Frequency domain control of flexible beams with piezoelectric actuator

Shih-Ming Yang, Y. C. Liu

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


One of the challenges in structural control is to apply successfully the control law derived from a discrete, reduced-order model to the engineering system of much higher order. Spillover associated with discrete system modeling has been known to lead to closed loop system instability. This paper presents a frequency domain stability criterion for the high/low-authority controller design of flexible beam systems in distributed parameter model. It is shown that the poles of a slewing beam system can be categorized in two groups: one from those of a cantilever beam and the other from those of a high-authority control slewing beam. Stability analysis can thus be conducted in each group independently. Application of piezoelectric actuator is shown to be effective in the vibration control of a slewing beam system. Neither distributed sensing/estimation nor functional gain calculation is required. Furthermore, the spillover problem can be prevented.

Original languageEnglish
Pages (from-to)541-546
Number of pages6
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Issue number4
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Information Systems
  • Instrumentation
  • Mechanical Engineering
  • Computer Science Applications


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