Anovel output feedback pusher plate controller for the penn state electric ventricular assist device

U. Tsach, D. B. Geselowitz, A. Sinha, H. K. Hsu

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

This paper addresses the development ofan outputfeedback controller for the Penn State Electric Ventricular Assist Device (EVAD). The control law is designed to minimize the electric power consumption of the motor, while utilizing the measured pusher plate position as its only feedback signal. The control algorithm results in a suboptimal performance. The feedback gain function is calculated such that the expected value ofthe deviations between the suboptimal andfull state feedback power consumption values is minimized. The system state initial conditions are treated as random variables with specified probability density functions. Numerical simulations indicate that the output feedback controller of the EVAD has a near optimum performance (the excessive electric power consumption is less than 1percent), and a time shift manipulation of a single feedback gain function can drive the EVAD in various speeds with minimal energy losses.

Original languageEnglish (US)
Pages (from-to)69-74
Number of pages6
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Volume111
Issue number1
DOIs
StatePublished - Mar 1989

All Science Journal Classification (ASJC) codes

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

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