A system identification approach to the characterization and control of a piezoelectric tube actuator

Morteza Mohammadzaheri, Steven Grainger, Mohsen Bazghaleh

نتاج البحث: المساهمة في مجلةمراجعة النظراء

10 اقتباسات (Scopus)

ملخص

This paper addresses the sensorless control of piezoelectric tube actuators to avoid the expense and practical limits of displacement sensors in nanopositioning applications. Three electrical signals have traditionally been used to estimate displacement: the piezoelectric voltage, the voltage induced in sensing electrodes and the voltage across a sensing resistor. In this work, the piezoelectric voltage was employed to estimate displacement; the use of this signal does not necessitate drift removal like the sensing voltage, and its superiority over the induced voltage is shown in this paper. The piezoelectric voltage is the actuating signal, so a feedforward architecture based on an inverse model is used for sensorless control. Inspired by internal model control (IMC), a filter together with the inverted model of the system, derived using system identification techniques, was used as the feedforward controller. The fixed-slope-input effect is illustrated as a prominent source of control error in tracking triangular references, then an additional nonlinear control command is proposed to address this effect and improve the control performance.

اللغة الأصليةEnglish
رقم المقال105022
دوريةSmart Materials and Structures
مستوى الصوت22
رقم الإصدار10
المعرِّفات الرقمية للأشياء
حالة النشرPublished - أكتوبر 2013
منشور خارجيًانعم

ASJC Scopus subject areas

  • ???subjectarea.asjc.1700.1711???
  • ???subjectarea.asjc.2200.2205???
  • ???subjectarea.asjc.3100.3107???
  • ???subjectarea.asjc.2500???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.2200.2211???
  • ???subjectarea.asjc.2200.2208???

بصمة

أدرس بدقة موضوعات البحث “A system identification approach to the characterization and control of a piezoelectric tube actuator'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا