

A Magnetic Drive Actuator for Micro Electrical Discharge Machining

2012 ◽  
Vol 591-593 ◽  
pp. 303-306
Author(s):  
Xiao You Zhang ◽  
Akio Kifuji ◽  
Dong Jue He
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Degrees Of Freedom ◽  
Electrical Discharge Machining ◽  
Magnetic Coupling ◽  
Magnetic Bearings ◽  
Coupling Mechanism ◽  
Micro Electrical Discharge Machining ◽  
Long Stroke ◽  
Magnetic Drive

Electrical discharge machining has the capability of machining all conductive materials regardless of hardness, and has the ability to deal with complex shapes. However, the speed and accuracy of conventional EDM are limited by probability and efficiency of the electrical discharges. This paper describes a three degrees of freedom (3-DOF) controlled, wide-bandwidth, high-precision, long-stroke magnetic drive actuator. The actuator can be attached to conventional electrical discharge machines to realize a high-speed and high-accuracy EDM. The actuator primarily consists of thrust and radial magnetic bearings, thrust and radial air bearings and a magnetic coupling mechanism. By using the thrust and radial magnetic bearings, the translational motions of the spindle can be controlled. The magnetic drive actuator possesses a positioning resolution of the order of micrometer, a bandwidth greater than 100Hz and a positioning stroke of 2mm.

Experimental study of an ER long-stroke vibration damper

1997 ◽  
Author(s):  
David J. Peel ◽  
Roger Stanway ◽  
William A. Bullough
Keyword(s):  
Experimental Study ◽  
Vibration Damper ◽  
Long Stroke

scholarly journals Impacts of sensor layouts on the performance of a long-stroke nano-positioning stage

2016 ◽  
Vol 8 (11) ◽  
pp. 168781401668019 ◽  
Author(s):  
Fu-Cheng Wang ◽  
Kuo-An Wang ◽  
Yi-Yi Chen ◽  
Hsueh-Ju Chen ◽  
Jia-Yush Yen
Keyword(s):  
Positioning Stage ◽  
Long Stroke

Analytical and Numerical Modelling of Shape Memory Alloy Negator Springs for Long-Stroke Constant-Force Actuators

2012 ◽  
Author(s):  
Andrea Spaggiari ◽  
Eugenio Dragoni
Keyword(s):  
Shape Memory ◽  
Mechanical Behaviour ◽  
Volume Ratio ◽  
Constant Force ◽  
Helical Springs ◽  
Finite Element Software ◽  
Spiral Spring ◽  
High Area ◽  
Flat Shape ◽  
Long Stroke

This paper explores the merits of shape memory Negator springs as powering elements for solid state actuators. A Negator spring is a spiral spring made of strip of metal wound on the flat with an inherent curvature such that, in repose, each coil wraps tightly on its inner neighbour. The unique characteristic of Negator springs is the nearly-constant force needed to unwind the strip for very large, theoretically infinite deflections. Moreover the flat shape, having a high area over volume ratio, grants improved bandwidth compared to any solution with solid wires or helical springs. The SMA material is modelled as elastic in austenitic range while an exponential continuum law is used to describe the martensitic behaviour. The mathematical model of the mechanical behaviour of SMA Negator springs is provided and their performances as active elements in constant-force, long-stroke actuators are assessed. The SMA Negator spring is also simulated in a commercial finite element software, ABAQUS, and its mechanical behaviour is estimated through FE analyses. The analytical and the numerical prediction are in good agreement, both in martensitic and in austenitic range.

Sign in / Sign up

Export Citation Format

Share Document