Development of a small and high performance control system for a motor-driven assist pump.

  • OKAMOTO E
    Division of Biomedical Eng., Faculty of Eng., Hokkaido University
  • YAMAMOTO K
    Division of Biomedical Eng., Faculty of Eng., Hokkaido University
  • MITAMURA Y
    School of Eng., Hokkaido Tokai University
  • MIKAMI T
    Division of Biomedical Eng., Faculty of Eng., Hokkaido University

Bibliographic Information

Other Title
  • 体内埋込み型補助人工心臓駆動制御システムの小型化

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Abstract

We have developed a Small and low power and high performance control system for a motor-driven assist pump.<br>The control system consists of two microcomputers, a programmable logic device (PLD) for address decoding and electronic commutation, a miniature power-FET module for driving a brushless dc motor, a RS-232 driver/receiver. By employing the PLD and by optimum design of a circuit, we have reduced the number of ICs on acircuit board, and have reduced the size of the control system (board size: 64x64mm). The control system has a 16-bit 1-chip microcomputer including a ROM, a RAM, a PIO, a SIO, an A/D, a Timer, a PWM output, and a universal pulse prooessor. The control system has the following various functions; (a) follow-up control system, (b) bi-directional communication with a host computer outside body, (c) adjustment of pump drive parameters from the host computer, (d) control of charge current to a secondary battery. The controller enables us to change drive condition from the outside of the body and to operate the motor-driven assist pump adaptively, based on motor drive dates obtained by the bi-directional communication and physiological test dates.

Journal

  • Jinko Zoki

    Jinko Zoki 24 (2), 357-362, 1995

    JAPANESE SOCIETY FOR ARTIFICIAL ORGANS

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