Research on Development of a Wide Range Velocity Control Method of Small Size DC Motor for Portable Drug Delivery System

  • Lee, Dong-Joon (Interdisciplinary Program of Medical and Biological Eng. Major, Seoul National Univ.) ;
  • Lim, Yang-Ho (SOO-IL DEVELOPMENT CO., LTD.) ;
  • Kim, Jang-Hwan (SOO-IL DEVELOPMENT CO., LTD.) ;
  • Shin, Chan-Soo (Department of Internal Medicine, Seoul National Univ.) ;
  • Kim, Hee-Chan (Department of Biomedical Eng., Seoul National Univ.) ;
  • Choi, Soo-Bong (Department of Internal Medicine, Konkuk Univ.) ;
  • Lee, Hong-Gyu (Department of Internal Medicine, Seoul National Univ.)
  • Published : 1996.11.15

Abstract

Small size DC motor control method for portable drug delivery system has been developed to be used for the actuator of insulins pump. The control method gives the controllabilities both in high speed(40-50 revolution per second(rps)) DC motor drive and also in low speed(0.5-1rps). In low speed mode DC motor is controlled to act like stepping motor and in high speed to optimize power consumption. To control both mode modified bang bang control is suggested. Using this method small size DC motor(spec.) speed is controlled from 0.2 rps to 50 rps. Experimental setup is developed using micro-processor(PIC16C73, Micro Chips co., USA), motor turns checking circuitry, small size DC motor for pager(SM1012, Samhong co., Korea) and gear box. Results from experiment meet need for vailable load condition which is require for portable drug delivery system.

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