ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
The actuators using shape memory alloys can work as an actuator to control or retainpositioning without using sensor devices. In this work, a position control model with a biasingmechanism is produced. The produced model is controlled by resistance feedback using the methodof setting off-time and can be set and retained at an arbitrary position. The effects of input current,control distance and off-time on positioning characteristics such as dynamic behavior and positionstability are investigated. The results show that high input current for heating is effective forshortening the rise and settling times. However, the overshoot increases with increasing input current.When the recovery strain is below 2.5%, the rise and settling velocities increase with increasingcontrol distance. Furthermore, the off-time affects position stability. In the case of short off-time, fineposition stability is performed regardless of the values of input current and control distance
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.59.178.pdf
