Design of driver control system for serum centrifuge
LIU Hanzhong, ZHANG Dalei
(Department of Automation，Nanjing Institute of Technology, Nanjing 211167， China)
Abstract:  Aiming at the requirement of speed stability while material separating with serum centrifuge, the hardware and software realization of driver control system were introduced, the control system structure of brusless DC motor(BLDCM) used in serum centrifuge was expounded firstly. And then ,hardware design such as current detection circuit, driver circuit in control system and software design including electronic commutation, speed detection, closedloop PID regulation algorithm were described in detail. Finally, speed step response figure was presented, Repeated tests indicate that the response of driving control system is rapid and precision of speed stability is high,which can well meet the requirements of material separation for serum centrifuge.
Key words: brusless DC motor (BLDCM); speed adjusting;PID