技术中心

【英文篇名】 Temperature control system of heat exchangers based on Smith predictor 【作者中文名】 曹国庆; 娄承芝; 安大伟; 【作者英文名】 By Cao Guoqing★; Lou Chengzhi and An DaweiTianjin University; Tianjin; China; 【作者单位】 天津大学; 【文献出处】 暖通空调, Hv Smith预估器; 温度控制; 单片机; 【英文关键词】 heat exchanger; Smith predictor; temperature control; single-chip micro-computer; 【摘要】 针对换热器温度控制系统的大时滞问题,提出了一种Smith预估控制器的设计方法,并由MCS51微机系统实现。认为该方法能有效克服大纯滞后对控制系统稳定性的影响。计算机仿真与实验研究表明,其控制效果明显优于常规PID控制,非常适用于换热器的温度控制。 【英文摘要】 Aiming at the large delay in temperature control system of heat exchangers, puts forward a design method of Smith predicting controller, realized by an MCS51 micro-computer system. Holds that by this way the influence of the large pure delay on the system stability can be overcome. Computer simulation and experiment research show that it is very suitable for temperature control of heat exchangers with better effects than conventional PID control.