A New Approach for Temperature Control of Medical Air Insulation Blanket
To meet the technical demands of temperature control in medical air insulation blanket, a closed loop system of temperature control is put forward, in which the hardware circuit is mainly composed of temperature sensor, MCU and RS232 communication module etc. Through changing the work time of the electrically heated wire via controlling the turn-on time of the thyristor by the PWM technique and adaptive fuzzy PID technique, the air temperature from the outlet of the insulation blankets gasbag is automatically adjusted and controlled. The whole control process is divided into two stages: the duty cycle of the electrically heated wires work time is set to be 100％ at the initial auto adjustment stage, and then is determined by a relevant control variable during the stage of adaptive fuzzy PID algorithm control when the air temperature rises up to a certain range, hence the air temperature is regulated. The MATLAB simulation based on the control method shows that the adaptive fuzzy PID algorithm control is superior to conventional PID control due to the former excellent adaptability, robustness and the steady-state accuracy.
Insulation blanket Temperature control Adaptive fuzzy PID Matlab simulation
YANG Lianfa ZHANG Miaomiao JIANG Yihong
Faculty of mechanical & Electrical Engineering Guilin University of Electronic Technology,GUET Guili Affiliated Hospital Guilin Medical University Guilin,China
国际会议
上海
英文
1164-1166
2009-11-20（万方平台首次上网日期，不代表论文的发表时间）