基于Smith预估器的口腔治疗仪控制系统研究

Research on Nonnasality Cure Instrument Control System Based on Smith Compensator

基于Smith预估器原理设计了单片机控制的口腔治疗仪系统。单片机利用PWM调速原理输出控制信号调节气泵电机的转速,保持治疗仪容器内气压值恒定。Smith预估器的引入补偿了纯滞后环节对控制系统的影响,在此基础上介绍了系统硬件组成及软件编程。

The nonnasality cure instrument system is designed based on Smith compensator principle. On the principle of PWM timing, the singlechip outputs control signal that adjusts pump electromotor rotate speed for retaining air pressure in cure instrument's vessel invariably. The dead time's influence to control system is compensated by importing Smith compensator. Furthermore, the system hardware composing and software programme are introduced.