Lag-Lead Compensator for Shape Memory Alloy in Gripping Manipulation
Abstract: Shape Memory Alloy
(SMA) is emerging actuator for micro and nano application which is interesting
to be developed. This paper presents the evaluation of close-loop controller
responses of the TiNi SMA spring based gripper by introducing lag, lead and
lag-lead compensator. A SMA spring has a diameter of 50 mm wire and 350 gram
hanging mass. The driver of the SMA actuator uses pulse width modulation (PWM)
signal and it is tested by varying frequencies and duty-cycles. The applied
frequencies in this study are 12, 25, 125, 250 and 1150 Hz. Lab-View and
DAQ-Card is used as a controller, interfacer and data recorder of the system.
The fabricated gripper consists of two fingers and the total angular
displacement of the gripper is 300. In advanced application, the experiment
coversSMA open loop and close-loop system. The SMA response indicated that the
rise-time and the steady-state error of the cloop-loop are shorter and lower
than open-loop controller.
Penulis: Made Andik Setiawan
Kode Jurnal: jptkomputerdd100048
Artikel Terkait :
Jp Teknik Komputer dd 2010
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